[Twisted-Python] Socket bind and re-bind problems

James Y Knight foom at fuhm.net
Tue Aug 9 14:21:57 EDT 2005

On Aug 9, 2005, at 12:44 PM, Gaballo Luca wrote:

> hi,
> i'm working with socket and i need to make two consecutive  
> connection binding the client on the same address. When i try to  
> execute the code i have an error like this:
>     socket.error: (98, 'Address already in use')
> even if i have correctly closed the socket !?!

The kernel prevents you from reusing a local port for a few seconds  
in order to properly implement some timeout in the TCP spec. You  
don't really want to bypass this. There is pretty much no reason to  
ever bind a client tcp socket to a specific port. So, your problem is  
solved simply by removing the 'bind' call. Or, if you do want to bind  
to a local IP addr, simply set the local port to 0 so the kernel will  


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