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+--------+-------------------------+-------------------------+--------+--------+
|00000000| 63 6f 6c 6c 65 63 74 2f | 00 00 00 00 00 00 00 00 |collect/|........|
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|00000200| 63 6f 6c 6c 65 63 74 2f | 52 45 41 44 4d 45 00 00 |collect/|README..|
|00000210| 00 00 00 00 00 00 00 00 | 00 00 00 00 00 00 00 00 |........|........|
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|00000400| 54 68 69 73 20 52 45 41 | 44 4d 45 20 66 69 6c 65 |This REA|DME file|
|00000410| 20 63 6f 6e 73 69 73 74 | 73 20 6f 66 20 74 68 72 | consist|s of thr|
|00000420| 65 65 20 73 65 63 74 69 | 6f 6e 73 2e 20 20 54 68 |ee secti|ons.  Th|
|00000430| 65 20 66 69 72 73 74 20 | 73 65 63 74 69 6f 6e 20 |e first |section |
|00000440| 64 65 73 63 72 69 62 65 | 73 20 69 6e 20 61 20 0a |describe|s in a .|
|00000450| 6c 69 74 74 6c 65 20 6d | 6f 72 65 20 64 65 74 61 |little m|ore deta|
|00000460| 69 6c 20 77 68 61 74 20 | 74 68 65 20 70 72 6f 67 |il what |the prog|
|00000470| 72 61 6d 73 20 22 63 6f | 6c 6c 65 63 74 22 20 61 |rams "co|llect" a|
|00000480| 6e 64 20 22 67 65 6e 65 | 72 61 74 6f 72 22 20 64 |nd "gene|rator" d|
|00000490| 6f 2e 20 20 54 68 65 20 | 73 65 63 6f 6e 64 20 0a |o.  The |second .|
|000004a0| 73 65 63 74 69 6f 6e 20 | 64 65 73 63 72 69 62 65 |section |describe|
|000004b0| 73 20 74 68 65 20 69 6e | 73 74 61 6c 6c 61 74 69 |s the in|stallati|
|000004c0| 6f 6e 20 6f 66 20 74 68 | 65 20 63 6f 6c 6c 65 63 |on of th|e collec|
|000004d0| 74 69 6f 6e 20 70 61 63 | 6b 61 67 65 2e 20 20 54 |tion pac|kage.  T|
|000004e0| 68 65 20 6c 61 73 74 20 | 73 65 63 74 69 6f 6e 0a |he last |section.|
|000004f0| 64 65 73 63 72 69 62 65 | 73 20 61 20 73 61 6d 70 |describe|s a samp|
|00000500| 6c 65 20 63 6f 6c 6c 65 | 63 74 69 6f 6e 20 72 75 |le colle|ction ru|
|00000510| 6e 2e 0a 0a 49 6e 20 74 | 68 65 20 72 65 6c 65 61 |n...In t|he relea|
|00000520| 73 65 20 6e 6f 74 65 20 | 70 6f 73 74 65 64 2c 20 |se note |posted, |
|00000530| 77 65 20 64 69 73 63 75 | 73 73 65 64 20 74 68 65 |we discu|ssed the|
|00000540| 20 69 6d 70 6f 72 74 61 | 6e 63 65 20 6f 66 20 65 | importa|nce of e|
|00000550| 73 74 69 6d 61 74 69 6e | 67 20 6c 6f 73 73 2d 0a |stimatin|g loss-.|
|00000560| 72 61 74 65 20 69 6e 20 | 74 72 61 63 65 20 63 6f |rate in |trace co|
|00000570| 6c 6c 65 63 74 69 6f 6e | 2e 20 20 49 66 20 79 6f |llection|.  If yo|
|00000580| 75 20 64 6f 20 6e 6f 74 | 20 68 61 76 65 20 74 68 |u do not| have th|
|00000590| 65 20 65 71 75 69 70 6d | 65 6e 74 20 6e 65 63 65 |e equipm|ent nece|
|000005a0| 73 73 61 72 79 20 66 6f | 72 0a 65 73 74 69 6d 61 |ssary fo|r.estima|
|000005b0| 74 69 6e 67 20 6c 6f 73 | 73 2d 72 61 74 65 2c 20 |ting los|s-rate, |
|000005c0| 79 6f 75 20 63 61 6e 20 | 69 67 6e 6f 72 65 20 61 |you can |ignore a|
|000005d0| 6c 6c 20 6d 65 6e 74 69 | 6f 6e 73 20 6f 66 20 74 |ll menti|ons of t|
|000005e0| 68 65 20 22 67 65 6e 65 | 72 61 74 6f 72 22 20 70 |he "gene|rator" p|
|000005f0| 72 6f 67 72 61 6d 20 69 | 6e 0a 74 68 65 20 72 65 |rogram i|n.the re|
|00000600| 73 74 20 6f 66 20 74 68 | 69 73 20 66 69 6c 65 3b |st of th|is file;|
|00000610| 20 77 65 20 77 6f 75 6c | 64 20 73 74 69 6c 6c 20 | we woul|d still |
|00000620| 65 6e 63 6f 75 72 61 67 | 65 20 79 6f 75 20 74 6f |encourag|e you to|
|00000630| 20 63 6f 6c 6c 65 63 74 | 20 64 61 74 61 20 77 68 | collect| data wh|
|00000640| 69 63 68 20 77 65 20 0a | 77 69 6c 6c 20 75 73 65 |ich we .|will use|
|00000650| 20 74 6f 20 73 75 70 70 | 6f 72 74 20 63 6f 6e 63 | to supp|ort conc|
|00000660| 6c 75 73 69 6f 6e 73 20 | 64 72 61 77 6e 20 66 72 |lusions |drawn fr|
|00000670| 6f 6d 20 70 72 69 6d 61 | 72 79 20 74 72 61 63 65 |om prima|ry trace|
|00000680| 73 2e 20 20 0a 0a 4a 65 | 66 66 20 4d 6f 67 75 6c |s.  ..Je|ff Mogul|
|00000690| 20 61 6e 64 20 56 65 72 | 6e 20 50 61 78 73 6f 6e | and Ver|n Paxson|
|000006a0| 20 6e 6f 74 69 66 69 65 | 64 20 75 73 20 6f 66 20 | notifie|d us of |
|000006b0| 74 68 65 20 61 62 69 6c | 69 74 79 20 6f 66 20 74 |the abil|ity of t|
|000006c0| 63 70 64 75 6d 70 20 74 | 6f 20 6c 6f 67 20 64 72 |cpdump t|o log dr|
|000006d0| 6f 70 70 65 64 0a 70 61 | 63 6b 65 74 73 20 6f 6e |opped.pa|ckets on|
|000006e0| 20 55 6c 74 72 69 78 20 | 61 6e 64 20 42 53 44 2b | Ultrix |and BSD+|
|000006f0| 42 50 46 20 73 79 73 74 | 65 6d 73 2e 20 20 59 6f |BPF syst|ems.  Yo|
|00000700| 75 20 63 61 6e 20 74 75 | 72 6e 20 74 63 70 64 75 |u can tu|rn tcpdu|
|00000710| 6d 70 20 6c 6f 67 67 69 | 6e 67 20 6f 6e 20 61 6e |mp loggi|ng on an|
|00000720| 64 20 0a 69 67 6e 6f 72 | 65 20 61 6c 6c 20 6d 65 |d .ignor|e all me|
|00000730| 6e 74 69 6f 6e 20 6f 66 | 20 22 67 65 6e 65 72 61 |ntion of| "genera|
|00000740| 74 6f 72 22 20 69 6e 20 | 74 68 65 20 72 65 73 74 |tor" in |the rest|
|00000750| 20 6f 66 20 74 68 69 73 | 20 66 69 6c 65 2e 0a 0a | of this| file...|
|00000760| 31 2e 20 44 45 53 43 52 | 49 50 54 49 4f 4e 0a 3d |1. DESCR|IPTION.=|
|00000770| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 0a 0a 22 |========|=====.."|
|00000780| 43 6f 6c 6c 65 63 74 22 | 20 69 73 20 61 20 73 68 |Collect"| is a sh|
|00000790| 65 6c 6c 20 73 63 72 69 | 70 74 20 77 68 69 63 68 |ell scri|pt which|
|000007a0| 20 69 6e 76 6f 6b 65 73 | 20 74 68 65 20 74 63 70 | invokes| the tcp|
|000007b0| 64 75 6d 70 20 70 72 6f | 67 72 61 6d 20 74 6f 20 |dump pro|gram to |
|000007c0| 63 6f 6c 6c 65 63 74 20 | 0a 6e 65 74 77 6f 72 6b |collect |.network|
|000007d0| 20 70 61 63 6b 65 74 20 | 68 65 61 64 65 72 73 2e | packet |headers.|
|000007e0| 20 20 57 65 20 61 72 65 | 20 69 6e 74 65 72 65 73 |  We are| interes|
|000007f0| 74 65 64 20 6f 6e 6c 79 | 20 69 6e 20 74 68 65 20 |ted only| in the |
|00000800| 49 50 20 61 6e 64 20 54 | 43 50 20 68 65 61 64 65 |IP and T|CP heade|
|00000810| 72 73 20 6f 66 20 0a 70 | 61 63 6b 65 74 73 20 77 |rs of .p|ackets w|
