/ Language/OS - Multiplatform Resource Library / LANGUAGE OS.iso / a_utils / perl / mac-perl / gs_102st.bin / GUSI / GUSI.tex

< prev

next >

MacOS 8.1

Win98

DOS

browse contents

view JSON data

view as text

+--------+-------------------------+-------------------------+--------+--------+
|00000000| 00 08 47 55 53 49 2e 74 | 65 78 00 00 00 00 00 00 |..GUSI.t|ex......|
|00000010| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000020| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000030| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
|00000040| 00 54 45 58 54 00 00 00 | 00 00 00 00 00 00 00 00 |.TEXT...|........|
|00000050| 00 00 00 00 00 d7 b7 00 | 00 01 ac a7 83 9d 65 a7 |........|......e.|
|00000060| 83 9d 65 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |..e.....|........|
|00000070| 00 00 00 00 00 00 00 00 | 00 00 81 81 e6 f0 00 00 |........|........|
|00000080| 5c 69 6e 70 75 74 20 63 | 77 65 62 2e 74 65 78 0d |\input c|web.tex.|
|00000090| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|000000a0| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|000000b0| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|000000c0| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|000000d0| 25 25 25 25 25 25 25 0d | 25 20 50 72 6f 6a 65 63 |%%%%%%%.|% Projec|
|000000e0| 74 20 3a 20 47 55 53 49 | 20 20 20 2d 20 47 72 61 |t : GUSI|   - Gra|
|000000f0| 6e 64 20 55 6e 69 66 69 | 65 64 20 53 6f 63 6b 65 |nd Unifi|ed Socke|
|00000100| 74 20 49 6e 74 65 72 66 | 61 63 65 0d 25 20 46 69 |t Interf|ace.% Fi|
|00000110| 6c 65 20 20 3a 20 47 55 | 53 49 2e 77 65 62 20 20 |le  : GU|SI.web  |
|00000120| 2d 20 44 6f 63 75 6d 65 | 6e 74 61 74 69 6f 6e 0d |- Docume|ntation.|
|00000130| 25 20 41 75 74 68 6f 72 | 20 3a 20 4d 61 74 74 68 |% Author| : Matth|
|00000140| 69 61 73 20 4e 65 65 72 | 61 63 68 65 72 0d 25 20 |ias Neer|acher.% |
|00000150| 53 74 61 72 74 65 64 20 | 3a 20 30 38 53 65 70 39 |Started |: 08Sep9|
|00000160| 32 20 20 20 20 20 20 20 | 20 4c 61 6e 67 75 61 67 |2       | Languag|
|00000170| 65 20 3a 20 43 20 53 70 | 69 64 65 72 57 65 62 0d |e : C Sp|iderWeb.|
|00000180| 25 20 4d 6f 64 69 66 69 | 65 64 20 3a 20 30 38 53 |% Modifi|ed : 08S|
|00000190| 65 70 39 32 20 4d 4e 20 | 49 74 27 73 20 62 65 67 |ep92 MN |It's beg|
|000001a0| 69 6e 6e 69 6e 67 20 74 | 6f 20 74 61 6b 65 20 73 |inning t|o take s|
|000001b0| 68 61 70 65 0d 25 20 20 | 20 20 20 30 35 4f 63 74 |hape.%  |   05Oct|
|000001c0| 39 32 20 4d 4e 20 4d 6f | 72 65 20 6f 72 20 6c 65 |92 MN Mo|re or le|
|000001d0| 73 73 20 63 6f 6d 70 6c | 65 74 65 20 6e 6f 77 0d |ss compl|ete now.|
|000001e0| 25 20 20 20 20 20 31 33 | 44 65 63 39 32 20 4d 4e |%     13|Dec92 MN|
|000001f0| 20 42 72 75 73 68 20 69 | 74 20 75 70 20 66 6f 72 | Brush i|t up for|
|00000200| 20 72 65 6c 65 61 73 65 | 0d 25 20 20 20 20 20 30 | release|.%     0|
|00000210| 39 4a 61 6e 39 33 20 4d | 4e 20 55 70 64 61 74 65 |9Jan93 M|N Update|
|00000220| 20 66 6f 72 20 31 2e 30 | 2e 31 0d 25 20 4c 61 73 | for 1.0|.1.% Las|
|00000230| 74 20 20 3a 20 30 39 4a | 61 6e 39 33 0d 25 25 25 |t  : 09J|an93.%%%|
|00000240| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00000250| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00000260| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00000270| 25 25 25 25 25 25 25 25 | 25 25 25 25 25 25 25 25 |%%%%%%%%|%%%%%%%%|
|00000280| 25 25 25 25 0d 0d 25 20 | 43 6f 70 79 72 69 67 68 |%%%%..% |Copyrigh|
|00000290| 74 20 31 39 39 32 2c 20 | 31 39 39 33 20 4d 61 74 |t 1992, |1993 Mat|
|000002a0| 74 68 69 61 73 20 4e 65 | 65 72 61 63 68 65 72 20 |thias Ne|eracher |
|000002b0| 3c 6e 65 65 72 69 40 69 | 69 73 2e 65 74 68 7a 2e |<neeri@i|is.ethz.|
|000002c0| 63 68 3e 0d 0d 25 20 54 | 68 69 73 20 66 69 6c 65 |ch>..% T|his file|
|000002d0| 20 69 73 20 70 61 72 74 | 20 6f 66 20 47 55 53 49 | is part| of GUSI|
|000002e0| 0d 0d 25 20 48 65 72 65 | 20 69 73 20 54 65 58 20 |..% Here| is TeX |
|000002f0| 6d 61 74 65 72 69 61 6c | 20 74 68 61 74 20 67 65 |material| that ge|
|00000300| 74 73 20 69 6e 73 65 72 | 74 65 64 20 61 66 74 65 |ts inser|ted afte|
|00000310| 72 20 5c 69 6e 70 75 74 | 20 77 65 62 6d 61 63 0d |r \input| webmac.|
|00000320| 0d 25 20 5c 6d 65 73 73 | 61 67 65 7b 4f 4b 2c 20 |.% \mess|age{OK, |
|00000330| 65 6e 74 65 72 69 6e 67 | 20 5c 73 74 72 69 6e 67 |entering| \string|
|00000340| 5c 62 61 74 63 68 6d 6f | 64 65 2e 2e 2e 7d 0d 25 |\batchmo|de...}.%|
|00000350| 20 5c 62 61 74 63 68 6d | 6f 64 65 0d 0d 5c 64 65 | \batchm|ode..\de|
|00000360| 66 5c 68 61 6e 67 7b 5c | 68 61 6e 67 69 6e 64 65 |f\hang{\|hanginde|
|00000370| 6e 74 20 33 65 6d 5c 69 | 6e 64 65 6e 74 5c 69 67 |nt 3em\i|ndent\ig|
|00000380| 6e 6f 72 65 73 70 61 63 | 65 73 7d 0d 0d 5c 64 65 |norespac|es}..\de|
|00000390| 66 5c 74 69 74 6c 65 7b | 47 55 53 49 20 52 65 66 |f\title{|GUSI Ref|
|000003a0| 65 72 65 6e 63 65 7d 0d | 5c 64 65 66 5c 63 6f 6e |erence}.|\def\con|
|000003b0| 74 65 6e 74 73 70 61 67 | 65 6e 75 6d 62 65 72 7b |tentspag|enumber{|
|000003c0| 31 7d 20 25 20 73 68 6f | 75 6c 64 20 62 65 20 6f |1} % sho|uld be o|
|000003d0| 64 64 0d 5c 64 65 66 5c | 74 6f 70 6f 66 63 6f 6e |dd.\def\|topofcon|
|000003e0| 74 65 6e 74 73 7b 5c 6e | 75 6c 6c 5c 76 66 69 6c |tents{\n|ull\vfil|
|000003f0| 6c 0d 20 20 5c 74 69 74 | 6c 65 66 61 6c 73 65 20 |l.  \tit|lefalse |
|00000400| 25 20 69 6e 63 6c 75 64 | 65 20 68 65 61 64 6c 69 |% includ|e headli|
|00000410| 6e 65 20 6f 6e 20 74 68 | 65 20 63 6f 6e 74 65 6e |ne on th|e conten|
|00000420| 74 73 20 70 61 67 65 0d | 20 20 5c 64 65 66 5c 72 |ts page.|  \def\r|
|00000430| 68 65 61 64 65 72 7b 5c | 68 66 69 6c 7d 0d 20 20 |header{\|hfil}.  |
|00000440| 5c 63 65 6e 74 65 72 6c | 69 6e 65 7b 5c 74 74 69 |\centerl|ine{\tti|
|00000450| 74 6c 65 66 6f 6e 74 20 | 47 55 53 49 20 5c 74 69 |tlefont |GUSI \ti|
|00000460| 74 6c 65 66 6f 6e 74 20 | 2d 2d 2d 20 47 72 61 6e |tlefont |--- Gran|
|00000470| 64 20 55 6e 69 66 69 65 | 64 20 53 6f 63 6b 65 74 |d Unifie|d Socket|
|00000480| 20 49 6e 74 65 72 66 61 | 63 65 7d 0d 20 20 5c 76 | Interfa|ce}.  \v|
|00000490| 66 69 6c 6c 0d 7d 0d 0d | 5c 64 65 66 5c 6f 6e 65 |fill.}..|\def\one|
|000004a0| 63 6f 6c 6c 69 73 74 23 | 31 7b 5c 68 61 6c 69 67 |collist#|1{\halig|
|000004b0| 6e 7b 5c 71 75 61 64 24 | 5c 74 72 69 61 6e 67 6c |n{\quad$|\triangl|
|000004c0| 65 72 69 67 68 74 24 5c | 20 5c 76 74 6f 70 7b 0d |eright$\| \vtop{.|
|000004d0| 20 5c 68 73 69 7a 65 3d | 31 35 63 6d 5c 73 74 72 | \hsize=|15cm\str|
|000004e0| 75 74 23 23 5c 73 74 72 | 75 74 7d 5c 68 66 69 6c |ut##\str|ut}\hfil|
|000004f0| 5c 63 72 23 31 7d 7d 0d | 5c 64 65 66 5c 74 77 6f |\cr#1}}.|\def\two|
|00000500| 63 6f 6c 6c 69 73 74 23 | 31 7b 5c 68 61 6c 69 67 |collist#|1{\halig|
|00000510| 6e 7b 5c 71 75 61 64 24 | 5c 74 72 69 61 6e 67 6c |n{\quad$|\triangl|
|00000520| 65 72 69 67 68 74 24 5c | 62 66 5c 20 23 23 5c 68 |eright$\|bf\ ##\h|
|00000530| 66 69 6c 26 5c 71 75 61 | 64 0d 20 5c 76 74 6f 70 |fil&\qua|d. \vtop|
|00000540| 7b 5c 68 73 69 7a 65 3d | 31 33 63 6d 5c 73 74 72 |{\hsize=|13cm\str|
|00000550| 75 74 23 23 5c 73 74 72 | 75 74 7d 5c 68 66 69 6c |ut##\str|ut}\hfil|
|00000560| 5c 63 72 23 31 7d 7d 0d | 5c 64 65 66 5c 70 6c 61 |\cr#1}}.|\def\pla|
|00000570| 69 6e 6f 6e 65 63 6f 6c | 23 31 7b 5c 68 61 6c 69 |inonecol|#1{\hali|
|00000580| 67 6e 7b 5c 71 75 61 64 | 0d 20 5c 76 74 6f 70 7b |gn{\quad|. \vtop{|
|00000590| 5c 68 73 69 7a 65 3d 31 | 35 63 6d 5c 73 74 72 75 |\hsize=1|5cm\stru|
|000005a0| 74 23 23 5c 73 74 72 75 | 74 7d 5c 68 66 69 6c 5c |t##\stru|t}\hfil\|
|000005b0| 63 72 23 31 7d 7d 0d 5c | 64 65 66 5c 70 6c 61 69 |cr#1}}.\|def\plai|
|000005c0| 6e 74 77 6f 63 6f 6c 23 | 31 7b 5c 68 61 6c 69 67 |ntwocol#|1{\halig|
|000005d0| 6e 7b 5c 71 75 61 64 23 | 23 5c 68 66 69 6c 26 5c |n{\quad#|#\hfil&\|
|000005e0| 71 75 61 64 0d 20 5c 76 | 74 6f 70 7b 5c 68 73 69 |quad. \v|top{\hsi|
|000005f0| 7a 65 3d 31 33 63 6d 5c | 73 74 72 75 74 23 23 5c |ze=13cm\|strut##\|
|00000600| 73 74 72 75 74 7d 5c 68 | 66 69 6c 5c 63 72 23 31 |strut}\h|fil\cr#1|
|00000610| 7d 7d 0d 5c 64 65 66 5c | 62 69 62 6c 69 6f 6c 69 |}}.\def\|biblioli|
|00000620| 73 74 23 31 7b 5c 68 61 | 6c 69 67 6e 7b 5c 71 75 |st#1{\ha|lign{\qu|
|00000630| 61 64 5c 62 66 24 5b 24 | 23 23 24 5d 24 5c 68 66 |ad\bf$[$|##$]$\hf|
|00000640| 69 6c 26 5c 71 75 61 64 | 0d 20 5c 76 74 6f 70 7b |il&\quad|. \vtop{|
|00000650| 5c 68 73 69 7a 65 3d 31 | 33 63 6d 5c 73 74 72 75 |\hsize=1|3cm\stru|
|00000660| 74 23 23 5c 73 74 72 75 | 74 7d 5c 68 66 69 6c 5c |t##\stru|t}\hfil\|
|00000670| 63 72 23 31 7d 7d 0d 5c | 70 61 72 69 6e 64 65 6e |cr#1}}.\|parinden|
|00000680| 74 3d 30 70 74 0d 0d 0d | 5c 4e 31 2e 20 3d 20 49 |t=0pt...|\N1. = I|
|00000690| 6e 74 72 6f 64 75 63 74 | 69 6f 6e 2e 20 20 5c 2e |ntroduct|ion.  \.|
|000006a0| 7b 47 55 53 49 7d 20 69 | 73 20 61 6e 20 65 78 74 |{GUSI} i|s an ext|
|000006b0| 65 6e 73 69 6f 6e 20 61 | 6e 64 20 70 61 72 74 69 |ension a|nd parti|
|000006c0| 61 6c 20 72 65 70 6c 61 | 63 65 6d 65 6e 74 20 6f |al repla|cement o|
|000006d0| 66 20 74 68 65 0d 5c 2e | 7b 4d 50 57 7d 20 72 75 |f the.\.|{MPW} ru|
|000006e0| 6e 74 69 6d 65 20 6c 69 | 62 72 61 72 79 2e 20 49 |ntime li|brary. I|
|000006f0| 74 73 20 6d 61 69 6e 20 | 6f 62 6a 65 63 74 69 76 |ts main |objectiv|
|00000700| 65 20 69 73 20 74 6f 20 | 70 72 6f 76 69 64 65 20 |e is to |provide |
|00000710| 61 20 6d 6f 72 65 20 6f | 72 20 6c 65 73 73 20 73 |a more o|r less s|
|00000720| 69 6d 70 6c 65 0d 61 6e | 64 20 63 6f 6e 73 69 73 |imple.an|d consis|
|00000730| 74 65 6e 74 20 69 6e 74 | 65 72 66 61 63 65 20 61 |tent int|erface a|
|00000740| 63 72 6f 73 73 20 74 68 | 65 20 66 6f 6c 6c 6f 77 |cross th|e follow|
|00000750| 69 6e 67 20 7b 5c 69 74 | 20 63 6f 6d 6d 75 6e 69 |ing {\it| communi|
|00000760| 63 61 74 69 6f 6e 20 64 | 6f 6d 61 69 6e 73 7d 3a |cation d|omains}:|
|00000770| 0d 0d 5c 6d 65 64 73 6b | 69 70 5c 74 77 6f 63 6f |..\medsk|ip\twoco|
|00000780| 6c 6c 69 73 74 7b 0d 46 | 69 6c 65 73 26 4f 72 64 |llist{.F|iles&Ord|
|00000790| 69 6e 61 72 79 20 4d 61 | 63 69 6e 74 6f 73 68 20 |inary Ma|cintosh |
|000007a0| 66 69 6c 65 73 20 61 6e | 64 20 5c 2e 7b 4d 50 57 |files an|d \.{MPW|
|000007b0| 7d 20 70 73 65 75 64 6f | 20 64 65 76 69 63 65 73 |} pseudo| devices|
|000007c0| 2e 5c 63 72 0d 55 6e 69 | 78 26 4d 65 6d 6f 72 79 |.\cr.Uni|x&Memory|
|000007d0| 20 62 61 73 65 64 20 63 | 6f 6d 6d 75 6e 69 63 61 | based c|ommunica|
|000007e0| 74 69 6f 6e 20 77 69 74 | 68 69 6e 20 61 20 73 69 |tion wit|hin a si|
|000007f0| 6e 67 6c 65 20 6d 61 63 | 68 69 6e 65 20 28 54 68 |ngle mac|hine (Th|
|00000800| 69 73 20 6e 61 6d 65 20 | 65 78 69 73 74 73 20 66 |is name |exists f|
|00000810| 6f 72 0d 68 69 73 74 6f | 72 69 63 61 6c 20 72 65 |or.histo|rical re|
|00000820| 61 73 6f 6e 73 29 2e 5c | 63 72 0d 41 70 70 6c 65 |asons).\|cr.Apple|
|00000830| 74 61 6c 6b 26 5c 2e 7b | 41 44 53 50 7d 20 28 61 |talk&\.{|ADSP} (a|
|00000840| 6e 64 20 70 6f 73 73 69 | 62 6c 79 20 69 6e 20 74 |nd possi|bly in t|
|00000850| 68 65 20 66 75 74 75 72 | 65 20 5c 2e 7b 44 44 50 |he futur|e \.{DDP|
|00000860| 7d 29 20 63 6f 6d 6d 75 | 6e 69 63 61 74 69 6f 6e |}) commu|nication|
|00000870| 20 6f 76 65 72 20 61 0d | 6e 65 74 77 6f 72 6b 2e | over a.|network.|
|00000880| 5c 63 72 0d 50 50 43 26 | 4c 6f 63 61 6c 20 61 6e |\cr.PPC&|Local an|
|00000890| 64 20 72 65 6d 6f 74 65 | 20 63 6f 6e 6e 65 63 74 |d remote| connect|
|000008a0| 69 6f 6e 73 20 77 69 74 | 68 20 74 68 65 20 53 79 |ions wit|h the Sy|
|000008b0| 73 74 65 6d 20 37 20 5c | 2e 7b 50 50 43 20 54 6f |stem 7 \|.{PPC To|
|000008c0| 6f 6c 62 6f 78 7d 5c 63 | 72 0d 49 6e 74 65 72 6e |olbox}\c|r.Intern|
|000008d0| 65 74 26 5c 2e 7b 54 43 | 50 7d 20 61 6e 64 20 5c |et&\.{TC|P} and \|
|000008e0| 2e 7b 55 44 50 7d 20 63 | 6f 6e 6e 65 63 74 69 6f |.{UDP} c|onnectio|
|000008f0| 6e 73 20 6f 76 65 72 20 | 5c 2e 7b 4d 61 63 54 43 |ns over |\.{MacTC|
|00000900| 50 7d 2e 5c 63 72 0d 7d | 0d 0d 5c 6d 65 64 73 6b |P}.\cr.}|..\medsk|
|00000910| 69 70 0d 41 64 64 69 74 | 69 6f 6e 61 6c 6c 79 2c |ip.Addit|ionally,|
|00000920| 20 5c 2e 7b 47 55 53 49 | 7d 20 61 64 64 73 20 73 | \.{GUSI|} adds s|
|00000930| 6f 6d 65 20 5c 2e 7b 55 | 4e 49 58 7d 20 6c 69 62 |ome \.{U|NIX} lib|
|00000940| 72 61 72 79 20 63 61 6c | 6c 73 20 64 65 61 6c 69 |rary cal|ls deali|
|00000950| 6e 67 20 77 69 74 68 20 | 66 69 6c 65 73 0d 77 68 |ng with |files.wh|
|00000960| 69 63 68 0d 77 65 72 65 | 20 6d 69 73 73 69 6e 67 |ich.were| missing|
|00000970| 2c 20 6c 69 6b 65 20 5c | 43 44 7b 7d 24 5c 5c 7b |, like \|CD{}$\\{|
|00000980| 63 68 64 69 72 7d 28 5c | 2c 29 24 5c 44 43 7b 7d |chdir}(\|,)$\DC{}|
|00000990| 2c 20 5c 43 44 7b 7d 24 | 5c 5c 7b 67 65 74 63 77 |, \CD{}$|\\{getcw|
|000009a0| 64 7d 28 5c 2c 29 24 5c | 44 43 7b 7d 2c 20 25 0d |d}(\,)$\|DC{}, %.|
|000009b0| 5c 43 44 7b 7d 24 5c 5c | 7b 73 79 6d 6c 69 6e 6b |\CD{}$\\|{symlink|
|000009c0| 7d 28 5c 2c 29 24 5c 44 | 43 7b 7d 2c 20 61 6e 64 |}(\,)$\D|C{}, and|
|000009d0| 20 5c 43 44 7b 7d 24 5c | 5c 7b 72 65 61 64 6c 69 | \CD{}$\|\{readli|
|000009e0| 6e 6b 7d 28 5c 2c 29 24 | 5c 44 43 7b 7d 2c 20 61 |nk}(\,)$|\DC{}, a|
|000009f0| 6e 64 0d 63 68 61 6e 67 | 65 73 20 61 20 66 65 77 |nd.chang|es a few|
|00000a00| 20 6f 74 68 65 72 20 6c | 69 62 72 61 72 79 20 63 | other l|ibrary c|
|00000a10| 61 6c 6c 73 20 74 6f 20 | 62 65 68 61 76 65 20 6d |alls to |behave m|
|00000a20| 6f 72 65 20 6c 69 6b 65 | 20 74 68 65 69 72 20 5c |ore like| their \|
|00000a30| 2e 7b 55 4e 49 58 7d 0d | 63 6f 75 6e 74 65 72 70 |.{UNIX}.|counterp|
|00000a40| 61 72 74 73 2e 0d 0d 5c | 66 69 0d 0d 5c 4e 32 2e |arts...\|fi..\N2.|
|00000a50| 20 32 20 43 6f 70 79 69 | 6e 67 2e 0d 0d 5c 6d 65 | 2 Copyi|ng...\me|
|00000a60| 64 73 6b 69 70 20 43 6f | 70 79 72 69 67 68 74 20 |dskip Co|pyright |
|00000a70| 5c 63 6f 70 79 72 69 67 | 68 74 5c 20 31 39 39 32 |\copyrig|ht\ 1992|
|00000a80| 2c 20 31 39 39 33 20 4d | 61 74 74 68 69 61 73 20 |, 1993 M|atthias |
|00000a90| 4e 65 65 72 61 63 68 65 | 72 0d 0d 5c 6d 65 64 73 |Neerache|r..\meds|
|00000aa0| 6b 69 70 20 50 65 72 6d | 69 73 73 69 6f 6e 20 69 |kip Perm|ission i|
|00000ab0| 73 20 67 72 61 6e 74 65 | 64 20 74 6f 20 61 6e 79 |s grante|d to any|
|00000ac0| 6f 6e 65 20 74 6f 20 75 | 73 65 20 74 68 69 73 20 |one to u|se this |
|00000ad0| 73 6f 66 74 77 61 72 65 | 20 66 6f 72 20 61 6e 79 |software| for any|
|00000ae0| 0d 70 75 72 70 6f 73 65 | 20 6f 6e 20 61 6e 79 20 |.purpose| on any |
|00000af0| 63 6f 6d 70 75 74 65 72 | 20 73 79 73 74 65 6d 2c |computer| system,|
|00000b00| 20 61 6e 64 20 74 6f 20 | 72 65 64 69 73 74 72 69 | and to |redistri|
|00000b10| 62 75 74 65 20 69 74 20 | 66 72 65 65 6c 79 2c 0d |bute it |freely,.|
|00000b20| 73 75 62 6a 65 63 74 20 | 74 6f 20 74 68 65 20 66 |subject |to the f|
|00000b30| 6f 6c 6c 6f 77 69 6e 67 | 20 72 65 73 74 72 69 63 |ollowing| restric|
|00000b40| 74 69 6f 6e 73 3a 0d 0d | 5c 6d 65 64 73 6b 69 70 |tions:..|\medskip|
|00000b50| 5c 6f 6e 65 63 6f 6c 6c | 69 73 74 7b 0d 54 68 65 |\onecoll|ist{.The|
|00000b60| 20 61 75 74 68 6f 72 20 | 69 73 20 6e 6f 74 20 72 | author |is not r|
|00000b70| 65 73 70 6f 6e 73 69 62 | 6c 65 20 66 6f 72 20 74 |esponsib|le for t|
|00000b80| 68 65 20 63 6f 6e 73 65 | 71 75 65 6e 63 65 73 20 |he conse|quences |
|00000b90| 6f 66 20 75 73 65 20 6f | 66 0d 74 68 69 73 20 73 |of use o|f.this s|
|00000ba0| 6f 66 74 77 61 72 65 2c | 20 6e 6f 20 6d 61 74 74 |oftware,| no matt|
|00000bb0| 65 72 20 68 6f 77 20 61 | 77 66 75 6c 2c 20 65 76 |er how a|wful, ev|
|00000bc0| 65 6e 20 69 66 20 74 68 | 65 79 20 61 72 69 73 65 |en if th|ey arise|
|00000bd0| 0d 66 72 6f 6d 20 64 65 | 66 65 63 74 73 20 69 6e |.from de|fects in|
|00000be0| 20 69 74 2e 5c 63 72 0d | 54 68 65 20 6f 72 69 67 | it.\cr.|The orig|
|00000bf0| 69 6e 20 6f 66 20 74 68 | 69 73 20 73 6f 66 74 77 |in of th|is softw|
|00000c00| 61 72 65 20 6d 75 73 74 | 20 6e 6f 74 20 62 65 20 |are must| not be |
|00000c10| 6d 69 73 72 65 70 72 65 | 73 65 6e 74 65 64 2c 20 |misrepre|sented, |
|00000c20| 65 69 74 68 65 72 0d 62 | 79 20 65 78 70 6c 69 63 |either.b|y explic|
|00000c30| 69 74 20 63 6c 61 69 6d | 20 6f 72 20 62 79 20 6f |it claim| or by o|
|00000c40| 6d 69 73 73 69 6f 6e 2e | 5c 63 72 0d 41 6c 74 65 |mission.|\cr.Alte|
|00000c50| 72 65 64 20 76 65 72 73 | 69 6f 6e 73 20 6d 75 73 |red vers|ions mus|
|00000c60| 74 20 62 65 20 70 6c 61 | 69 6e 6c 79 20 6d 61 72 |t be pla|inly mar|
