=> R0 = 19 (event number)
R1 = Event reason
R2 = Depends on reason code
R3 = Depends on reason code
Internet event reasons
Code Meaning
1 Socket has input waiting to be read (R2 = socket, R3 = port)
2 An 'urgent' event has occured, eg. arrival of OOB data (R2 = socket, R3 = port)
3 Socket's connection has been broken (R2 = socket, R3 = port)
4 RevARP reply (R2 = IPv4 of replying server, R3 = IPv4 of requesting server)
5 RevARP request pre Internet module configuration (R2 = mbuf chain, R3 = interface's SWI base)
Urgent events equate to those which would be flagged as 'exception' from select() or Socket_Select. For TCP, this implies the arrival of OOB data.
Events 1 to 3 are raised only for sockets who have enabled it using Socket_Ioctl or ioctl() FIOASYNC. The port number is only given with Internet 5.04 or later versions.
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