|00000820| 69 74 68 20 74 68 65 69 | 72 20 54 43 50 20 53 59 |ith thei|r TCP SY|
|00000830| 4e 2c 20 46 49 4e 2c 20 | 6f 72 20 52 53 54 20 66 |N, FIN, |or RST f|
|00000840| 6c 61 67 20 73 65 74 2e | 20 20 20 57 65 20 75 73 |lag set.|   We us|
|00000850| 65 20 74 68 65 73 65 20 | 70 61 63 6b 65 74 73 20 |e these |packets |
|00000860| 74 6f 20 0a 64 65 6e 6f | 74 65 20 74 68 65 20 62 |to .deno|te the b|
|00000870| 65 67 69 6e 6e 69 6e 67 | 20 61 6e 64 20 65 6e 64 |eginning| and end|
|00000880| 20 6f 66 20 61 20 54 43 | 50 20 22 63 6f 6e 76 65 | of a TC|P "conve|
|00000890| 72 73 61 74 69 6f 6e 2e | 22 20 54 6f 20 63 6f 6c |rsation.|" To col|
|000008a0| 6c 65 63 74 20 70 61 63 | 6b 65 74 73 2c 20 0a 74 |lect pac|kets, .t|
|000008b0| 63 70 64 75 6d 70 20 70 | 75 74 73 20 74 68 65 20 |cpdump p|uts the |
|000008c0| 65 74 68 65 72 6e 65 74 | 20 69 6e 74 65 72 66 61 |ethernet| interfa|
|000008d0| 63 65 20 69 6e 20 70 72 | 6f 6d 69 73 63 75 6f 75 |ce in pr|omiscuou|
|000008e0| 73 20 6d 6f 64 65 2e 20 | 20 49 74 20 70 61 73 73 |s mode. | It pass|
|000008f0| 65 73 20 74 68 65 20 70 | 61 63 6b 65 74 73 0a 74 |es the p|ackets.t|
|00000900| 68 72 6f 75 67 68 20 61 | 20 75 73 65 72 2d 73 75 |hrough a| user-su|
|00000910| 70 70 6c 69 65 64 20 66 | 69 6c 74 65 72 20 61 6e |pplied f|ilter an|
|00000920| 64 20 63 6f 6c 6c 65 63 | 74 73 20 6f 6e 6c 79 20 |d collec|ts only |
|00000930| 74 68 6f 73 65 20 70 61 | 63 6b 65 74 73 20 74 68 |those pa|ckets th|
|00000940| 61 74 20 63 6f 6d 65 20 | 0a 74 68 72 6f 75 67 68 |at come |.through|
|00000950| 2e 20 20 28 57 65 27 64 | 20 6c 69 6b 65 20 74 6f |.  (We'd| like to|
|00000960| 20 74 68 61 6e 6b 20 56 | 65 72 6e 20 50 61 78 73 | thank V|ern Paxs|
|00000970| 6f 6e 20 61 74 20 4c 42 | 4c 20 66 6f 72 20 68 69 |on at LB|L for hi|
|00000980| 73 20 74 63 70 64 75 6d | 70 20 68 65 6c 70 29 2e |s tcpdum|p help).|
|00000990| 0a 0a 54 68 65 20 63 6f | 6c 6c 65 63 74 69 6f 6e |..The co|llection|
|000009a0| 20 72 6f 75 74 69 6e 65 | 20 6d 75 73 74 20 72 75 | routine| must ru|
|000009b0| 6e 20 6f 6e 20 61 20 6d | 61 63 68 69 6e 65 20 63 |n on a m|achine c|
|000009c0| 6f 6e 6e 65 63 74 65 64 | 20 74 6f 20 74 68 65 20 |onnected| to the |
|000009d0| 73 61 6d 65 20 65 74 68 | 65 72 6e 65 74 20 0a 73 |same eth|ernet .s|
|000009e0| 65 67 6d 65 6e 74 20 61 | 73 20 79 6f 75 72 20 73 |egment a|s your s|
|000009f0| 69 74 65 27 73 20 49 6e | 74 65 72 6e 65 74 20 67 |ite's In|ternet g|
|00000a00| 61 74 65 77 61 79 2c 20 | 73 6f 20 74 68 61 74 20 |ateway, |so that |
|00000a10| 61 6c 6c 20 49 6e 74 65 | 72 6e 65 74 20 70 61 63 |all Inte|rnet pac|
|00000a20| 6b 65 74 73 20 63 61 6e | 20 62 65 20 0a 6f 62 73 |kets can| be .obs|
|00000a30| 65 72 76 65 64 2e 0a 0a | 53 69 6e 63 65 20 74 63 |erved...|Since tc|
|00000a40| 70 64 75 6d 70 20 69 73 | 20 6e 6f 74 20 6c 6f 73 |pdump is| not los|
|00000a50| 73 2d 6c 65 73 73 2c 20 | 77 65 20 68 61 76 65 20 |s-less, |we have |
|00000a60| 77 72 69 74 74 65 6e 20 | 74 68 65 20 22 67 65 6e |written |the "gen|
|00000a70| 65 72 61 74 6f 72 22 20 | 70 72 6f 67 72 61 6d 20 |erator" |program |
|00000a80| 74 6f 20 0a 65 73 74 69 | 6d 61 74 65 20 74 68 65 |to .esti|mate the|
|00000a90| 20 6c 6f 73 73 2d 72 61 | 74 65 20 65 78 70 65 72 | loss-ra|te exper|
|00000aa0| 69 65 6e 63 65 64 20 64 | 75 72 69 6e 67 20 63 6f |ienced d|uring co|
|00000ab0| 6c 6c 65 63 74 69 6f 6e | 2e 20 20 47 65 6e 65 72 |llection|.  Gener|
|00000ac0| 61 74 6f 72 20 73 65 6e | 64 73 20 61 20 64 61 74 |ator sen|ds a dat|
|00000ad0| 61 20 0a 73 74 72 65 61 | 6d 20 62 65 74 77 65 65 |a .strea|m betwee|
|00000ae0| 6e 20 74 77 6f 20 69 6e | 74 65 72 6e 65 74 20 68 |n two in|ternet h|
|00000af0| 6f 73 74 73 2c 20 62 79 | 20 22 70 69 6e 67 69 6e |osts, by| "pingin|
|00000b00| 67 22 20 61 20 70 72 65 | 2d 73 70 65 63 69 66 69 |g" a pre|-specifi|
|00000b10| 65 64 20 70 6f 72 74 20 | 6f 66 20 61 20 0a 72 65 |ed port |of a .re|
|00000b20| 6d 6f 74 65 20 68 6f 73 | 74 3b 20 74 68 65 73 65 |mote hos|t; these|
|00000b30| 20 70 61 63 6b 65 74 73 | 20 61 72 65 20 64 69 73 | packets| are dis|
|00000b40| 63 61 72 64 65 64 20 62 | 79 20 74 68 65 20 72 65 |carded b|y the re|
|00000b50| 6d 6f 74 65 20 68 6f 73 | 74 2e 20 20 54 68 65 20 |mote hos|t.  The |
|00000b60| 69 6e 74 65 72 61 72 72 | 69 76 61 6c 20 0a 74 69 |interarr|ival .ti|
|00000b70| 6d 65 73 20 6f 66 20 74 | 68 65 20 70 69 6e 67 20 |mes of t|he ping |
|00000b80| 70 61 63 6b 65 74 73 20 | 61 72 65 20 65 78 70 6f |packets |are expo|
|00000b90| 6e 65 6e 74 69 61 6c 6c | 79 20 64 69 73 74 72 69 |nentiall|y distri|
|00000ba0| 62 75 74 65 64 2e 20 20 | 54 68 69 73 20 69 6e 2d |buted.  |This in-|
|00000bb0| 62 61 6e 64 20 64 61 74 | 61 20 0a 73 74 72 65 61 |band dat|a .strea|
|00000bc0| 6d 20 69 73 20 73 61 6d | 70 6c 65 64 20 62 79 20 |m is sam|pled by |
|00000bd0| 74 68 65 20 63 6f 6c 6c | 65 63 74 69 6f 6e 20 72 |the coll|ection r|
|00000be0| 6f 75 74 69 6e 65 20 74 | 6f 20 65 73 74 69 6d 61 |outine t|o estima|
|00000bf0| 74 65 20 74 68 65 20 6c | 6f 73 73 2d 72 61 74 65 |te the l|oss-rate|
|00000c00| 2e 20 20 0a 4e 65 65 64 | 6c 65 73 73 20 74 6f 20 |.  .Need|less to |
|00000c10| 73 61 79 2c 20 74 68 65 | 20 70 61 74 68 20 66 72 |say, the| path fr|
|00000c20| 6f 6d 20 74 68 65 20 6d | 61 63 68 69 6e 65 20 77 |om the m|achine w|
|00000c30| 68 65 72 65 20 22 67 65 | 6e 65 72 61 74 6f 72 22 |here "ge|nerator"|
|00000c40| 20 69 73 20 72 75 6e 6e | 69 6e 67 20 74 6f 20 74 | is runn|ing to t|
|00000c50| 68 65 20 0a 74 61 72 67 | 65 74 20 6d 61 63 68 69 |he .targ|et machi|
|00000c60| 6e 65 20 77 68 65 72 65 | 20 69 74 20 69 73 20 73 |ne where| it is s|
|00000c70| 65 6e 64 69 6e 67 20 70 | 61 63 6b 65 74 73 20 74 |ending p|ackets t|
|00000c80| 6f 20 68 61 73 20 74 6f | 20 74 72 61 76 65 72 73 |o has to| travers|
|00000c90| 65 20 74 68 65 20 65 74 | 68 65 72 6e 65 74 20 0a |e the et|hernet .|
