Re: General socket question: Would server knows the connection hasbeen broken if client drop the connection without calling close()

Lim Hock-Chai wrote:
> That is kind of what I though it would happen.  However, we are
> encountering some problems where when client program ended abnormally
> without calling close() api, the server seems to be hanging on to the
> connection.  When we try to restart the client program we get the host
> refuses connection error.  We normally end up have to call the admin to
> clear the port to be able to reconnect again.

What do you mean 'clear the port'?

Sounds like some intermediary system is interfering with normal operation.

If your server is using select() or blocking on read() when the client
dies, it should get back a negative return code indicating that there
was an error with the connection.  If it's not, then it sounds to me
like something is maintaining the connection artificially.

Keep in mind, just about everything about sockets I know, I learned from
Scott. :)

david