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From: Corinna Vinschen <cygwin AT cygwin DOT com>
Date: Sat, 9 Dec 2000 21:46:01 +0100
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Subject: Re: getsockname() doesn't fill out data after non-blocking connect()
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On Saturday 09 December 2000 20:17, Dave Johnson wrote:
> While porting an application to cygwin I've discovered the following:
>
> After a non-blocking connect() is called for a TCP connection I am
> calling getsockname() to determine the IP on the local size of the
> connection attempt.
>
> After calling getsockname() and getting the IP address from
> ..sin_addr.s_addr of the sockaddr_in structure the IP was filled out
> with 0's instead of the IP address of the interface in which the
> connection attempt is going out on.
>
> Doing another getsockname() after the socket becomes writable and the
> connection is completed returns valid data.
>
> Other UNIX OS's will return valid socket information after a
> non-blocking connect().  Is this a limitation of cygwin or a bug?

It's a limitation of Winsock. It could perhaps been worked around
in Cygwin. Patches are welcome.

Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.
mailto:vinschen AT redhat DOT com

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