|00000ca0| 73 65 67 6d 65 6e 74 20 | 77 68 65 72 65 20 22 63 |segment |where "c|
|00000cb0| 6f 6c 6c 65 63 74 22 20 | 69 73 20 72 75 6e 6e 69 |ollect" |is runni|
|00000cc0| 6e 67 2c 20 61 6e 64 20 | 74 68 65 79 20 62 6f 74 |ng, and |they bot|
|00000cd0| 68 20 68 61 76 65 20 74 | 6f 20 62 65 20 6f 6e 20 |h have t|o be on |
|00000ce0| 74 68 65 20 73 61 6d 65 | 20 73 75 62 6e 65 74 0a |the same| subnet.|
|00000cf0| 28 53 65 65 20 46 69 67 | 75 72 65 20 31 29 2e 0a |(See Fig|ure 1)..|
|00000d00| 0a 4c 6f 73 73 2d 72 61 | 74 65 20 69 73 20 68 69 |.Loss-ra|te is hi|
|00000d10| 67 68 6c 79 20 64 65 70 | 65 6e 64 65 6e 74 20 6f |ghly dep|endent o|
|00000d20| 6e 20 74 68 65 20 63 6f | 6c 6c 65 63 74 69 6f 6e |n the co|llection|
|00000d30| 20 6d 61 63 68 69 6e 65 | 27 73 20 43 50 55 20 75 | machine|'s CPU u|
|00000d40| 74 69 6c 69 7a 61 74 69 | 6f 6e 2c 20 74 68 75 73 |tilizati|on, thus|
|00000d50| 0a 77 65 20 73 75 67 67 | 65 73 74 20 74 68 61 74 |.we sugg|est that|
|00000d60| 20 74 68 65 20 63 6f 6c | 6c 65 63 74 69 6f 6e 20 | the col|lection |
|00000d70| 62 65 20 72 75 6e 20 6f | 6e 20 61 20 64 65 64 69 |be run o|n a dedi|
|00000d80| 63 61 74 65 64 20 77 6f | 72 6b 73 74 61 74 69 6f |cated wo|rkstatio|
|00000d90| 6e 2e 20 20 46 75 72 74 | 68 65 72 6d 6f 72 65 2c |n.  Furt|hermore,|
|00000da0| 0a 73 69 6e 63 65 20 53 | 75 6e 4f 53 27 73 20 6e |.since S|unOS's n|
|00000db0| 69 74 20 69 6e 74 65 72 | 66 61 63 65 20 63 61 6e |it inter|face can|
|00000dc0| 6e 6f 74 20 63 6f 6c 6c | 65 63 74 20 70 61 63 6b |not coll|ect pack|
|00000dd0| 65 74 73 20 67 65 6e 65 | 72 61 74 65 64 20 62 79 |ets gene|rated by|
|00000de0| 20 74 68 65 20 6c 6f 63 | 61 6c 20 0a 6d 61 63 68 | the loc|al .mach|
|00000df0| 69 6e 65 2c 20 74 68 65 | 20 67 65 6e 65 72 61 74 |ine, the| generat|
|00000e00| 6f 72 20 70 72 6f 67 72 | 61 6d 20 68 61 73 20 74 |or progr|am has t|
|00000e10| 6f 20 62 65 20 72 75 6e | 20 6f 6e 20 61 20 6d 61 |o be run| on a ma|
|00000e20| 63 68 69 6e 65 20 73 65 | 70 61 72 61 74 65 20 66 |chine se|parate f|
|00000e30| 72 6f 6d 20 74 68 65 20 | 6f 6e 65 20 0a 72 75 6e |rom the |one .run|
|00000e40| 6e 69 6e 67 20 63 6f 6c | 6c 65 63 74 20 28 53 65 |ning col|lect (Se|
|00000e50| 65 20 46 69 67 75 72 65 | 20 31 29 2e 0a 0a 20 20 |e Figure| 1)...  |
|00000e60| 20 20 20 20 20 20 20 20 | 20 20 20 3d 3d 3d 3d 3d |        |   =====|
|00000e70| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00000e80| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00000e90| 3d 0a 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |=.      |        |
|00000ea0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00000eb0| 20 7c 7c 0a 20 20 20 20 | 20 20 20 20 20 20 20 20 | ||.    |        |
|00000ec0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00000ed0| 20 20 20 7c 7c 0a 20 20 | 20 20 20 20 20 20 20 20 |   ||.  |        |
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|00000fb0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
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|00001090| 65 6e 65 72 61 74 6f 72 | 7c 20 20 20 20 20 20 20 |enerator||       |
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|000010d0| 20 7c 20 73 6f 75 72 63 | 65 3a 20 7c 20 20 20 20 | | sourc|e: |    |
|000010e0| 20 20 20 20 20 20 20 20 | 20 20 7c 20 68 6f 73 74 |        |  | host|
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|00001110| 20 20 20 20 7c 20 20 20 | 6b 6f 73 20 20 20 7c 20 |    |   |kos   | |
|00001120| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 7c 63 61 |        |     |ca|
|00001130| 6c 64 65 72 61 7c 20 20 | 20 20 20 20 20 20 20 7c |ldera|  |       ||
|00001140| 20 20 78 61 6e 61 64 75 | 20 20 7c 0a 20 20 20 20 |  xanadu|  |.    |
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|00001190| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|000011a0| 46 69 67 2e 20 31 3a 20 | 45 78 61 6d 70 6c 65 20 |Fig. 1: |Example |
|000011b0| 63 6f 6c 6c 65 63 74 69 | 6f 6e 20 72 75 6e 20 73 |collecti|on run s|
|000011c0| 65 74 75 70 2e 0a 0a 0a | 32 2e 20 49 4e 53 54 41 |etup....|2. INSTA|
|000011d0| 4c 4c 41 54 49 4f 4e 0a | 3d 3d 3d 3d 3d 3d 3d 3d |LLATION.|========|
|000011e0| 3d 3d 3d 3d 3d 3d 3d 0a | 49 6e 20 74 68 65 20 73 |=======.|In the s|
|000011f0| 61 6d 65 20 64 69 72 65 | 63 74 6f 72 79 20 61 73 |ame dire|ctory as|
|00001200| 20 74 68 69 73 20 52 45 | 41 44 4d 45 20 66 69 6c | this RE|ADME fil|
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|00001240| 20 4d 61 6b 65 66 69 6c | 65 0a 20 20 20 20 32 35 | Makefil|e.    25|
|00001250| 37 30 20 63 6f 6c 6c 65 | 63 74 2a 0a 20 20 20 20 |70 colle|ct*.    |
|00001260| 32 31 37 31 20 63 6f 6c | 6c 65 63 74 2e 31 0a 20 |2171 col|lect.1. |
|00001270| 20 20 20 31 33 39 39 20 | 67 65 6e 65 72 61 74 6f |   1399 |generato|
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|000012a0| 6c 65 73 20 22 63 6f 6c | 6c 65 63 74 2e 31 22 20 |les "col|lect.1" |
|000012b0| 61 6e 64 20 22 67 65 6e | 65 72 61 74 6f 72 2e 31 |and "gen|erator.1|
|000012c0| 22 20 61 72 65 20 74 68 | 65 20 6d 61 6e 75 61 6c |" are th|e manual|
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|00001410| 20 68 6f 77 65 76 65 72 | 2c 20 79 6f 75 20 6e 65 | however|, you ne|
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|000014c0| 54 49 4f 4e 0a 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |TION.===|========|
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|00003cb0| 20 65 63 68 6f 20 24 31 | 20 24 32 20 24 33 20 24 | echo $1| $2 $3 $|
|00003cc0| 34 20 0a 20 20 20 20 65 | 63 68 6f 20 24 55 53 41 |4 .    e|cho $USA|
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|00003d40| 0a 23 0a 74 63 70 64 75 | 6d 70 20 2d 77 20 24 48 |.#.tcpdu|mp -w $H|
|00003d50| 4f 53 54 4e 41 4d 45 20 | 24 4f 50 54 49 4f 4e 53 |OSTNAME |$OPTIONS|
|00003d60| 20 5c 28 5c 28 74 63 70 | 5c 5b 31 33 5c 5d 20 5c | \(\(tcp|\[13\] \|