|00000c70| 6b 65 64 20 61 73 20 73 | 75 63 68 2c 20 61 6e 64 |ked as s|uch, and|
|00000c80| 20 6d 75 73 74 20 6e 6f | 74 0d 62 65 20 6d 69 73 | must no|t.be mis|
|00000c90| 72 65 70 72 65 73 65 6e | 74 65 64 20 61 73 20 62 |represen|ted as b|
|00000ca0| 65 69 6e 67 20 74 68 65 | 20 6f 72 69 67 69 6e 61 |eing the| origina|
|00000cb0| 6c 20 73 6f 66 74 77 61 | 72 65 2e 5c 63 72 0d 7d |l softwa|re.\cr.}|
|00000cc0| 0d 0d 5c 66 69 0d 0d 5c | 4e 33 2e 20 32 20 44 65 |..\fi..\|N3. 2 De|
|00000cd0| 73 69 67 6e 20 4f 62 6a | 65 63 74 69 76 65 73 2e |sign Obj|ectives.|
|00000ce0| 20 5c 2e 7b 47 55 53 49 | 7d 20 77 61 73 20 64 65 | \.{GUSI|} was de|
|00000cf0| 76 65 6c 6f 70 65 64 20 | 61 63 63 6f 72 64 69 6e |veloped |accordin|
|00000d00| 67 20 74 6f 20 61 74 20 | 6c 65 61 73 74 20 74 68 |g to at |least th|
|00000d10| 72 65 65 0d 6d 75 74 75 | 61 6c 6c 79 20 63 6f 6e |ree.mutu|ally con|
|00000d20| 66 6c 69 63 74 69 6e 67 | 20 73 74 61 6e 64 61 72 |flicting| standar|
|00000d30| 64 73 3a 0d 0d 5c 6d 65 | 64 73 6b 69 70 5c 6f 6e |ds:..\me|dskip\on|
|00000d40| 65 63 6f 6c 6c 69 73 74 | 7b 0d 54 68 65 20 64 65 |ecollist|{.The de|
|00000d50| 66 69 6e 69 74 69 6f 6e | 20 6f 66 20 74 68 65 20 |finition| of the |
|00000d60| 65 78 69 73 74 69 6e 67 | 20 43 20 6c 69 62 72 61 |existing| C libra|
|00000d70| 72 79 2e 5c 63 72 0d 54 | 68 65 20 62 65 68 61 76 |ry.\cr.T|he behav|
|00000d80| 69 6f 72 20 6f 66 20 74 | 68 65 20 63 6f 72 72 65 |ior of t|he corre|
|00000d90| 73 70 6f 6e 64 69 6e 67 | 20 55 4e 49 58 20 63 61 |sponding| UNIX ca|
|00000da0| 6c 6c 73 2e 5c 63 72 0d | 54 68 65 20 61 75 74 68 |lls.\cr.|The auth|
|00000db0| 6f 72 27 73 20 6a 75 64 | 67 65 6d 65 6e 74 2c 20 |or's jud|gement, |
|00000dc0| 70 72 65 6a 75 64 69 63 | 65 73 2c 20 6c 61 7a 69 |prejudic|es, lazi|
|00000dd0| 6e 65 73 73 2c 20 61 6e | 64 20 6c 69 6d 69 74 65 |ness, an|d limite|
|00000de0| 64 20 72 65 73 6f 75 72 | 63 65 73 2e 5c 63 72 0d |d resour|ces.\cr.|
|00000df0| 7d 0d 0d 5c 6d 65 64 73 | 6b 69 70 0d 49 6e 20 67 |}..\meds|kip.In g|
|00000e00| 65 6e 65 72 61 6c 2c 20 | 74 68 65 20 62 65 68 61 |eneral, |the beha|
|00000e10| 76 69 6f 72 20 6f 66 20 | 74 68 65 20 63 6f 72 72 |vior of |the corr|
|00000e20| 65 73 70 6f 6e 64 69 6e | 67 20 55 4e 49 58 20 6c |espondin|g UNIX l|
|00000e30| 69 62 72 61 72 79 20 63 | 61 6c 6c 20 77 61 73 0d |ibrary c|all was.|
|00000e40| 69 6d 70 6c 65 6d 65 6e | 74 65 64 2c 0d 73 69 6e |implemen|ted,.sin|
|00000e50| 63 65 20 74 68 69 73 20 | 66 61 63 69 6c 69 61 74 |ce this |faciliat|
|00000e60| 65 73 20 70 6f 72 74 69 | 6e 67 20 55 4e 49 58 20 |es porti|ng UNIX |
|00000e70| 75 74 69 6c 69 74 69 65 | 73 20 74 6f 20 74 68 65 |utilitie|s to the|
|00000e80| 20 4d 61 63 69 6e 74 6f | 73 68 2e 0d 0d 5c 66 69 | Macinto|sh...\fi|
|00000e90| 0d 0d 5c 4e 34 2e 20 32 | 20 41 63 6b 6e 6f 77 6c |..\N4. 2| Acknowl|
|00000ea0| 65 64 67 65 6d 65 6e 74 | 73 2e 20 49 20 77 6f 75 |edgement|s. I wou|
|00000eb0| 6c 64 20 6c 69 6b 65 20 | 74 6f 20 74 68 61 6e 6b |ld like |to thank|
|00000ec0| 20 61 6c 6c 20 77 68 6f | 20 68 61 76 65 20 61 67 | all who| have ag|
|00000ed0| 72 65 65 64 20 74 6f 20 | 62 65 74 61 20 74 65 73 |reed to |beta tes|
|00000ee0| 74 0d 74 68 69 73 0d 63 | 6f 64 65 20 61 6e 64 20 |t.this.c|ode and |
|00000ef0| 77 68 6f 20 68 61 76 65 | 20 70 72 6f 76 69 64 65 |who have| provide|
|00000f00| 64 20 66 65 65 64 62 61 | 63 6b 2e 0d 0d 5c 6d 65 |d feedba|ck...\me|
|00000f10| 64 73 6b 69 70 20 54 68 | 65 20 54 43 50 2f 49 50 |dskip Th|e TCP/IP|
|00000f20| 20 63 6f 64 65 20 69 6e | 20 5c 2e 7b 47 55 53 49 | code in| \.{GUSI|
|00000f30| 49 4e 45 54 2e 63 70 7d | 2c 20 5c 2e 7b 47 55 53 |INET.cp}|, \.{GUS|
|00000f40| 49 54 43 50 2e 63 70 7d | 2c 20 61 6e 64 20 5c 2e |ITCP.cp}|, and \.|
|00000f50| 7b 47 55 53 49 55 44 50 | 2e 63 70 7d 0d 69 73 0d |{GUSIUDP|.cp}.is.|
|00000f60| 64 65 72 69 76 65 64 20 | 66 72 6f 6d 20 61 20 73 |derived |from a s|
|00000f70| 6f 63 6b 65 74 20 6c 69 | 62 72 61 72 79 20 77 72 |ocket li|brary wr|
|00000f80| 69 74 74 65 6e 20 62 79 | 20 43 68 61 72 6c 69 65 |itten by| Charlie|
|00000f90| 20 52 65 69 6d 61 6e 20 | 24 3c 24 63 72 65 69 6d | Reiman |$<$creim|
|00000fa0| 61 6e 25 0d 5c 41 54 21 | 6e 63 73 61 2e 75 69 75 |an%.\AT!|ncsa.uiu|
|00000fb0| 63 2e 65 64 75 24 3e 24 | 2c 0d 77 68 69 63 68 20 |c.edu$>$|,.which |
|00000fc0| 69 6e 20 74 75 72 6e 20 | 69 73 20 62 61 73 65 64 |in turn |is based|
|00000fd0| 20 6f 6e 20 63 6f 64 65 | 20 77 72 69 74 74 65 6e | on code| written|
|00000fe0| 20 62 79 20 54 6f 6d 20 | 4d 69 6c 6c 69 67 61 6e | by Tom |Milligan|
|00000ff0| 20 24 3c 24 6d 69 6c 6c | 69 67 61 6e 25 0d 5c 41 | $<$mill|igan%.\A|
|00001000| 54 21 6d 61 64 68 61 75 | 73 2e 75 74 63 73 2e 75 |T!madhau|s.utcs.u|
|00001010| 74 6f 72 6f 6e 74 6f 2e | 63 61 24 3e 24 2e 0d 0d |toronto.|ca$>$...|
|00001020| 5c 6d 65 64 73 6b 69 70 | 20 54 68 65 20 68 65 61 |\medskip| The hea|
|00001030| 64 65 72 20 66 69 6c 65 | 73 20 69 6e 20 74 68 65 |der file|s in the|
|00001040| 20 5c 2e 7b 3a 48 65 61 | 64 65 72 73 3a 7d 20 73 | \.{:Hea|ders:} s|
|00001050| 75 62 64 69 72 65 63 74 | 6f 72 79 20 61 72 65 20 |ubdirect|ory are |
|00001060| 62 6f 72 72 6f 77 65 64 | 20 66 72 6f 6d 0d 42 53 |borrowed| from.BS|
|00001070| 44 20 55 6e 69 78 2c 0d | 74 68 65 72 65 66 6f 72 |D Unix,.|therefor|
|00001080| 65 3a 20 54 68 69 73 20 | 70 72 6f 64 75 63 74 20 |e: This |product |
|00001090| 69 6e 63 6c 75 64 65 73 | 20 73 6f 66 74 77 61 72 |includes| softwar|
|000010a0| 65 20 64 65 76 65 6c 6f | 70 65 64 20 62 79 20 74 |e develo|ped by t|
|000010b0| 68 65 20 55 6e 69 76 65 | 72 73 69 74 79 20 6f 66 |he Unive|rsity of|
|000010c0| 0d 43 61 6c 69 66 6f 72 | 6e 69 61 2c 0d 42 65 72 |.Califor|nia,.Ber|
|000010d0| 6b 65 6c 65 79 20 61 6e | 64 20 69 74 73 20 63 6f |keley an|d its co|
|000010e0| 6e 74 72 69 62 75 74 6f | 72 73 2e 0d 0d 5c 6d 65 |ntributo|rs...\me|
|000010f0| 64 73 6b 69 70 20 45 76 | 65 72 79 20 63 61 70 69 |dskip Ev|ery capi|
|00001100| 74 61 6c 69 7a 65 64 20 | 77 6f 72 64 20 69 6e 20 |talized |word in |
|00001110| 74 68 69 73 20 64 6f 63 | 75 6d 65 6e 74 61 74 69 |this doc|umentati|
|00001120| 6f 6e 20 6d 69 67 68 74 | 20 62 65 20 61 20 74 72 |on might| be a tr|
|00001130| 61 64 65 6d 61 72 6b 20 | 6f 66 0d 73 6f 6d 65 62 |ademark |of.someb|
|00001140| 6f 64 79 2e 0d 45 76 65 | 72 79 74 68 69 6e 67 20 |ody..Eve|rything |
|00001150| 72 65 6c 61 74 69 6e 67 | 20 74 6f 20 4d 61 63 73 |relating| to Macs|
|00001160| 20 69 73 20 70 72 6f 62 | 61 62 6c 79 20 61 20 74 | is prob|ably a t|
|00001170| 72 61 64 65 6d 61 72 6b | 20 6f 66 20 41 70 70 6c |rademark| of Appl|
|00001180| 65 2e 20 55 4e 49 58 20 | 69 73 20 61 0d 74 72 61 |e. UNIX |is a.tra|
|00001190| 64 65 6d 61 72 6b 20 6f | 66 0d 41 54 5c 61 6d 70 |demark o|f.AT\amp|
|000011a0| 20 54 2e 20 41 54 5c 61 | 6d 70 20 54 20 69 73 20 | T. AT\a|mp T is |
|000011b0| 61 20 6d 6f 64 65 6d 20 | 69 6e 69 74 69 61 6c 69 |a modem |initiali|
|000011c0| 7a 61 74 69 6f 6e 20 63 | 6f 6d 6d 61 6e 64 2e 0d |zation c|ommand..|
|000011d0| 0d 5c 66 69 0d 0d 5c 4e | 35 2e 20 3d 20 49 6e 73 |.\fi..\N|5. = Ins|
|000011e0| 74 61 6c 6c 69 6e 67 20 | 61 6e 64 20 75 73 69 6e |talling |and usin|
|000011f0| 67 20 47 55 53 49 2e 20 | 54 68 69 73 20 73 65 63 |g GUSI. |This sec|
|00001200| 74 69 6f 6e 20 64 69 73 | 63 75 73 73 65 73 20 68 |tion dis|cusses h|
|00001210| 6f 77 20 79 6f 75 20 63 | 61 6e 20 69 6e 73 74 61 |ow you c|an insta|
|00001220| 6c 6c 0d 5c 2e 7b 47 55 | 53 49 7d 20 6f 6e 20 79 |ll.\.{GU|SI} on y|
|00001230| 6f 75 72 20 64 69 73 6b | 20 61 6e 64 20 75 73 65 |our disk| and use|
|00001240| 20 69 74 20 66 6f 72 20 | 79 6f 75 72 20 70 72 6f | it for |your pro|
|00001250| 67 72 61 6d 73 2e 0d 0d | 5c 66 69 0d 0d 5c 4d 36 |grams...|\fi..\M6|
|00001260| 2e 20 54 6f 20 69 6e 73 | 74 61 6c 6c 20 5c 2e 7b |. To ins|tall \.{|
|00001270| 47 55 53 49 7d 2c 20 63 | 68 61 6e 67 65 20 69 6e |GUSI}, c|hange in|
|00001280| 20 74 68 65 20 4d 50 57 | 20 53 68 65 6c 6c 20 74 | the MPW| Shell t|
|00001290| 6f 20 69 74 73 20 64 69 | 72 65 63 74 6f 72 79 20 |o its di|rectory |
|000012a0| 61 6e 64 20 74 79 70 65 | 3a 0d 5c 6d 65 64 73 6b |and type|:.\medsk|
|000012b0| 69 70 0d 5c 2e 7b 42 75 | 69 6c 64 50 72 6f 67 72 |ip.\.{Bu|ildProgr|
|000012c0| 61 6d 20 49 6e 73 74 61 | 6c 6c 20 24 3c 24 45 6e |am Insta|ll $<$En|
|000012d0| 74 65 72 24 3e 24 7d 0d | 5c 6d 65 64 73 6b 69 70 |ter$>$}.|\medskip|
|000012e0| 0d 54 68 69 73 20 77 69 | 6c 6c 20 69 6e 73 74 61 |.This wi|ll insta|
|000012f0| 6c 6c 20 61 6c 6c 20 6e | 65 63 65 73 73 61 72 79 |ll all n|ecessary|
|00001300| 20 68 65 61 64 65 72 20 | 66 69 6c 65 73 20 69 6e | header |files in|
|00001310| 20 5c 2e 7b 5c 7b 43 49 | 6e 63 6c 75 64 65 73 5c | \.{\{CI|ncludes\|
|00001320| 7d 7d 2c 20 61 6e 64 20 | 74 68 65 0d 6c 69 62 72 |}}, and |the.libr|
|00001330| 61 72 79 0d 66 69 6c 65 | 20 69 6e 20 5c 2e 7b 5c |ary.file| in \.{\|
|00001340| 7b 43 4c 69 62 72 61 72 | 69 65 73 5c 7d 7d 2e 0d |{CLibrar|ies\}}..|
|00001350| 0d 5c 66 69 0d 0d 5c 4d | 37 2e 20 54 6f 20 75 73 |.\fi..\M|7. To us|
|00001360| 65 20 5c 2e 7b 47 55 53 | 49 7d 2c 20 69 6e 63 6c |e \.{GUS|I}, incl|
|00001370| 75 64 65 20 6f 6e 65 20 | 6f 72 20 6d 6f 72 65 20 |ude one |or more |
|00001380| 6f 66 20 74 68 65 20 66 | 6f 6c 6c 6f 77 69 6e 67 |of the f|ollowing|
|00001390| 20 68 65 61 64 65 72 20 | 66 69 6c 65 73 20 69 6e | header |files in|
|000013a0| 20 79 6f 75 72 0d 70 72 | 6f 67 72 61 6d 3a 0d 5c | your.pr|ogram:.\|
|000013b0| 6d 65 64 73 6b 69 70 5c | 70 6c 61 69 6e 74 77 6f |medskip\|plaintwo|
|000013c0| 63 6f 6c 7b 0d 5c 2e 7b | 47 55 53 49 2e 68 7d 26 |col{.\.{|GUSI.h}&|
|000013d0| 54 68 65 20 6d 61 69 6e | 20 66 69 6c 65 2e 20 54 |The main| file. T|
|000013e0| 68 69 73 20 69 6e 63 6c | 75 64 65 73 20 61 6c 6d |his incl|udes alm|
|000013f0| 6f 73 74 20 65 76 65 72 | 79 74 68 69 6e 67 20 65 |ost ever|ything e|
|00001400| 6c 73 65 2e 5c 63 72 0d | 5c 2e 7b 54 46 69 6c 65 |lse.\cr.|\.{TFile|
|00001410| 53 70 65 63 2e 68 7d 26 | 5c 43 44 7b 7d 24 5c 5c |Spec.h}&|\CD{}$\\|
|00001420| 7b 46 53 53 70 65 63 7d | 24 5c 44 43 7b 7d 20 6d |{FSSpec}|$\DC{} m|
|00001430| 61 6e 69 70 75 6c 61 74 | 69 6f 6e 20 72 6f 75 74 |anipulat|ion rout|
|00001440| 69 6e 65 73 2e 5c 63 72 | 0d 5c 2e 7b 64 69 72 65 |ines.\cr|.\.{dire|
|00001450| 6e 74 2e 68 7d 26 52 6f | 75 74 69 6e 65 73 20 74 |nt.h}&Ro|utines t|
|00001460| 6f 20 61 63 63 65 73 73 | 20 61 6c 6c 20 65 6e 74 |o access| all ent|
|00001470| 72 69 65 73 20 69 6e 20 | 61 20 64 69 72 65 63 74 |ries in |a direct|
|00001480| 6f 72 79 2e 5c 63 72 0d | 5c 2e 7b 73 79 73 2f 73 |ory.\cr.|\.{sys/s|
|00001490| 74 61 74 2e 68 7d 26 47 | 65 74 74 69 6e 67 20 69 |tat.h}&G|etting i|
|000014a0| 6e 66 6f 72 6d 61 74 69 | 6f 6e 20 61 62 6f 75 74 |nformati|on about|
|000014b0| 20 66 69 6c 65 73 2e 5c | 63 72 0d 5c 2e 7b 6e 65 | files.\|cr.\.{ne|
|000014c0| 74 64 62 2e 68 7d 26 4c | 6f 6f 6b 69 6e 67 20 75 |tdb.h}&L|ooking u|
|000014d0| 70 20 54 43 50 2f 49 50 | 20 68 6f 73 74 20 6e 61 |p TCP/IP| host na|
|000014e0| 6d 65 73 2e 5c 63 72 0d | 5c 2e 7b 6e 65 74 69 6e |mes.\cr.|\.{netin|
|000014f0| 65 74 2f 69 6e 2e 68 7d | 26 54 68 65 20 61 64 64 |et/in.h}|&The add|
|00001500| 72 65 73 73 20 66 6f 72 | 6d 61 74 20 66 6f 72 20 |ress for|mat for |
|00001510| 54 43 50 2f 49 50 20 73 | 6f 63 6b 65 74 73 2e 5c |TCP/IP s|ockets.\|
|00001520| 63 72 0d 5c 2e 7b 73 79 | 73 2f 65 72 72 6e 6f 2e |cr.\.{sy|s/errno.|
|00001530| 68 7d 26 54 68 65 20 65 | 72 72 6f 72 73 20 63 6f |h}&The e|rrors co|
|00001540| 64 65 73 20 72 65 74 75 | 72 6e 65 64 20 62 79 20 |des retu|rned by |
|00001550| 47 55 53 49 20 72 6f 75 | 74 69 6e 65 73 2e 5c 63 |GUSI rou|tines.\c|
|00001560| 72 0d 5c 2e 7b 73 79 73 | 2f 69 6f 63 74 6c 2e 68 |r.\.{sys|/ioctl.h|
|00001570| 7d 26 43 6f 64 65 73 20 | 74 6f 20 70 61 73 73 20 |}&Codes |to pass |
|00001580| 74 6f 20 5c 43 44 7b 7d | 24 5c 5c 7b 69 6f 63 74 |to \CD{}|$\\{ioct|
|00001590| 6c 7d 28 5c 2c 29 24 5c | 44 43 7b 7d 2e 5c 63 72 |l}(\,)$\|DC{}.\cr|
|000015a0| 0d 5c 2e 7b 73 79 73 2f | 73 6f 63 6b 65 74 2e 68 |.\.{sys/|socket.h|
|000015b0| 7d 26 44 61 74 61 20 74 | 79 70 65 73 20 66 6f 72 |}&Data t|ypes for|
|000015c0| 20 73 6f 63 6b 65 74 20 | 63 61 6c 6c 73 2e 5c 63 | socket |calls.\c|
|000015d0| 72 0d 5c 2e 7b 73 79 73 | 2f 74 79 70 65 73 2e 68 |r.\.{sys|/types.h|
|000015e0| 7d 26 4d 6f 72 65 20 64 | 61 74 61 20 74 79 70 65 |}&More d|ata type|
|000015f0| 73 2e 5c 63 72 0d 5c 2e | 7b 73 79 73 2f 75 69 6f |s.\cr.\.|{sys/uio|
|00001600| 2e 68 7d 26 44 61 74 61 | 20 74 79 70 65 73 20 66 |.h}&Data| types f|
|00001610| 6f 72 20 73 63 61 74 74 | 65 72 2f 67 61 74 68 65 |or scatt|er/gathe|
|00001620| 72 20 63 61 6c 6c 73 2e | 5c 63 72 0d 7d 0d 0d 5c |r calls.|\cr.}..\|
|00001630| 66 69 0d 0d 5c 4d 38 2e | 20 47 55 53 49 20 65 78 |fi..\M8.| GUSI ex|
|00001640| 70 65 63 74 73 20 74 68 | 65 20 4d 61 63 69 6e 74 |pects th|e Macint|
|00001650| 6f 73 68 20 54 6f 6f 6c | 62 6f 78 20 74 6f 20 62 |osh Tool|box to b|
|00001660| 65 20 69 6e 69 74 69 61 | 6c 69 7a 65 64 2e 20 54 |e initia|lized. T|
|00001670| 68 69 73 20 77 69 6c 6c | 20 68 61 70 70 65 6e 0d |his will| happen.|
|00001680| 61 75 74 6f 6d 61 74 69 | 63 61 6c 6c 79 0d 69 66 |automati|cally.if|
|00001690| 20 79 6f 75 27 72 65 20 | 77 72 69 74 69 6e 67 20 | you're |writing |
|000016a0| 61 6e 20 5c 2e 7b 4d 50 | 57 7d 20 74 6f 6f 6c 20 |an \.{MP|W} tool |
|000016b0| 6f 72 20 69 66 20 79 6f | 75 20 61 72 65 20 6c 69 |or if yo|u are li|
|000016c0| 6e 6b 69 6e 67 20 77 69 | 74 68 20 5c 2e 7b 53 49 |nking wi|th \.{SI|
|000016d0| 4f 57 7d 20 61 6e 64 20 | 61 72 65 0d 66 6f 72 63 |OW} and |are.forc|
|000016e0| 69 6e 67 0d 61 20 77 72 | 69 74 65 20 74 6f 20 73 |ing.a wr|ite to s|
|000016f0| 74 61 6e 64 61 72 64 20 | 6f 75 74 70 75 74 20 6f |tandard |output o|
|00001700| 72 20 73 74 61 6e 64 61 | 72 64 20 65 72 72 6f 72 |r standa|rd error|
|00001710| 20 62 65 66 6f 72 65 20 | 79 6f 75 20 61 72 65 20 | before |you are |
|00001720| 75 73 69 6e 67 20 61 6e | 79 20 6e 6f 6e 2d 66 69 |using an|y non-fi|
|00001730| 6c 65 20 25 0d 5c 2e 7b | 47 55 53 49 7d 0d 72 6f |le %.\.{|GUSI}.ro|
|00001740| 75 74 69 6e 65 73 2e 20 | 4f 74 68 65 72 77 69 73 |utines. |Otherwis|
|00001750| 65 2c 20 79 6f 75 20 73 | 68 6f 75 6c 64 20 69 6e |e, you s|hould in|
|00001760| 69 74 20 74 68 65 20 54 | 6f 6f 6c 62 6f 78 20 69 |it the T|oolbox i|
|00001770| 6e 20 74 68 65 20 66 6f | 6c 6c 6f 77 69 6e 67 20 |n the fo|llowing |
|00001780| 77 61 79 3a 0d 5c 59 5c | 50 20 24 5c 5c 7b 49 6e |way:.\Y\|P $\\{In|
|00001790| 69 74 47 72 61 66 7d 28 | 28 5c 5c 7b 50 74 72 7d |itGraf}(|(\\{Ptr}|
|000017a0| 29 5c 61 6d 70 5c 5c 7b | 71 64 7d 2e 5c 5c 7b 74 |)\amp\\{|qd}.\\{t|
|000017b0| 68 65 50 6f 72 74 7d 29 | 3b 24 5c 36 0d 24 5c 5c |hePort})|;$\6.$\\|
|000017c0| 7b 49 6e 69 74 46 6f 6e | 74 73 7d 28 5c 2c 29 3b |{InitFon|ts}(\,);|
|000017d0| 24 5c 36 0d 24 5c 5c 7b | 49 6e 69 74 57 69 6e 64 |$\6.$\\{|InitWind|
|000017e0| 6f 77 73 7d 28 5c 2c 29 | 3b 24 5c 36 0d 24 5c 5c |ows}(\,)|;$\6.$\\|
|000017f0| 7b 49 6e 69 74 4d 65 6e | 75 73 7d 28 5c 2c 29 3b |{InitMen|us}(\,);|
|00001800| 24 5c 36 0d 24 5c 5c 7b | 54 45 49 6e 69 74 7d 28 |$\6.$\\{|TEInit}(|
|00001810| 5c 2c 29 3b 24 5c 36 0d | 24 5c 5c 7b 49 6e 69 74 |\,);$\6.|$\\{Init|
|00001820| 44 69 61 6c 6f 67 73 7d | 28 5c 5c 7b 6e 69 6c 7d |Dialogs}|(\\{nil}|
|00001830| 29 3b 24 5c 36 0d 24 5c | 5c 7b 49 6e 69 74 43 75 |);$\6.$\|\{InitCu|
|00001840| 72 73 6f 72 7d 28 5c 2c | 29 3b 24 5c 70 61 72 0d |rsor}(\,|);$\par.|
|00001850| 5c 66 69 0d 0d 5c 4d 39 | 2e 20 59 6f 75 20 68 61 |\fi..\M9|. You ha|
|00001860| 76 65 20 74 6f 20 6c 69 | 6e 6b 20 79 6f 75 72 20 |ve to li|nk your |
|00001870| 70 72 6f 67 72 61 6d 20 | 77 69 74 68 20 6f 6e 65 |program |with one|
|00001880| 20 6f 66 20 74 68 65 20 | 76 61 72 69 61 6e 74 73 | of the |variants|
|00001890| 20 6f 66 20 74 68 65 20 | 5c 2e 7b 47 55 53 49 7d | of the |\.{GUSI}|
|000018a0| 0d 6c 69 62 72 61 72 79 | 2c 0d 6c 69 6b 65 20 5c |.library|,.like \|
|000018b0| 2e 7b 60 60 5c 7b 43 4c | 69 62 72 61 72 69 65 73 |.{``\{CL|ibraries|
|000018c0| 5c 7d 47 55 53 49 2e 6f | 27 27 7d 2c 20 69 66 20 |\}GUSI.o|''}, if |
|000018d0| 79 6f 75 20 61 72 65 20 | 75 73 69 6e 67 20 73 6f |you are |using so|
|000018e0| 63 6b 65 74 73 2c 20 6f | 72 0d 5c 2e 7b 60 60 5c |ckets, o|r.\.{``\|
