Int 61 Fn 0001  - Banyan Vines - "sosend" - Initiate Output Event          [N]

   AX = 0001h subfn 0002h
   DS:DX -> communications control block (function 0002h)

Return: AX = status (see below)

Note:  Banyan can use any interrupt from 60h through 66h.  The Banyan
     interrupt handler is identified by the string "BANV" in the four
     bytes immediately preceding the interrupt handler

See Also: AX=0001h/SF=0001h,AX=0001h/SF=0005h

Values for status:
 0000h successful
 0001h service not installed
 0002h invalid service ID
 0003h-000Ah reserved for BANV interface errors
 0097h invalid socket identifier
 009Bh destination node unreachable
 009Ch message overflow
 009Dh destination socket nonexistent
 00A2h no more buffer space
 00A3h timeout
 00B1h resource disconnect

Format of control block:
Offset Size    Description
 00h   WORD    0002h
 02h   WORD    pointer to argument block (see below)
 04h   WORD    error return code
       0000h successful
       0097h invalid socket ID
       00A2h no more buffer space
       00A3h timeout event
       00A5h resource not available
       00A6h internal communication failure
       00B1h resource disconnect
 06h  4 BYTEs  reserved

Format of argument block:
Offset Size    Description
 00h   WORD    routine metric
 02h   WORD    error return code
 04h   WORD    socket identifier
 06h   WORD    pointer to send buffer
 08h   WORD    length of send buffer
 0Ah   WORD    flags
       bit 0: async request
       bit 1: reliable message
       bit 3: end of user message received
       bit 4: vectored request (if set, send buffer contains buffer
           descriptors)
       bit 5: connection-specific receive
       bit 6: change to connection-specific receive mode
 0Ch 16 BYTEs  socket address (see below)
 1Ch   WORD    timeout value in multiples of 200ms
 1Eh   WORD    connection identifier
 20h   WORD    type of request
       0001h send message
       0002h establish a virtual connection
       0003h terminate a virtual connection

Format of buffer descriptor:
Offset Size    Description
 00h   WORD    data segment
 02h   WORD    buffer pointer
 04h   WORD    buffer length
 06h   WORD    character count

Format of socket address for unreliable datagrams:
Offset Size    Description
 00h   WORD    0003h     address family
 02h   DWORD   FFFFFFFFh network number
 06h   WORD    FFFFh     subnet number
 08h   WORD          local port number
 0Ah   BYTE    00h-0Fh   hop count
 0Bh  5 BYTEs  0000h     filler