|00003d70| 26 20 37 20 5c 21 5c 3d | 20 30 5c 29 20 61 6e 64 |& 7 \!\=| 0\) and|
|00003d80| 20 5c 28 6e 6f 74 20 5c | 28 73 72 63 20 61 6e 64 | \(not \|(src and|
|00003d90| 20 64 73 74 20 6e 65 74 | 20 24 4c 4f 43 41 4c 4e | dst net| $LOCALN|
|00003da0| 45 54 5c 29 5c 29 5c 29 | 20 24 50 49 4e 47 5f 46 |ET\)\)\)| $PING_F|
|00003db0| 49 4c 54 45 52 20 3e 20 | 24 48 4f 53 54 4e 41 4d |ILTER > |$HOSTNAM|
|00003dc0| 45 2e 6c 6f 67 20 26 0a | 0a 23 0a 23 20 73 63 68 |E.log &.|.#.# sch|
|00003dd0| 65 64 75 6c 65 20 74 68 | 65 20 63 6f 6c 6c 65 63 |edule th|e collec|
|00003de0| 74 20 70 72 6f 63 65 73 | 73 20 74 6f 20 62 65 20 |t proces|s to be |
|00003df0| 61 75 74 6f 6d 61 74 69 | 63 61 6c 6c 79 20 6b 69 |automati|cally ki|
|00003e00| 6c 6c 65 64 20 61 66 74 | 65 72 20 74 68 65 0a 23 |lled aft|er the.#|
|00003e10| 20 73 70 65 63 69 66 69 | 65 64 20 63 6f 6c 6c 65 | specifi|ed colle|
|00003e20| 63 74 20 64 75 72 61 74 | 69 6f 6e 0a 23 0a 73 6c |ct durat|ion.#.sl|
|00003e30| 65 65 70 20 60 65 78 70 | 72 20 36 30 20 5c 2a 20 |eep `exp|r 60 \* |
|00003e40| 24 44 55 52 41 54 49 4f | 4e 60 0a 6b 69 6c 6c 20 |$DURATIO|N`.kill |
|00003e50| 24 21 0a 69 67 75 72 65 | 20 31 29 2e 0a 0a 20 20 |$!.igure| 1)...  |
|00003e60| 20 20 20 20 20 20 20 20 | 20 20 20 3d 3d 3d 3d 3d |        |   =====|
|00003e70| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00003e80| 3d 3d 3d 3d 3d 3d 3d 3d | 3d 3d 3d 3d 3d 3d 3d 3d |========|========|
|00003e90| 3d 0a 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |=.      |        |
|00003ea0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00003eb0| 20 7c 7c 0a 20 20 20 20 | 20 20 20 20 20 20 20 20 | ||.    |        |
|00003ec0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00003ed0| 20 20 20 7c 7c 0a 20 20 | 20 20 20 20 20 20 20 20 |   ||.  |        |
|00003ee0| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00003ef0| 20 20 20 2b 2d 2d 2d 2d | 2b 0a 20 20 20 20 20 20 |   +----|+.      |
|00003f00| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00003f10| 20 20 20 20 20 20 20 7c | 20 47 57 20 7c 0a 20 20 |       || GW |.  |
|00003f20| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00003f30| 20 20 20 20 20 20 20 20 | 20 20 20 2b 2d 2d 2d 2d |        |   +----|
|00003f40| 2b 0a 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |+.      |        |
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|00003f70| 20 20 20 20 20 20 20 20 | 20 20 20 20 20 20 20 20 |        |        |
|00003f80| 20 20 20 20 7c 0a 20 20 | 20 20 20 20 20 20 20 20 |    |.  |        |
|00003f90| 20 20 20 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |   -----|--------|
|00003fa0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
|00003fb0| 2d 2d 2d 2d 2d 2d 2d 2d | 2d 2d 2d 2d 2d 2d 2d 2d |--------|--------|
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|00004200| 2e 54 48 20 47 45 4e 45 | 52 41 54 4f 52 20 31 20 |.TH GENE|RATOR 1 |
|00004210| 22 32 32 20 4e 6f 76 65 | 6d 62 65 72 20 31 39 39 |"22 Nove|mber 199|
|00004220| 31 22 0a 2e 53 48 20 4e | 41 4d 45 0a 67 65 6e 65 |1"..SH N|AME.gene|
|00004230| 72 61 74 6f 72 20 5c 2d | 20 53 69 6d 70 6c 65 20 |rator \-| Simple |
|00004240| 72 61 6e 64 6f 6d 20 55 | 44 50 20 74 72 61 66 66 |random U|DP traff|
|00004250| 69 63 20 67 65 6e 65 72 | 61 74 69 6f 6e 20 70 72 |ic gener|ation pr|
|00004260| 6f 67 72 61 6d 0a 2e 53 | 48 20 53 59 4e 4f 50 53 |ogram..S|H SYNOPS|
|00004270| 49 53 0a 2e 42 20 67 65 | 6e 65 72 61 74 6f 72 0a |IS..B ge|nerator.|
|00004280| 5b 0a 2e 42 20 5c 2d 68 | 5c 20 72 65 6d 6f 74 65 |[..B \-h|\ remote|
|00004290| 5f 68 6f 73 74 0a 5d 0a | 5b 0a 2e 42 20 5c 2d 70 |_host.].|[..B \-p|
|000042a0| 5c 20 72 65 6d 6f 74 65 | 5f 70 6f 72 74 0a 5d 0a |\ remote|_port.].|
|000042b0| 2e 69 66 20 6e 20 2e 74 | 69 20 2b 37 0a 5b 0a 2e |.if n .t|i +7.[..|
|000042c0| 42 20 5c 2d 64 5c 20 64 | 75 72 61 74 69 6f 6e 0a |B \-d\ d|uration.|
|000042d0| 5d 0a 5b 0a 2e 42 20 5c | 2d 6d 5c 20 6d 65 61 6e |].[..B \|-m\ mean|
|000042e0| 5f 69 6e 74 65 72 61 72 | 72 69 76 61 6c 0a 5d 0a |_interar|rival.].|
|000042f0| 2e 53 48 20 44 45 53 43 | 52 49 50 54 49 4f 4e 0a |.SH DESC|RIPTION.|
|00004300| 54 68 69 73 20 70 72 6f | 67 72 61 6d 20 67 65 6e |This pro|gram gen|
|00004310| 65 72 61 74 65 73 20 55 | 44 50 20 70 61 63 6b 65 |erates U|DP packe|
|00004320| 74 73 20 62 65 74 77 65 | 65 6e 20 74 68 65 20 6c |ts betwe|en the l|
|00004330| 6f 63 61 6c 20 68 6f 73 | 74 20 61 6e 64 20 74 68 |ocal hos|t and th|
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|00004350| 68 65 20 69 6e 74 65 72 | 61 72 72 69 76 61 6c 20 |he inter|arrival |
|00004360| 74 69 6d 65 73 20 6f 66 | 20 70 61 63 6b 65 74 73 |times of| packets|
|00004370| 20 61 72 65 20 65 78 70 | 6f 6e 65 6e 74 69 61 6c | are exp|onential|
|00004380| 6c 79 20 64 69 73 74 72 | 69 62 75 74 65 64 20 77 |ly distr|ibuted w|
|00004390| 69 74 68 20 74 68 65 20 | 0a 73 70 65 63 69 66 69 |ith the |.specifi|
|000043a0| 65 64 20 6d 65 61 6e 5f | 69 6e 74 65 72 61 72 72 |ed mean_|interarr|
|000043b0| 69 76 61 6c 2e 0a 54 68 | 65 20 67 65 6e 65 72 61 |ival..Th|e genera|
|000043c0| 74 65 64 20 74 72 61 66 | 66 69 63 20 73 74 72 65 |ted traf|fic stre|
|000043d0| 61 6d 20 63 61 6e 20 62 | 65 20 73 61 6d 70 6c 65 |am can b|e sample|
|000043e0| 64 20 62 79 20 61 20 64 | 61 74 61 20 63 6f 6c 6c |d by a d|ata coll|
|000043f0| 65 63 74 69 6f 6e 20 70 | 72 6f 67 72 61 6d 2c 0a |ection p|rogram,.|
|00004400| 65 2e 67 2e 20 63 6f 6c | 6c 65 63 74 28 31 29 2c |e.g. col|lect(1),|
|00004410| 20 74 6f 20 65 6d 70 69 | 72 69 63 61 6c 6c 79 20 | to empi|rically |
|00004420| 64 65 74 65 72 6d 69 6e | 65 20 74 68 65 20 6c 6f |determin|e the lo|
|00004430| 73 73 2d 72 61 74 65 20 | 6f 66 20 74 68 65 20 63 |ss-rate |of the c|
|00004440| 6f 6c 6c 65 63 74 69 6f | 6e 20 72 75 6e 2e 0a 54 |ollectio|n run..T|