|000018f0| 7b 43 4c 69 62 72 61 72 | 69 65 73 5c 7d 47 55 53 |{CLibrar|ies\}GUS|
|00001900| 49 5c 5f 46 2e 6f 27 27 | 7d 2c 20 69 66 20 79 6f |I\_F.o''|}, if yo|
|00001910| 75 20 61 72 65 20 75 73 | 69 6e 67 20 6f 6e 6c 79 |u are us|ing only|
|00001920| 20 74 68 65 20 66 69 6c | 65 20 73 79 73 74 65 6d | the fil|e system|
|00001930| 0d 63 6f 6d 70 6f 6e 65 | 6e 74 2e 0d 49 74 27 73 |.compone|nt..It's|
|00001940| 20 69 6d 70 6f 72 74 61 | 6e 74 20 74 68 61 74 20 | importa|nt that |
|00001950| 74 68 65 73 65 20 66 69 | 6c 65 73 20 61 70 70 65 |these fi|les appe|
|00001960| 61 72 20 7b 5c 69 74 20 | 62 65 66 6f 72 65 7d 20 |ar {\it |before} |
|00001970| 61 6c 6c 20 6f 74 68 65 | 72 20 6c 69 62 72 61 72 |all othe|r librar|
|00001980| 69 65 73 2e 20 59 6f 75 | 0d 77 69 6c 6c 0d 67 65 |ies. You|.will.ge|
|00001990| 74 20 6c 6f 74 73 20 6f | 66 20 77 61 72 6e 69 6e |t lots o|f warnin|
|000019a0| 67 20 6d 65 73 73 61 67 | 65 73 20 61 62 6f 75 74 |g messag|es about|
|000019b0| 20 64 75 70 6c 69 63 61 | 74 65 20 64 65 66 69 6e | duplica|te defin|
|000019c0| 69 74 69 6f 6e 73 2c 20 | 62 75 74 20 74 68 61 74 |itions, |but that|
|000019d0| 27 73 20 6f 6b 20 28 57 | 68 69 63 68 0d 6d 65 61 |'s ok (W|hich.mea|
|000019e0| 6e 73 20 49 20 63 61 6e | 27 74 20 64 6f 20 61 6e |ns I can|'t do an|
|000019f0| 79 74 68 69 6e 67 20 61 | 62 6f 75 74 20 69 74 29 |ything a|bout it)|
|00001a00| 2e 0d 0d 5c 66 69 0d 0d | 5c 4d 31 30 2e 20 59 6f |...\fi..|\M10. Yo|
|00001a10| 75 20 73 68 6f 75 6c 64 | 20 61 6c 73 6f 20 72 65 |u should| also re|
|00001a20| 7a 20 79 6f 75 72 20 70 | 72 6f 67 72 61 6d 20 77 |z your p|rogram w|
|00001a30| 69 74 68 20 5c 2e 7b 47 | 55 53 49 2e 72 7d 2e 20 |ith \.{G|USI.r}. |
|00001a40| 54 68 65 20 73 65 63 74 | 69 6f 6e 0d 60 60 52 65 |The sect|ion.``Re|
|00001a50| 73 6f 75 72 63 65 73 27 | 27 20 62 65 6c 6f 77 0d |sources'|' below.|
|00001a60| 64 69 73 63 75 73 73 65 | 73 20 77 68 65 6e 20 61 |discusse|s when a|
|00001a70| 6e 64 20 68 6f 77 20 74 | 6f 20 61 64 64 20 79 6f |nd how t|o add yo|
|00001a80| 75 72 20 6f 77 6e 20 63 | 6f 6e 66 69 67 75 72 61 |ur own c|onfigura|
|00001a90| 74 69 6f 6e 20 72 65 73 | 6f 75 72 63 65 20 74 6f |tion res|ource to|
|00001aa0| 20 63 75 73 74 6f 6d 69 | 7a 65 20 25 0d 5c 2e 7b | customi|ze %.\.{|
|00001ab0| 47 55 53 49 7d 0d 64 65 | 66 61 75 6c 74 73 2e 0d |GUSI}.de|faults..|
|00001ac0| 0d 5c 66 69 0d 0d 5c 4e | 31 31 2e 20 3d 20 4f 76 |.\fi..\N|11. = Ov|
|00001ad0| 65 72 76 69 65 77 2e 20 | 54 68 69 73 20 73 65 63 |erview. |This sec|
|00001ae0| 74 69 6f 6e 20 64 69 73 | 63 75 73 73 65 73 20 74 |tion dis|cusses t|
|00001af0| 68 65 20 72 6f 75 74 69 | 6e 65 73 20 63 6f 6d 6d |he routi|nes comm|
|00001b00| 6f 6e 20 74 6f 20 61 6c | 6c 2c 20 6f 72 20 61 6c |on to al|l, or al|
|00001b10| 6d 6f 73 74 0d 61 6c 6c | 0d 63 6f 6d 6d 75 6e 69 |most.all|.communi|
|00001b20| 63 61 74 69 6f 6e 20 64 | 6f 6d 61 69 6e 73 2e 20 |cation d|omains. |
|00001b30| 54 68 65 73 65 20 72 6f | 75 74 69 6e 65 73 20 72 |These ro|utines r|
|00001b40| 65 74 75 72 6e 20 5c 43 | 44 7b 7d 24 7b 2d 7d 5c |eturn \C|D{}${-}\|
|00001b50| 4f 7b 31 7d 24 5c 44 43 | 7b 7d 20 69 66 20 61 6e |O{1}$\DC|{} if an|
|00001b60| 20 65 72 72 6f 72 0d 6f | 63 63 75 72 72 65 64 2c | error.o|ccurred,|
|00001b70| 0d 61 6e 64 20 73 65 74 | 20 74 68 65 20 76 61 72 |.and set| the var|
|00001b80| 69 61 62 6c 65 20 5c 43 | 44 7b 7d 24 5c 5c 7b 65 |iable \C|D{}$\\{e|
|00001b90| 72 72 6e 6f 7d 24 5c 44 | 43 7b 7d 20 74 6f 20 61 |rrno}$\D|C{} to a|
|00001ba0| 6e 20 65 72 72 6f 72 20 | 63 6f 64 65 2e 20 4f 6e |n error |code. On|
|00001bb0| 20 73 75 63 63 65 73 73 | 2c 20 74 68 65 0d 72 6f | success|, the.ro|
|00001bc0| 75 74 69 6e 65 73 20 72 | 65 74 75 72 6e 20 5c 43 |utines r|eturn \C|
|00001bd0| 44 7b 7d 24 5c 4f 7b 30 | 7d 24 5c 44 43 7b 7d 0d |D{}$\O{0|}$\DC{}.|
|00001be0| 6f 72 20 73 6f 6d 65 20 | 70 6f 73 69 74 69 76 65 |or some |positive|
|00001bf0| 20 76 61 6c 75 65 2e 0d | 0d 5c 6d 65 64 73 6b 69 | value..|.\medski|
|00001c00| 70 0d 53 6f 6d 65 20 63 | 6f 6d 6d 6f 6e 20 65 72 |p.Some c|ommon er|
|00001c10| 72 6f 72 20 63 6f 64 65 | 73 20 61 72 65 3a 0d 5c |ror code|s are:.\|
|00001c20| 6d 65 64 73 6b 69 70 5c | 70 6c 61 69 6e 74 77 6f |medskip\|plaintwo|
|00001c30| 63 6f 6c 7b 0d 5c 43 44 | 7b 7d 24 5c 5c 7b 45 42 |col{.\CD|{}$\\{EB|
|00001c40| 41 44 46 7d 24 5c 44 43 | 7b 7d 26 54 68 65 20 64 |ADF}$\DC|{}&The d|
|00001c50| 65 73 63 72 69 70 74 6f | 72 20 6e 75 6d 62 65 72 |escripto|r number|
|00001c60| 20 79 6f 75 20 70 61 73 | 73 65 64 20 64 6f 65 73 | you pas|sed does|
|00001c70| 6e 27 74 20 72 65 66 65 | 72 20 74 6f 20 61 20 76 |n't refe|r to a v|
|00001c80| 61 6c 69 64 0d 66 69 6c | 65 20 6f 72 20 73 6f 63 |alid.fil|e or soc|
|00001c90| 6b 65 74 2e 5c 63 72 0d | 5c 43 44 7b 7d 24 5c 5c |ket.\cr.|\CD{}$\\|
|00001ca0| 7b 45 4e 4f 4d 45 4d 7d | 24 5c 44 43 7b 7d 26 53 |{ENOMEM}|$\DC{}&S|
|00001cb0| 6f 6d 65 20 6d 65 6d 6f | 72 79 20 65 72 72 6f 72 |ome memo|ry error|
|00001cc0| 20 6f 63 63 75 72 72 65 | 64 2e 5c 63 72 0d 5c 43 | occurre|d.\cr.\C|
|00001cd0| 44 7b 7d 24 5c 5c 7b 45 | 49 4e 54 52 7d 24 5c 44 |D{}$\\{E|INTR}$\D|
|00001ce0| 43 7b 7d 26 54 68 65 20 | 75 73 65 72 20 69 6e 74 |C{}&The |user int|
|00001cf0| 65 72 72 75 70 74 65 64 | 20 61 20 6c 65 6e 67 74 |errupted| a lengt|
|00001d00| 68 79 20 6f 70 65 72 61 | 74 69 6f 6e 20 62 79 20 |hy opera|tion by |
|00001d10| 70 72 65 73 73 69 6e 67 | 0d 43 6f 6d 6d 61 6e 64 |pressing|.Command|
|00001d20| 2d 50 65 72 69 6f 64 2e | 5c 63 72 0d 5c 43 44 7b |-Period.|\cr.\CD{|
|00001d30| 7d 24 5c 5c 7b 45 4e 4f | 54 43 4f 4e 4e 7d 24 5c |}$\\{ENO|TCONN}$\|
|00001d40| 44 43 7b 7d 26 54 68 65 | 20 73 6f 63 6b 65 74 20 |DC{}&The| socket |
|00001d50| 69 73 20 6e 6f 74 20 63 | 6f 6e 6e 65 63 74 65 64 |is not c|onnected|
|00001d60| 20 61 6e 64 20 6d 75 73 | 74 20 62 65 20 63 6f 6e | and mus|t be con|
|00001d70| 6e 65 63 74 65 64 20 66 | 6f 72 0d 74 68 69 73 20 |nected f|or.this |
|00001d80| 6f 70 65 72 61 74 69 6f | 6e 2e 5c 63 72 0d 7d 0d |operatio|n.\cr.}.|
|00001d90| 0d 5c 66 69 0d 0d 5c 4e | 31 32 2e 20 32 20 43 72 |.\fi..\N|12. 2 Cr|
|00001da0| 65 61 74 69 6e 67 20 61 | 6e 64 20 64 65 73 74 72 |eating a|nd destr|
|00001db0| 6f 79 69 6e 67 20 73 6f | 63 6b 65 74 73 2e 20 41 |oying so|ckets. A|
|00001dc0| 20 73 6f 63 6b 65 74 20 | 69 73 20 63 72 65 61 74 | socket |is creat|
|00001dd0| 65 64 20 77 69 74 68 20 | 5c 43 44 7b 7d 24 25 0d |ed with |\CD{}$%.|
|00001de0| 5c 5c 7b 73 6f 63 6b 65 | 74 7d 28 5c 2c 29 24 5c |\\{socke|t}(\,)$\|
|00001df0| 44 43 7b 7d 20 61 6e 64 | 20 64 65 73 74 72 6f 79 |DC{} and| destroy|
|00001e00| 65 64 0d 77 69 74 68 20 | 5c 43 44 7b 7d 24 5c 5c |ed.with |\CD{}$\\|
|00001e10| 7b 63 6c 6f 73 65 7d 28 | 5c 2c 29 24 5c 44 43 7b |{close}(|\,)$\DC{|
|00001e20| 7d 2e 0d 0d 5c 66 69 0d | 0d 5c 4d 31 33 2e 20 5c |}...\fi.|.\M13. \|
|00001e30| 43 44 7b 7d 24 5c 26 7b | 69 6e 74 7d 5c 20 5c 5c |CD{}$\&{|int}\ \\|
|00001e40| 7b 73 6f 63 6b 65 74 7d | 28 5c 26 7b 69 6e 74 7d |{socket}|(\&{int}|
|00001e50| 5c 20 5c 5c 7b 61 66 7d | 2c 5c 3b 5c 26 7b 69 6e |\ \\{af}|,\;\&{in|
|00001e60| 74 7d 5c 20 5c 5c 7b 74 | 79 70 65 7d 2c 5c 3b 5c |t}\ \\{t|ype},\;\|
|00001e70| 26 7b 69 6e 74 7d 5c 20 | 25 0d 5c 5c 7b 70 72 6f |&{int}\ |%.\\{pro|
|00001e80| 74 6f 63 6f 6c 7d 29 24 | 5c 44 43 7b 7d 20 63 72 |tocol})$|\DC{} cr|
|00001e90| 65 61 74 65 73 20 61 6e | 20 65 6e 64 70 6f 69 6e |eates an| endpoin|
|00001ea0| 74 20 66 6f 72 20 63 6f | 6d 6d 75 6e 69 63 61 74 |t for co|mmunicat|
|00001eb0| 69 6f 6e 0d 61 6e 64 20 | 72 65 74 75 72 6e 73 20 |ion.and |returns |
|00001ec0| 61 20 64 65 73 63 72 69 | 70 74 6f 72 2e 20 5c 43 |a descri|ptor. \C|
|00001ed0| 44 7b 7d 24 5c 5c 7b 61 | 66 7d 24 5c 44 43 7b 7d |D{}$\\{a|f}$\DC{}|
|00001ee0| 20 73 70 65 63 69 66 69 | 65 73 20 74 68 65 20 63 | specifi|es the c|
|00001ef0| 6f 6d 6d 75 6e 69 63 61 | 74 69 6f 6e 20 64 6f 6d |ommunica|tion dom|
|00001f00| 61 69 6e 0d 74 6f 20 62 | 65 20 75 73 65 64 2e 20 |ain.to b|e used. |
|00001f10| 56 61 6c 69 64 0d 76 61 | 6c 75 65 73 20 61 72 65 |Valid.va|lues are|
|00001f20| 3a 0d 5c 6d 65 64 73 6b | 69 70 5c 70 6c 61 69 6e |:.\medsk|ip\plain|
|00001f30| 74 77 6f 63 6f 6c 7b 0d | 5c 43 44 7b 7d 24 5c 5c |twocol{.|\CD{}$\\|
|00001f40| 7b 41 46 5c 5f 55 4e 49 | 58 7d 24 5c 44 43 7b 7d |{AF\_UNI|X}$\DC{}|
|00001f50| 26 43 6f 6d 6d 75 6e 69 | 63 61 74 69 6f 6e 20 69 |&Communi|cation i|
|00001f60| 6e 74 65 72 6e 61 6c 20 | 74 6f 20 61 20 73 69 6e |nternal |to a sin|
|00001f70| 67 6c 65 20 4d 61 63 2e | 5c 63 72 0d 5c 43 44 7b |gle Mac.|\cr.\CD{|
|00001f80| 7d 24 5c 5c 7b 41 46 5c | 5f 49 4e 45 54 7d 24 5c |}$\\{AF\|_INET}$\|
|00001f90| 44 43 7b 7d 26 54 43 50 | 2f 49 50 2c 20 75 73 69 |DC{}&TCP|/IP, usi|
|00001fa0| 6e 67 20 5c 2e 7b 4d 61 | 63 54 43 50 7d 2e 5c 63 |ng \.{Ma|cTCP}.\c|
|00001fb0| 72 0d 5c 43 44 7b 7d 24 | 5c 5c 7b 41 46 5c 5f 41 |r.\CD{}$|\\{AF\_A|
|00001fc0| 50 50 4c 45 54 41 4c 4b | 7d 24 5c 44 43 7b 7d 26 |PPLETALK|}$\DC{}&|
|00001fd0| 41 70 70 6c 65 74 61 6c | 6b 2c 20 75 73 69 6e 67 |Appletal|k, using|
|00001fe0| 20 41 44 53 50 2e 5c 63 | 72 0d 5c 43 44 7b 7d 24 | ADSP.\c|r.\CD{}$|
|00001ff0| 5c 5c 7b 41 46 5c 5f 50 | 50 43 7d 24 5c 44 43 7b |\\{AF\_P|PC}$\DC{|
|00002000| 7d 26 54 68 65 20 50 72 | 6f 67 72 61 6d 2d 74 6f |}&The Pr|ogram-to|
|00002010| 2d 50 72 6f 67 72 61 6d | 20 43 6f 6d 6d 75 6e 69 |-Program| Communi|
|00002020| 63 61 74 69 6f 6e 20 54 | 6f 6f 6c 62 6f 78 2e 5c |cation T|oolbox.\|
|00002030| 63 72 0d 7d 0d 5c 6d 65 | 64 73 6b 69 70 0d 5c 43 |cr.}.\me|dskip.\C|
|00002040| 44 7b 7d 24 5c 5c 7b 74 | 79 70 65 7d 24 5c 44 43 |D{}$\\{t|ype}$\DC|
|00002050| 7b 7d 20 73 70 65 63 69 | 66 69 65 73 20 74 68 65 |{} speci|fies the|
|00002060| 20 73 65 6d 61 6e 74 69 | 63 73 20 6f 66 20 74 68 | semanti|cs of th|
|00002070| 65 20 63 6f 6d 6d 75 6e | 69 63 61 74 69 6f 6e 2e |e commun|ication.|
|00002080| 20 54 68 65 0d 66 6f 6c | 6c 6f 77 69 6e 67 20 74 | The.fol|lowing t|
|00002090| 77 6f 20 74 79 70 65 73 | 20 61 72 65 0d 61 76 61 |wo types| are.ava|
|000020a0| 69 6c 61 62 6c 65 3a 0d | 5c 6d 65 64 73 6b 69 70 |ilable:.|\medskip|
|000020b0| 5c 70 6c 61 69 6e 74 77 | 6f 63 6f 6c 7b 0d 5c 43 |\plaintw|ocol{.\C|
|000020c0| 44 7b 7d 24 5c 5c 7b 53 | 4f 43 4b 5c 5f 53 54 52 |D{}$\\{S|OCK\_STR|
|000020d0| 45 41 4d 7d 24 5c 44 43 | 7b 7d 26 41 20 74 77 6f |EAM}$\DC|{}&A two|
|000020e0| 20 77 61 79 2c 20 72 65 | 6c 69 61 62 6c 65 2c 20 | way, re|liable, |
|000020f0| 63 6f 6e 6e 65 63 74 69 | 6f 6e 20 62 61 73 65 64 |connecti|on based|
|00002100| 20 62 79 74 65 20 73 74 | 72 65 61 6d 2e 25 0d 5c | byte st|ream.%.\|
|00002110| 63 72 0d 5c 43 44 7b 7d | 24 5c 5c 7b 53 4f 43 4b |cr.\CD{}|$\\{SOCK|
|00002120| 5c 5f 44 47 52 41 4d 7d | 24 5c 44 43 7b 7d 26 43 |\_DGRAM}|$\DC{}&C|
|00002130| 6f 6e 6e 65 63 74 69 6f | 6e 6c 65 73 73 2c 20 75 |onnectio|nless, u|
|00002140| 6e 72 65 6c 69 61 62 6c | 65 20 6d 65 73 73 61 67 |nreliabl|e messag|
|00002150| 65 73 20 6f 66 20 61 20 | 66 69 78 65 64 0d 6d 61 |es of a |fixed.ma|
|00002160| 78 69 6d 75 6d 20 6c 65 | 6e 67 74 68 2e 5c 63 72 |ximum le|ngth.\cr|
|00002170| 0d 7d 0d 5c 6d 65 64 73 | 6b 69 70 0d 5c 43 44 7b |.}.\meds|kip.\CD{|
|00002180| 7d 24 5c 5c 7b 70 72 6f | 74 6f 63 6f 6c 7d 24 5c |}$\\{pro|tocol}$\|
|00002190| 44 43 7b 7d 20 77 6f 75 | 6c 64 20 62 65 20 75 73 |DC{} wou|ld be us|
|000021a0| 65 64 20 74 6f 20 73 70 | 65 63 69 66 79 20 61 6e |ed to sp|ecify an|
|000021b0| 20 61 6c 74 65 72 6e 61 | 74 65 20 70 72 6f 74 6f | alterna|te proto|
|000021c0| 63 6f 6c 20 74 6f 20 62 | 65 0d 75 73 65 64 20 77 |col to b|e.used w|
|000021d0| 69 74 68 20 61 20 73 6f | 63 6b 65 74 2e 0d 49 6e |ith a so|cket..In|
|000021e0| 20 5c 2e 7b 47 55 53 49 | 7d 2c 20 68 6f 77 65 76 | \.{GUSI|}, howev|
|000021f0| 65 72 2c 20 74 68 69 73 | 20 70 61 72 61 6d 65 74 |er, this| paramet|
|00002200| 65 72 20 69 73 20 61 6c | 77 61 79 73 20 69 67 6e |er is al|ways ign|
|00002210| 6f 72 65 64 2e 0d 5c 6d | 65 64 73 6b 69 70 0d 45 |ored..\m|edskip.E|
|00002220| 72 72 6f 72 20 63 6f 64 | 65 73 3a 0d 5c 6d 65 64 |rror cod|es:.\med|
|00002230| 73 6b 69 70 5c 70 6c 61 | 69 6e 74 77 6f 63 6f 6c |skip\pla|intwocol|
|00002240| 7b 0d 5c 43 44 7b 7d 24 | 5c 5c 7b 45 49 4e 56 41 |{.\CD{}$|\\{EINVA|
|00002250| 4c 7d 24 5c 44 43 7b 7d | 26 54 68 65 20 5c 43 44 |L}$\DC{}|&The \CD|
|00002260| 7b 7d 24 5c 5c 7b 61 66 | 7d 24 5c 44 43 7b 7d 20 |{}$\\{af|}$\DC{} |
|00002270| 79 6f 75 20 73 70 65 63 | 69 66 69 65 64 20 64 6f |you spec|ified do|
|00002280| 65 73 6e 27 74 20 65 78 | 69 73 74 2e 5c 63 72 0d |esn't ex|ist.\cr.|
|00002290| 5c 43 44 7b 7d 24 5c 5c | 7b 45 4d 46 49 4c 45 7d |\CD{}$\\|{EMFILE}|
|000022a0| 24 5c 44 43 7b 7d 26 54 | 68 65 20 64 65 73 63 72 |$\DC{}&T|he descr|
|000022b0| 69 70 74 6f 72 20 74 61 | 62 6c 65 20 69 73 20 66 |iptor ta|ble is f|
|000022c0| 75 6c 6c 2e 5c 63 72 0d | 7d 0d 0d 5c 66 69 0d 0d |ull.\cr.|}..\fi..|
|000022d0| 5c 4d 31 34 2e 20 5c 43 | 44 7b 7d 24 5c 26 7b 76 |\M14. \C|D{}$\&{v|
|000022e0| 6f 69 64 7d 5c 20 5c 5c | 7b 63 6c 6f 73 65 7d 28 |oid}\ \\|{close}(|
|000022f0| 5c 26 7b 69 6e 74 7d 5c | 20 5c 5c 7b 66 64 7d 29 |\&{int}\| \\{fd})|
|00002300| 24 5c 44 43 7b 7d 20 72 | 65 6d 6f 76 65 73 20 74 |$\DC{} r|emoves t|
|00002310| 68 65 20 61 63 63 65 73 | 73 20 70 61 74 68 0d 61 |he acces|s path.a|
|00002320| 73 73 6f 63 69 61 74 65 | 64 20 77 69 74 68 20 74 |ssociate|d with t|
|00002330| 68 65 20 64 65 73 63 72 | 69 70 74 6f 72 2c 20 61 |he descr|iptor, a|
|00002340| 6e 64 0d 63 6c 6f 73 65 | 73 20 74 68 65 20 66 69 |nd.close|s the fi|
|00002350| 6c 65 20 6f 72 20 73 6f | 63 6b 65 74 20 69 66 20 |le or so|cket if |
|00002360| 74 68 65 20 6c 61 73 74 | 20 61 63 63 65 73 73 20 |the last| access |
|00002370| 70 61 74 68 20 72 65 66 | 65 72 72 69 6e 67 20 74 |path ref|erring t|
|00002380| 6f 20 69 74 20 77 61 73 | 20 72 65 6d 6f 76 65 64 |o it was| removed|
|00002390| 2e 0d 0d 5c 66 69 0d 0d | 5c 4e 31 35 2e 20 32 20 |...\fi..|\N15. 2 |
|000023a0| 50 72 6f 6d 70 74 69 6e | 67 20 74 68 65 20 75 73 |Promptin|g the us|
|000023b0| 65 72 20 66 6f 72 20 61 | 6e 20 61 64 64 72 65 73 |er for a|n addres|
|000023c0| 73 2e 20 54 6f 20 67 69 | 76 65 20 74 68 65 20 75 |s. To gi|ve the u|
|000023d0| 73 65 72 20 74 68 65 20 | 6f 70 70 6f 72 74 75 6e |ser the |opportun|
|000023e0| 69 74 79 20 6f 66 0d 65 | 6e 74 65 72 69 6e 67 0d |ity of.e|ntering.|
|000023f0| 61 6e 20 61 64 64 72 65 | 73 73 20 66 6f 72 20 61 |an addre|ss for a|
|00002400| 20 73 6f 63 6b 65 74 20 | 74 6f 20 62 65 20 62 6f | socket |to be bo|
|00002410| 75 6e 64 20 6f 72 20 63 | 6f 6e 6e 65 63 74 65 64 |und or c|onnected|
|00002420| 20 74 6f 2c 20 74 68 65 | 20 5c 43 44 7b 7d 24 5c | to, the| \CD{}$\|
|00002430| 5c 7b 63 68 6f 6f 73 65 | 7d 28 5c 2c 29 24 25 0d |\{choose|}(\,)$%.|
|00002440| 5c 44 43 7b 7d 20 72 6f | 75 74 69 6e 65 20 77 61 |\DC{} ro|utine wa|
|00002450| 73 0d 69 6e 74 72 6f 64 | 75 63 65 64 20 69 6e 20 |s.introd|uced in |
|00002460| 5c 2e 7b 47 55 53 49 7d | 2e 20 54 68 69 73 20 72 |\.{GUSI}|. This r|
|00002470| 6f 75 74 69 6e 65 20 68 | 61 73 20 6e 6f 20 63 6f |outine h|as no co|
|00002480| 75 6e 74 65 72 70 61 72 | 74 20 69 6e 20 55 4e 49 |unterpar|t in UNI|
|00002490| 58 0d 69 6d 70 6c 65 6d | 65 6e 74 61 74 69 6f 6e |X.implem|entation|
|000024a0| 73 2e 0d 0d 5c 66 69 0d | 0d 5c 4d 31 36 2e 20 5c |s...\fi.|.\M16. \|
|000024b0| 43 44 7b 7d 24 5c 26 7b | 69 6e 74 7d 5c 20 5c 5c |CD{}$\&{|int}\ \\|
|000024c0| 7b 63 68 6f 6f 73 65 7d | 28 5c 26 7b 69 6e 74 7d |{choose}|(\&{int}|
|000024d0| 5c 20 5c 5c 7b 64 6f 6d | 61 69 6e 7d 2c 5c 3b 5c |\ \\{dom|ain},\;\|
|000024e0| 26 7b 69 6e 74 7d 5c 20 | 5c 5c 7b 74 79 70 65 7d |&{int}\ |\\{type}|
|000024f0| 2c 5c 3b 25 0d 5c 26 7b | 63 68 61 72 7d 5c 20 7b |,\;%.\&{|char}\ {|
|00002500| 2a 7d 5c 5c 7b 70 72 6f | 6d 70 74 7d 2c 5c 3b 5c |*}\\{pro|mpt},\;\|
|00002510| 26 7b 76 6f 69 64 7d 5c | 20 7b 2a 7d 5c 5c 7b 63 |&{void}\| {*}\\{c|
|00002520| 6f 6e 73 74 72 61 69 6e | 74 7d 2c 5c 3b 5c 26 7b |onstrain|t},\;\&{|
|00002530| 69 6e 74 7d 5c 20 5c 5c | 7b 66 6c 61 67 73 7d 2c |int}\ \\|{flags},|
|00002540| 5c 3b 25 0d 5c 26 7b 76 | 6f 69 64 7d 5c 20 7b 2a |\;%.\&{v|oid}\ {*|
|00002550| 7d 5c 5c 7b 6e 61 6d 65 | 7d 2c 5c 3b 5c 26 7b 69 |}\\{name|},\;\&{i|
|00002560| 6e 74 7d 5c 20 7b 2a 7d | 5c 5c 7b 6e 6c 65 6e 7d |nt}\ {*}|\\{nlen}|
