[comp.unix.questions] Help with Sockets

esr@mrst.UUCP (Eric S. Rose) (07/14/87)

Hello there....

Can anyone help me with a problem involving sockets?

I have a simple server/client program where the server
could be present on any one of several machines on the 
Ethernet.

If a client does a 'connect' to a machine that does not have
the server, an error is returned ('ECONNREFUSED').  This is 
Ok, I'll try another.

The next time I get another error, ('EINVAL') even though this
time, it is trying to connect to the machine where the server 
really is.

If I close the socket connection *after* the bad connection,
re-open it, and try the connect on the new machine, it works
fine.

It seems that when connect fails, it changes some internal flags
that need to be reset.  Is there any way to make this not happen, 
or reset it?

I also tried:

	setsockopt ( sock, SOL_SOCKET, SO_REUSEADDR, (char *)0, 0);

As well as:

	x = 1;
	setsockopt ( sock, SOL_SOCKET, SO_REUSEADDR, &x, sizeof(x));

after the socket call and before the connect, but there was no
difference.

We don't have sources, and the documentation is pretty sketchy on
these areas.

Thanks in advance for any helpful hints....

			Eric


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