|00004450| 68 65 20 73 74 61 74 69 | 73 74 69 63 73 20 6f 66 |he stati|stics of|
|00004460| 20 61 20 67 65 6e 65 72 | 61 74 6f 72 20 72 75 6e | a gener|ator run|
|00004470| 20 69 73 20 77 72 69 74 | 74 65 6e 20 74 6f 20 61 | is writ|ten to a|
|00004480| 20 66 69 6c 65 20 6e 61 | 6d 65 64 20 3c 5c 66 49 | file na|med <\fI|
|00004490| 68 6f 73 74 6e 61 6d 65 | 5c 66 52 3e 2e 20 20 0a |hostname|\fR>.  .|
|000044a0| 50 6c 65 61 73 65 20 63 | 6f 6e 74 61 63 74 20 75 |Please c|ontact u|
|000044b0| 73 2c 20 61 74 20 74 72 | 61 66 66 69 63 40 65 78 |s, at tr|affic@ex|
|000044c0| 63 61 6c 69 62 75 72 2e | 75 73 63 2e 65 64 75 2c |calibur.|usc.edu,|
|000044d0| 20 74 6f 20 61 72 72 61 | 6e 67 65 20 66 6f 72 20 | to arra|nge for |
|000044e0| 74 68 65 20 64 72 6f 70 | 20 6f 66 66 20 0a 6f 66 |the drop| off .of|
|000044f0| 20 74 68 69 73 20 66 69 | 6c 65 2e 0a 0a 2e 53 48 | this fi|le....SH|
|00004500| 20 4f 50 54 49 4f 4e 53 | 0a 2e 54 50 20 38 0a 2d | OPTIONS|..TP 8.-|
|00004510| 68 20 72 65 6d 6f 74 65 | 5f 68 6f 73 74 0a 48 6f |h remote|_host.Ho|
|00004520| 73 74 20 74 6f 20 73 65 | 6e 64 20 67 65 6e 65 72 |st to se|nd gener|
|00004530| 61 74 65 64 20 70 61 63 | 6b 65 74 73 20 74 6f 2e |ated pac|kets to.|
|00004540| 20 20 44 65 66 61 75 6c | 74 20 69 73 20 6c 6f 63 |  Defaul|t is loc|
|00004550| 61 6c 68 6f 73 74 2e 0a | 2e 54 50 0a 2d 70 20 72 |alhost..|.TP.-p r|
|00004560| 65 6d 6f 74 65 5f 70 6f | 72 74 0a 50 6f 72 74 20 |emote_po|rt.Port |
|00004570| 6e 75 6d 62 65 72 20 74 | 6f 20 73 65 6e 64 20 67 |number t|o send g|
|00004580| 65 6e 65 72 61 74 65 64 | 20 70 61 63 6b 65 74 73 |enerated| packets|
|00004590| 20 74 6f 20 6f 6e 20 72 | 65 6d 6f 74 65 20 68 6f | to on r|emote ho|
|000045a0| 73 74 2e 20 20 44 65 66 | 61 75 6c 74 20 69 73 20 |st.  Def|ault is |
|000045b0| 39 20 5b 44 49 53 43 41 | 52 44 5d 2e 0a 2e 54 50 |9 [DISCA|RD]...TP|
|000045c0| 0a 2d 64 20 64 75 72 61 | 74 69 6f 6e 0a 53 70 65 |.-d dura|tion.Spe|
|000045d0| 63 69 66 79 20 74 68 65 | 20 64 75 72 61 74 69 6f |cify the| duratio|
|000045e0| 6e 20 6f 66 20 67 65 6e | 65 72 61 74 65 72 27 73 |n of gen|erater's|
|000045f0| 20 72 75 6e 2c 20 69 6e | 20 6d 69 6e 75 74 65 73 | run, in| minutes|
|00004600| 2e 20 20 54 68 65 20 64 | 65 66 61 75 6c 74 20 69 |.  The d|efault i|
|00004610| 73 20 0a 31 34 34 35 20 | 6d 69 6e 75 74 65 73 20 |s .1445 |minutes |
|00004620| 28 32 34 20 68 6f 75 72 | 73 20 61 6e 64 20 35 20 |(24 hour|s and 5 |
|00004630| 6d 69 6e 75 74 65 73 29 | 2e 0a 2e 54 50 0a 2d 6d |minutes)|...TP.-m|
|00004640| 20 6d 65 61 6e 5f 69 6e | 74 65 72 61 72 72 69 76 | mean_in|terarriv|
|00004650| 61 6c 0a 4d 65 61 6e 20 | 69 6e 74 65 72 61 72 72 |al.Mean |interarr|
|00004660| 69 76 61 6c 20 28 69 6e | 20 73 65 63 6f 6e 64 73 |ival (in| seconds|
|00004670| 29 20 6f 66 20 74 68 65 | 20 67 65 6e 65 72 61 74 |) of the| generat|
|00004680| 65 64 20 70 61 63 6b 65 | 74 73 2e 20 20 44 65 66 |ed packe|ts.  Def|
|00004690| 61 75 6c 74 20 69 73 20 | 31 0a 73 65 63 6f 6e 64 |ault is |1.second|
|000046a0| 2e 0a 2e 53 48 20 57 41 | 52 4e 49 4e 47 0a 2e 50 |...SH WA|RNING..P|
|000046b0| 50 0a 53 70 65 63 69 66 | 79 69 6e 67 20 61 6e 20 |P.Specif|ying an |
|000046c0| 75 6e 75 73 65 64 20 70 | 6f 72 74 20 6f 6e 20 74 |unused p|ort on t|
|000046d0| 68 65 20 72 65 6d 6f 74 | 65 20 6d 61 63 68 69 6e |he remot|e machin|
|000046e0| 65 20 63 61 6e 20 72 65 | 73 75 6c 74 20 69 6e 20 |e can re|sult in |
|000046f0| 61 0a 70 72 6f 6c 69 66 | 65 72 61 74 69 6f 6e 20 |a.prolif|eration |
|00004700| 6f 66 20 49 43 4d 50 20 | 22 61 64 64 72 65 73 73 |of ICMP |"address|
|00004710| 20 75 6e 61 76 61 69 6c | 61 62 6c 65 22 20 6d 65 | unavail|able" me|
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|000054e0| 20 68 6f 73 74 20 61 64 | 64 72 65 73 73 20 69 66 | host ad|dress if|
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|00005500| 65 72 20 2a 2f 0a 20 20 | 20 20 63 68 61 72 20 20 |er */.  |  char  |
|00005510| 6c 6f 63 61 6c 5f 68 6f | 73 74 5b 31 32 38 5d 3b |local_ho|st[128];|
|00005520| 0a 0a 0a 20 20 20 20 28 | 76 6f 69 64 29 73 74 72 |...    (|void)str|
|00005530| 63 70 79 28 72 65 6d 6f | 74 65 5f 68 6f 73 74 2c |cpy(remo|te_host,|
|00005540| 20 22 6c 6f 63 61 6c 68 | 6f 73 74 22 29 3b 0a 20 | "localh|ost");. |
|00005550| 20 20 20 72 65 6d 6f 74 | 65 5f 70 6f 72 74 20 3d |   remot|e_port =|
|00005560| 20 28 75 5f 73 68 6f 72 | 74 29 39 3b 0a 20 20 20 | (u_shor|t)9;.   |
|00005570| 20 6d 65 61 6e 5f 69 6e | 74 65 72 61 72 72 69 76 | mean_in|terarriv|
|00005580| 61 6c 20 3d 20 31 30 30 | 30 30 30 30 4c 3b 0a 20 |al = 100|0000L;. |
|00005590| 20 20 20 64 75 72 61 74 | 69 6f 6e 20 3d 20 38 36 |   durat|ion = 86|
|000055a0| 37 30 30 4c 3b 0a 20 20 | 20 20 76 65 72 62 6f 73 |700L;.  |  verbos|
|000055b0| 65 20 3d 20 30 3b 0a 0a | 20 20 20 20 2f 2a 0a 20 |e = 0;..|    /*. |
|000055c0| 20 20 20 2a 2a 20 70 61 | 72 73 65 20 74 68 65 20 |   ** pa|rse the |
|000055d0| 63 6f 6d 6d 61 6e 64 20 | 6c 69 6e 65 20 66 6f 72 |command |line for|
|000055e0| 20 61 6e 79 20 64 65 66 | 61 75 6c 74 20 6f 76 65 | any def|ault ove|
|000055f0| 72 72 69 64 65 73 0a 20 | 20 20 20 2a 2f 0a 20 20 |rrides. |   */.  |
|00005600| 20 20 28 76 6f 69 64 29 | 70 61 72 73 65 5f 63 6f |  (void)|parse_co|
|00005610| 6d 6d 61 6e 64 5f 6c 69 | 6e 65 28 61 72 67 63 2c |mmand_li|ne(argc,|
|00005620| 20 61 72 67 76 2c 20 72 | 65 6d 6f 74 65 5f 68 6f | argv, r|emote_ho|
|00005630| 73 74 2c 0a 20 20 20 20 | 20 20 26 72 65 6d 6f 74 |st,.    |  &remot|
|00005640| 65 5f 70 6f 72 74 2c 20 | 26 6d 65 61 6e 5f 69 6e |e_port, |&mean_in|
|00005650| 74 65 72 61 72 72 69 76 | 61 6c 2c 20 26 64 75 72 |terarriv|al, &dur|
|00005660| 61 74 69 6f 6e 2c 20 26 | 76 65 72 62 6f 73 65 29 |ation, &|verbose)|
|00005670| 3b 0a 20 20 20 20 0a 20 | 20 20 20 2f 2a 0a 20 20 |;.    . |   /*.  |
|00005680| 20 20 2a 2a 20 69 6e 73 | 74 61 6c 6c 20 74 68 65 |  ** ins|tall the|