|00002570| 29 24 5c 44 43 7b 7d 20 | 70 75 74 73 20 75 70 20 |)$\DC{} |puts up |
|00002580| 61 20 6d 6f 64 61 6c 20 | 64 69 61 6c 6f 67 0d 70 |a modal |dialog.p|
|00002590| 72 6f 6d 70 74 69 6e 67 | 20 74 68 65 20 75 73 65 |rompting| the use|
|000025a0| 72 20 74 6f 0d 63 68 6f | 6f 73 65 20 61 6e 20 61 |r to.cho|ose an a|
|000025b0| 64 64 72 65 73 73 2e 20 | 5c 43 44 7b 7d 24 5c 5c |ddress. |\CD{}$\\|
|000025c0| 7b 64 6f 6d 61 69 6e 7d | 24 5c 44 43 7b 7d 20 73 |{domain}|$\DC{} s|
|000025d0| 70 65 63 69 66 69 65 73 | 20 74 68 65 20 63 6f 6d |pecifies| the com|
|000025e0| 6d 75 6e 69 63 61 74 69 | 6f 6e 20 64 6f 6d 61 69 |municati|on domai|
|000025f0| 6e 2c 0d 6c 69 6b 65 20 | 69 6e 20 5c 43 44 7b 7d |n,.like |in \CD{}|
|00002600| 24 5c 5c 7b 73 6f 63 6b | 65 74 7d 24 5c 44 43 7b |$\\{sock|et}$\DC{|
|00002610| 7d 2e 0d 5c 43 44 7b 7d | 24 5c 5c 7b 74 79 70 65 |}..\CD{}|$\\{type|
|00002620| 7d 24 5c 44 43 7b 7d 20 | 6d 61 79 20 62 65 20 75 |}$\DC{} |may be u|
|00002630| 73 65 64 20 62 79 20 66 | 75 74 75 72 65 20 63 6f |sed by f|uture co|
|00002640| 6d 6d 75 6e 69 63 61 74 | 69 6f 6e 20 64 6f 6d 61 |mmunicat|ion doma|
|00002650| 69 6e 73 20 74 6f 20 66 | 75 72 74 68 65 72 0d 64 |ins to f|urther.d|
|00002660| 69 66 66 65 72 65 6e 74 | 69 61 74 65 0d 77 69 74 |ifferent|iate.wit|
|00002670| 68 69 6e 20 61 20 64 6f | 6d 61 69 6e 2c 20 62 75 |hin a do|main, bu|
|00002680| 74 20 69 73 20 69 67 6e | 6f 72 65 64 20 62 79 20 |t is ign|ored by |
|00002690| 63 75 72 72 65 6e 74 20 | 64 6f 6d 61 69 6e 73 2e |current |domains.|
|000026a0| 20 5c 43 44 7b 7d 24 5c | 5c 7b 70 72 6f 6d 70 74 | \CD{}$\|\{prompt|
|000026b0| 7d 24 5c 44 43 7b 7d 20 | 69 73 20 61 0d 6d 65 73 |}$\DC{} |is a.mes|
|000026c0| 73 61 67 65 20 74 68 61 | 74 20 77 69 6c 6c 0d 61 |sage tha|t will.a|
|000026d0| 70 70 65 61 72 20 69 6e | 20 74 68 65 20 64 69 61 |ppear in| the dia|
|000026e0| 6c 6f 67 2e 20 5c 43 44 | 7b 7d 24 5c 5c 7b 63 6f |log. \CD|{}$\\{co|
|000026f0| 6e 73 74 72 61 69 6e 74 | 7d 24 5c 44 43 7b 7d 20 |nstraint|}$\DC{} |
|00002700| 6d 61 79 20 62 65 20 75 | 73 65 64 20 74 6f 20 72 |may be u|sed to r|
|00002710| 65 73 74 72 69 63 74 20 | 74 68 65 0d 74 79 70 65 |estrict |the.type|
|00002720| 73 20 6f 66 20 61 63 63 | 65 70 74 61 62 6c 65 0d |s of acc|eptable.|
|00002730| 61 64 64 72 65 73 73 65 | 73 20 28 46 6f 72 20 6d |addresse|s (For m|
|00002740| 6f 72 65 20 69 6e 66 6f | 72 6d 61 74 69 6f 6e 2c |ore info|rmation,|
|00002750| 20 63 6f 6e 73 75 6c 74 | 20 74 68 65 20 73 65 63 | consult| the sec|
|00002760| 74 69 6f 6e 20 6f 66 20 | 74 68 65 20 63 6f 6d 6d |tion of |the comm|
|00002770| 75 6e 69 63 61 74 69 6f | 6e 0d 64 6f 6d 61 69 6e |unicatio|n.domain|
|00002780| 29 2e 0d 54 68 65 20 66 | 6f 6c 6c 6f 77 69 6e 67 |)..The f|ollowing|
|00002790| 20 74 77 6f 20 5c 43 44 | 7b 7d 24 5c 5c 7b 66 6c | two \CD|{}$\\{fl|
|000027a0| 61 67 73 7d 24 5c 44 43 | 7b 7d 20 61 72 65 20 64 |ags}$\DC|{} are d|
|000027b0| 65 66 69 6e 65 64 20 66 | 6f 72 20 6d 6f 73 74 20 |efined f|or most |
|000027c0| 73 6f 63 6b 65 74 20 74 | 79 70 65 73 3a 0d 5c 6d |socket t|ypes:.\m|
|000027d0| 65 64 73 6b 69 70 5c 70 | 6c 61 69 6e 74 77 6f 63 |edskip\p|laintwoc|
|000027e0| 6f 6c 7b 0d 5c 43 44 7b | 7d 24 5c 5c 7b 43 48 4f |ol{.\CD{|}$\\{CHO|
|000027f0| 4f 53 45 5c 5f 44 45 46 | 41 55 4c 54 7d 24 5c 44 |OSE\_DEF|AULT}$\D|
|00002800| 43 7b 7d 26 4f 66 66 65 | 72 20 74 68 65 20 63 6f |C{}&Offe|r the co|
|00002810| 6e 74 65 6e 74 73 20 70 | 61 73 73 65 64 20 69 6e |ntents p|assed in|
|00002820| 20 5c 43 44 7b 7d 24 5c | 5c 7b 6e 61 6d 65 7d 24 | \CD{}$\|\{name}$|
|00002830| 25 0d 5c 44 43 7b 7d 20 | 61 73 20 74 68 65 20 64 |%.\DC{} |as the d|
|00002840| 65 66 61 75 6c 74 20 63 | 68 6f 69 63 65 2e 5c 63 |efault c|hoice.\c|
|00002850| 72 0d 5c 43 44 7b 7d 24 | 5c 5c 7b 43 48 4f 4f 53 |r.\CD{}$|\\{CHOOS|
|00002860| 45 5c 5f 4e 45 57 7d 24 | 5c 44 43 7b 7d 26 50 72 |E\_NEW}$|\DC{}&Pr|
|00002870| 6f 6d 70 74 20 66 6f 72 | 20 61 20 6e 65 77 20 61 |ompt for| a new a|
|00002880| 64 64 72 65 73 73 2c 20 | 73 75 69 74 61 62 6c 65 |ddress, |suitable|
|00002890| 20 66 6f 72 20 70 61 73 | 73 69 6e 67 20 74 6f 20 | for pas|sing to |
|000028a0| 25 0d 5c 43 44 7b 7d 24 | 5c 5c 7b 62 69 6e 64 7d |%.\CD{}$|\\{bind}|
|000028b0| 28 5c 2c 29 24 5c 44 43 | 7b 7d 2e 20 44 65 66 61 |(\,)$\DC|{}. Defa|
|000028c0| 75 6c 74 0d 69 73 20 70 | 72 6f 6d 70 74 69 6e 67 |ult.is p|rompting|
|000028d0| 20 66 6f 72 20 61 6e 20 | 65 78 69 73 74 69 6e 67 | for an |existing|
|000028e0| 20 61 64 64 72 65 73 73 | 2c 20 74 6f 20 62 65 20 | address|, to be |
|000028f0| 75 73 65 64 20 62 79 20 | 5c 43 44 7b 7d 24 5c 5c |used by |\CD{}$\\|
|00002900| 7b 63 6f 6e 6e 65 63 74 | 7d 28 5c 2c 29 24 25 0d |{connect|}(\,)$%.|
|00002910| 5c 44 43 7b 7d 2e 5c 63 | 72 0d 7d 0d 5c 6d 65 64 |\DC{}.\c|r.}.\med|
|00002920| 73 6b 69 70 0d 5c 43 44 | 7b 7d 24 5c 5c 7b 6e 61 |skip.\CD|{}$\\{na|
|00002930| 6d 65 7d 24 5c 44 43 7b | 7d 20 6f 6e 20 69 6e 70 |me}$\DC{|} on inp|
|00002940| 75 74 20 63 6f 6e 74 61 | 69 6e 73 20 61 20 64 65 |ut conta|ins a de|
|00002950| 66 61 75 6c 74 20 61 64 | 64 72 65 73 73 20 69 66 |fault ad|dress if|
|00002960| 20 5c 43 44 7b 7d 24 5c | 5c 7b 43 48 4f 4f 53 45 | \CD{}$\|\{CHOOSE|
|00002970| 25 0d 5c 5f 44 45 46 41 | 55 4c 54 7d 24 5c 44 43 |%.\_DEFA|ULT}$\DC|
|00002980| 7b 7d 20 69 73 20 73 65 | 74 2e 20 4f 6e 20 6f 75 |{} is se|t. On ou|
|00002990| 74 70 75 74 2c 20 69 74 | 0d 69 73 20 73 65 74 20 |tput, it|.is set |
|000029a0| 74 6f 20 74 68 65 20 61 | 64 64 72 65 73 73 20 63 |to the a|ddress c|
|000029b0| 68 6f 73 65 6e 2e 0d 5c | 6d 65 64 73 6b 69 70 0d |hosen..\|medskip.|
|000029c0| 45 72 72 6f 72 20 63 6f | 64 65 73 3a 0d 5c 6d 65 |Error co|des:.\me|
|000029d0| 64 73 6b 69 70 5c 70 6c | 61 69 6e 74 77 6f 63 6f |dskip\pl|aintwoco|
|000029e0| 6c 7b 0d 5c 43 44 7b 7d | 24 5c 5c 7b 45 49 4e 56 |l{.\CD{}|$\\{EINV|
|000029f0| 41 4c 7d 24 5c 44 43 7b | 7d 26 4f 6e 65 20 6f 66 |AL}$\DC{|}&One of|
|00002a00| 20 74 68 65 20 5c 43 44 | 7b 7d 24 5c 5c 7b 66 6c | the \CD|{}$\\{fl|
|00002a10| 61 67 73 7d 24 5c 44 43 | 7b 7d 20 69 73 20 6e 6f |ags}$\DC|{} is no|
|00002a20| 74 20 28 79 65 74 29 20 | 73 75 70 70 6f 72 74 65 |t (yet) |supporte|
|00002a30| 64 0d 62 79 20 74 68 69 | 73 20 63 6f 6d 6d 75 6e |d.by thi|s commun|
|00002a40| 69 63 61 74 69 6f 6e 73 | 0d 64 6f 6d 61 69 6e 2e |ications|.domain.|
|00002a50| 20 54 68 69 73 20 65 72 | 72 6f 72 20 69 73 20 6e | This er|ror is n|
|00002a60| 65 76 65 72 20 72 65 70 | 6f 72 74 65 64 20 66 6f |ever rep|orted fo|
|00002a70| 72 20 5c 43 44 7b 7d 24 | 5c 5c 7b 43 48 4f 4f 53 |r \CD{}$|\\{CHOOS|
|00002a80| 45 5c 5f 44 45 46 41 55 | 4c 54 7d 24 5c 44 43 7b |E\_DEFAU|LT}$\DC{|
|00002a90| 7d 2c 20 77 68 69 63 68 | 0d 6d 69 67 68 74 20 67 |}, which|.might g|
|00002aa0| 65 74 20 73 69 6c 65 6e | 74 6c 79 0d 69 67 6e 6f |et silen|tly.igno|
|00002ab0| 72 65 64 2e 5c 63 72 0d | 5c 43 44 7b 7d 24 5c 5c |red.\cr.|\CD{}$\\|
|00002ac0| 7b 45 49 4e 54 52 7d 24 | 5c 44 43 7b 7d 26 54 68 |{EINTR}$|\DC{}&Th|
|00002ad0| 65 20 75 73 65 72 20 63 | 68 6f 73 65 20 60 60 43 |e user c|hose ``C|
|00002ae0| 61 6e 63 65 6c 27 27 20 | 69 6e 20 74 68 65 20 64 |ancel'' |in the d|
|00002af0| 69 61 6c 6f 67 2e 5c 63 | 72 0d 7d 0d 0d 5c 66 69 |ialog.\c|r.}..\fi|
|00002b00| 0d 0d 5c 4e 31 37 2e 20 | 32 20 45 73 74 61 62 6c |..\N17. |2 Establ|
|00002b10| 69 73 68 69 6e 67 20 63 | 6f 6e 6e 65 63 74 69 6f |ishing c|onnectio|
|00002b20| 6e 73 20 62 65 74 77 65 | 65 6e 20 73 6f 63 6b 65 |ns betwe|en socke|
|00002b30| 74 73 2e 20 42 65 66 6f | 72 65 20 79 6f 75 20 63 |ts. Befo|re you c|
|00002b40| 61 6e 20 74 72 61 6e 73 | 6d 69 74 20 64 61 74 61 |an trans|mit data|
|00002b50| 0d 6f 6e 20 61 0d 73 74 | 72 65 61 6d 20 73 6f 63 |.on a.st|ream soc|
|00002b60| 6b 65 74 2c 20 69 74 20 | 6d 75 73 74 20 62 65 20 |ket, it |must be |
|00002b70| 63 6f 6e 6e 65 63 74 65 | 64 20 74 6f 20 61 20 70 |connecte|d to a p|
|00002b80| 65 65 72 20 73 6f 63 6b | 65 74 2e 20 43 6f 6e 6e |eer sock|et. Conn|
|00002b90| 65 63 74 69 6f 6e 20 65 | 73 74 61 62 6c 69 73 68 |ection e|stablish|
|00002ba0| 6d 65 6e 74 0d 69 73 0d | 61 73 79 6d 6d 65 74 72 |ment.is.|asymmetr|
|00002bb0| 69 63 61 6c 3a 20 54 68 | 65 20 73 65 72 76 65 72 |ical: Th|e server|
|00002bc0| 20 73 6f 63 6b 65 74 20 | 72 65 67 69 73 74 65 72 | socket |register|
|00002bd0| 73 20 69 74 73 20 61 64 | 64 72 65 73 73 20 77 69 |s its ad|dress wi|
|00002be0| 74 68 20 5c 43 44 7b 7d | 24 5c 5c 7b 62 69 6e 64 |th \CD{}|$\\{bind|
|00002bf0| 7d 28 5c 2c 29 24 25 0d | 5c 44 43 7b 7d 2c 20 63 |}(\,)$%.|\DC{}, c|
|00002c00| 61 6c 6c 73 20 5c 43 44 | 7b 7d 24 5c 5c 7b 6c 69 |alls \CD|{}$\\{li|
|00002c10| 73 74 65 6e 7d 28 5c 2c | 29 24 5c 44 43 7b 7d 0d |sten}(\,|)$\DC{}.|
|00002c20| 74 6f 20 69 6e 64 69 63 | 61 74 65 20 69 74 73 20 |to indic|ate its |
|00002c30| 77 69 6c 6c 69 6e 67 6e | 65 73 73 20 74 6f 20 61 |willingn|ess to a|
|00002c40| 63 63 65 70 74 20 63 6f | 6e 6e 65 63 74 69 6f 6e |ccept co|nnection|
|00002c50| 73 20 61 6e 64 20 61 63 | 63 65 70 74 73 20 74 68 |s and ac|cepts th|
|00002c60| 65 6d 20 62 79 20 63 61 | 6c 6c 69 6e 67 0d 5c 43 |em by ca|lling.\C|
|00002c70| 44 7b 7d 24 5c 5c 7b 61 | 63 63 65 70 74 7d 28 5c |D{}$\\{a|ccept}(\|
|00002c80| 2c 29 24 5c 44 43 7b 7d | 2e 20 54 68 65 20 63 6c |,)$\DC{}|. The cl|
|00002c90| 69 65 6e 74 20 73 6f 63 | 6b 65 74 2c 20 61 66 74 |ient soc|ket, aft|
|00002ca0| 65 72 20 70 6f 73 73 69 | 62 6c 79 20 68 61 76 69 |er possi|bly havi|
|00002cb0| 6e 67 20 72 65 67 69 73 | 74 65 72 65 64 0d 69 74 |ng regis|tered.it|
|00002cc0| 73 20 61 64 64 72 65 73 | 73 20 77 69 74 68 0d 5c |s addres|s with.\|
|00002cd0| 43 44 7b 7d 24 5c 5c 7b | 62 69 6e 64 7d 28 5c 2c |CD{}$\\{|bind}(\,|
|00002ce0| 29 24 5c 44 43 7b 7d 20 | 28 54 68 69 73 20 69 73 |)$\DC{} |(This is|
|00002cf0| 20 6e 6f 74 20 6e 65 63 | 65 73 73 61 72 79 20 66 | not nec|essary f|
|00002d00| 6f 72 20 61 6c 6c 20 73 | 6f 63 6b 65 74 20 66 61 |or all s|ocket fa|
|00002d10| 6d 69 6c 69 65 73 20 61 | 73 20 73 6f 6d 65 0d 77 |milies a|s some.w|
|00002d20| 69 6c 6c 20 61 75 74 6f | 6d 61 74 69 63 61 6c 6c |ill auto|maticall|
|00002d30| 79 0d 61 73 73 69 67 6e | 20 61 6e 20 61 64 64 72 |y.assign| an addr|
|00002d40| 65 73 73 29 20 63 61 6c | 6c 73 20 5c 43 44 7b 7d |ess) cal|ls \CD{}|
|00002d50| 24 5c 5c 7b 63 6f 6e 6e | 65 63 74 7d 28 5c 2c 29 |$\\{conn|ect}(\,)|
|00002d60| 24 5c 44 43 7b 7d 20 74 | 6f 20 65 73 74 61 62 6c |$\DC{} t|o establ|
|00002d70| 69 73 68 20 61 20 63 6f | 6e 6e 65 63 74 69 6f 6e |ish a co|nnection|
|00002d80| 0d 77 69 74 68 20 61 20 | 73 65 72 76 65 72 2e 0d |.with a |server..|
|00002d90| 0d 49 74 20 69 73 20 70 | 6f 73 73 69 62 6c 65 2c |.It is p|ossible,|
|00002da0| 20 62 75 74 20 6e 6f 74 | 20 72 65 71 75 69 72 65 | but not| require|
|00002db0| 64 2c 20 74 6f 20 63 61 | 6c 6c 20 5c 43 44 7b 7d |d, to ca|ll \CD{}|
|00002dc0| 24 5c 5c 7b 63 6f 6e 6e | 65 63 74 7d 28 5c 2c 29 |$\\{conn|ect}(\,)|
|00002dd0| 24 5c 44 43 7b 7d 20 66 | 6f 72 0d 64 61 74 61 67 |$\DC{} f|or.datag|
|00002de0| 72 61 6d 20 73 6f 63 6b | 65 74 73 2e 0d 0d 5c 66 |ram sock|ets...\f|
|00002df0| 69 0d 0d 5c 4d 31 38 2e | 20 5c 43 44 7b 7d 24 5c |i..\M18.| \CD{}$\|
|00002e00| 26 7b 69 6e 74 7d 5c 20 | 5c 5c 7b 62 69 6e 64 7d |&{int}\ |\\{bind}|
|00002e10| 28 5c 26 7b 69 6e 74 7d | 5c 20 5c 7c 73 2c 5c 3b |(\&{int}|\ \|s,\;|
|00002e20| 5c 26 7b 76 6f 69 64 7d | 5c 20 7b 2a 7d 5c 5c 7b |\&{void}|\ {*}\\{|
|00002e30| 6e 61 6d 65 7d 2c 5c 3b | 5c 26 7b 69 6e 74 7d 5c |name},\;|\&{int}\|
|00002e40| 20 25 0d 5c 5c 7b 6e 61 | 6d 65 6c 65 6e 7d 29 24 | %.\\{na|melen})$|
|00002e50| 5c 44 43 7b 7d 20 62 69 | 6e 64 73 20 61 20 73 6f |\DC{} bi|nds a so|
|00002e60| 63 6b 65 74 20 74 6f 20 | 69 74 73 20 61 64 64 72 |cket to |its addr|
|00002e70| 65 73 73 2e 20 54 68 65 | 0d 66 6f 72 6d 61 74 20 |ess. The|.format |
|00002e80| 6f 66 20 74 68 65 20 61 | 64 64 72 65 73 73 20 69 |of the a|ddress i|
|00002e90| 73 20 64 69 66 66 65 72 | 65 6e 74 20 66 6f 72 20 |s differ|ent for |
|00002ea0| 65 76 65 72 79 20 73 6f | 63 6b 65 74 20 66 61 6d |every so|cket fam|
|00002eb0| 69 6c 79 2e 20 46 6f 72 | 20 73 6f 6d 65 20 66 61 |ily. For| some fa|
|00002ec0| 6d 69 6c 69 65 73 2c 0d | 79 6f 75 0d 6d 61 79 20 |milies,.|you.may |
|00002ed0| 61 73 6b 20 74 68 65 20 | 75 73 65 72 20 66 6f 72 |ask the |user for|
|00002ee0| 20 61 6e 20 61 64 64 72 | 65 73 73 20 62 79 20 63 | an addr|ess by c|
|00002ef0| 61 6c 6c 69 6e 67 20 5c | 43 44 7b 7d 24 5c 5c 7b |alling \|CD{}$\\{|
|00002f00| 63 68 6f 6f 73 65 7d 28 | 5c 2c 29 24 5c 44 43 7b |choose}(|\,)$\DC{|
|00002f10| 7d 2e 0d 5c 6d 65 64 73 | 6b 69 70 0d 45 72 72 6f |}..\meds|kip.Erro|
|00002f20| 72 20 63 6f 64 65 73 3a | 0d 5c 6d 65 64 73 6b 69 |r codes:|.\medski|
|00002f30| 70 5c 70 6c 61 69 6e 74 | 77 6f 63 6f 6c 7b 0d 5c |p\plaint|wocol{.\|
|00002f40| 43 44 7b 7d 24 5c 5c 7b | 45 41 46 4e 4f 53 55 50 |CD{}$\\{|EAFNOSUP|
|00002f50| 50 4f 52 54 7d 24 5c 44 | 43 7b 7d 26 5c 43 44 7b |PORT}$\D|C{}&\CD{|
|00002f60| 7d 24 5c 5c 7b 6e 61 6d | 65 7d 24 5c 44 43 7b 7d |}$\\{nam|e}$\DC{}|
|00002f70| 20 73 70 65 63 69 66 69 | 65 73 20 61 6e 20 69 6c | specifi|es an il|
|00002f80| 6c 65 67 61 6c 20 61 64 | 64 72 65 73 73 0d 66 61 |legal ad|dress.fa|
|00002f90| 6d 69 6c 79 20 66 6f 72 | 20 74 68 69 73 20 73 6f |mily for| this so|
|00002fa0| 63 6b 65 74 2e 5c 63 72 | 0d 5c 43 44 7b 7d 24 5c |cket.\cr|.\CD{}$\|
|00002fb0| 5c 7b 45 41 44 44 52 49 | 4e 55 53 45 7d 24 5c 44 |\{EADDRI|NUSE}$\D|
|00002fc0| 43 7b 7d 26 54 68 65 72 | 65 20 69 73 20 61 6c 72 |C{}&Ther|e is alr|
|00002fd0| 65 61 64 79 20 61 6e 6f | 74 68 65 72 20 73 6f 63 |eady ano|ther soc|
|00002fe0| 6b 65 74 20 77 69 74 68 | 20 74 68 69 73 20 61 64 |ket with| this ad|
|00002ff0| 64 72 65 73 73 2e 25 0d | 5c 63 72 0d 7d 0d 0d 5c |dress.%.|\cr.}..\|
|00003000| 66 69 0d 0d 5c 4d 31 39 | 2e 20 5c 43 44 7b 7d 24 |fi..\M19|. \CD{}$|
|00003010| 5c 26 7b 69 6e 74 7d 5c | 20 5c 5c 7b 6c 69 73 74 |\&{int}\| \\{list|
|00003020| 65 6e 7d 28 5c 26 7b 69 | 6e 74 7d 5c 20 5c 7c 73 |en}(\&{i|nt}\ \|s|
|00003030| 2c 5c 3b 5c 26 7b 69 6e | 74 7d 5c 20 5c 5c 7b 71 |,\;\&{in|t}\ \\{q|
|00003040| 6c 65 6e 7d 29 24 5c 44 | 43 7b 7d 20 74 75 72 6e |len})$\D|C{} turn|
|00003050| 73 20 61 0d 73 6f 63 6b | 65 74 20 69 6e 74 6f 20 |s a.sock|et into |
|00003060| 61 20 6c 69 73 74 65 6e | 65 72 2e 20 5c 43 44 7b |a listen|er. \CD{|
|00003070| 7d 24 5c 5c 7b 71 6c 65 | 6e 7d 24 5c 44 43 7b 7d |}$\\{qle|n}$\DC{}|
|00003080| 20 64 65 74 65 72 6d 69 | 6e 65 73 0d 68 6f 77 20 | determi|nes.how |
|00003090| 6d 61 6e 79 20 73 6f 63 | 6b 65 74 73 20 63 61 6e |many soc|kets can|
|000030a0| 20 63 6f 6e 63 75 72 72 | 65 6e 74 6c 79 20 77 61 | concurr|ently wa|
|000030b0| 69 74 20 66 6f 72 20 61 | 20 63 6f 6e 6e 65 63 74 |it for a| connect|
|000030c0| 69 6f 6e 2c 20 62 75 74 | 20 69 73 20 69 67 6e 6f |ion, but| is igno|
|000030d0| 72 65 64 20 66 6f 72 0d | 61 6c 6d 6f 73 74 0d 61 |red for.|almost.a|
|000030e0| 6c 6c 20 73 6f 63 6b 65 | 74 20 66 61 6d 69 6c 69 |ll socke|t famili|
|000030f0| 65 73 2e 0d 0d 5c 66 69 | 0d 0d 5c 4d 32 30 2e 20 |es...\fi|..\M20. |
|00003100| 5c 43 44 7b 7d 24 5c 26 | 7b 69 6e 74 7d 5c 20 5c |\CD{}$\&|{int}\ \|
|00003110| 5c 7b 61 63 63 65 70 74 | 7d 28 5c 26 7b 69 6e 74 |\{accept|}(\&{int|
|00003120| 7d 5c 20 5c 7c 73 2c 5c | 3b 5c 26 7b 76 6f 69 64 |}\ \|s,\|;\&{void|
|00003130| 7d 5c 20 7b 2a 7d 5c 5c | 7b 61 64 64 72 7d 2c 5c |}\ {*}\\|{addr},\|
|00003140| 3b 5c 26 7b 69 6e 74 7d | 5c 0d 7b 2a 7d 5c 5c 7b |;\&{int}|\.{*}\\{|
|00003150| 61 64 64 72 6c 65 6e 7d | 29 24 5c 44 43 7b 7d 20 |addrlen}|)$\DC{} |
|00003160| 61 63 63 65 70 74 73 20 | 61 20 63 6f 6e 6e 65 63 |accepts |a connec|
|00003170| 74 69 6f 6e 20 66 6f 72 | 20 61 20 73 6f 63 6b 65 |tion for| a socke|
|00003180| 74 0d 7b 5c 69 74 20 6f | 6e 20 61 20 6e 65 77 20 |t.{\it o|n a new |
|00003190| 73 6f 63 6b 65 74 7d 20 | 61 6e 64 20 72 65 74 75 |socket} |and retu|
|000031a0| 72 6e 73 20 74 68 65 20 | 64 65 73 63 72 69 70 74 |rns the |descript|
|000031b0| 6f 72 20 6f 66 20 74 68 | 65 20 6e 65 77 20 73 6f |or of th|e new so|
|000031c0| 63 6b 65 74 2e 20 49 66 | 20 5c 43 44 7b 7d 24 25 |cket. If| \CD{}$%|
|000031d0| 0d 5c 5c 7b 61 64 64 72 | 7d 24 5c 44 43 7b 7d 20 |.\\{addr|}$\DC{} |
|000031e0| 69 73 20 6e 6f 74 0d 5c | 43 44 7b 7d 24 5c 5c 7b |is not.\|CD{}$\\{|
|000031f0| 4e 55 4c 4c 7d 24 5c 44 | 43 7b 7d 2c 20 74 68 65 |NULL}$\D|C{}, the|
