Getting Un-used port in MFC

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Hi guys,

I want to get the unused ports in my system for my CSOcket server because I am running server at the time of application start up. I don't like my application crashing at start up that's why I need unused port for my server. I don't how to get the list of ports which is unused.

Thanks in advance
ganesh_IT

Posted 24-Jan-11 1:22am

ganesh_IT

Updated 24-Jan-11 1:38am

Slacker007

v2

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CPallini 24-Jan-11 8:10am

Anyway your application shouldn't crash just because the port is busy.

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Dylan Morley · Answer 1 · 2011-01-24T01:42:00

Solution 1

Can't you just bind to port 0 which should give you an available port?

http://msdn.microsoft.com/en-us/library/xz019029%28v=vs.80%29.aspx[^]

nSocketPort
A well-known port to be used with the socket, or 0 if you want Windows Sockets to select a port.

Posted 24-Jan-11 1:42am

Dylan Morley

Kozlov_Sergey · Answer 2 · 2011-01-24T02:07:00

Solution 2

You can use program tcpview to look at programs runing on port and using sockets.

Posted 24-Jan-11 2:07am

Kozlov_Sergey