|00005690| 20 73 69 67 6e 61 6c 20 | 68 61 6e 64 6c 65 72 0a | signal |handler.|
|000056a0| 20 20 20 20 2a 2f 0a 20 | 20 20 20 28 76 6f 69 64 |    */. |   (void|
|000056b0| 29 73 69 67 6e 61 6c 28 | 53 49 47 48 55 50 2c 20 |)signal(|SIGHUP, |
|000056c0| 73 69 67 6e 61 6c 5f 68 | 61 6e 64 6c 65 72 29 3b |signal_h|andler);|
|000056d0| 0a 20 20 20 20 28 76 6f | 69 64 29 73 69 67 6e 61 |.    (vo|id)signa|
|000056e0| 6c 28 53 49 47 49 4e 54 | 2c 20 73 69 67 6e 61 6c |l(SIGINT|, signal|
|000056f0| 5f 68 61 6e 64 6c 65 72 | 29 3b 0a 20 20 20 20 28 |_handler|);.    (|
|00005700| 76 6f 69 64 29 73 69 67 | 6e 61 6c 28 53 49 47 51 |void)sig|nal(SIGQ|
|00005710| 55 49 54 2c 20 73 69 67 | 6e 61 6c 5f 68 61 6e 64 |UIT, sig|nal_hand|
|00005720| 6c 65 72 29 3b 0a 20 20 | 20 20 28 76 6f 69 64 29 |ler);.  |  (void)|
|00005730| 73 69 67 6e 61 6c 28 53 | 49 47 54 45 52 4d 2c 20 |signal(S|IGTERM, |
|00005740| 73 69 67 6e 61 6c 5f 68 | 61 6e 64 6c 65 72 29 3b |signal_h|andler);|
|00005750| 0a 0a 20 20 20 20 2f 2a | 0a 20 20 20 20 2a 2a 20 |..    /*|.    ** |
|00005760| 73 65 74 20 75 70 20 73 | 6f 63 6b 65 74 20 74 6f |set up s|ocket to|
|00005770| 20 73 65 6e 64 20 6f 6e | 0a 20 20 20 20 2a 2f 0a | send on|.    */.|
|00005780| 20 20 20 20 69 66 20 28 | 28 73 20 3d 20 73 6f 63 |    if (|(s = soc|
|00005790| 6b 65 74 28 41 46 5f 49 | 4e 45 54 2c 20 53 4f 43 |ket(AF_I|NET, SOC|
|000057a0| 4b 5f 44 47 52 41 4d 2c | 20 30 29 29 20 3c 20 30 |K_DGRAM,| 0)) < 0|
|000057b0| 29 20 7b 0a 20 20 70 65 | 72 72 6f 72 28 22 67 65 |) {.  pe|rror("ge|
|000057c0| 6e 65 72 61 74 6f 72 3a | 20 73 6f 63 6b 65 74 22 |nerator:| socket"|
|000057d0| 29 3b 0a 20 20 65 78 69 | 74 28 31 29 3b 0a 20 20 |);.  exi|t(1);.  |
|000057e0| 20 20 7d 0a 0a 20 20 20 | 20 2f 2a 0a 20 20 20 20 |  }..   | /*.    |
|000057f0| 2a 2a 20 67 65 74 20 74 | 68 65 20 6c 6f 63 61 6c |** get t|he local|
|00005800| 20 68 6f 73 74 73 20 6e | 61 6d 65 0a 20 20 20 20 | hosts n|ame.    |
|00005810| 2a 2f 0a 20 20 20 20 69 | 66 20 28 67 65 74 68 6f |*/.    i|f (getho|
|00005820| 73 74 6e 61 6d 65 28 6c | 6f 63 61 6c 5f 68 6f 73 |stname(l|ocal_hos|
|00005830| 74 2c 20 73 69 7a 65 6f | 66 28 6c 6f 63 61 6c 5f |t, sizeo|f(local_|
|00005840| 68 6f 73 74 29 29 20 3d | 3d 20 2d 31 29 20 7b 0a |host)) =|= -1) {.|
|00005850| 20 20 20 20 20 20 20 20 | 70 65 72 72 6f 72 28 22 |        |perror("|
|00005860| 67 65 6e 65 72 61 74 6f | 72 3a 20 67 65 74 68 6f |generato|r: getho|
|00005870| 73 74 6e 61 6d 65 20 66 | 61 69 6c 65 64 22 29 3b |stname f|ailed");|
|00005880| 0a 20 20 20 20 20 20 20 | 20 65 78 69 74 28 31 29 |.       | exit(1)|
|00005890| 3b 0a 20 20 20 20 7d 0a | 0a 20 20 20 20 2f 2a 0a |;.    }.|.    /*.|
|000058a0| 20 20 20 20 2a 2a 20 6f | 70 65 6e 20 74 68 65 20 |    ** o|pen the |
|000058b0| 6c 6f 67 20 66 69 6c 65 | 0a 20 20 20 20 2a 2f 0a |log file|.    */.|
|000058c0| 20 20 20 20 6c 6f 67 5f | 66 69 6c 65 5f 66 70 20 |    log_|file_fp |
|000058d0| 3d 20 66 6f 70 65 6e 28 | 6c 6f 63 61 6c 5f 68 6f |= fopen(|local_ho|
|000058e0| 73 74 2c 20 22 77 22 29 | 3b 0a 20 20 20 20 69 66 |st, "w")|;.    if|
|000058f0| 20 28 21 6c 6f 67 5f 66 | 69 6c 65 5f 66 70 29 20 | (!log_f|ile_fp) |
|00005900| 7b 0a 20 20 20 20 20 20 | 20 20 28 76 6f 69 64 29 |{.      |  (void)|
|00005910| 66 70 72 69 6e 74 66 28 | 73 74 64 65 72 72 2c 20 |fprintf(|stderr, |
|00005920| 22 63 6f 75 6c 64 20 6e | 6f 74 20 6f 70 65 6e 20 |"could n|ot open |
|00005930| 6c 6f 67 20 66 69 6c 65 | 20 25 73 5c 6e 22 2c 20 |log file| %s\n", |
|00005940| 6c 6f 63 61 6c 5f 68 6f | 73 74 29 3b 0a 20 20 20 |local_ho|st);.   |
|00005950| 20 20 20 20 20 65 78 69 | 74 28 31 29 3b 0a 20 20 |     exi|t(1);.  |
|00005960| 20 20 7d 0a 0a 20 20 20 | 20 2f 2a 0a 20 20 20 20 |  }..   | /*.    |
|00005970| 2a 2a 20 67 65 74 20 74 | 68 65 20 68 6f 73 74 20 |** get t|he host |
|00005980| 65 6e 74 72 79 20 73 74 | 72 75 63 74 75 72 65 20 |entry st|ructure |
|00005990| 75 73 69 6e 67 20 74 68 | 65 20 6c 6f 6f 6b 65 64 |using th|e looked|
|000059a0| 20 75 70 20 6e 61 6d 65 | 0a 20 20 20 20 2a 2f 0a | up name|.    */.|
|000059b0| 20 20 20 20 69 66 20 28 | 28 68 70 20 3d 20 67 65 |    if (|(hp = ge|
|000059c0| 74 68 6f 73 74 62 79 6e | 61 6d 65 28 6c 6f 63 61 |thostbyn|ame(loca|
|000059d0| 6c 5f 68 6f 73 74 29 29 | 20 3d 3d 20 28 73 74 72 |l_host))| == (str|
|000059e0| 75 63 74 20 68 6f 73 74 | 65 6e 74 20 2a 29 4e 55 |uct host|ent *)NU|
|000059f0| 4c 4c 29 20 7b 0a 20 20 | 20 20 20 20 20 20 70 65 |LL) {.  |      pe|
|00005a00| 72 72 6f 72 28 22 67 65 | 6e 65 72 61 74 6f 72 3a |rror("ge|nerator:|
|00005a10| 20 67 65 74 68 6f 73 74 | 62 79 6e 61 6d 65 20 66 | gethost|byname f|
|00005a20| 61 69 6c 65 64 22 29 3b | 0a 20 20 20 20 20 20 20 |ailed");|.       |
|00005a30| 20 65 78 69 74 28 31 29 | 3b 0a 20 20 20 20 7d 0a | exit(1)|;.    }.|
|00005a40| 0a 20 20 20 20 2f 2a 0a | 20 20 20 20 2a 2a 20 62 |.    /*.|    ** b|
|00005a50| 69 6e 64 20 6c 6f 63 61 | 6c 20 61 64 64 72 65 73 |ind loca|l addres|
|00005a60| 73 0a 20 20 20 20 2a 2f | 0a 20 20 20 20 62 7a 65 |s.    */|.    bze|
|00005a70| 72 6f 28 28 63 68 61 72 | 20 2a 29 26 73 69 6e 2c |ro((char| *)&sin,|
|00005a80| 20 73 69 7a 65 6f 66 28 | 73 69 6e 29 29 3b 0a 20 | sizeof(|sin));. |
|00005a90| 20 20 20 73 69 6e 2e 73 | 69 6e 5f 66 61 6d 69 6c |   sin.s|in_famil|
|00005aa0| 79 20 3d 20 68 70 2d 3e | 68 5f 61 64 64 72 74 79 |y = hp->|h_addrty|
|00005ab0| 70 65 3b 0a 20 20 20 20 | 73 69 6e 2e 73 69 6e 5f |pe;.    |sin.sin_|
|00005ac0| 70 6f 72 74 20 3d 20 68 | 74 6f 6e 73 28 72 65 6d |port = h|tons(rem|
|00005ad0| 6f 74 65 5f 70 6f 72 74 | 29 3b 0a 20 20 20 20 62 |ote_port|);.    b|
|00005ae0| 63 6f 70 79 28 68 70 2d | 3e 68 5f 61 64 64 72 2c |copy(hp-|>h_addr,|
|00005af0| 20 28 63 68 61 72 20 2a | 29 26 73 69 6e 2e 73 69 | (char *|)&sin.si|
|00005b00| 6e 5f 61 64 64 72 2c 20 | 68 70 2d 3e 68 5f 6c 65 |n_addr, |hp->h_le|