|00003200| 20 61 64 64 72 65 73 73 | 20 6f 66 20 74 68 65 20 | address| of the |
|00003210| 63 6f 6e 6e 65 63 74 69 | 6e 67 20 73 6f 63 6b 65 |connecti|ng socke|
|00003220| 74 20 77 69 6c 6c 20 62 | 65 20 61 73 73 69 67 6e |t will b|e assign|
|00003230| 65 64 20 74 6f 0d 69 74 | 2e 0d 0d 59 6f 75 20 63 |ed to.it|...You c|
|00003240| 61 6e 20 66 69 6e 64 20 | 6f 75 74 20 69 66 20 61 |an find |out if a|
|00003250| 20 63 6f 6e 6e 65 63 74 | 69 6f 6e 20 69 73 20 70 | connect|ion is p|
|00003260| 65 6e 64 69 6e 67 20 62 | 79 20 63 61 6c 6c 69 6e |ending b|y callin|
|00003270| 67 20 5c 43 44 7b 7d 24 | 5c 5c 7b 73 65 6c 65 63 |g \CD{}$|\\{selec|
|00003280| 74 7d 28 5c 2c 29 24 25 | 0d 5c 44 43 7b 7d 20 74 |t}(\,)$%|.\DC{} t|
|00003290| 6f 20 66 69 6e 64 20 6f | 75 74 20 69 66 0d 74 68 |o find o|ut if.th|
|000032a0| 65 20 73 6f 63 6b 65 74 | 20 69 73 20 72 65 61 64 |e socket| is read|
|000032b0| 79 20 66 6f 72 20 7b 5c | 69 74 20 72 65 61 64 69 |y for {\|it readi|
|000032c0| 6e 67 7d 2e 0d 5c 6d 65 | 64 73 6b 69 70 0d 45 72 |ng}..\me|dskip.Er|
|000032d0| 72 6f 72 20 63 6f 64 65 | 73 3a 0d 5c 6d 65 64 73 |ror code|s:.\meds|
|000032e0| 6b 69 70 5c 70 6c 61 69 | 6e 74 77 6f 63 6f 6c 7b |kip\plai|ntwocol{|
|000032f0| 0d 5c 43 44 7b 7d 24 5c | 5c 7b 45 4e 4f 54 43 4f |.\CD{}$\|\{ENOTCO|
|00003300| 4e 4e 7d 24 5c 44 43 7b | 7d 26 59 6f 75 20 64 69 |NN}$\DC{|}&You di|
|00003310| 64 20 6e 6f 74 20 63 61 | 6c 6c 20 5c 43 44 7b 7d |d not ca|ll \CD{}|
|00003320| 24 5c 5c 7b 6c 69 73 74 | 65 6e 7d 28 5c 2c 29 24 |$\\{list|en}(\,)$|
|00003330| 5c 44 43 7b 7d 20 66 6f | 72 20 74 68 69 73 0d 73 |\DC{} fo|r this.s|
|00003340| 6f 63 6b 65 74 2e 5c 63 | 72 0d 5c 43 44 7b 7d 24 |ocket.\c|r.\CD{}$|
|00003350| 5c 5c 7b 45 57 4f 55 4c | 44 42 4c 4f 43 4b 7d 24 |\\{EWOUL|DBLOCK}$|
|00003360| 5c 44 43 7b 7d 26 54 68 | 65 20 73 6f 63 6b 65 74 |\DC{}&Th|e socket|
|00003370| 20 69 73 20 6e 6f 6e 62 | 6c 6f 63 6b 69 6e 67 20 | is nonb|locking |
|00003380| 61 6e 64 20 6e 6f 20 73 | 6f 63 6b 65 74 20 69 73 |and no s|ocket is|
|00003390| 20 74 72 79 69 6e 67 0d | 74 6f 20 63 6f 6e 6e 65 | trying.|to conne|
|000033a0| 63 74 2e 5c 63 72 0d 7d | 0d 0d 5c 66 69 0d 0d 5c |ct.\cr.}|..\fi..\|
|000033b0| 4d 32 31 2e 20 5c 43 44 | 7b 7d 24 5c 26 7b 69 6e |M21. \CD|{}$\&{in|
|000033c0| 74 7d 5c 20 5c 5c 7b 63 | 6f 6e 6e 65 63 74 7d 28 |t}\ \\{c|onnect}(|
|000033d0| 5c 26 7b 69 6e 74 7d 5c | 20 5c 7c 73 2c 5c 3b 5c |\&{int}\| \|s,\;\|
|000033e0| 26 7b 76 6f 69 64 7d 5c | 20 7b 2a 7d 5c 5c 7b 61 |&{void}\| {*}\\{a|
|000033f0| 64 64 72 7d 2c 5c 3b 5c | 26 7b 69 6e 74 7d 25 0d |ddr},\;\|&{int}%.|
|00003400| 5c 20 5c 5c 7b 61 64 64 | 72 6c 65 6e 7d 29 24 5c |\ \\{add|rlen})$\|
|00003410| 44 43 7b 7d 20 74 72 69 | 65 73 20 74 6f 20 63 6f |DC{} tri|es to co|
|00003420| 6e 6e 65 63 74 20 74 6f | 20 74 68 65 20 73 6f 63 |nnect to| the soc|
|00003430| 6b 65 74 20 77 68 6f 73 | 65 0d 61 64 64 72 65 73 |ket whos|e.addres|
|00003440| 73 20 69 73 20 69 6e 20 | 5c 43 44 7b 7d 24 5c 5c |s is in |\CD{}$\\|
|00003450| 7b 61 64 64 72 7d 24 5c | 44 43 7b 7d 2e 20 49 66 |{addr}$\|DC{}. If|
|00003460| 20 74 68 65 20 73 6f 63 | 6b 65 74 20 69 73 20 6e | the soc|ket is n|
|00003470| 6f 6e 62 6c 6f 63 6b 69 | 6e 67 20 61 6e 64 20 74 |onblocki|ng and t|
|00003480| 68 65 0d 63 6f 6e 6e 65 | 63 74 69 6f 6e 20 63 61 |he.conne|ction ca|
|00003490| 6e 6e 6f 74 20 62 65 0d | 6d 61 64 65 20 69 6d 6d |nnot be.|made imm|
|000034a0| 65 64 69 61 74 65 6c 79 | 2c 20 5c 43 44 7b 7d 24 |ediately|, \CD{}$|
|000034b0| 5c 5c 7b 63 6f 6e 6e 65 | 63 74 7d 28 5c 2c 29 24 |\\{conne|ct}(\,)$|
|000034c0| 5c 44 43 7b 7d 20 72 65 | 74 75 72 6e 73 20 5c 43 |\DC{} re|turns \C|
|000034d0| 44 7b 7d 24 5c 5c 7b 45 | 49 4e 50 52 4f 47 52 45 |D{}$\\{E|INPROGRE|
|000034e0| 53 53 7d 24 25 0d 5c 44 | 43 7b 7d 2e 20 59 6f 75 |SS}$%.\D|C{}. You|
|000034f0| 20 63 61 6e 20 66 69 6e | 64 20 6f 75 74 20 69 66 | can fin|d out if|
|00003500| 20 74 68 65 0d 63 6f 6e | 6e 65 63 74 69 6f 6e 20 | the.con|nection |
|00003510| 68 61 73 20 62 65 65 6e | 20 65 73 74 61 62 6c 69 |has been| establi|
|00003520| 73 68 65 64 20 62 79 20 | 63 61 6c 6c 69 6e 67 20 |shed by |calling |
|00003530| 5c 43 44 7b 7d 24 5c 5c | 7b 73 65 6c 65 63 74 7d |\CD{}$\\|{select}|
|00003540| 28 5c 2c 29 24 5c 44 43 | 7b 7d 20 74 6f 20 66 69 |(\,)$\DC|{} to fi|
|00003550| 6e 64 0d 6f 75 74 20 69 | 66 0d 74 68 65 20 73 6f |nd.out i|f.the so|
|00003560| 63 6b 65 74 20 69 73 20 | 72 65 61 64 79 20 66 6f |cket is |ready fo|
|00003570| 72 20 7b 5c 69 74 20 77 | 72 69 74 69 6e 67 7d 2e |r {\it w|riting}.|
|00003580| 0d 5c 6d 65 64 73 6b 69 | 70 0d 45 72 72 6f 72 20 |.\medski|p.Error |
|00003590| 63 6f 64 65 73 3a 0d 5c | 6d 65 64 73 6b 69 70 5c |codes:.\|medskip\|
|000035a0| 70 6c 61 69 6e 74 77 6f | 63 6f 6c 7b 0d 5c 43 44 |plaintwo|col{.\CD|
|000035b0| 7b 7d 24 5c 5c 7b 45 41 | 46 4e 4f 53 55 50 50 4f |{}$\\{EA|FNOSUPPO|
|000035c0| 52 54 7d 24 5c 44 43 7b | 7d 26 5c 43 44 7b 7d 24 |RT}$\DC{|}&\CD{}$|
|000035d0| 5c 5c 7b 6e 61 6d 65 7d | 24 5c 44 43 7b 7d 20 73 |\\{name}|$\DC{} s|
|000035e0| 70 65 63 69 66 69 65 73 | 20 61 6e 20 69 6c 6c 65 |pecifies| an ille|
|000035f0| 67 61 6c 20 61 64 64 72 | 65 73 73 0d 66 61 6d 69 |gal addr|ess.fami|
|00003600| 6c 79 20 66 6f 72 20 74 | 68 69 73 20 73 6f 63 6b |ly for t|his sock|
|00003610| 65 74 2e 5c 63 72 0d 5c | 43 44 7b 7d 24 5c 5c 7b |et.\cr.\|CD{}$\\{|
|00003620| 45 49 53 43 4f 4e 4e 7d | 24 5c 44 43 7b 7d 26 54 |EISCONN}|$\DC{}&T|
|00003630| 68 65 20 73 6f 63 6b 65 | 74 20 69 73 20 61 6c 72 |he socke|t is alr|
|00003640| 65 61 64 79 20 63 6f 6e | 6e 65 63 74 65 64 2e 5c |eady con|nected.\|
|00003650| 63 72 0d 5c 43 44 7b 7d | 24 5c 5c 7b 45 41 44 44 |cr.\CD{}|$\\{EADD|
|00003660| 52 4e 4f 41 56 41 49 4c | 7d 24 5c 44 43 7b 7d 26 |RNOAVAIL|}$\DC{}&|
|00003670| 54 68 65 72 65 20 69 73 | 20 6e 6f 20 73 6f 63 6b |There is| no sock|
|00003680| 65 74 20 77 69 74 68 20 | 74 68 65 20 67 69 76 65 |et with |the give|
|00003690| 6e 20 61 64 64 72 65 73 | 73 2e 5c 63 72 0d 5c 43 |n addres|s.\cr.\C|
|000036a0| 44 7b 7d 24 5c 5c 7b 45 | 43 4f 4e 4e 52 45 46 55 |D{}$\\{E|CONNREFU|
|000036b0| 53 45 44 7d 24 5c 44 43 | 7b 7d 26 54 68 65 20 73 |SED}$\DC|{}&The s|
|000036c0| 6f 63 6b 65 74 20 72 65 | 66 75 73 65 64 20 74 68 |ocket re|fused th|
|000036d0| 65 20 63 6f 6e 6e 65 63 | 74 69 6f 6e 2e 5c 63 72 |e connec|tion.\cr|
|000036e0| 0d 5c 43 44 7b 7d 24 5c | 5c 7b 45 49 4e 50 52 4f |.\CD{}$\|\{EINPRO|
|000036f0| 47 52 45 53 53 7d 24 5c | 44 43 7b 7d 26 54 68 65 |GRESS}$\|DC{}&The|
|00003700| 20 73 6f 63 6b 65 74 20 | 69 73 20 6e 6f 6e 62 6c | socket |is nonbl|
|00003710| 6f 63 6b 69 6e 67 20 61 | 6e 64 20 74 68 65 20 63 |ocking a|nd the c|
|00003720| 6f 6e 6e 65 63 74 69 6f | 6e 20 69 73 0d 62 65 69 |onnectio|n is.bei|
|00003730| 6e 67 20 65 73 74 61 62 | 6c 69 73 68 65 64 2e 5c |ng estab|lished.\|
|00003740| 63 72 0d 7d 0d 0d 5c 66 | 69 0d 0d 5c 4e 32 32 2e |cr.}..\f|i..\N22.|
|00003750| 20 32 20 54 72 61 6e 73 | 6d 69 74 74 69 6e 67 20 | 2 Trans|mitting |
|00003760| 64 61 74 61 20 62 65 74 | 77 65 65 6e 20 73 6f 63 |data bet|ween soc|
|00003770| 6b 65 74 73 2e 20 59 6f | 75 20 63 61 6e 20 77 72 |kets. Yo|u can wr|
|00003780| 69 74 65 20 64 61 74 61 | 20 74 6f 20 61 20 73 6f |ite data| to a so|
|00003790| 63 6b 65 74 20 75 73 69 | 6e 67 0d 5c 43 44 7b 7d |cket usi|ng.\CD{}|
|000037a0| 24 5c 5c 7b 77 72 69 74 | 65 7d 28 5c 2c 29 24 5c |$\\{writ|e}(\,)$\|
|000037b0| 44 43 7b 7d 2c 0d 5c 43 | 44 7b 7d 24 5c 5c 7b 77 |DC{},.\C|D{}$\\{w|
|000037c0| 72 69 74 65 76 7d 28 5c | 2c 29 24 5c 44 43 7b 7d |ritev}(\|,)$\DC{}|
|000037d0| 2c 20 5c 43 44 7b 7d 24 | 5c 5c 7b 73 65 6e 64 7d |, \CD{}$|\\{send}|
|000037e0| 28 5c 2c 29 24 5c 44 43 | 7b 7d 2c 20 5c 43 44 7b |(\,)$\DC|{}, \CD{|
|000037f0| 7d 24 5c 5c 7b 73 65 6e | 64 74 6f 7d 28 5c 2c 29 |}$\\{sen|dto}(\,)|
|00003800| 24 25 0d 5c 44 43 7b 7d | 2c 20 6f 72 20 5c 43 44 |$%.\DC{}|, or \CD|
|00003810| 7b 7d 24 5c 5c 7b 73 65 | 6e 64 6d 73 67 7d 28 5c |{}$\\{se|ndmsg}(\|
|00003820| 2c 29 24 5c 44 43 7b 7d | 2e 20 59 6f 75 20 63 61 |,)$\DC{}|. You ca|
|00003830| 6e 20 72 65 61 64 20 64 | 61 74 61 20 66 72 6f 6d |n read d|ata from|
|00003840| 20 61 20 73 6f 63 6b 65 | 74 0d 75 73 69 6e 67 20 | a socke|t.using |
|00003850| 5c 43 44 7b 7d 24 5c 5c | 7b 72 65 61 64 7d 28 5c |\CD{}$\\|{read}(\|
|00003860| 2c 29 24 5c 44 43 7b 7d | 2c 20 5c 43 44 7b 7d 24 |,)$\DC{}|, \CD{}$|
|00003870| 5c 5c 7b 72 65 61 64 76 | 7d 28 5c 2c 29 24 5c 44 |\\{readv|}(\,)$\D|
|00003880| 43 7b 7d 2c 20 5c 43 44 | 7b 7d 24 5c 5c 7b 72 65 |C{}, \CD|{}$\\{re|
|00003890| 63 76 7d 28 5c 2c 29 24 | 25 0d 5c 44 43 7b 7d 2c |cv}(\,)$|%.\DC{},|
|000038a0| 20 5c 43 44 7b 7d 24 5c | 5c 7b 72 65 63 76 66 72 | \CD{}$\|\{recvfr|
|000038b0| 6f 6d 7d 28 5c 2c 29 24 | 5c 44 43 7b 7d 2c 20 6f |om}(\,)$|\DC{}, o|
|000038c0| 72 20 5c 43 44 7b 7d 24 | 5c 5c 7b 72 65 63 76 6d |r \CD{}$|\\{recvm|
|000038d0| 73 67 7d 28 5c 2c 29 24 | 5c 44 43 7b 7d 2e 0d 0d |sg}(\,)$|\DC{}...|
|000038e0| 5c 66 69 0d 0d 5c 4d 32 | 33 2e 20 5c 43 44 7b 7d |\fi..\M2|3. \CD{}|
|000038f0| 24 5c 26 7b 69 6e 74 7d | 5c 20 5c 5c 7b 72 65 61 |$\&{int}|\ \\{rea|
|00003900| 64 7d 28 5c 26 7b 69 6e | 74 7d 5c 20 5c 7c 73 2c |d}(\&{in|t}\ \|s,|
|00003910| 5c 3b 5c 26 7b 63 68 61 | 72 7d 5c 20 7b 2a 7d 5c |\;\&{cha|r}\ {*}\|
|00003920| 5c 7b 62 75 66 66 65 72 | 7d 2c 5c 3b 25 0d 5c 26 |\{buffer|},\;%.\&|
|00003930| 7b 75 6e 73 69 67 6e 65 | 64 7d 5c 20 5c 5c 7b 62 |{unsigne|d}\ \\{b|
|00003940| 75 66 6c 65 6e 7d 29 24 | 5c 44 43 7b 7d 20 72 65 |uflen})$|\DC{} re|
|00003950| 61 64 73 20 75 70 20 74 | 6f 20 5c 43 44 7b 7d 24 |ads up t|o \CD{}$|
|00003960| 5c 5c 7b 62 75 66 6c 65 | 6e 7d 24 5c 44 43 7b 7d |\\{bufle|n}$\DC{}|
|00003970| 20 62 79 74 65 73 20 66 | 72 6f 6d 0d 74 68 65 20 | bytes f|rom.the |
|00003980| 73 6f 63 6b 65 74 2e 20 | 5c 43 44 7b 7d 24 5c 5c |socket. |\CD{}$\\|
|00003990| 7b 72 65 61 64 7d 28 5c | 2c 29 24 5c 44 43 7b 7d |{read}(\|,)$\DC{}|
|000039a0| 20 66 6f 72 20 73 6f 63 | 6b 65 74 73 20 64 69 66 | for soc|kets dif|
|000039b0| 66 65 72 73 20 66 72 6f | 6d 20 5c 43 44 7b 7d 24 |fers fro|m \CD{}$|
|000039c0| 5c 5c 7b 72 65 61 64 7d | 28 25 0d 5c 2c 29 24 5c |\\{read}|(%.\,)$\|
|000039d0| 44 43 7b 7d 20 66 6f 72 | 20 66 69 6c 65 73 20 6d |DC{} for| files m|
|000039e0| 61 69 6e 6c 79 20 69 6e | 20 74 68 61 74 20 69 74 |ainly in| that it|
|000039f0| 0d 6d 61 79 20 72 65 61 | 64 20 66 65 77 65 72 20 |.may rea|d fewer |
|00003a00| 74 68 61 6e 20 74 68 65 | 20 72 65 71 75 65 73 74 |than the| request|
|00003a10| 65 64 20 6e 75 6d 62 65 | 72 20 6f 66 20 62 79 74 |ed numbe|r of byt|
|00003a20| 65 73 20 77 69 74 68 6f | 75 74 20 77 61 69 74 69 |es witho|ut waiti|
|00003a30| 6e 67 20 66 6f 72 20 74 | 68 65 20 72 65 73 74 0d |ng for t|he rest.|
|00003a40| 74 6f 0d 61 72 72 69 76 | 65 2e 0d 5c 6d 65 64 73 |to.arriv|e..\meds|
|00003a50| 6b 69 70 0d 45 72 72 6f | 72 20 63 6f 64 65 73 3a |kip.Erro|r codes:|
|00003a60| 0d 5c 6d 65 64 73 6b 69 | 70 5c 70 6c 61 69 6e 74 |.\medski|p\plaint|
|00003a70| 77 6f 63 6f 6c 7b 0d 5c | 43 44 7b 7d 24 5c 5c 7b |wocol{.\|CD{}$\\{|
|00003a80| 45 57 4f 55 4c 44 42 4c | 4f 43 4b 7d 24 5c 44 43 |EWOULDBL|OCK}$\DC|
|00003a90| 7b 7d 26 54 68 65 20 73 | 6f 63 6b 65 74 20 69 73 |{}&The s|ocket is|
|00003aa0| 20 6e 6f 6e 62 6c 6f 63 | 6b 69 6e 67 20 61 6e 64 | nonbloc|king and|
|00003ab0| 20 74 68 65 72 65 20 69 | 73 20 6e 6f 20 64 61 74 | there i|s no dat|
|00003ac0| 61 0d 69 6d 6d 65 64 69 | 61 74 65 6c 79 20 61 76 |a.immedi|ately av|
|00003ad0| 61 69 6c 61 62 6c 65 2e | 5c 63 72 0d 7d 0d 0d 5c |ailable.|\cr.}..\|
|00003ae0| 66 69 0d 0d 5c 4d 32 34 | 2e 20 5c 43 44 7b 7d 24 |fi..\M24|. \CD{}$|
|00003af0| 5c 26 7b 69 6e 74 7d 5c | 20 5c 5c 7b 72 65 61 64 |\&{int}\| \\{read|
|00003b00| 76 7d 28 5c 26 7b 69 6e | 74 7d 5c 20 5c 7c 73 2c |v}(\&{in|t}\ \|s,|
|00003b10| 5c 3b 5c 26 7b 73 74 72 | 75 63 74 7d 5c 20 5c 5c |\;\&{str|uct}\ \\|
|00003b20| 7b 69 6f 76 65 63 7d 5c | 20 7b 2a 7d 25 0d 5c 5c |{iovec}\| {*}%.\\|
|00003b30| 7b 69 6f 76 7d 2c 5c 3b | 5c 26 7b 69 6e 74 7d 5c |{iov},\;|\&{int}\|
|00003b40| 20 5c 5c 7b 63 6f 75 6e | 74 7d 29 24 5c 44 43 7b | \\{coun|t})$\DC{|
|00003b50| 7d 20 70 65 72 66 6f 72 | 6d 73 20 74 68 65 20 73 |} perfor|ms the s|
|00003b60| 61 6d 65 0d 61 63 74 69 | 6f 6e 2c 20 62 75 74 20 |ame.acti|on, but |
|00003b70| 73 63 61 74 74 65 72 73 | 20 74 68 65 20 69 6e 70 |scatters| the inp|
|00003b80| 75 74 20 64 61 74 61 20 | 69 6e 74 6f 20 74 68 65 |ut data |into the|
|00003b90| 20 5c 43 44 7b 7d 24 5c | 5c 7b 63 6f 75 6e 74 7d | \CD{}$\|\{count}|
|00003ba0| 24 5c 44 43 7b 7d 20 62 | 75 66 66 65 72 73 20 6f |$\DC{} b|uffers o|
|00003bb0| 66 0d 74 68 65 20 5c 43 | 44 7b 7d 24 5c 5c 7b 69 |f.the \C|D{}$\\{i|
|00003bc0| 6f 76 7d 24 5c 44 43 7b | 7d 6e 61 72 72 61 79 2c |ov}$\DC{|}narray,|
|00003bd0| 20 61 6c 77 61 79 73 0d | 66 69 6c 6c 69 6e 67 20 | always.|filling |
|00003be0| 6f 6e 65 20 62 75 66 66 | 65 72 20 63 6f 6d 70 6c |one buff|er compl|
|00003bf0| 65 74 65 6c 79 20 62 65 | 66 6f 72 65 20 70 72 6f |etely be|fore pro|
|00003c00| 63 65 65 64 69 6e 67 20 | 74 6f 20 74 68 65 20 6e |ceeding |to the n|
|00003c10| 65 78 74 2e 20 5c 43 44 | 7b 7d 24 5c 5c 7b 69 6f |ext. \CD|{}$\\{io|
|00003c20| 76 65 63 7d 24 25 0d 5c | 44 43 7b 7d 20 69 73 20 |vec}$%.\|DC{} is |
|00003c30| 64 65 66 69 6e 65 64 20 | 61 73 0d 66 6f 6c 6c 6f |defined |as.follo|
|00003c40| 77 73 3a 0d 5c 59 5c 50 | 20 24 5c 26 7b 73 74 72 |ws:.\Y\P| $\&{str|
|00003c50| 75 63 74 7d 5c 20 5c 5c | 7b 69 6f 76 65 63 7d 5c |uct}\ \\|{iovec}\|
|00003c60| 20 5c 7b 5c 31 24 5c 36 | 0d 24 5c 5c 7b 63 61 64 | \{\1$\6|.$\\{cad|
|00003c70| 64 72 5c 5f 74 7d 5c 20 | 5c 5c 7b 69 6f 76 5c 5f |dr\_t}\ |\\{iov\_|
|00003c80| 62 61 73 65 7d 3b 24 5c | 35 0d 5c 43 7b 20 41 64 |base};$\|5.\C{ Ad|
|00003c90| 64 72 65 73 73 20 6f 66 | 20 74 68 69 73 20 62 75 |dress of| this bu|
|00003ca0| 66 66 65 72 20 7d 5c 36 | 0d 24 5c 26 7b 69 6e 74 |ffer }\6|.$\&{int|
|00003cb0| 7d 5c 20 5c 5c 7b 69 6f | 76 5c 5f 6c 65 6e 7d 3b |}\ \\{io|v\_len};|
|00003cc0| 24 5c 35 0d 5c 43 7b 20 | 4c 65 6e 67 74 68 20 6f |$\5.\C{ |Length o|
|00003cd0| 66 20 74 68 65 20 62 75 | 66 66 65 72 20 7d 5c 32 |f the bu|ffer }\2|
|00003ce0| 5c 36 0d 24 5c 7d 3b 24 | 5c 70 61 72 0d 5c 66 69 |\6.$\};$|\par.\fi|
|00003cf0| 0d 0d 5c 4d 32 35 2e 20 | 5c 43 44 7b 7d 24 5c 26 |..\M25. |\CD{}$\&|
|00003d00| 7b 69 6e 74 7d 5c 20 5c | 5c 7b 72 65 63 76 7d 28 |{int}\ \|\{recv}(|
|00003d10| 5c 26 7b 69 6e 74 7d 5c | 20 5c 7c 73 2c 5c 3b 5c |\&{int}\| \|s,\;\|
|00003d20| 26 7b 76 6f 69 64 7d 5c | 20 7b 2a 7d 5c 5c 7b 62 |&{void}\| {*}\\{b|
|00003d30| 75 66 66 65 72 7d 2c 5c | 3b 5c 26 7b 69 6e 74 7d |uffer},\|;\&{int}|
|00003d40| 5c 0d 5c 5c 7b 62 75 66 | 6c 65 6e 7d 2c 5c 3b 5c |\.\\{buf|len},\;\|
|00003d50| 26 7b 69 6e 74 7d 5c 20 | 5c 5c 7b 66 6c 61 67 73 |&{int}\ |\\{flags|
|00003d60| 7d 29 24 5c 44 43 7b 7d | 20 69 73 20 69 64 65 6e |})$\DC{}| is iden|
|00003d70| 74 69 63 61 6c 20 74 6f | 20 5c 43 44 7b 7d 24 5c |tical to| \CD{}$\|
|00003d80| 5c 7b 72 65 61 64 7d 28 | 5c 2c 29 24 25 0d 5c 44 |\{read}(|\,)$%.\D|
|00003d90| 43 7b 7d 2c 0d 65 78 63 | 65 70 74 20 66 6f 72 20 |C{},.exc|ept for |
|00003da0| 74 68 65 20 5c 43 44 7b | 7d 24 5c 5c 7b 66 6c 61 |the \CD{|}$\\{fla|
|00003db0| 67 73 7d 24 5c 44 43 7b | 7d 20 70 61 72 61 6d 65 |gs}$\DC{|} parame|
|00003dc0| 74 65 72 2e 20 49 66 20 | 74 68 65 20 5c 43 44 7b |ter. If |the \CD{|
|00003dd0| 7d 24 5c 5c 7b 4d 53 47 | 5c 5f 4f 4f 42 7d 24 5c |}$\\{MSG|\_OOB}$\|
|00003de0| 44 43 7b 7d 0d 66 6c 61 | 67 20 69 73 20 73 65 74 |DC{}.fla|g is set|
|00003df0| 20 66 6f 72 20 61 20 73 | 74 72 65 61 6d 20 73 6f | for a s|tream so|
|00003e00| 63 6b 65 74 0d 74 68 61 | 74 20 73 75 70 70 6f 72 |cket.tha|t suppor|
|00003e10| 74 73 20 6f 75 74 2d 6f | 66 2d 62 61 6e 64 20 64 |ts out-o|f-band d|
|00003e20| 61 74 61 2c 20 5c 43 44 | 7b 7d 24 5c 5c 7b 72 65 |ata, \CD|{}$\\{re|
|00003e30| 63 76 7d 28 5c 2c 29 24 | 5c 44 43 7b 7d 20 72 65 |cv}(\,)$|\DC{} re|
|00003e40| 61 64 73 20 6f 75 74 2d | 6f 66 2d 62 61 6e 64 0d |ads out-|of-band.|
|00003e50| 64 61 74 61 2e 0d 0d 5c | 66 69 0d 0d 5c 4d 32 36 |data...\|fi..\M26|
|00003e60| 2e 20 5c 43 44 7b 7d 24 | 5c 26 7b 69 6e 74 7d 5c |. \CD{}$|\&{int}\|
|00003e70| 20 5c 5c 7b 72 65 63 76 | 66 72 6f 6d 7d 28 5c 26 | \\{recv|from}(\&|
