What is SocketOptionName.ReuseAddress used for?

Posted by Hemant on Stack Overflow See other posts from Stack Overflow or by Hemant
Published on 2010-05-04T08:51:34Z Indexed on 2010/05/04 9:08 UTC
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.NET

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tcp

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tcpip

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sockets

I used to think that using SocketOptionName.ReuseAddress, I can reuse a port that is in TIME_WAIT state. But I tried to experiment with it and it seems it has no effect.

If I check sockets using netstat, and it shows the socket is in TIME_WAIT state and I immediately run the client again, I get the exception:

Only one usage of each socket address (protocol/network address/port) is normally permitted 172.16.16.16:12345

I cannot make anything out of it. Please can you elaborate what SocketOptionName.ReuseAddress is good for?

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