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Int 15 Fn DE2E U - Desqview V2.50+ - Socket API [Q]
AX = DE2Eh
DX:BX -> socket record or 0000h:0000h to create a new socket record
Return: CX = size of socket record in bytes
DX:BX -> socket record which was used
Notes: DESQview 2.50-2.52 are distributed as part of DESQview/X v1.0x.
socket records are allocated from common memory
for Unix compatibility, each socket and connection on a socket is
allocated a DOS file handle (referencing an SFT for NUL) which is
used on various calls to specify which of possibly multiple
connections is to be operated upon
See Also: AX=DE2Dh,INT 61/AX=0001h"VINES",INT 63"DESQview"
Values for function number:
0000h initialize socket???
0001h "gethostname"
0002h "ioctl" check for input
0003h "sleep" delay for specified period
0004h "htons" convert word to network (big-endian) byte order
0005h "select"
0006h "bsd_close"/"so_close" close socket
0007h NOP
0008h "connect" initiate connection on socket
0009h "recv"/"recvfrom" read from socket
000Ah "socket"
000Bh ???
000Ch "gethostbyname"
000Dh "send"/"sendto" write to socket
000Eh ??? (does something to all connections for process)
000Fh "getpid" get process identifier
0010h "gettimeofday"
0011h "bind" assign name to socket
0012h "listen" listen for connections on socket
0013h "accept" accept connection on socket
0014h connect to X server
0015h "gethostbyaddr" get host information for an address
0016h "getprotobyname"
0017h "getprotobynumber"
0018h "getservbyname"
0019h "getservbyport"
001Ah "getsockname" determine name bound to socket
001Bh "getpeername" get name of connected peer
001Ch "getsockopt"/"setsockopt"
001Dh "so_exit" close all sockets for calling process
001Eh "issock" determine whether file handle references socket
001Fh "so_attach" reattach previously detached socket
0020h "so_detach" temporarily detach socket
0021h get DESQview directory
0022h "NewProc" start new application (see AX=102Ch)
0023h "so_linkup"
0024h canonicalize filename
0025h indirect INT 15h call
0026h Network Manager interface
0027h "so_unlink" close connection from "so_linkup"
0028h "raisepriority"
0029h "lowerpriority"
002Ah ???
FFFFh "NetExit" (appears to be a NOP)
Format of socket record:
Offset Size Description
00h WORD signature F0ADh
02h WORD function number (see above)
04h WORD returned error code (see below)
06h WORD maximum message size??? (usually 0400h)
08h WORD PSP segment to use or 0000h if socket not valid
0Ah WORD scratch space (JFT size)
0Ch DWORD scratch space (JFT address)
10h DWORD mailbox handle (initialized by function 0000h)
14h DWORD timer object handle (initialized by function 0000h)
---function 0000h---
18h WORD (return) ???
---function 0001h---
18h WORD (return) status???
1Ah 128 BYTEs (return) ASCIZ hostname (empty string if not on network)
9Ah WORD maximum length of hostname to return
---function 0002h---
18h WORD (return) status
1Ah WORD socket's file handle
1Ch WORD IOCTL function
05h "FIONREAD" determine available input
06h "FIONBIO" set blocking state of socket
1Eh WORD (return, subfn 05h) number of bytes available for reading
(call, subfn 06h) 0000h blocking, nonzero nonblocking
---function 0003h---
18h 2 BYTEs unused
1Ah WORD delay time in seconds
---function 0004h---
18h WORD (return) result in network (big-endian) byte order
1Ah WORD value to convert to network byte order
---function 0005h---
18h WORD (return) number of handles meeting the specified conditions???
1Ah WORD number of file handles in each bitset???
1Ch DWORD bitset of socket handles to check for readability???
20h DWORD bitset of socket handles to check for writability???
24h DWORD bitset of socket handles to check for errors???
28h WORD timeout in ??? or 0000h to block until some socket ready
2Ah DWORD ???