|00003e80| 7b 69 6e 74 7d 5c 20 5c | 7c 73 2c 5c 3b 5c 26 7b |{int}\ \||s,\;\&{|
|00003e90| 76 6f 69 64 7d 5c 20 7b | 2a 7d 5c 5c 7b 62 75 66 |void}\ {|*}\\{buf|
|00003ea0| 66 65 72 7d 2c 5c 3b 25 | 0d 5c 26 7b 69 6e 74 7d |fer},\;%|.\&{int}|
|00003eb0| 5c 20 5c 5c 7b 62 75 66 | 6c 65 6e 7d 2c 5c 3b 5c |\ \\{buf|len},\;\|
|00003ec0| 26 7b 69 6e 74 7d 5c 20 | 5c 5c 7b 66 6c 61 67 73 |&{int}\ |\\{flags|
|00003ed0| 7d 2c 5c 3b 5c 26 7b 76 | 6f 69 64 7d 5c 20 7b 2a |},\;\&{v|oid}\ {*|
|00003ee0| 7d 5c 5c 7b 66 72 6f 6d | 7d 2c 5c 3b 5c 26 7b 69 |}\\{from|},\;\&{i|
|00003ef0| 6e 74 7d 5c 20 7b 2a 7d | 25 0d 5c 5c 7b 66 72 6f |nt}\ {*}|%.\\{fro|
|00003f00| 6d 6c 65 6e 7d 29 24 5c | 44 43 7b 7d 0d 69 73 20 |mlen})$\|DC{}.is |
|00003f10| 74 68 65 20 65 71 75 69 | 76 61 6c 65 6e 74 20 6f |the equi|valent o|
|00003f20| 66 20 5c 43 44 7b 7d 24 | 5c 5c 7b 72 65 63 76 7d |f \CD{}$|\\{recv}|
|00003f30| 28 5c 2c 29 24 5c 44 43 | 7b 7d 20 66 6f 72 20 75 |(\,)$\DC|{} for u|
|00003f40| 6e 63 6f 6e 6e 65 63 74 | 65 64 20 64 61 74 61 67 |nconnect|ed datag|
|00003f50| 72 61 6d 20 73 6f 63 6b | 65 74 73 2e 0d 49 66 20 |ram sock|ets..If |
|00003f60| 5c 43 44 7b 7d 24 5c 5c | 7b 66 72 6f 6d 7d 24 5c |\CD{}$\\|{from}$\|
|00003f70| 44 43 7b 7d 20 69 73 20 | 6e 6f 74 0d 5c 43 44 7b |DC{} is |not.\CD{|
|00003f80| 7d 24 5c 5c 7b 4e 55 4c | 4c 7d 24 5c 44 43 7b 7d |}$\\{NUL|L}$\DC{}|
|00003f90| 2c 20 69 74 20 77 69 6c | 6c 20 62 65 20 73 65 74 |, it wil|l be set|
|00003fa0| 20 74 6f 20 74 68 65 20 | 61 64 64 72 65 73 73 20 | to the |address |
|00003fb0| 6f 66 20 74 68 65 20 73 | 65 6e 64 65 72 20 6f 66 |of the s|ender of|
|00003fc0| 20 74 68 65 0d 6d 65 73 | 73 61 67 65 2e 0d 0d 5c | the.mes|sage...\|
|00003fd0| 66 69 0d 0d 5c 4d 32 37 | 2e 20 5c 43 44 7b 7d 24 |fi..\M27|. \CD{}$|
|00003fe0| 5c 26 7b 69 6e 74 7d 5c | 20 5c 5c 7b 72 65 63 76 |\&{int}\| \\{recv|
|00003ff0| 6d 73 67 7d 28 5c 26 7b | 69 6e 74 7d 5c 20 5c 7c |msg}(\&{|int}\ \||
|00004000| 73 2c 5c 3b 5c 26 7b 73 | 74 72 75 63 74 7d 5c 20 |s,\;\&{s|truct}\ |
|00004010| 5c 5c 7b 6d 73 67 68 64 | 72 7d 5c 20 7b 2a 7d 25 |\\{msghd|r}\ {*}%|
|00004020| 0d 5c 5c 7b 6d 73 67 7d | 2c 5c 3b 5c 26 7b 69 6e |.\\{msg}|,\;\&{in|
|00004030| 74 7d 5c 20 5c 5c 7b 66 | 6c 61 67 73 7d 29 24 5c |t}\ \\{f|lags})$\|
|00004040| 44 43 7b 7d 20 69 73 20 | 74 68 65 20 6d 6f 73 74 |DC{} is |the most|
|00004050| 20 67 65 6e 65 72 61 6c | 20 72 6f 75 74 69 6e 65 | general| routine|
|00004060| 2c 0d 63 6f 6d 62 69 6e | 69 6e 67 20 74 68 65 20 |,.combin|ing the |
|00004070| 70 6f 73 73 69 62 69 6c | 69 74 69 65 73 20 6f 66 |possibil|ities of|
|00004080| 20 5c 43 44 7b 7d 24 5c | 5c 7b 72 65 61 64 76 7d | \CD{}$\|\{readv}|
|00004090| 28 5c 2c 29 24 5c 44 43 | 7b 7d 20 61 6e 64 20 5c |(\,)$\DC|{} and \|
|000040a0| 43 44 7b 7d 24 25 0d 5c | 5c 7b 72 65 63 76 66 72 |CD{}$%.\|\{recvfr|
|000040b0| 6f 6d 7d 28 5c 2c 29 24 | 5c 44 43 7b 7d 2e 20 5c |om}(\,)$|\DC{}. \|
|000040c0| 43 44 7b 7d 24 5c 5c 7b | 6d 73 67 68 64 72 7d 24 |CD{}$\\{|msghdr}$|
|000040d0| 5c 44 43 7b 7d 20 69 73 | 20 64 65 66 69 6e 65 64 |\DC{} is| defined|
|000040e0| 20 61 73 0d 66 6f 6c 6c | 6f 77 73 3a 0d 5c 59 5c | as.foll|ows:.\Y\|
|000040f0| 50 20 24 5c 26 7b 73 74 | 72 75 63 74 7d 5c 20 5c |P $\&{st|ruct}\ \|
|00004100| 5c 7b 6d 73 67 68 64 72 | 7d 5c 20 5c 7b 5c 31 24 |\{msghdr|}\ \{\1$|
|00004110| 5c 36 0d 24 5c 5c 7b 63 | 61 64 64 72 5c 5f 74 7d |\6.$\\{c|addr\_t}|
|00004120| 5c 20 5c 5c 7b 6d 73 67 | 5c 5f 6e 61 6d 65 7d 3b |\ \\{msg|\_name};|
|00004130| 24 5c 35 0d 5c 43 7b 20 | 4c 69 6b 65 20 24 5c 5c |$\5.\C{ |Like $\\|
|00004140| 7b 66 72 6f 6d 7d 24 20 | 69 6e 20 24 5c 5c 7b 72 |{from}$ |in $\\{r|
|00004150| 65 63 76 66 72 6f 6d 7d | 28 5c 2c 29 24 20 7d 5c |ecvfrom}|(\,)$ }\|
|00004160| 36 0d 24 5c 26 7b 69 6e | 74 7d 5c 20 5c 5c 7b 6d |6.$\&{in|t}\ \\{m|
|00004170| 73 67 5c 5f 6e 61 6d 65 | 6c 65 6e 7d 3b 24 5c 35 |sg\_name|len};$\5|
|00004180| 0d 5c 43 7b 20 4c 69 6b | 65 20 24 5c 5c 7b 66 72 |.\C{ Lik|e $\\{fr|
|00004190| 6f 6d 6c 65 6e 7d 24 20 | 69 6e 20 24 5c 5c 7b 72 |omlen}$ |in $\\{r|
|000041a0| 65 63 76 66 72 6f 6d 7d | 28 5c 2c 29 24 20 7d 5c |ecvfrom}|(\,)$ }\|
|000041b0| 36 0d 24 5c 26 7b 73 74 | 72 75 63 74 7d 5c 20 5c |6.$\&{st|ruct}\ \|
|000041c0| 5c 7b 69 6f 76 65 63 7d | 5c 20 7b 7b 2a 7d 7d 5c |\{iovec}|\ {{*}}\|
|000041d0| 5c 7b 6d 73 67 5c 5f 69 | 6f 76 7d 3b 24 5c 35 0d |\{msg\_i|ov};$\5.|
|000041e0| 5c 43 7b 20 53 63 61 74 | 74 65 72 2f 67 61 74 68 |\C{ Scat|ter/gath|
|000041f0| 65 72 20 61 72 72 61 79 | 20 7d 5c 36 0d 24 5c 26 |er array| }\6.$\&|
|00004200| 7b 69 6e 74 7d 5c 20 5c | 5c 7b 6d 73 67 5c 5f 69 |{int}\ \|\{msg\_i|
|00004210| 6f 76 6c 65 6e 7d 3b 24 | 5c 35 0d 5c 43 7b 20 4e |ovlen};$|\5.\C{ N|
|00004220| 75 6d 62 65 72 20 6f 66 | 20 65 6c 65 6d 65 6e 74 |umber of| element|
|00004230| 73 20 69 6e 20 24 5c 5c | 7b 6d 73 67 5c 5f 69 6f |s in $\\|{msg\_io|
|00004240| 76 7d 24 20 7d 5c 36 0d | 24 5c 5c 7b 63 61 64 64 |v}$ }\6.|$\\{cadd|
|00004250| 72 5c 5f 74 7d 5c 20 5c | 5c 7b 6d 73 67 5c 5f 61 |r\_t}\ \|\{msg\_a|
|00004260| 63 63 72 69 67 68 74 73 | 7d 3b 24 5c 35 0d 5c 43 |ccrights|};$\5.\C|
|00004270| 7b 20 41 63 63 65 73 73 | 20 72 69 67 68 74 73 20 |{ Access| rights |
|00004280| 73 65 6e 74 2f 72 65 63 | 65 69 76 65 64 2e 20 4e |sent/rec|eived. N|
|00004290| 6f 74 20 75 73 65 64 20 | 69 6e 20 5c 2e 7b 47 55 |ot used |in \.{GU|
|000042a0| 53 49 7d 7d 5c 36 0d 24 | 5c 26 7b 69 6e 74 7d 5c |SI}}\6.$|\&{int}\|
|000042b0| 20 5c 5c 7b 6d 73 67 5c | 5f 61 63 63 72 69 67 68 | \\{msg\|_accrigh|
|000042c0| 74 73 6c 65 6e 7d 3b 24 | 5c 32 5c 36 0d 24 5c 7d |tslen};$|\2\6.$\}|
|000042d0| 3b 24 5c 70 61 72 0d 5c | 66 69 0d 0d 5c 4d 32 38 |;$\par.\|fi..\M28|
|000042e0| 2e 20 5c 43 44 7b 7d 24 | 5c 26 7b 69 6e 74 7d 5c |. \CD{}$|\&{int}\|
|000042f0| 20 5c 5c 7b 77 72 69 74 | 65 7d 28 5c 26 7b 69 6e | \\{writ|e}(\&{in|
|00004300| 74 7d 5c 20 5c 7c 73 2c | 5c 3b 5c 26 7b 63 68 61 |t}\ \|s,|\;\&{cha|
|00004310| 72 7d 5c 20 7b 2a 7d 5c | 5c 7b 62 75 66 66 65 72 |r}\ {*}\|\{buffer|
|00004320| 7d 2c 5c 3b 25 0d 5c 26 | 7b 75 6e 73 69 67 6e 65 |},\;%.\&|{unsigne|
|00004330| 64 7d 5c 20 5c 5c 7b 62 | 75 66 6c 65 6e 7d 29 24 |d}\ \\{b|uflen})$|
|00004340| 5c 44 43 7b 7d 20 77 72 | 69 74 65 73 20 75 70 20 |\DC{} wr|ites up |
|00004350| 74 6f 20 5c 43 44 7b 7d | 24 5c 5c 7b 62 75 66 6c |to \CD{}|$\\{bufl|
|00004360| 65 6e 7d 24 5c 44 43 7b | 7d 20 62 79 74 65 73 20 |en}$\DC{|} bytes |
|00004370| 74 6f 0d 74 68 65 20 73 | 6f 63 6b 65 74 2e 20 41 |to.the s|ocket. A|
|00004380| 73 20 6f 70 70 6f 73 65 | 64 20 74 6f 20 5c 43 44 |s oppose|d to \CD|
|00004390| 7b 7d 24 5c 5c 7b 72 65 | 61 64 7d 28 5c 2c 29 24 |{}$\\{re|ad}(\,)$|
|000043a0| 5c 44 43 7b 7d 2c 20 5c | 43 44 7b 7d 24 5c 5c 7b |\DC{}, \|CD{}$\\{|
|000043b0| 77 72 69 74 65 7d 28 5c | 2c 29 24 5c 44 43 7b 7d |write}(\|,)$\DC{}|
|000043c0| 0d 66 6f 72 20 6e 6f 6e | 62 6c 6f 63 6b 69 6e 67 |.for non|blocking|
|000043d0| 20 73 6f 63 6b 65 74 73 | 20 61 6c 77 61 79 73 20 | sockets| always |
|000043e0| 62 6c 6f 63 6b 73 0d 75 | 6e 74 69 6c 20 61 6c 6c |blocks.u|ntil all|
|000043f0| 20 62 79 74 65 73 20 61 | 72 65 20 77 72 69 74 74 | bytes a|re writt|
|00004400| 65 6e 20 6f 72 20 61 6e | 20 65 72 72 6f 72 20 6f |en or an| error o|
|00004410| 63 63 75 72 73 2e 0d 0d | 5c 6d 65 64 73 6b 69 70 |ccurs...|\medskip|
|00004420| 0d 45 72 72 6f 72 20 63 | 6f 64 65 73 3a 0d 5c 6d |.Error c|odes:.\m|
|00004430| 65 64 73 6b 69 70 5c 70 | 6c 61 69 6e 74 77 6f 63 |edskip\p|laintwoc|
|00004440| 6f 6c 7b 0d 5c 43 44 7b | 7d 24 5c 5c 7b 45 57 4f |ol{.\CD{|}$\\{EWO|
|00004450| 55 4c 44 42 4c 4f 43 4b | 7d 24 5c 44 43 7b 7d 26 |ULDBLOCK|}$\DC{}&|
|00004460| 54 68 65 20 73 6f 63 6b | 65 74 20 69 73 20 6e 6f |The sock|et is no|
|00004470| 6e 62 6c 6f 63 6b 69 6e | 67 20 61 6e 64 20 64 61 |nblockin|g and da|
|00004480| 74 61 20 63 61 6e 27 74 | 20 62 65 0d 69 6d 6d 65 |ta can't| be.imme|
|00004490| 64 69 61 74 65 6c 79 20 | 77 72 69 74 74 65 6e 2e |diately |written.|
|000044a0| 5c 63 72 0d 7d 0d 0d 5c | 66 69 0d 0d 5c 4d 32 39 |\cr.}..\|fi..\M29|
|000044b0| 2e 20 5c 43 44 7b 7d 24 | 5c 26 7b 69 6e 74 7d 5c |. \CD{}$|\&{int}\|
|000044c0| 20 5c 5c 7b 77 72 69 74 | 65 76 7d 28 5c 26 7b 69 | \\{writ|ev}(\&{i|
|000044d0| 6e 74 7d 5c 20 5c 7c 73 | 2c 5c 3b 5c 26 7b 73 74 |nt}\ \|s|,\;\&{st|
|000044e0| 72 75 63 74 7d 5c 20 5c | 5c 7b 69 6f 76 65 63 7d |ruct}\ \|\{iovec}|
|000044f0| 5c 20 7b 2a 7d 25 0d 5c | 5c 7b 69 6f 76 7d 2c 5c |\ {*}%.\|\{iov},\|
|00004500| 3b 5c 26 7b 69 6e 74 7d | 5c 20 5c 5c 7b 63 6f 75 |;\&{int}|\ \\{cou|
|00004510| 6e 74 7d 29 24 5c 44 43 | 7b 7d 20 70 65 72 66 6f |nt})$\DC|{} perfo|
|00004520| 72 6d 73 20 74 68 65 20 | 73 61 6d 65 0d 61 63 74 |rms the |same.act|
|00004530| 69 6f 6e 2c 20 62 75 74 | 20 67 61 74 68 65 72 73 |ion, but| gathers|
|00004540| 20 74 68 65 20 6f 75 74 | 70 75 74 20 64 61 74 61 | the out|put data|
|00004550| 20 66 72 6f 6d 20 74 68 | 65 20 5c 43 44 7b 7d 24 | from th|e \CD{}$|
|00004560| 5c 5c 7b 63 6f 75 6e 74 | 7d 24 5c 44 43 7b 7d 20 |\\{count|}$\DC{} |
|00004570| 62 75 66 66 65 72 73 20 | 6f 66 0d 74 68 65 20 5c |buffers |of.the \|
|00004580| 43 44 7b 7d 24 5c 5c 7b | 69 6f 76 7d 24 5c 44 43 |CD{}$\\{|iov}$\DC|
|00004590| 7b 7d 6e 61 72 72 61 79 | 2c 20 61 6c 77 61 79 73 |{}narray|, always|
|000045a0| 0d 73 65 6e 64 69 6e 67 | 20 6f 6e 65 20 62 75 66 |.sending| one buf|
|000045b0| 66 65 72 20 63 6f 6d 70 | 6c 65 74 65 6c 79 20 62 |fer comp|letely b|
|000045c0| 65 66 6f 72 65 20 70 72 | 6f 63 65 65 64 69 6e 67 |efore pr|oceeding|
|000045d0| 20 74 6f 20 74 68 65 20 | 6e 65 78 74 2e 0d 0d 5c | to the |next...\|
|000045e0| 66 69 0d 0d 5c 4d 33 30 | 2e 20 5c 43 44 7b 7d 24 |fi..\M30|. \CD{}$|
|000045f0| 5c 26 7b 69 6e 74 7d 5c | 20 5c 5c 7b 73 65 6e 64 |\&{int}\| \\{send|
|00004600| 7d 28 5c 26 7b 69 6e 74 | 7d 5c 20 5c 7c 73 2c 5c |}(\&{int|}\ \|s,\|
|00004610| 3b 5c 26 7b 76 6f 69 64 | 7d 5c 20 7b 2a 7d 5c 5c |;\&{void|}\ {*}\\|
|00004620| 7b 62 75 66 66 65 72 7d | 2c 5c 3b 5c 26 7b 69 6e |{buffer}|,\;\&{in|
|00004630| 74 7d 5c 0d 5c 5c 7b 62 | 75 66 6c 65 6e 7d 2c 5c |t}\.\\{b|uflen},\|
|00004640| 3b 5c 26 7b 69 6e 74 7d | 5c 20 5c 5c 7b 66 6c 61 |;\&{int}|\ \\{fla|
|00004650| 67 73 7d 29 24 5c 44 43 | 7b 7d 20 69 73 20 69 64 |gs})$\DC|{} is id|
|00004660| 65 6e 74 69 63 61 6c 20 | 74 6f 20 5c 43 44 7b 7d |entical |to \CD{}|
|00004670| 24 5c 5c 7b 77 72 69 74 | 65 7d 28 5c 2c 29 24 25 |$\\{writ|e}(\,)$%|
|00004680| 0d 5c 44 43 7b 7d 2c 0d | 65 78 63 65 70 74 20 66 |.\DC{},.|except f|
|00004690| 6f 72 20 74 68 65 20 5c | 43 44 7b 7d 24 5c 5c 7b |or the \|CD{}$\\{|
|000046a0| 66 6c 61 67 73 7d 24 5c | 44 43 7b 7d 20 70 61 72 |flags}$\|DC{} par|
|000046b0| 61 6d 65 74 65 72 2e 20 | 49 66 20 74 68 65 20 5c |ameter. |If the \|
|000046c0| 43 44 7b 7d 24 5c 5c 7b | 4d 53 47 5c 5f 4f 4f 42 |CD{}$\\{|MSG\_OOB|
|000046d0| 7d 24 5c 44 43 7b 7d 0d | 66 6c 61 67 20 69 73 20 |}$\DC{}.|flag is |
|000046e0| 73 65 74 20 66 6f 72 20 | 61 20 73 74 72 65 61 6d |set for |a stream|
|000046f0| 20 73 6f 63 6b 65 74 0d | 74 68 61 74 20 73 75 70 | socket.|that sup|
|00004700| 70 6f 72 74 73 20 6f 75 | 74 2d 6f 66 2d 62 61 6e |ports ou|t-of-ban|
|00004710| 64 20 64 61 74 61 2c 20 | 5c 43 44 7b 7d 24 5c 5c |d data, |\CD{}$\\|
|00004720| 7b 73 65 6e 64 7d 28 5c | 2c 29 24 5c 44 43 7b 7d |{send}(\|,)$\DC{}|
|00004730| 20 73 65 6e 64 73 20 61 | 6e 20 6f 75 74 2d 6f 66 | sends a|n out-of|
|00004740| 2d 62 61 6e 64 0d 6d 65 | 73 73 61 67 65 2e 0d 0d |-band.me|ssage...|
|00004750| 5c 66 69 0d 0d 5c 4d 33 | 31 2e 20 5c 43 44 7b 7d |\fi..\M3|1. \CD{}|
|00004760| 24 5c 26 7b 69 6e 74 7d | 5c 20 5c 5c 7b 73 65 6e |$\&{int}|\ \\{sen|
|00004770| 64 74 6f 7d 28 5c 26 7b | 69 6e 74 7d 5c 20 5c 7c |dto}(\&{|int}\ \||
|00004780| 73 2c 5c 3b 5c 26 7b 76 | 6f 69 64 7d 5c 20 7b 2a |s,\;\&{v|oid}\ {*|
|00004790| 7d 5c 5c 7b 62 75 66 66 | 65 72 7d 2c 5c 3b 25 0d |}\\{buff|er},\;%.|
|000047a0| 5c 26 7b 69 6e 74 7d 5c | 20 5c 5c 7b 62 75 66 6c |\&{int}\| \\{bufl|
|000047b0| 65 6e 7d 2c 5c 3b 5c 26 | 7b 69 6e 74 7d 5c 20 5c |en},\;\&|{int}\ \|
|000047c0| 5c 7b 66 6c 61 67 73 7d | 2c 5c 3b 5c 26 7b 76 6f |\{flags}|,\;\&{vo|
|000047d0| 69 64 7d 5c 20 7b 2a 7d | 5c 5c 7b 74 6f 7d 2c 5c |id}\ {*}|\\{to},\|
|000047e0| 3b 5c 26 7b 69 6e 74 7d | 5c 20 7b 2a 7d 25 0d 5c |;\&{int}|\ {*}%.\|
|000047f0| 5c 7b 74 6f 6c 65 6e 7d | 29 24 5c 44 43 7b 7d 0d |\{tolen}|)$\DC{}.|
|00004800| 69 73 20 74 68 65 20 65 | 71 75 69 76 61 6c 65 6e |is the e|quivalen|
|00004810| 74 20 6f 66 20 5c 43 44 | 7b 7d 24 5c 5c 7b 73 65 |t of \CD|{}$\\{se|
|00004820| 6e 64 7d 28 5c 2c 29 24 | 5c 44 43 7b 7d 20 66 6f |nd}(\,)$|\DC{} fo|
|00004830| 72 20 75 6e 63 6f 6e 6e | 65 63 74 65 64 20 64 61 |r unconn|ected da|
|00004840| 74 61 67 72 61 6d 20 73 | 6f 63 6b 65 74 73 2e 0d |tagram s|ockets..|
|00004850| 54 68 65 20 6d 65 73 73 | 61 67 65 20 77 69 6c 6c |The mess|age will|
|00004860| 0d 62 65 20 73 65 6e 74 | 20 74 6f 20 74 68 65 20 |.be sent| to the |
|00004870| 73 6f 63 6b 65 74 20 77 | 68 6f 73 65 20 61 64 64 |socket w|hose add|
|00004880| 72 65 73 73 20 69 73 20 | 67 69 76 65 6e 20 69 6e |ress is |given in|
|00004890| 20 5c 43 44 7b 7d 24 5c | 5c 7b 74 6f 7d 24 5c 44 | \CD{}$\|\{to}$\D|
|000048a0| 43 7b 7d 2e 0d 0d 5c 66 | 69 0d 0d 5c 4d 33 32 2e |C{}...\f|i..\M32.|
|000048b0| 20 5c 43 44 7b 7d 24 5c | 26 7b 69 6e 74 7d 5c 20 | \CD{}$\|&{int}\ |
|000048c0| 5c 5c 7b 73 65 6e 64 6d | 73 67 7d 28 5c 26 7b 69 |\\{sendm|sg}(\&{i|
|000048d0| 6e 74 7d 5c 20 5c 7c 73 | 2c 5c 3b 5c 26 7b 73 74 |nt}\ \|s|,\;\&{st|
|000048e0| 72 75 63 74 7d 5c 20 5c | 5c 7b 6d 73 67 68 64 72 |ruct}\ \|\{msghdr|
|000048f0| 7d 5c 20 7b 2a 7d 25 0d | 5c 5c 7b 6d 73 67 7d 2c |}\ {*}%.|\\{msg},|
|00004900| 5c 3b 5c 26 7b 69 6e 74 | 7d 5c 20 5c 5c 7b 66 6c |\;\&{int|}\ \\{fl|
|00004910| 61 67 73 7d 29 24 5c 44 | 43 7b 7d 20 63 6f 6d 62 |ags})$\D|C{} comb|
|00004920| 69 6e 65 73 20 74 68 65 | 20 70 6f 73 73 69 62 69 |ines the| possibi|
|00004930| 6c 69 74 69 65 73 0d 6f | 66 20 5c 43 44 7b 7d 24 |lities.o|f \CD{}$|
|00004940| 5c 5c 7b 77 72 69 74 65 | 76 7d 28 5c 2c 29 24 5c |\\{write|v}(\,)$\|
|00004950| 44 43 7b 7d 20 61 6e 64 | 20 5c 43 44 7b 7d 24 5c |DC{} and| \CD{}$\|
|00004960| 5c 7b 73 65 6e 64 74 6f | 7d 28 5c 2c 29 24 5c 44 |\{sendto|}(\,)$\D|
|00004970| 43 7b 7d 2e 0d 0d 5c 66 | 69 0d 0d 5c 4e 33 33 2e |C{}...\f|i..\N33.|
|00004980| 20 32 20 49 2f 4f 20 6d | 75 6c 74 69 70 6c 65 78 | 2 I/O m|ultiplex|
|00004990| 69 6e 67 2e 0d 0d 5c 66 | 69 0d 0d 5c 4d 33 34 2e |ing...\f|i..\M34.|
|000049a0| 20 5c 43 44 7b 7d 24 5c | 26 7b 69 6e 74 7d 5c 20 | \CD{}$\|&{int}\ |
|000049b0| 5c 5c 7b 73 65 6c 65 63 | 74 7d 28 5c 26 7b 69 6e |\\{selec|t}(\&{in|
|000049c0| 74 7d 5c 20 5c 5c 7b 77 | 69 64 74 68 7d 2c 5c 3b |t}\ \\{w|idth},\;|
|000049d0| 5c 5c 7b 66 64 5c 5f 73 | 65 74 7d 5c 20 7b 7b 2a |\\{fd\_s|et}\ {{*|
|000049e0| 7d 7d 25 0d 5c 5c 7b 72 | 65 61 64 66 64 73 7d 2c |}}%.\\{r|eadfds},|
|000049f0| 5c 3b 5c 5c 7b 66 64 5c | 5f 73 65 74 7d 5c 20 7b |\;\\{fd\|_set}\ {|
|00004a00| 7b 2a 7d 7d 5c 5c 7b 77 | 72 69 74 65 66 64 73 7d |{*}}\\{w|ritefds}|
|00004a10| 2c 5c 3b 5c 5c 7b 66 64 | 5c 5f 73 65 74 7d 5c 20 |,\;\\{fd|\_set}\ |
|00004a20| 7b 7b 2a 7d 7d 5c 5c 7b | 65 78 63 65 70 74 66 64 |{{*}}\\{|exceptfd|
|00004a30| 73 7d 2c 25 0d 5c 3b 5c | 26 7b 73 74 72 75 63 74 |s},%.\;\|&{struct|
|00004a40| 7d 5c 20 5c 5c 7b 74 69 | 6d 65 76 61 6c 7d 5c 20 |}\ \\{ti|meval}\ |
|00004a50| 7b 2a 7d 5c 5c 7b 74 69 | 6d 65 6f 75 74 7d 29 24 |{*}\\{ti|meout})$|
|00004a60| 5c 44 43 7b 7d 20 65 78 | 61 6d 69 6e 65 73 20 74 |\DC{} ex|amines t|
|00004a70| 68 65 20 49 2f 4f 20 64 | 65 73 63 72 69 70 74 6f |he I/O d|escripto|
|00004a80| 72 73 0d 73 70 65 63 69 | 66 69 65 64 0d 62 79 20 |rs.speci|fied.by |
|00004a90| 74 68 65 20 62 69 74 20 | 6d 61 73 6b 73 20 5c 43 |the bit |masks \C|
|00004aa0| 44 7b 7d 24 5c 5c 7b 72 | 65 61 64 66 73 7d 24 5c |D{}$\\{r|eadfs}$\|
|00004ab0| 44 43 7b 7d 2c 20 5c 43 | 44 7b 7d 24 5c 5c 7b 77 |DC{}, \C|D{}$\\{w|
|00004ac0| 72 69 74 65 66 73 7d 24 | 5c 44 43 7b 7d 2c 20 61 |ritefs}$|\DC{}, a|
|00004ad0| 6e 64 20 5c 43 44 7b 7d | 24 25 0d 5c 5c 7b 65 78 |nd \CD{}|$%.\\{ex|
|00004ae0| 63 65 70 74 66 73 7d 24 | 5c 44 43 7b 7d 20 74 6f |ceptfs}$|\DC{} to|
|00004af0| 20 73 65 65 20 69 66 20 | 74 68 65 79 20 61 72 65 | see if |they are|
