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CFSocketSetAddress failing

Hi,

I have a problem with my code which uses the CFSocket APIs.
• I listen on a port (with CFSocketSetAddress) and connect with a client. The client closes its connection and I close the listening socket. I can listen on the same port again - no problem in this case.
• I listen on a port and connect with a client and let my code disconnect the client. Then I close the listening socket. But when I try to listen on the same port again with a new socket, CFSocketSetAddress fails with kCFSocketError (wow, what a descriptive error :-).

After about a minute, I can listen on the port again after it fails. There seems to be a timeout of some kind. Even if I quit my program, I can't listen on the port after relaunching. I still have to wait for something to time out!

I have a few questions that I figure may clear up my mind on this issue.

1. What's the proper way for my program to close the connection to the client? Maybe I'm doing something wrong here. I call CFSocketInvalidate. I have not set any special flags for the socket, so the kCFSocketCloseOnInvalidate stuff shouldn't be the problem.

2. What's the proper way to stop a socket from listening? I use CFSocketInvalidate here too. I also loop through a saved list of all connected clients and close their connections first.

3. Any idea of what that timeout may be for? That could bring some hints to why I have this problem.

I have also tried to get the native socket handle and use close() on it (for both server and client), but that doesn't improve things.


Grateful for any help,

Tomas Franzén

Lighthead Software

http://www.lightheadsw.com/

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