|00005b10| 6e 67 74 68 29 3b 0a 2f | 2a 20 20 20 20 69 66 20 |ngth);./|*    if |
|00005b20| 28 62 69 6e 64 28 73 2c | 20 28 73 74 72 75 63 74 |(bind(s,| (struct|
|00005b30| 20 73 6f 63 6b 61 64 64 | 72 20 2a 29 26 73 69 6e | sockadd|r *)&sin|
|00005b40| 2c 20 73 69 7a 65 6f 66 | 28 73 69 6e 29 29 20 3c |, sizeof|(sin)) <|
|00005b50| 20 30 29 20 7b 0a 20 20 | 70 65 72 72 6f 72 28 22 | 0) {.  |perror("|
|00005b60| 67 65 6e 65 72 61 74 6f | 72 3a 20 62 69 6e 64 20 |generato|r: bind |
|00005b70| 66 61 69 6c 65 64 22 29 | 3b 0a 20 20 65 78 69 74 |failed")|;.  exit|
|00005b80| 28 31 29 3b 0a 20 20 20 | 20 7d 20 2a 2f 0a 20 20 |(1);.   | } */.  |
|00005b90| 20 20 62 7a 65 72 6f 28 | 28 63 68 61 72 20 2a 29 |  bzero(|(char *)|
|00005ba0| 26 73 69 6e 2c 20 73 69 | 7a 65 6f 66 28 73 69 6e |&sin, si|zeof(sin|
|00005bb0| 29 29 3b 0a 0a 20 20 20 | 20 2f 2a 0a 20 20 20 20 |));..   | /*.    |
|00005bc0| 2a 2a 20 67 65 74 20 74 | 68 65 20 72 65 6d 6f 74 |** get t|he remot|
|00005bd0| 65 20 68 6f 73 74 20 61 | 64 64 72 65 73 73 0a 20 |e host a|ddress. |
|00005be0| 20 20 20 2a 2f 0a 20 20 | 20 20 69 66 20 28 28 69 |   */.  |  if ((i|
|00005bf0| 6e 74 29 28 68 6f 73 74 | 5f 6e 75 6d 20 3d 20 69 |nt)(host|_num = i|
|00005c00| 6e 65 74 5f 61 64 64 72 | 28 72 65 6d 6f 74 65 5f |net_addr|(remote_|
|00005c10| 68 6f 73 74 29 29 20 3d | 3d 20 2d 31 29 20 7b 0a |host)) =|= -1) {.|
|00005c20| 20 20 20 20 20 20 20 20 | 69 66 20 28 28 68 70 20 |        |if ((hp |
|00005c30| 3d 20 67 65 74 68 6f 73 | 74 62 79 6e 61 6d 65 28 |= gethos|tbyname(|
|00005c40| 72 65 6d 6f 74 65 5f 68 | 6f 73 74 29 29 20 3d 3d |remote_h|ost)) ==|
|00005c50| 20 28 73 74 72 75 63 74 | 20 68 6f 73 74 65 6e 74 | (struct| hostent|
|00005c60| 20 2a 29 4e 55 4c 4c 29 | 20 7b 0a 20 20 20 20 20 | *)NULL)| {.     |
|00005c70| 20 20 20 20 20 20 20 66 | 70 72 69 6e 74 66 28 73 |       f|printf(s|
|00005c80| 74 64 65 72 72 2c 20 22 | 67 65 6e 65 72 61 74 6f |tderr, "|generato|
|00005c90| 72 3a 20 25 73 20 75 6e | 6b 6e 6f 77 6e 20 68 6f |r: %s un|known ho|
|00005ca0| 73 74 5c 6e 22 2c 20 72 | 65 6d 6f 74 65 5f 68 6f |st\n", r|emote_ho|
|00005cb0| 73 74 29 3b 0a 20 20 20 | 20 20 20 20 20 20 20 20 |st);.   |        |
|00005cc0| 20 65 78 69 74 28 31 29 | 3b 0a 20 20 20 20 20 20 | exit(1)|;.      |
|00005cd0| 20 20 7d 0a 20 20 20 20 | 20 20 20 20 62 63 6f 70 |  }.    |    bcop|
|00005ce0| 79 28 68 70 2d 3e 68 5f | 61 64 64 72 2c 20 28 63 |y(hp->h_|addr, (c|
|00005cf0| 68 61 72 20 2a 29 26 73 | 69 6e 2e 73 69 6e 5f 61 |har *)&s|in.sin_a|
|00005d00| 64 64 72 2c 20 68 70 2d | 3e 68 5f 6c 65 6e 67 74 |ddr, hp-|>h_lengt|
|00005d10| 68 29 3b 0a 20 20 20 20 | 20 20 20 20 73 69 6e 2e |h);.    |    sin.|
|00005d20| 73 69 6e 5f 66 61 6d 69 | 6c 79 20 3d 20 68 70 2d |sin_fami|ly = hp-|
|00005d30| 3e 68 5f 61 64 64 72 74 | 79 70 65 3b 0a 20 20 20 |>h_addrt|ype;.   |
|00005d40| 20 7d 0a 20 20 20 20 65 | 6c 73 65 20 7b 0a 20 20 | }.    e|lse {.  |
|00005d50| 62 63 6f 70 79 28 28 63 | 68 61 72 20 2a 29 26 68 |bcopy((c|har *)&h|
|00005d60| 6f 73 74 5f 6e 75 6d 2c | 20 28 63 68 61 72 20 2a |ost_num,| (char *|
|00005d70| 29 26 73 69 6e 2e 73 69 | 6e 5f 61 64 64 72 2c 20 |)&sin.si|n_addr, |
|00005d80| 73 69 7a 65 6f 66 28 68 | 6f 73 74 5f 6e 75 6d 29 |sizeof(h|ost_num)|
|00005d90| 29 3b 0a 20 20 73 69 6e | 2e 73 69 6e 5f 66 61 6d |);.  sin|.sin_fam|
|00005da0| 69 6c 79 20 3d 20 41 46 | 5f 49 4e 45 54 3b 0a 20 |ily = AF|_INET;. |
|00005db0| 20 20 20 7d 0a 20 20 20 | 20 73 69 6e 2e 73 69 6e |   }.   | sin.sin|
|00005dc0| 5f 70 6f 72 74 20 3d 20 | 68 74 6f 6e 73 28 72 65 |_port = |htons(re|
|00005dd0| 6d 6f 74 65 5f 70 6f 72 | 74 29 3b 0a 0a 20 20 20 |mote_por|t);..   |
|00005de0| 20 2f 2a 0a 20 20 20 20 | 2a 2a 20 70 72 69 6e 74 | /*.    |** print|
|00005df0| 20 74 68 65 20 73 74 61 | 72 74 20 74 69 6d 65 0a | the sta|rt time.|
|00005e00| 20 20 20 20 2a 2f 0a 20 | 20 20 20 69 66 20 28 28 |    */. |   if ((|
|00005e10| 64 61 74 65 5f 66 70 20 | 3d 20 70 6f 70 65 6e 28 |date_fp |= popen(|
|00005e20| 22 64 61 74 65 22 2c 20 | 22 72 22 29 29 20 3d 3d |"date", |"r")) ==|
|00005e30| 20 4e 55 4c 4c 29 20 7b | 0a 20 20 20 20 20 20 20 | NULL) {|.       |
|00005e40| 20 70 65 72 72 6f 72 28 | 22 70 6f 70 65 6e 28 64 | perror(|"popen(d|
|00005e50| 61 74 65 29 22 29 3b 0a | 20 20 20 20 7d 20 65 6c |ate)");.|    } el|
|00005e60| 73 65 20 7b 0a 20 20 20 | 20 20 20 20 20 28 76 6f |se {.   |     (vo|
|00005e70| 69 64 29 66 67 65 74 73 | 28 64 61 74 65 2c 20 73 |id)fgets|(date, s|
|00005e80| 69 7a 65 6f 66 28 64 61 | 74 65 29 2c 20 64 61 74 |izeof(da|te), dat|
|00005e90| 65 5f 66 70 29 3b 0a 20 | 20 20 20 20 20 20 20 70 |e_fp);. |       p|
|00005ea0| 63 6c 6f 73 65 28 64 61 | 74 65 5f 66 70 29 3b 0a |close(da|te_fp);.|
|00005eb0| 20 20 20 20 20 20 20 20 | 66 70 72 69 6e 74 66 28 |        |fprintf(|
|00005ec0| 6c 6f 67 5f 66 69 6c 65 | 5f 66 70 2c 20 22 53 74 |log_file|_fp, "St|
|00005ed0| 61 72 74 20 54 69 6d 65 | 3a 20 25 73 5c 6e 22 2c |art Time|: %s\n",|
|00005ee0| 20 64 61 74 65 29 3b 0a | 20 20 20 20 7d 0a 20 20 | date);.|    }.  |
|00005ef0| 20 20 66 70 72 69 6e 74 | 66 28 6c 6f 67 5f 66 69 |  fprint|f(log_fi|
|00005f00| 6c 65 5f 66 70 2c 20 22 | 5c 74 6c 6f 63 61 6c 20 |le_fp, "|\tlocal |
|00005f10| 68 6f 73 74 20 3d 20 25 | 73 5c 6e 22 2c 20 6c 6f |host = %|s\n", lo|
|00005f20| 63 61 6c 5f 68 6f 73 74 | 29 3b 0a 20 20 20 20 66 |cal_host|);.    f|
|00005f30| 70 72 69 6e 74 66 28 6c | 6f 67 5f 66 69 6c 65 5f |printf(l|og_file_|
|00005f40| 66 70 2c 20 22 5c 74 72 | 65 6d 6f 74 65 20 68 6f |fp, "\tr|emote ho|
|00005f50| 73 74 20 3d 20 25 73 5c | 6e 22 2c 20 72 65 6d 6f |st = %s\|n", remo|
|00005f60| 74 65 5f 68 6f 73 74 29 | 3b 0a 20 20 20 20 66 70 |te_host)|;.    fp|
|00005f70| 72 69 6e 74 66 28 6c 6f | 67 5f 66 69 6c 65 5f 66 |rintf(lo|g_file_f|
|00005f80| 70 2c 20 22 5c 74 72 65 | 6d 6f 74 65 20 70 6f 72 |p, "\tre|mote por|