2Eh DWORD ???
---function 0006h---
18h WORD (return) status: 0000h if successful, FFFFh on error
1Ah WORD socket's file handle
---function 0008h---
18h WORD (return) status: 0000h if successful, FFFFh on error
1Ah WORD socket's file handle
1Ch WORD 0001h if socket name specified, 0000h if not
1Eh WORD length of socket name
20h N BYTEs name of socket to which to connect
---function 0009h---
18h WORD (return) number of bytes actually read, 0000h if connection
closed, or FFFFh on error
1Ah WORD socket's file handle
1Ch WORD number of bytes to read
1Eh WORD flags
20h WORD 0000h if no source address desired
0001h if source address is to be stored (datagram sockets)
22h WORD length of source address
24h 110 BYTEs source address
92h 1K BYTEs buffer for data to be read
---function 000Ah---
18h WORD (return) socket's file handle or FFFFh on error
1Ah WORD address family (0001h,0002h)
1Ch WORD socket type
1Eh WORD protocol
---function 000Bh---
18h WORD (return) 0001h if ??? or FFFFh on error
1Ah WORD socket's file handle
1Eh WORD (call) ???
---function 000Ch---
18h 128 BYTEs buffer containing ASCIZ hostname
special case if empty string or "unix"
98h ??? 'struct hostent' ???
A2h ??? (return) ???
---function 000Dh---
18h WORD (return) number of bytes actually written or FFFFh on error
1Ah WORD socket's file handle
1Ch WORD number of bytes to write
1Eh WORD number of bytes to follow in subsequent writes???
20h WORD flags
22h WORD 0000h if no destination specified, 0001h if destination present
24h WORD ???
26h WORD length of destination address
28h 110 BYTEs destination address
96h 1K BYTEs buffer containing data to be written
---function 000Eh---
no additional fields
---function 000Fh---
18h DWORD (return) DESQview task handle of calling process
---function 0010h---
18h DWORD (return) current time
1Ch DWORD (return) ???
---function 0011h---
18h WORD (return) status: 0000h if successful, FFFFh on error
1Ah WORD socket's file handle
1Ch WORD length of name
1Eh N BYTEs buffer for socket name
---function 0012h---
18h WORD (return) status: 0000h if successful, FFFFh on error
1Ah WORD socket's file handle
1Ch WORD maximum backlog of pending connections allowed on socket
---function 0013h---
18h WORD (return) file handle for new connection or FFFFh on error
1Ah WORD listen()ing socket's file handle
1Ch WORD (call) length of buffer for connecting entity's address
(return) actual length of address
1Eh N BYTEs buffer for connecting entity's address
---function 0014h---
18h WORD (return) socket's file handle or FFFFh on error
1Ah 4 BYTEs (return) ???
1Eh WORD (return) ???
20h WORD (return) ???
22h 256 BYTEs ASCIZ X display name
122h ???
---function 0015h---
18h WORD (call) type of address??? (test for 0001h seen)
1Ah WORD (call) length of buffer for host address
1Ch 110 BYTEs buffer containing host address
8Ah WORD (return) offset of official host name???
8Ch WORD (return) offset of alias list???
8Eh WORD (return) address type???
90h WORD (return) length of an address in bytes???
92h WORD (return) offset of address???
9Ah N BYTEs (return) ??? buffer for hostname, alias list, and host address
---function 0016h---
18h ??? buffer for protocol name???
98h ???
---function 0017h---
18h WORD (call) protocol number???
1Ah WORD (return) ??? or 0001h
---function 0018h---
18h 128 BYTEs buffer containing ???
98h 128 BYTEs buffer containing ???
118h WORD (return) ???
---function 0019h---
18h WORD length of name???
1Ah 128 BYTEs buffer for name???
9Ah WORD (return) ???