|00004b00| 20 72 65 61 64 79 20 66 | 6f 72 0d 72 65 61 64 69 | ready f|or.readi|
|00004b10| 6e 67 2c 20 77 72 69 74 | 69 6e 67 2c 20 6f 72 20 |ng, writ|ing, or |
|00004b20| 68 61 76 65 20 61 6e 20 | 65 78 63 65 70 74 69 6f |have an |exceptio|
|00004b30| 6e 20 70 65 6e 64 69 6e | 67 2e 20 5c 43 44 7b 7d |n pendin|g. \CD{}|
|00004b40| 24 5c 5c 7b 77 69 64 74 | 68 7d 24 5c 44 43 7b 7d |$\\{widt|h}$\DC{}|
|00004b50| 20 69 73 20 74 68 65 0d | 6e 75 6d 62 65 72 20 6f | is the.|number o|
|00004b60| 66 20 73 69 67 6e 69 66 | 69 63 61 6e 74 0d 62 69 |f signif|icant.bi|
|00004b70| 74 73 20 69 6e 20 74 68 | 65 20 62 69 74 20 6d 61 |ts in th|e bit ma|
|00004b80| 73 6b 2e 20 5c 43 44 7b | 7d 24 5c 5c 7b 73 65 6c |sk. \CD{|}$\\{sel|
|00004b90| 65 63 74 7d 28 5c 2c 29 | 24 5c 44 43 7b 7d 20 72 |ect}(\,)|$\DC{} r|
|00004ba0| 65 70 6c 61 63 65 73 20 | 74 68 65 20 62 69 74 20 |eplaces |the bit |
|00004bb0| 6d 61 73 6b 73 20 77 69 | 74 68 0d 6d 61 73 6b 73 |masks wi|th.masks|
|00004bc0| 20 6f 66 20 74 68 6f 73 | 65 20 64 65 73 63 72 69 | of thos|e descri|
|00004bd0| 70 74 6f 72 73 0d 77 68 | 69 63 68 20 61 72 65 20 |ptors.wh|ich are |
|00004be0| 72 65 61 64 79 20 61 6e | 64 20 72 65 74 75 72 6e |ready an|d return|
|00004bf0| 73 20 74 68 65 20 74 6f | 74 61 6c 20 6e 75 6d 62 |s the to|tal numb|
|00004c00| 65 72 20 6f 66 20 72 65 | 61 64 79 20 64 65 73 63 |er of re|ady desc|
|00004c10| 72 69 70 74 6f 72 73 2e | 20 5c 43 44 7b 7d 24 25 |riptors.| \CD{}$%|
|00004c20| 0d 5c 5c 7b 74 69 6d 65 | 6f 75 74 7d 24 5c 44 43 |.\\{time|out}$\DC|
|00004c30| 7b 7d 2c 20 69 66 0d 6e | 6f 74 20 5c 43 44 7b 7d |{}, if.n|ot \CD{}|
|00004c40| 24 5c 5c 7b 4e 55 4c 4c | 7d 24 5c 44 43 7b 7d 2c |$\\{NULL|}$\DC{},|
|00004c50| 20 73 70 65 63 69 66 69 | 65 73 20 74 68 65 20 6d | specifi|es the m|
|00004c60| 61 78 69 6d 75 6d 20 74 | 69 6d 65 20 74 6f 20 77 |aximum t|ime to w|
|00004c70| 61 69 74 20 66 6f 72 20 | 61 20 64 65 73 63 72 69 |ait for |a descri|
|00004c80| 70 74 6f 72 0d 74 6f 20 | 62 65 63 6f 6d 65 20 72 |ptor.to |become r|
|00004c90| 65 61 64 79 2e 20 49 66 | 0d 5c 43 44 7b 7d 24 5c |eady. If|.\CD{}$\|
|00004ca0| 5c 7b 74 69 6d 65 6f 75 | 74 7d 24 5c 44 43 7b 7d |\{timeou|t}$\DC{}|
|00004cb0| 20 69 73 20 5c 43 44 7b | 7d 24 5c 5c 7b 4e 55 4c | is \CD{|}$\\{NUL|
|00004cc0| 4c 7d 24 5c 44 43 7b 7d | 2c 20 5c 43 44 7b 7d 24 |L}$\DC{}|, \CD{}$|
|00004cd0| 5c 5c 7b 73 65 6c 65 63 | 74 7d 28 5c 2c 29 24 5c |\\{selec|t}(\,)$\|
|00004ce0| 44 43 7b 7d 0d 77 61 69 | 74 73 20 69 6e 64 65 66 |DC{}.wai|ts indef|
|00004cf0| 69 6e 69 74 65 6c 79 2e | 20 54 6f 20 64 6f 20 61 |initely.| To do a|
|00004d00| 20 70 6f 6c 6c 2c 20 70 | 61 73 73 20 61 20 70 6f | poll, p|ass a po|
|00004d10| 69 6e 74 65 72 20 74 6f | 0d 61 20 7a 65 72 6f 20 |inter to|.a zero |
|00004d20| 5c 43 44 7b 7d 24 5c 5c | 7b 74 69 6d 65 76 61 6c |\CD{}$\\|{timeval|
|00004d30| 7d 24 5c 44 43 7b 7d 20 | 76 61 6c 75 65 20 69 6e |}$\DC{} |value in|
|00004d40| 20 5c 43 44 7b 7d 24 5c | 5c 7b 74 69 6d 65 6f 75 | \CD{}$\|\{timeou|
|00004d50| 74 7d 24 5c 44 43 7b 7d | 2e 20 41 6e 79 20 6f 66 |t}$\DC{}|. Any of|
|00004d60| 20 5c 43 44 7b 7d 24 25 | 0d 5c 5c 7b 72 65 61 64 | \CD{}$%|.\\{read|
|00004d70| 66 64 73 7d 24 5c 44 43 | 7b 7d 2c 20 5c 43 44 7b |fds}$\DC|{}, \CD{|
|00004d80| 7d 24 5c 5c 7b 77 72 69 | 74 65 66 64 73 7d 24 5c |}$\\{wri|tefds}$\|
|00004d90| 44 43 7b 7d 2c 20 6f 72 | 20 5c 43 44 7b 7d 24 5c |DC{}, or| \CD{}$\|
|00004da0| 5c 7b 65 78 63 65 70 74 | 66 64 73 7d 24 5c 44 43 |\{except|fds}$\DC|
|00004db0| 7b 7d 0d 6d 61 79 20 62 | 65 20 67 69 76 65 6e 20 |{}.may b|e given |
|00004dc0| 61 73 20 5c 43 44 7b 7d | 24 5c 5c 7b 4e 55 4c 4c |as \CD{}|$\\{NULL|
|00004dd0| 7d 24 5c 44 43 7b 7d 20 | 69 66 20 6e 6f 20 64 65 |}$\DC{} |if no de|
|00004de0| 73 63 72 69 70 74 6f 72 | 73 20 61 72 65 20 6f 66 |scriptor|s are of|
|00004df0| 20 69 6e 74 65 72 65 73 | 74 2e 0d 5c 6d 65 64 73 | interes|t..\meds|
|00004e00| 6b 69 70 0d 45 72 72 6f | 72 20 63 6f 64 65 73 3a |kip.Erro|r codes:|
|00004e10| 0d 5c 6d 65 64 73 6b 69 | 70 5c 70 6c 61 69 6e 74 |.\medski|p\plaint|
|00004e20| 77 6f 63 6f 6c 7b 0d 5c | 43 44 7b 7d 24 5c 5c 7b |wocol{.\|CD{}$\\{|
|00004e30| 45 42 41 44 46 7d 24 5c | 44 43 7b 7d 26 4f 6e 65 |EBADF}$\|DC{}&One|
|00004e40| 20 6f 66 20 74 68 65 20 | 62 69 74 20 6d 61 73 6b | of the |bit mask|
|00004e50| 73 20 73 70 65 63 69 66 | 69 65 64 20 61 6e 20 69 |s specif|ied an i|
|00004e60| 6e 76 61 6c 69 64 20 64 | 65 73 63 72 69 70 74 6f |nvalid d|escripto|
|00004e70| 72 2e 5c 63 72 0d 7d 0d | 0d 5c 66 69 0d 0d 5c 4d |r.\cr.}.|.\fi..\M|
|00004e80| 33 35 2e 20 54 68 65 20 | 64 65 73 63 72 69 70 74 |35. The |descript|
|00004e90| 6f 72 20 62 69 74 20 6d | 61 73 6b 73 20 63 61 6e |or bit m|asks can|
|00004ea0| 20 62 65 20 6d 61 6e 69 | 70 75 6c 61 74 65 64 20 | be mani|pulated |
|00004eb0| 77 69 74 68 20 74 68 65 | 20 66 6f 6c 6c 6f 77 69 |with the| followi|
|00004ec0| 6e 67 20 6d 61 63 72 6f | 73 3a 0d 0d 5c 59 5c 50 |ng macro|s:..\Y\P|
|00004ed0| 20 24 5c 5c 7b 46 44 5c | 5f 5a 45 52 4f 7d 28 5c | $\\{FD\|_ZERO}(\|
|00004ee0| 5c 7b 66 64 73 7d 29 3b | 24 5c 35 0d 5c 43 7b 20 |\{fds});|$\5.\C{ |
|00004ef0| 43 6c 65 61 72 20 61 6c | 6c 20 62 69 74 73 20 69 |Clear al|l bits i|
|00004f00| 6e 20 24 7b 7b 2a 7d 7d | 5c 5c 7b 66 64 73 7d 24 |n ${{*}}|\\{fds}$|
|00004f10| 20 7d 5c 36 0d 24 5c 5c | 7b 46 44 5c 5f 53 45 54 | }\6.$\\|{FD\_SET|
|00004f20| 7d 28 5c 7c 6e 2c 5c 3b | 24 5c 33 39 24 5c 5c 7b |}(\|n,\;|$\39$\\{|
|00004f30| 66 64 73 7d 29 3b 24 5c | 35 0d 5c 43 7b 20 53 65 |fds});$\|5.\C{ Se|
|00004f40| 74 20 62 69 74 20 24 5c | 7c 6e 24 20 69 6e 20 24 |t bit $\||n$ in $|
|00004f50| 7b 7b 2a 7d 7d 5c 5c 7b | 66 64 73 7d 24 20 7d 5c |{{*}}\\{|fds}$ }\|
|00004f60| 36 0d 24 5c 5c 7b 46 44 | 5c 5f 43 4c 52 7d 28 5c |6.$\\{FD|\_CLR}(\|
|00004f70| 7c 6e 2c 5c 3b 24 5c 33 | 39 24 5c 5c 7b 66 64 73 ||n,\;$\3|9$\\{fds|
|00004f80| 7d 29 3b 24 5c 35 0d 5c | 43 7b 20 43 6c 65 61 72 |});$\5.\|C{ Clear|
|00004f90| 20 62 69 74 20 24 5c 7c | 6e 24 20 69 6e 20 24 7b | bit $\||n$ in ${|
|00004fa0| 7b 2a 7d 7d 5c 5c 7b 66 | 64 73 7d 24 20 7d 5c 36 |{*}}\\{f|ds}$ }\6|
|00004fb0| 0d 24 5c 5c 7b 46 44 5c | 5f 49 53 53 45 54 7d 28 |.$\\{FD\|_ISSET}(|
|00004fc0| 5c 7c 6e 2c 5c 3b 24 5c | 33 39 24 5c 5c 7b 66 64 |\|n,\;$\|39$\\{fd|
|00004fd0| 73 7d 29 3b 24 5c 35 0d | 5c 43 7b 20 52 65 74 75 |s});$\5.|\C{ Retu|
|00004fe0| 72 6e 20 24 5c 4f 7b 31 | 7d 24 20 69 66 20 62 69 |rn $\O{1|}$ if bi|
|00004ff0| 74 20 24 5c 7c 6e 24 20 | 69 6e 20 24 7b 7b 2a 7d |t $\|n$ |in ${{*}|
|00005000| 7d 5c 5c 7b 66 64 73 7d | 24 20 69 73 20 73 65 74 |}\\{fds}|$ is set|
|00005010| 2c 20 65 6c 73 65 20 24 | 5c 4f 7b 30 7d 24 20 7d |, else $|\O{0}$ }|
|00005020| 5c 70 61 72 0d 5c 66 69 | 0d 0d 5c 4e 33 36 2e 20 |\par.\fi|..\N36. |
|00005030| 32 20 47 65 74 74 69 6e | 67 20 61 6e 64 20 63 68 |2 Gettin|g and ch|
|00005040| 61 6e 67 69 6e 67 20 70 | 72 6f 70 65 72 74 69 65 |anging p|ropertie|
|00005050| 73 20 6f 66 20 73 6f 63 | 6b 65 74 73 2e 20 59 6f |s of soc|kets. Yo|
|00005060| 75 20 63 61 6e 20 6f 62 | 74 61 69 6e 20 74 68 65 |u can ob|tain the|
|00005070| 20 61 64 64 72 65 73 73 | 0d 6f 66 20 61 0d 73 6f | address|.of a.so|
|00005080| 63 6b 65 74 20 61 6e 64 | 20 74 68 65 20 73 6f 63 |cket and| the soc|
|00005090| 6b 65 74 20 69 74 20 69 | 73 20 63 6f 6e 6e 65 63 |ket it i|s connec|
|000050a0| 74 65 64 20 74 6f 20 62 | 79 20 63 61 6c 6c 69 6e |ted to b|y callin|
|000050b0| 67 20 5c 43 44 7b 7d 24 | 5c 5c 7b 67 65 74 73 6f |g \CD{}$|\\{getso|
|000050c0| 63 6b 6e 61 6d 65 7d 28 | 5c 2c 29 24 25 0d 5c 44 |ckname}(|\,)$%.\D|
|000050d0| 43 7b 7d 20 61 6e 64 0d | 5c 43 44 7b 7d 24 5c 5c |C{} and.|\CD{}$\\|
|000050e0| 7b 67 65 74 70 65 65 72 | 6e 61 6d 65 7d 28 5c 2c |{getpeer|name}(\,|
|000050f0| 29 24 5c 44 43 7b 7d 20 | 72 65 73 70 65 63 74 69 |)$\DC{} |respecti|
|00005100| 76 65 6c 79 2e 20 59 6f | 75 20 63 61 6e 20 71 75 |vely. Yo|u can qu|
|00005110| 65 72 79 20 61 6e 64 20 | 6d 61 6e 69 70 75 6c 61 |ery and |manipula|
|00005120| 74 65 0d 6f 74 68 65 72 | 20 70 72 6f 70 65 72 74 |te.other| propert|
|00005130| 69 65 73 20 6f 66 20 61 | 0d 73 6f 63 6b 65 74 20 |ies of a|.socket |
|00005140| 62 79 20 63 61 6c 6c 69 | 6e 67 20 5c 43 44 7b 7d |by calli|ng \CD{}|
|00005150| 24 5c 5c 7b 69 6f 63 74 | 6c 7d 28 5c 2c 29 24 5c |$\\{ioct|l}(\,)$\|
|00005160| 44 43 7b 7d 2c 20 5c 43 | 44 7b 7d 24 5c 5c 7b 66 |DC{}, \C|D{}$\\{f|
|00005170| 63 6e 74 6c 7d 28 5c 2c | 29 24 5c 44 43 7b 7d 2c |cntl}(\,|)$\DC{},|
|00005180| 20 5c 43 44 7b 7d 24 25 | 0d 5c 5c 7b 67 65 74 73 | \CD{}$%|.\\{gets|
|00005190| 6f 63 6b 6f 70 74 7d 28 | 5c 2c 29 24 5c 44 43 7b |ockopt}(|\,)$\DC{|
|000051a0| 7d 2c 20 61 6e 64 20 5c | 43 44 7b 7d 24 5c 5c 7b |}, and \|CD{}$\\{|
|000051b0| 73 65 74 73 6f 63 6b 6f | 70 74 7d 28 5c 2c 29 24 |setsocko|pt}(\,)$|
|000051c0| 5c 44 43 7b 7d 2e 20 59 | 6f 75 0d 63 61 6e 20 63 |\DC{}. Y|ou.can c|
|000051d0| 72 65 61 74 65 20 61 64 | 64 69 74 69 6f 6e 61 6c |reate ad|ditional|
|000051e0| 20 64 65 73 63 72 69 70 | 74 6f 72 73 20 66 6f 72 | descrip|tors for|
|000051f0| 20 61 20 73 6f 63 6b 65 | 74 20 62 79 20 63 61 6c | a socke|t by cal|
|00005200| 6c 69 6e 67 20 5c 43 44 | 7b 7d 24 5c 5c 7b 64 75 |ling \CD|{}$\\{du|
|00005210| 70 7d 28 5c 2c 29 24 25 | 0d 5c 44 43 7b 7d 20 6f |p}(\,)$%|.\DC{} o|
|00005220| 72 20 5c 43 44 7b 7d 24 | 5c 5c 7b 64 75 70 32 7d |r \CD{}$|\\{dup2}|
|00005230| 28 5c 2c 29 24 5c 44 43 | 7b 7d 2e 0d 0d 5c 66 69 |(\,)$\DC|{}...\fi|
|00005240| 0d 0d 5c 4d 33 37 2e 20 | 5c 43 44 7b 7d 24 5c 26 |..\M37. |\CD{}$\&|
|00005250| 7b 69 6e 74 7d 5c 20 5c | 5c 7b 67 65 74 73 6f 63 |{int}\ \|\{getsoc|
|00005260| 6b 6e 61 6d 65 7d 28 5c | 26 7b 69 6e 74 7d 5c 20 |kname}(\|&{int}\ |
|00005270| 5c 7c 73 2c 5c 3b 5c 26 | 7b 76 6f 69 64 7d 5c 20 |\|s,\;\&|{void}\ |
|00005280| 7b 2a 7d 5c 5c 7b 6e 61 | 6d 65 7d 2c 5c 3b 25 0d |{*}\\{na|me},\;%.|
|00005290| 5c 26 7b 69 6e 74 7d 5c | 20 7b 2a 7d 5c 5c 7b 6e |\&{int}\| {*}\\{n|
|000052a0| 61 6d 65 6c 65 6e 7d 29 | 24 5c 44 43 7b 7d 20 72 |amelen})|$\DC{} r|
|000052b0| 65 74 75 72 6e 73 20 69 | 6e 20 5c 43 44 7b 7d 24 |eturns i|n \CD{}$|
|000052c0| 7b 7b 2a 7d 7d 5c 5c 7b | 6e 61 6d 65 7d 24 5c 44 |{{*}}\\{|name}$\D|
|000052d0| 43 7b 7d 20 74 68 65 20 | 61 64 64 72 65 73 73 0d |C{} the |address.|
|000052e0| 74 68 65 20 73 6f 63 6b | 65 74 20 69 73 20 62 6f |the sock|et is bo|
|000052f0| 75 6e 64 20 74 6f 2e 20 | 5c 43 44 7b 7d 24 7b 7b |und to. |\CD{}${{|
|00005300| 2a 7d 7d 5c 5c 7b 6e 61 | 6d 65 6c 65 6e 7d 24 5c |*}}\\{na|melen}$\|
|00005310| 44 43 7b 7d 20 73 68 6f | 75 6c 64 20 62 65 20 73 |DC{} sho|uld be s|
|00005320| 65 74 20 74 6f 20 74 68 | 65 0d 6d 61 78 69 6d 75 |et to th|e.maximu|
|00005330| 6d 20 6c 65 6e 67 74 68 | 20 6f 66 20 5c 43 44 7b |m length| of \CD{|
|00005340| 7d 24 7b 7b 2a 7d 7d 5c | 5c 7b 6e 61 6d 65 7d 24 |}${{*}}\|\{name}$|
|00005350| 5c 44 43 7b 7d 20 61 6e | 64 0d 77 69 6c 6c 20 62 |\DC{} an|d.will b|
|00005360| 65 20 73 65 74 20 62 79 | 20 5c 43 44 7b 7d 24 5c |e set by| \CD{}$\|
|00005370| 5c 7b 67 65 74 73 6f 63 | 6b 6e 61 6d 65 7d 28 5c |\{getsoc|kname}(\|
|00005380| 2c 29 24 5c 44 43 7b 7d | 20 74 6f 20 74 68 65 20 |,)$\DC{}| to the |
|00005390| 61 63 74 75 61 6c 20 6c | 65 6e 67 74 68 20 6f 66 |actual l|ength of|
|000053a0| 20 74 68 65 0d 6e 61 6d | 65 2e 0d 0d 5c 66 69 0d | the.nam|e...\fi.|
|000053b0| 0d 5c 4d 33 38 2e 20 5c | 43 44 7b 7d 24 5c 26 7b |.\M38. \|CD{}$\&{|
|000053c0| 69 6e 74 7d 5c 20 5c 5c | 7b 67 65 74 70 65 65 72 |int}\ \\|{getpeer|
|000053d0| 6e 61 6d 65 7d 28 5c 26 | 7b 69 6e 74 7d 5c 20 5c |name}(\&|{int}\ \|
|000053e0| 7c 73 2c 5c 3b 5c 26 7b | 76 6f 69 64 7d 5c 20 7b ||s,\;\&{|void}\ {|
|000053f0| 2a 7d 5c 5c 7b 6e 61 6d | 65 7d 2c 5c 3b 25 0d 5c |*}\\{nam|e},\;%.\|
|00005400| 26 7b 69 6e 74 7d 5c 20 | 7b 2a 7d 5c 5c 7b 6e 61 |&{int}\ |{*}\\{na|
|00005410| 6d 65 6c 65 6e 7d 29 24 | 5c 44 43 7b 7d 20 72 65 |melen})$|\DC{} re|
|00005420| 74 75 72 6e 73 20 69 6e | 20 5c 43 44 7b 7d 24 7b |turns in| \CD{}${|
|00005430| 7b 2a 7d 7d 5c 5c 7b 6e | 61 6d 65 7d 24 5c 44 43 |{*}}\\{n|ame}$\DC|
|00005440| 7b 7d 20 74 68 65 20 61 | 64 64 72 65 73 73 0d 6f |{} the a|ddress.o|
|00005450| 66 20 74 68 65 20 73 6f | 63 6b 65 74 20 74 68 61 |f the so|cket tha|
|00005460| 74 20 74 68 69 73 20 73 | 6f 63 6b 65 74 20 69 73 |t this s|ocket is|
|00005470| 20 63 6f 6e 6e 65 63 74 | 65 64 20 74 6f 2e 20 5c | connect|ed to. \|
|00005480| 43 44 7b 7d 24 7b 7b 2a | 7d 7d 5c 5c 7b 6e 61 6d |CD{}${{*|}}\\{nam|
|00005490| 65 6c 65 6e 7d 24 5c 44 | 43 7b 7d 0d 73 68 6f 75 |elen}$\D|C{}.shou|
|000054a0| 6c 64 20 62 65 20 73 65 | 74 20 74 6f 20 74 68 65 |ld be se|t to the|
|000054b0| 0d 6d 61 78 69 6d 75 6d | 20 6c 65 6e 67 74 68 20 |.maximum| length |
|000054c0| 6f 66 20 5c 43 44 7b 7d | 24 7b 7b 2a 7d 7d 5c 5c |of \CD{}|${{*}}\\|
|000054d0| 7b 6e 61 6d 65 7d 24 5c | 44 43 7b 7d 20 61 6e 64 |{name}$\|DC{} and|
|000054e0| 20 77 69 6c 6c 20 62 65 | 20 73 65 74 20 62 79 20 | will be| set by |
|000054f0| 5c 43 44 7b 7d 24 25 0d | 5c 5c 7b 67 65 74 70 65 |\CD{}$%.|\\{getpe|
|00005500| 65 72 6e 61 6d 65 7d 28 | 5c 2c 29 24 5c 44 43 7b |ername}(|\,)$\DC{|
|00005510| 7d 20 74 6f 20 74 68 65 | 20 61 63 74 75 61 6c 20 |} to the| actual |
|00005520| 6c 65 6e 67 74 68 0d 6f | 66 20 74 68 65 20 6e 61 |length.o|f the na|
|00005530| 6d 65 2e 0d 0d 5c 66 69 | 0d 0d 5c 4d 33 39 2e 20 |me...\fi|..\M39. |
|00005540| 5c 43 44 7b 7d 24 5c 26 | 7b 69 6e 74 7d 5c 20 5c |\CD{}$\&|{int}\ \|
|00005550| 5c 7b 69 6f 63 74 6c 7d | 28 5c 26 7b 69 6e 74 7d |\{ioctl}|(\&{int}|
|00005560| 5c 20 5c 7c 64 2c 5c 3b | 5c 26 7b 75 6e 73 69 67 |\ \|d,\;|\&{unsig|
|00005570| 6e 65 64 7d 5c 20 5c 26 | 7b 69 6e 74 7d 5c 20 25 |ned}\ \&|{int}\ %|
|00005580| 0d 5c 5c 7b 72 65 71 75 | 65 73 74 7d 2c 5c 3b 5c |.\\{requ|est},\;\|
|00005590| 26 7b 6c 6f 6e 67 7d 5c | 20 7b 2a 7d 5c 5c 7b 61 |&{long}\| {*}\\{a|
|000055a0| 72 67 70 7d 29 24 5c 44 | 43 7b 7d 20 70 65 72 66 |rgp})$\D|C{} perf|
|000055b0| 6f 72 6d 73 20 76 61 72 | 69 6f 75 73 20 6f 70 65 |orms var|ious ope|
|000055c0| 72 61 74 69 6f 6e 73 0d | 6f 6e 20 74 68 65 20 73 |rations.|on the s|
|000055d0| 6f 63 6b 65 74 2c 20 64 | 65 70 65 6e 64 69 6e 67 |ocket, d|epending|
|000055e0| 20 6f 6e 20 74 68 65 20 | 5c 43 44 7b 7d 24 5c 5c | on the |\CD{}$\\|
|000055f0| 7b 72 65 71 75 65 73 74 | 7d 24 5c 44 43 7b 7d 2e |{request|}$\DC{}.|
|00005600| 20 54 68 65 20 66 6f 6c | 6c 6f 77 69 6e 67 20 63 | The fol|lowing c|
|00005610| 6f 64 65 73 0d 61 72 65 | 20 76 61 6c 69 64 20 66 |odes.are| valid f|
|00005620| 6f 72 20 61 6c 6c 0d 73 | 6f 63 6b 65 74 20 66 61 |or all.s|ocket fa|
|00005630| 6d 69 6c 69 65 73 3a 0d | 5c 6d 65 64 73 6b 69 70 |milies:.|\medskip|
|00005640| 5c 70 6c 61 69 6e 74 77 | 6f 63 6f 6c 7b 0d 5c 43 |\plaintw|ocol{.\C|
|00005650| 44 7b 7d 24 5c 5c 7b 46 | 49 4f 4e 42 49 4f 7d 24 |D{}$\\{F|IONBIO}$|
|00005660| 5c 44 43 7b 7d 26 4d 61 | 6b 65 20 74 68 65 20 73 |\DC{}&Ma|ke the s|
|00005670| 6f 63 6b 65 74 20 62 6c | 6f 63 6b 69 6e 67 20 69 |ocket bl|ocking i|
|00005680| 66 20 74 68 65 20 5c 43 | 44 7b 7d 24 5c 26 7b 6c |f the \C|D{}$\&{l|
|00005690| 6f 6e 67 7d 24 5c 44 43 | 7b 7d 0d 70 6f 69 6e 74 |ong}$\DC|{}.point|
|000056a0| 65 64 20 74 6f 20 62 79 | 20 61 72 67 70 20 69 73 |ed to by| argp is|
|000056b0| 20 5c 43 44 7b 7d 24 5c | 4f 7b 30 7d 24 5c 44 43 | \CD{}$\|O{0}$\DC|
|000056c0| 7b 7d 2c 20 65 6c 73 65 | 0d 6d 61 6b 65 20 69 74 |{}, else|.make it|
|000056d0| 20 6e 6f 6e 62 6c 6f 63 | 6b 69 6e 67 2e 5c 63 72 | nonbloc|king.\cr|
|000056e0| 0d 5c 43 44 7b 7d 24 5c | 5c 7b 46 49 4f 4e 52 45 |.\CD{}$\|\{FIONRE|
|000056f0| 41 44 7d 24 5c 44 43 7b | 7d 26 53 65 74 20 5c 43 |AD}$\DC{|}&Set \C|
|00005700| 44 7b 7d 24 7b 7b 2a 7d | 7d 5c 5c 7b 61 72 67 70 |D{}${{*}|}\\{argp|
|00005710| 7d 24 5c 44 43 7b 7d 20 | 74 6f 20 74 68 65 20 6e |}$\DC{} |to the n|
|00005720| 75 6d 62 65 72 20 6f 66 | 20 62 79 74 65 73 0d 77 |umber of| bytes.w|
|00005730| 61 69 74 69 6e 67 20 74 | 6f 20 62 65 20 72 65 61 |aiting t|o be rea|
|00005740| 64 2e 5c 63 72 0d 7d 0d | 5c 6d 65 64 73 6b 69 70 |d.\cr.}.|\medskip|
|00005750| 0d 45 72 72 6f 72 20 63 | 6f 64 65 73 3a 0d 5c 6d |.Error c|odes:.\m|
|00005760| 65 64 73 6b 69 70 5c 70 | 6c 61 69 6e 74 77 6f 63 |edskip\p|laintwoc|
|00005770| 6f 6c 7b 0d 5c 43 44 7b | 7d 24 5c 5c 7b 45 4f 50 |ol{.\CD{|}$\\{EOP|
|00005780| 4e 4f 54 53 55 50 50 7d | 24 5c 44 43 7b 7d 26 54 |NOTSUPP}|$\DC{}&T|