|00005f90| 74 20 3d 20 25 64 5c 6e | 22 2c 20 72 65 6d 6f 74 |t = %d\n|", remot|
|00005fa0| 65 5f 70 6f 72 74 29 3b | 0a 20 20 20 20 66 70 72 |e_port);|.    fpr|
|00005fb0| 69 6e 74 66 28 6c 6f 67 | 5f 66 69 6c 65 5f 66 70 |intf(log|_file_fp|
|00005fc0| 2c 20 22 5c 74 6d 65 61 | 6e 20 69 6e 74 65 72 61 |, "\tmea|n intera|
|00005fd0| 72 72 69 76 61 6c 20 3d | 20 25 75 20 28 75 73 65 |rrival =| %u (use|
|00005fe0| 63 29 5c 6e 22 2c 20 6d | 65 61 6e 5f 69 6e 74 65 |c)\n", m|ean_inte|
|00005ff0| 72 61 72 72 69 76 61 6c | 29 3b 0a 20 20 20 20 66 |rarrival|);.    f|
|00006000| 70 72 69 6e 74 66 28 6c | 6f 67 5f 66 69 6c 65 5f |printf(l|og_file_|
|00006010| 66 70 2c 20 22 5c 74 64 | 75 72 61 74 69 6f 6e 20 |fp, "\td|uration |
|00006020| 3d 20 25 6c 64 20 28 73 | 65 63 29 5c 6e 22 2c 20 |= %ld (s|ec)\n", |
|00006030| 64 75 72 61 74 69 6f 6e | 29 3b 0a 20 20 20 20 66 |duration|);.    f|
|00006040| 70 72 69 6e 74 66 28 6c | 6f 67 5f 66 69 6c 65 5f |printf(l|og_file_|
|00006050| 66 70 2c 20 22 5c 6e 22 | 29 3b 0a 20 20 20 20 66 |fp, "\n"|);.    f|
|00006060| 66 6c 75 73 68 28 6c 6f | 67 5f 66 69 6c 65 5f 66 |flush(lo|g_file_f|
|00006070| 70 29 3b 0a 0a 0a 20 20 | 20 20 2f 2a 0a 20 20 20 |p);...  |  /*.   |
|00006080| 20 2a 2a 20 73 65 6e 64 | 20 70 61 63 6b 65 74 73 | ** send| packets|
|00006090| 20 28 66 6f 72 65 76 65 | 72 29 0a 20 20 20 20 2a | (foreve|r).    *|
|000060a0| 2f 0a 20 20 20 20 73 65 | 6e 64 5f 74 6f 74 61 6c |/.    se|nd_total|
|000060b0| 20 3d 20 30 3b 0a 20 20 | 20 20 67 65 74 74 69 6d | = 0;.  |  gettim|
|000060c0| 65 6f 66 64 61 79 28 26 | 6e 6f 77 2c 20 4e 55 4c |eofday(&|now, NUL|
|000060d0| 4c 29 3b 0a 20 20 20 20 | 73 74 61 72 74 74 69 6d |L);.    |starttim|
|000060e0| 65 20 3d 20 6e 6f 77 3b | 0a 20 20 20 20 77 68 69 |e = now;|.    whi|
|000060f0| 6c 65 20 28 6e 6f 77 2e | 74 76 5f 73 65 63 20 2d |le (now.|tv_sec -|
|00006100| 20 73 74 61 72 74 74 69 | 6d 65 2e 74 76 5f 73 65 | startti|me.tv_se|
|00006110| 63 20 3c 20 64 75 72 61 | 74 69 6f 6e 29 20 7b 0a |c < dura|tion) {.|
|00006120| 0a 20 20 20 20 20 20 2f | 2a 0a 20 20 20 20 20 20 |.      /|*.      |
|00006130| 2a 2a 20 73 65 6e 64 20 | 6e 65 78 74 20 55 44 50 |** send |next UDP|
|00006140| 20 70 61 63 6b 65 74 0a | 20 20 20 20 20 20 2a 2f | packet.|      */|
|00006150| 0a 20 20 20 20 20 20 69 | 66 20 28 73 65 6e 64 74 |.      i|f (sendt|
|00006160| 6f 28 73 2c 20 28 63 68 | 61 72 20 2a 29 4e 55 4c |o(s, (ch|ar *)NUL|
|00006170| 4c 2c 20 30 2c 20 30 2c | 20 0a 20 20 20 20 20 20 |L, 0, 0,| .      |
|00006180| 20 20 28 73 74 72 75 63 | 74 20 73 6f 63 6b 61 64 |  (struc|t sockad|
|00006190| 64 72 20 2a 29 26 73 69 | 6e 2c 20 73 69 7a 65 6f |dr *)&si|n, sizeo|
|000061a0| 66 28 73 69 6e 29 29 20 | 3c 20 30 29 20 7b 0a 20 |f(sin)) |< 0) {. |
|000061b0| 20 20 20 20 20 20 20 20 | 20 70 65 72 72 6f 72 28 |        | perror(|
|000061c0| 22 67 65 6e 65 72 61 74 | 65 3a 20 73 65 6e 64 74 |"generat|e: sendt|
|000061d0| 6f 22 29 3b 0a 20 20 20 | 20 20 20 20 20 20 20 66 |o");.   |       f|
|000061e0| 70 72 69 6e 74 66 28 6c | 6f 67 5f 66 69 6c 65 5f |printf(l|og_file_|
|000061f0| 66 70 2c 20 22 73 65 6e | 64 74 6f 28 29 20 66 61 |fp, "sen|dto() fa|
|00006200| 69 6c 65 64 5c 6e 22 29 | 3b 0a 20 20 20 20 20 20 |iled\n")|;.      |
|00006210| 20 20 20 20 65 78 69 74 | 28 31 29 3b 0a 20 20 20 |    exit|(1);.   |
|00006220| 20 20 20 7d 0a 20 20 20 | 20 20 20 73 65 6e 64 5f |   }.   |   send_|
|00006230| 74 6f 74 61 6c 2b 2b 3b | 0a 0a 20 20 20 20 20 20 |total++;|..      |
|00006240| 2f 2a 0a 20 20 20 20 20 | 20 2a 2a 20 73 6c 65 65 |/*.     | ** slee|
|00006250| 70 20 75 6e 74 69 6c 20 | 74 69 6d 65 20 74 6f 20 |p until |time to |
|00006260| 73 65 6e 64 20 6e 65 78 | 74 20 70 61 63 6b 65 74 |send nex|t packet|
|00006270| 0a 20 20 20 20 20 20 2a | 2f 0a 20 20 20 20 20 20 |.      *|/.      |
|00006280| 73 6c 65 65 70 5f 69 6e | 74 65 72 76 61 6c 2e 74 |sleep_in|terval.t|
|00006290| 76 5f 75 73 65 63 20 3d | 20 73 6c 65 65 70 5f 74 |v_usec =| sleep_t|
|000062a0| 69 6d 65 28 6d 65 61 6e | 5f 69 6e 74 65 72 61 72 |ime(mean|_interar|
|000062b0| 72 69 76 61 6c 29 3b 0a | 20 20 20 20 20 20 73 6c |rival);.|      sl|
|000062c0| 65 65 70 5f 69 6e 74 65 | 72 76 61 6c 2e 74 76 5f |eep_inte|rval.tv_|
|000062d0| 73 65 63 20 3d 20 73 6c | 65 65 70 5f 69 6e 74 65 |sec = sl|eep_inte|
|000062e0| 72 76 61 6c 2e 74 76 5f | 75 73 65 63 20 2f 20 31 |rval.tv_|usec / 1|
|000062f0| 30 30 30 30 30 30 4c 3b | 0a 20 20 20 20 20 20 73 |000000L;|.      s|
|00006300| 6c 65 65 70 5f 69 6e 74 | 65 72 76 61 6c 2e 74 76 |leep_int|erval.tv|
|00006310| 5f 75 73 65 63 20 3d 20 | 73 6c 65 65 70 5f 69 6e |_usec = |sleep_in|
|00006320| 74 65 72 76 61 6c 2e 74 | 76 5f 75 73 65 63 20 25 |terval.t|v_usec %|
|00006330| 20 31 30 30 30 30 30 30 | 4c 3b 0a 0a 20 20 20 20 | 1000000|L;..    |
|00006340| 20 20 69 66 20 28 76 65 | 72 62 6f 73 65 29 20 7b |  if (ve|rbose) {|
|00006350| 0a 20 20 20 20 20 20 20 | 20 20 20 70 72 69 6e 74 |.       |   print|
|00006360| 66 28 22 73 6c 65 65 70 | 20 74 69 6d 65 20 3d 20 |f("sleep| time = |
|00006370| 25 75 3a 25 75 5c 6e 22 | 2c 20 73 6c 65 65 70 5f |%u:%u\n"|, sleep_|
|00006380| 69 6e 74 65 72 76 61 6c | 2e 74 76 5f 73 65 63 2c |interval|.tv_sec,|
|00006390| 20 73 6c 65 65 70 5f 69 | 6e 74 65 72 76 61 6c 2e | sleep_i|nterval.|
|000063a0| 74 76 5f 75 73 65 63 29 | 3b 0a 20 20 20 20 20 20 |tv_usec)|;.      |
|000063b0| 7d 0a 20 20 20 20 20 20 | 20 73 65 6c 65 63 74 28 |}.      | select(|
|000063c0| 30 2c 20 30 2c 20 30 2c | 20 30 2c 20 26 73 6c 65 |0, 0, 0,| 0, &sle|
|000063d0| 65 70 5f 69 6e 74 65 72 | 76 61 6c 29 3b 0a 20 20 |ep_inter|val);.  |
|000063e0| 20 20 20 20 2f 2a 20 75 | 73 6c 65 65 70 28 73 6c |    /* u|sleep(sl|
|000063f0| 65 65 70 5f 69 6e 74 65 | 72 76 61 6c 29 3b 20 73 |eep_inte|rval); s|
+--------+-------------------------+-------------------------+--------+--------+