---function 001Ah---
18h WORD (return) 0000h if successful, FFFFh on error
1Ah WORD socket's file handle
1Ch WORD (call) length of buffer for socket name
(return) actual length of socket name
1Eh N BYTEs buffer for socket name
---function 001Bh---
18h WORD (return) status: 0000h if successful, FFFFh on error
1Ah WORD socket's file handle
1Ch WORD (call) size of buffer for name
(return) actual size of name
1Eh N BYTEs buffer for peer's name
---function 001Ch---
18h WORD (return) status: 0000h if successful, FFFFh on error
1Ah WORD direction: 0000h to get, 0001h to set
1Ch WORD socket's file handle
1Eh WORD option level
20h WORD option name
22h WORD (call) length of buffer for option value
(return) actual length of option value
24h N BYTEs buffer for option value
---function 001Dh---
no additional fields
---function 001Eh---
18h WORD (return) status: 0000h ??? or 0001h ???
1Ah WORD file handle which may or may not be a socket
---function 001Fh---
18h WORD (return) file handle or FFFFh on error
1Ah DWORD (call) pointer to Socket Context Record (see below) of a
previously detached socket
---function 0020h---
18h WORD (return) status: 0000h if successful or FFFFh on error
1Ah WORD socket's file handle
1Ch DWORD (return) pointer to Socket Context Record (see below) for
the file handle
---function 0021h---
18h 64 BYTEs buffer for DESQview startup directory (see AX=DE25h)
---function 0022h---
18h DWORD (return) task handle of new application
1Ch WORD size of .DVP data
1Eh 129 BYTEs ASCIZ ???
9Fh N BYTEs .DVP data (see AX=102Ch)
---function 0023h---
18h WORD (return) ??? or FFFFh on error
1Ah WORD socket's file handle???
---function 0024h---
18h WORD (return) DOS error code (see INT 21/AH=59h)
0000h if successful
1Ah 129 BYTEs ASCIZ filename/pathname
11Bh 129 BYTEs ASCIZ canonicalized filename/pathname (see INT 21/AH=60h)
---function 0025h---
18h WORD value of AX
1Ah WORD value of BX
1Ch WORD (call) value of CX for call if AH value other than 12h
(call) number of stack parameters if AH value is 12h
(return) returned CX for calls other than INT 15/AH=12h
1Eh WORD value of DX
20h WORD value of DI
22h WORD value of SI
24h WORD value of DS
26h WORD value of ES
28h WORD (return) value of FLAGS after call
2Ah N DWORDs (call) stack parameters for INT 15/AH=12h call
(return) stack results from INT 15/AH=12h call
---function 0026h---
18h WORD (call) Network Manager subfunction (see below)
(return) status???
1Ah WORD (call) size of parameter data
(return) size of returned data
1Ch N BYTEs (call) parameter data required by call (see below)
(return) result data (see below)
---function 0027h---
18h WORD (return) status: 0000h if successful, FFFFh on error
1Ah WORD socket's file handle
---functions 0028h,0029h---
18h WORD (call) file handle for which to set priority low/high
FFFFh to change calling task's priority
---function 002Ah---
no additional fields
Values for Network Manager subfunction:
0004h "so_exit"???
0005h "gethostbyname"
0006h "gethostname"
0009h "socket"
000Dh "gethostbyaddr"
000Fh "getprotobyname"
0010h get protocol name for protocol number
0011h "getservbyname"
0012h "getservbyport"
0013h "getsockname"???
0016h ???
0017h kill Network Manager
0018h "getpeername"???
0019h ??? (called by socket function 0000h)
001Ah ???
001Bh "so_linkup"
001Dh get network services
001Fh "getpwuid"
0020h "getpwnam"
0021h "getpwvar"
0022h "crypt"
0023h "so_unlink"
0024h "getlogin"
0028h "sethostent"
0029h "gethostent"
002Ah "soaddhost"
002Bh "soupdatehost"
002Ch "sodeletehost"
002Dh "setservent"
002Eh "getservent"
002Fh "setpwent"
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