On Wed, 10 Dec 2003, Bill Studenmund wrote:

> Since you're using a TCP socket, I'd suggest using read(), not recv().

Well, since I'm emulating the telnet protocol, I have to be able to
handle Out-of-Band data (flags argument=MSG_OOB), too, corresponding to
TCP's Urgent flag (unless I've made another blunder).  I don't see a
way to deal with MSG_OOB using read().

Anyway, I've managed to work around it by checking for retval==-1 and
errno==EAGAIN, and sending a Telnet IAC-NOP sequence to the client.
The write detects the broken socket and shuts things down on the server
side.

Thanks for the feedback.


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