|00005790| 68 65 20 6f 70 65 72 61 | 74 69 6f 6e 20 79 6f 75 |he opera|tion you|
|000057a0| 20 72 65 71 75 65 73 74 | 65 64 20 77 69 74 68 20 | request|ed with |
|000057b0| 5c 43 44 7b 7d 24 5c 5c | 7b 72 65 71 75 65 73 74 |\CD{}$\\|{request|
|000057c0| 7d 24 25 0d 5c 44 43 7b | 7d 20 69 73 20 6e 6f 74 |}$%.\DC{|} is not|
|000057d0| 20 73 75 70 70 6f 72 74 | 65 64 20 62 79 20 74 68 | support|ed by th|
|000057e0| 69 73 0d 73 6f 63 6b 65 | 74 20 66 61 6d 69 6c 79 |is.socke|t family|
|000057f0| 2e 5c 63 72 0d 7d 0d 0d | 5c 66 69 0d 0d 5c 4d 34 |.\cr.}..|\fi..\M4|
|00005800| 30 2e 20 5c 43 44 7b 7d | 24 5c 26 7b 69 6e 74 7d |0. \CD{}|$\&{int}|
|00005810| 5c 20 5c 5c 7b 66 63 6e | 74 6c 7d 28 5c 26 7b 69 |\ \\{fcn|tl}(\&{i|
|00005820| 6e 74 7d 5c 20 5c 7c 73 | 2c 5c 3b 5c 26 7b 75 6e |nt}\ \|s|,\;\&{un|
|00005830| 73 69 67 6e 65 64 7d 5c | 20 5c 26 7b 69 6e 74 7d |signed}\| \&{int}|
|00005840| 5c 20 5c 5c 7b 63 6d 64 | 7d 2c 5c 3b 25 0d 5c 26 |\ \\{cmd|},\;%.\&|
|00005850| 7b 69 6e 74 7d 5c 20 5c | 5c 7b 61 72 67 7d 29 24 |{int}\ \|\{arg})$|
|00005860| 5c 44 43 7b 7d 20 70 72 | 6f 76 69 64 65 73 20 61 |\DC{} pr|ovides a|
|00005870| 64 64 69 74 69 6f 6e 61 | 6c 20 63 6f 6e 74 72 6f |dditiona|l contro|
|00005880| 6c 20 6f 76 65 72 20 61 | 0d 73 6f 63 6b 65 74 2e |l over a|.socket.|
|00005890| 20 54 68 65 20 66 6f 6c | 6c 6f 77 69 6e 67 20 76 | The fol|lowing v|
|000058a0| 61 6c 75 65 73 20 6f 66 | 20 5c 43 44 7b 7d 24 5c |alues of| \CD{}$\|
|000058b0| 5c 7b 63 6d 64 7d 24 5c | 44 43 7b 7d 20 61 72 65 |\{cmd}$\|DC{} are|
|000058c0| 20 64 65 66 69 6e 65 64 | 20 66 6f 72 20 61 6c 6c | defined| for all|
|000058d0| 20 73 6f 63 6b 65 74 0d | 66 61 6d 69 6c 69 65 73 | socket.|families|
|000058e0| 3a 0d 5c 6d 65 64 73 6b | 69 70 5c 70 6c 61 69 6e |:.\medsk|ip\plain|
|000058f0| 74 77 6f 63 6f 6c 7b 0d | 5c 43 44 7b 7d 24 5c 5c |twocol{.|\CD{}$\\|
|00005900| 7b 46 5c 5f 44 55 50 46 | 44 7d 24 5c 44 43 7b 7d |{F\_DUPF|D}$\DC{}|
|00005910| 26 52 65 74 75 72 6e 20 | 61 20 6e 65 77 20 64 65 |&Return |a new de|
|00005920| 73 63 72 69 70 74 6f 72 | 20 24 5c 67 65 24 20 5c |scriptor| $\ge$ \|
|00005930| 43 44 7b 7d 24 5c 5c 7b | 61 72 67 7d 24 5c 44 43 |CD{}$\\{|arg}$\DC|
|00005940| 7b 7d 0d 77 68 69 63 68 | 20 72 65 66 65 72 73 20 |{}.which| refers |
|00005950| 74 6f 20 74 68 65 20 73 | 61 6d 65 20 73 6f 63 6b |to the s|ame sock|
|00005960| 65 74 2e 5c 63 72 0d 5c | 43 44 7b 7d 24 5c 5c 7b |et.\cr.\|CD{}$\\{|
|00005970| 46 5c 5f 47 45 54 46 4c | 7d 24 5c 44 43 7b 7d 26 |F\_GETFL|}$\DC{}&|
|00005980| 52 65 74 75 72 6e 20 64 | 65 73 63 72 69 70 74 6f |Return d|escripto|
|00005990| 72 20 73 74 61 74 75 73 | 20 66 6c 61 67 73 2e 5c |r status| flags.\|
|000059a0| 63 72 0d 5c 43 44 7b 7d | 24 5c 5c 7b 46 5c 5f 53 |cr.\CD{}|$\\{F\_S|
|000059b0| 45 54 46 4c 7d 24 5c 44 | 43 7b 7d 26 53 65 74 20 |ETFL}$\D|C{}&Set |
|000059c0| 64 65 73 63 72 69 70 74 | 6f 72 20 73 74 61 74 75 |descript|or statu|
|000059d0| 73 20 66 6c 61 67 73 20 | 74 6f 20 5c 43 44 7b 7d |s flags |to \CD{}|
|000059e0| 24 5c 5c 7b 61 72 67 7d | 24 5c 44 43 7b 7d 2e 5c |$\\{arg}|$\DC{}.\|
|000059f0| 63 72 0d 7d 0d 5c 6d 65 | 64 73 6b 69 70 0d 54 68 |cr.}.\me|dskip.Th|
|00005a00| 65 20 6f 6e 6c 79 20 73 | 74 61 74 75 73 20 66 6c |e only s|tatus fl|
|00005a10| 61 67 20 69 6d 70 6c 65 | 6d 65 6e 74 65 64 20 69 |ag imple|mented i|
|00005a20| 73 20 5c 43 44 7b 7d 24 | 5c 5c 7b 46 4e 44 45 4c |s \CD{}$|\\{FNDEL|
|00005a30| 41 59 7d 24 5c 44 43 7b | 7d 20 77 68 69 63 68 20 |AY}$\DC{|} which |
|00005a40| 69 73 20 74 72 75 65 20 | 69 66 0d 74 68 65 20 73 |is true |if.the s|
|00005a50| 6f 63 6b 65 74 20 69 73 | 0d 6e 6f 6e 62 6c 6f 63 |ocket is|.nonbloc|
|00005a60| 6b 69 6e 67 2e 0d 5c 6d | 65 64 73 6b 69 70 0d 45 |king..\m|edskip.E|
|00005a70| 72 72 6f 72 20 63 6f 64 | 65 73 3a 0d 5c 6d 65 64 |rror cod|es:.\med|
|00005a80| 73 6b 69 70 5c 70 6c 61 | 69 6e 74 77 6f 63 6f 6c |skip\pla|intwocol|
|00005a90| 7b 0d 5c 43 44 7b 7d 24 | 5c 5c 7b 45 4f 50 4e 4f |{.\CD{}$|\\{EOPNO|
|00005aa0| 54 53 55 50 50 7d 24 5c | 44 43 7b 7d 26 54 68 65 |TSUPP}$\|DC{}&The|
|00005ab0| 20 6f 70 65 72 61 74 69 | 6f 6e 20 79 6f 75 20 72 | operati|on you r|
|00005ac0| 65 71 75 65 73 74 65 64 | 20 77 69 74 68 20 5c 43 |equested| with \C|
|00005ad0| 44 7b 7d 24 5c 5c 7b 63 | 6d 64 7d 24 5c 44 43 7b |D{}$\\{c|md}$\DC{|
|00005ae0| 7d 0d 69 73 20 6e 6f 74 | 20 73 75 70 70 6f 72 74 |}.is not| support|
|00005af0| 65 64 20 62 79 20 74 68 | 69 73 0d 73 6f 63 6b 65 |ed by th|is.socke|
|00005b00| 74 20 66 61 6d 69 6c 79 | 2e 5c 63 72 0d 7d 0d 0d |t family|.\cr.}..|
|00005b10| 5c 66 69 0d 0d 5c 4d 34 | 31 2e 20 5c 43 44 7b 7d |\fi..\M4|1. \CD{}|
|00005b20| 24 5c 26 7b 69 6e 74 7d | 5c 20 5c 5c 7b 67 65 74 |$\&{int}|\ \\{get|
|00005b30| 73 6f 63 6b 6f 70 74 7d | 28 5c 26 7b 69 6e 74 7d |sockopt}|(\&{int}|
|00005b40| 5c 20 5c 7c 73 2c 5c 3b | 5c 26 7b 69 6e 74 7d 5c |\ \|s,\;|\&{int}\|
|00005b50| 20 5c 5c 7b 6c 65 76 65 | 6c 7d 2c 5c 3b 5c 26 7b | \\{leve|l},\;\&{|
|00005b60| 69 6e 74 7d 25 0d 5c 20 | 5c 5c 7b 6f 70 74 6e 61 |int}%.\ |\\{optna|
|00005b70| 6d 65 7d 2c 5c 3b 5c 26 | 7b 63 68 61 72 7d 5c 20 |me},\;\&|{char}\ |
|00005b80| 7b 2a 7d 5c 5c 7b 6f 70 | 74 76 61 6c 7d 2c 5c 3b |{*}\\{op|tval},\;|
|00005b90| 5c 26 7b 69 6e 74 7d 5c | 20 7b 2a 7d 5c 5c 7b 6f |\&{int}\| {*}\\{o|
|00005ba0| 70 74 6c 65 6e 7d 29 24 | 5c 44 43 7b 7d 20 69 73 |ptlen})$|\DC{} is|
|00005bb0| 0d 75 73 65 64 20 74 6f | 20 72 65 71 75 65 73 74 |.used to| request|
|00005bc0| 20 69 6e 66 6f 72 6d 61 | 74 69 6f 6e 20 61 62 6f | informa|tion abo|
|00005bd0| 75 74 20 73 6f 63 6b 65 | 74 73 2e 20 49 74 20 69 |ut socke|ts. It i|
|00005be0| 73 20 6e 6f 74 20 69 6d | 70 6c 65 6d 65 6e 74 65 |s not im|plemente|
|00005bf0| 64 20 69 6e 20 5c 2e 7b | 47 55 53 49 7d 2e 0d 0d |d in \.{|GUSI}...|
|00005c00| 5c 66 69 0d 0d 5c 4d 34 | 32 2e 20 5c 43 44 7b 7d |\fi..\M4|2. \CD{}|
|00005c10| 24 5c 26 7b 69 6e 74 7d | 5c 20 5c 5c 7b 73 65 74 |$\&{int}|\ \\{set|
|00005c20| 73 6f 63 6b 6f 70 74 7d | 28 5c 26 7b 69 6e 74 7d |sockopt}|(\&{int}|
|00005c30| 5c 20 5c 7c 73 2c 5c 3b | 5c 26 7b 69 6e 74 7d 5c |\ \|s,\;|\&{int}\|
|00005c40| 20 5c 5c 7b 6c 65 76 65 | 6c 7d 2c 5c 3b 5c 26 7b | \\{leve|l},\;\&{|
|00005c50| 69 6e 74 7d 25 0d 5c 20 | 5c 5c 7b 6f 70 74 6e 61 |int}%.\ |\\{optna|
|00005c60| 6d 65 7d 2c 5c 3b 5c 26 | 7b 63 68 61 72 7d 5c 20 |me},\;\&|{char}\ |
|00005c70| 7b 2a 7d 5c 5c 7b 6f 70 | 74 76 61 6c 7d 2c 5c 3b |{*}\\{op|tval},\;|
|00005c80| 5c 26 7b 69 6e 74 7d 5c | 20 5c 5c 7b 6f 70 74 6c |\&{int}\| \\{optl|
|00005c90| 65 6e 7d 29 24 5c 44 43 | 7b 7d 20 69 73 20 75 73 |en})$\DC|{} is us|
|00005ca0| 65 64 0d 74 6f 20 73 65 | 74 20 6f 70 74 69 6f 6e |ed.to se|t option|
|00005cb0| 73 20 61 73 73 6f 63 69 | 61 74 65 64 20 77 69 74 |s associ|ated wit|
|00005cc0| 68 20 61 20 73 6f 63 6b | 65 74 2e 20 49 74 20 69 |h a sock|et. It i|
|00005cd0| 73 20 6e 6f 74 20 69 6d | 70 6c 65 6d 65 6e 74 65 |s not im|plemente|
|00005ce0| 64 20 69 6e 20 5c 2e 7b | 47 55 53 49 7d 2e 0d 0d |d in \.{|GUSI}...|
|00005cf0| 5c 66 69 0d 0d 5c 4d 34 | 33 2e 20 5c 43 44 7b 7d |\fi..\M4|3. \CD{}|
|00005d00| 24 5c 26 7b 69 6e 74 7d | 5c 20 5c 5c 7b 64 75 70 |$\&{int}|\ \\{dup|
|00005d10| 7d 28 5c 26 7b 69 6e 74 | 7d 5c 20 5c 5c 7b 66 64 |}(\&{int|}\ \\{fd|
|00005d20| 7d 29 24 5c 44 43 7b 7d | 20 72 65 74 75 72 6e 73 |})$\DC{}| returns|
|00005d30| 20 61 20 6e 65 77 20 64 | 65 73 63 72 69 70 74 6f | a new d|escripto|
|00005d40| 72 0d 72 65 66 65 72 72 | 69 6e 67 20 74 6f 20 74 |r.referr|ing to t|
|00005d50| 68 65 20 73 61 6d 65 20 | 73 6f 63 6b 65 74 20 61 |he same |socket a|
|00005d60| 73 20 5c 43 44 7b 7d 24 | 5c 5c 7b 66 64 7d 24 5c |s \CD{}$|\\{fd}$\|
|00005d70| 44 43 7b 7d 2e 0d 54 68 | 65 20 6f 6c 64 20 61 6e |DC{}..Th|e old an|
|00005d80| 64 20 6e 65 77 20 64 65 | 73 63 72 69 70 74 6f 72 |d new de|scriptor|
|00005d90| 73 20 61 72 65 20 69 6e | 64 69 73 74 69 6e 67 75 |s are in|distingu|
|00005da0| 69 73 68 69 62 6c 65 2e | 20 54 68 65 20 6e 65 77 |ishible.| The new|
|00005db0| 20 64 65 73 63 72 69 70 | 74 6f 72 20 77 69 6c 6c | descrip|tor will|
|00005dc0| 0d 61 6c 77 61 79 73 0d | 62 65 20 74 68 65 20 73 |.always.|be the s|
|00005dd0| 6d 61 6c 6c 65 73 74 20 | 66 72 65 65 20 64 65 73 |mallest |free des|
|00005de0| 63 72 69 70 74 6f 72 2e | 0d 0d 5c 66 69 0d 0d 5c |criptor.|..\fi..\|
|00005df0| 4d 34 34 2e 20 5c 43 44 | 7b 7d 24 5c 26 7b 69 6e |M44. \CD|{}$\&{in|
|00005e00| 74 7d 5c 20 5c 5c 7b 64 | 75 70 32 7d 28 5c 26 7b |t}\ \\{d|up2}(\&{|
|00005e10| 69 6e 74 7d 5c 20 5c 5c | 7b 6f 6c 64 66 64 7d 2c |int}\ \\|{oldfd},|
|00005e20| 5c 3b 5c 26 7b 69 6e 74 | 7d 5c 20 5c 5c 7b 6e 65 |\;\&{int|}\ \\{ne|
|00005e30| 77 66 64 7d 29 24 5c 44 | 43 7b 7d 0d 63 6c 6f 73 |wfd})$\D|C{}.clos|
|00005e40| 65 73 20 5c 43 44 7b 7d | 24 5c 5c 7b 6e 65 77 66 |es \CD{}|$\\{newf|
|00005e50| 64 7d 24 5c 44 43 7b 7d | 20 69 66 20 69 74 20 77 |d}$\DC{}| if it w|
|00005e60| 61 73 20 6f 70 65 6e 20 | 61 6e 64 20 6d 61 6b 65 |as open |and make|
|00005e70| 73 20 69 74 0d 61 20 64 | 75 70 6c 69 63 61 74 65 |s it.a d|uplicate|
|00005e80| 20 6f 66 20 5c 43 44 7b | 7d 24 5c 5c 7b 6f 6c 64 | of \CD{|}$\\{old|
|00005e90| 66 64 7d 24 5c 44 43 7b | 7d 2e 20 54 68 65 20 6f |fd}$\DC{|}. The o|
|00005ea0| 6c 64 20 61 6e 64 20 6e | 65 77 20 64 65 73 63 72 |ld and n|ew descr|
|00005eb0| 69 70 74 6f 72 73 20 61 | 72 65 0d 69 6e 64 69 73 |iptors a|re.indis|
|00005ec0| 74 69 6e 67 75 69 73 68 | 69 62 6c 65 2e 0d 0d 5c |tinguish|ible...\|
|00005ed0| 66 69 0d 0d 5c 4e 34 35 | 2e 20 3d 20 44 65 74 61 |fi..\N45|. = Deta|
|00005ee0| 69 6c 20 44 65 73 63 72 | 69 70 74 69 6f 6e 2e 20 |il Descr|iption. |
|00005ef0| 54 68 69 73 20 73 65 63 | 74 69 6f 6e 20 64 69 73 |This sec|tion dis|
|00005f00| 63 75 73 73 65 73 20 66 | 6f 72 20 65 61 63 68 20 |cusses f|or each |
|00005f10| 73 6f 63 6b 65 74 20 64 | 6f 6d 61 69 6e 20 74 68 |socket d|omain th|
|00005f20| 65 0d 72 6f 75 74 69 6e | 65 73 0d 74 68 61 74 20 |e.routin|es.that |
|00005f30| 62 65 68 61 76 65 20 64 | 69 66 66 65 72 65 6e 74 |behave d|ifferent|
|00005f40| 20 66 72 6f 6d 20 74 68 | 65 69 72 20 64 65 73 63 | from th|eir desc|
|00005f50| 72 69 70 74 69 6f 6e 20 | 69 6e 20 74 68 65 20 70 |ription |in the p|
|00005f60| 72 65 76 69 6f 75 73 20 | 73 65 63 74 69 6f 6e 20 |revious |section |
|00005f70| 61 6e 64 20 61 20 66 65 | 77 0d 63 61 6c 6c 73 0d |and a fe|w.calls.|
|00005f80| 73 70 65 63 69 66 69 63 | 20 74 6f 20 6f 6e 65 20 |specific| to one |
|00005f90| 64 6f 6d 61 69 6e 2e 0d | 0d 5c 66 69 0d 0d 5c 4e |domain..|.\fi..\N|
|00005fa0| 34 36 2e 20 32 20 46 69 | 6c 65 20 73 79 73 74 65 |46. 2 Fi|le syste|
|00005fb0| 6d 20 63 61 6c 6c 73 2e | 20 46 69 6c 65 73 20 61 |m calls.| Files a|
|00005fc0| 72 65 20 75 6e 6c 69 6b | 65 20 73 6f 63 6b 65 74 |re unlik|e socket|
|00005fd0| 73 20 69 6e 20 6d 61 6e | 79 20 72 65 73 70 65 63 |s in man|y respec|
|00005fe0| 74 73 3a 20 54 68 65 69 | 72 0d 6c 65 6e 67 74 68 |ts: Thei|r.length|
|00005ff0| 20 69 73 0d 6e 65 76 65 | 72 20 63 68 61 6e 67 65 | is.neve|r change|
|00006000| 64 20 62 79 20 6f 74 68 | 65 72 20 70 72 6f 63 65 |d by oth|er proce|
|00006010| 73 73 65 73 2c 20 74 68 | 65 79 20 63 61 6e 20 62 |sses, th|ey can b|
|00006020| 65 20 72 65 77 6f 75 6e | 64 2e 20 54 68 65 72 65 |e rewoun|d. There|
|00006030| 20 61 72 65 20 61 6c 73 | 6f 20 6d 61 6e 79 0d 63 | are als|o many.c|
|00006040| 61 6c 6c 73 20 77 68 69 | 63 68 0d 61 72 65 20 73 |alls whi|ch.are s|
|00006050| 70 65 63 69 66 69 63 20 | 74 6f 20 66 69 6c 65 73 |pecific |to files|
|00006060| 2e 0d 0d 5c 66 69 0d 0d | 5c 4e 34 37 2e 20 34 20 |...\fi..|\N47. 4 |
|00006070| 44 69 66 66 65 72 65 6e | 63 65 73 20 74 6f 20 67 |Differen|ces to g|
|00006080| 65 6e 65 72 69 63 20 62 | 65 68 61 76 69 6f 72 2e |eneric b|ehavior.|
|00006090| 0d 0d 5c 66 69 0d 0d 5c | 4d 34 38 2e 20 54 68 65 |..\fi..\|M48. The|
|000060a0| 20 66 6f 6c 6c 6f 77 69 | 6e 67 20 63 61 6c 6c 73 | followi|ng calls|
|000060b0| 20 6d 61 6b 65 20 6e 6f | 20 73 65 6e 73 65 20 66 | make no| sense f|
|000060c0| 6f 72 20 66 69 6c 65 73 | 20 61 6e 64 20 72 65 74 |or files| and ret|
|000060d0| 75 72 6e 20 61 6e 20 65 | 72 72 6f 72 20 6f 66 20 |urn an e|rror of |
|000060e0| 5c 43 44 7b 7d 24 25 0d | 5c 5c 7b 45 4f 50 4e 4f |\CD{}$%.|\\{EOPNO|
|000060f0| 54 53 55 50 50 7d 24 5c | 44 43 7b 7d 3a 0d 5c 6d |TSUPP}$\|DC{}:.\m|
|00006100| 65 64 73 6b 69 70 5c 70 | 6c 61 69 6e 6f 6e 65 63 |edskip\p|lainonec|
|00006110| 6f 6c 7b 0d 5c 43 44 7b | 7d 24 5c 5c 7b 73 6f 63 |ol{.\CD{|}$\\{soc|
|00006120| 6b 65 74 7d 28 5c 2c 29 | 24 5c 44 43 7b 7d 5c 63 |ket}(\,)|$\DC{}\c|
|00006130| 72 0d 5c 43 44 7b 7d 24 | 5c 5c 7b 62 69 6e 64 7d |r.\CD{}$|\\{bind}|
|00006140| 28 5c 2c 29 24 5c 44 43 | 7b 7d 5c 63 72 0d 5c 43 |(\,)$\DC|{}\cr.\C|
|00006150| 44 7b 7d 24 5c 5c 7b 6c | 69 73 74 65 6e 7d 28 5c |D{}$\\{l|isten}(\|
|00006160| 2c 29 24 5c 44 43 7b 7d | 5c 63 72 0d 5c 43 44 7b |,)$\DC{}|\cr.\CD{|
|00006170| 7d 24 5c 5c 7b 61 63 63 | 65 70 74 7d 28 5c 2c 29 |}$\\{acc|ept}(\,)|
|00006180| 24 5c 44 43 7b 7d 5c 63 | 72 0d 5c 43 44 7b 7d 24 |$\DC{}\c|r.\CD{}$|
|00006190| 5c 5c 7b 63 6f 6e 6e 65 | 63 74 7d 28 5c 2c 29 24 |\\{conne|ct}(\,)$|
|000061a0| 5c 44 43 7b 7d 5c 63 72 | 0d 5c 43 44 7b 7d 24 5c |\DC{}\cr|.\CD{}$\|
|000061b0| 5c 7b 67 65 74 73 6f 63 | 6b 6e 61 6d 65 7d 28 5c |\{getsoc|kname}(\|
|000061c0| 2c 29 24 5c 44 43 7b 7d | 5c 63 72 0d 5c 43 44 7b |,)$\DC{}|\cr.\CD{|
|000061d0| 7d 24 5c 5c 7b 67 65 74 | 70 65 65 72 6e 61 6d 65 |}$\\{get|peername|
|000061e0| 7d 28 5c 2c 29 24 5c 44 | 43 7b 7d 5c 63 72 0d 5c |}(\,)$\D|C{}\cr.\|
|000061f0| 43 44 7b 7d 24 5c 5c 7b | 67 65 74 73 6f 63 6b 6f |CD{}$\\{|getsocko|
|00006200| 70 74 7d 28 5c 2c 29 24 | 5c 44 43 7b 7d 5c 63 72 |pt}(\,)$|\DC{}\cr|
|00006210| 0d 5c 43 44 7b 7d 24 5c | 5c 7b 73 65 74 73 6f 63 |.\CD{}$\|\{setsoc|
|00006220| 6b 6f 70 74 7d 28 5c 2c | 29 24 5c 44 43 7b 7d 5c |kopt}(\,|)$\DC{}\|
|00006230| 63 72 0d 7d 0d 0d 5c 66 | 69 0d 0d 5c 4d 34 39 2e |cr.}..\f|i..\M49.|
|00006240| 20 54 68 65 20 66 6f 6c | 6c 6f 77 69 6e 67 20 63 | The fol|lowing c|
|00006250| 61 6c 6c 73 20 7b 5c 69 | 74 20 77 69 6c 6c 7d 20 |alls {\i|t will} |
|00006260| 77 6f 72 6b 2c 20 62 75 | 74 20 6d 69 67 68 74 20 |work, bu|t might |
|00006270| 62 65 20 66 72 6f 77 6e | 65 64 20 75 70 6f 6e 20 |be frown|ed upon |
|00006280| 62 79 20 79 6f 75 72 0d | 66 72 69 65 6e 64 73 0d |by your.|friends.|
|00006290| 28 62 65 73 69 64 65 73 | 2c 20 55 4e 49 58 20 73 |(besides|, UNIX s|
|000062a0| 79 73 74 65 6d 73 20 67 | 65 6e 65 72 61 6c 6c 79 |ystems g|enerally|
|000062b0| 20 77 6f 75 6c 64 6e 27 | 74 20 6c 69 6b 65 20 74 | wouldn'|t like t|
|000062c0| 68 65 6d 29 3a 0d 5c 6d | 65 64 73 6b 69 70 5c 70 |hem):.\m|edskip\p|
|000062d0| 6c 61 69 6e 6f 6e 65 63 | 6f 6c 7b 0d 5c 43 44 7b |lainonec|ol{.\CD{|
|000062e0| 7d 24 5c 5c 7b 72 65 63 | 76 7d 28 5c 2c 29 24 5c |}$\\{rec|v}(\,)$\|
|000062f0| 44 43 7b 7d 5c 63 72 0d | 5c 43 44 7b 7d 24 5c 5c |DC{}\cr.|\CD{}$\\|
|00006300| 7b 72 65 63 76 66 72 6f | 6d 7d 28 5c 2c 29 24 5c |{recvfro|m}(\,)$\|
|00006310| 44 43 7b 7d 5c 63 72 0d | 5c 43 44 7b 7d 24 5c 5c |DC{}\cr.|\CD{}$\\|
|00006320| 7b 72 65 63 76 6d 73 67 | 7d 28 5c 2c 29 24 5c 44 |{recvmsg|}(\,)$\D|
|00006330| 43 7b 7d 5c 63 72 0d 5c | 43 44 7b 7d 24 5c 5c 7b |C{}\cr.\|CD{}$\\{|
|00006340| 73 65 6e 64 7d 28 5c 2c | 29 24 5c 44 43 7b 7d 5c |send}(\,|)$\DC{}\|
|00006350| 63 72 0d 5c 43 44 7b 7d | 24 5c 5c 7b 73 65 6e 64 |cr.\CD{}|$\\{send|
|00006360| 74 6f 7d 28 5c 2c 29 24 | 5c 44 43 7b 7d 5c 63 72 |to}(\,)$|\DC{}\cr|
|00006370| 0d 5c 43 44 7b 7d 24 5c | 5c 7b 73 65 6e 64 6d 73 |.\CD{}$\|\{sendms|
|00006380| 67 7d 28 5c 2c 29 24 5c | 44 43 7b 7d 5c 63 72 0d |g}(\,)$\|DC{}\cr.|
|00006390| 7d 0d 0d 5c 66 69 0d 0d | 5c 4d 35 30 2e 20 5c 43 |}..\fi..|\M50. \C|
|000063a0| 44 7b 7d 24 5c 5c 7b 63 | 68 6f 6f 73 65 7d 28 5c |D{}$\\{c|hoose}(\|
|000063b0| 2c 29 24 5c 44 43 7b 7d | 20 72 65 74 75 72 6e 73 |,)$\DC{}| returns|
|000063c0| 20 7a 65 72 6f 20 74 65 | 72 6d 69 6e 61 74 65 64 | zero te|rminated|
|000063d0| 20 43 20 73 74 72 69 6e | 67 73 20 69 6e 20 5c 43 | C strin|gs in \C|
|000063e0| 44 7b 7d 24 25 0d 5c 5c | 7b 6e 61 6d 65 7d 24 5c |D{}$%.\\|{name}$\|
|000063f0| 44 43 7b 7d 2e 0d 49 74 | 20 61 63 63 65 70 74 73 |DC{}..It| accepts|
+--------+-------------------------+-------------------------+--------+--------+