async connect problem

anon:*:anon d4rkstorm at gmail.com
Thu May 5 21:34:17 PDT 2005


Subsequent code to check the socket's status, something like:

       int n;
       socklen_t intsize = sizeof(int);

       getsockopt(f, SOL_SOCKET, SO_ERROR, (void*)&n, &intsize);
       if (n) ...

which works (with suitable cast adjustments) on Solaris, Linux,
Darwin, and yes, even on Windows, doesn't work here.

inline bool sockreq() { return bSocketsRunning; }

it could be a simple script, or it could become a socket array of
nightmares.. but it is no oubt a god idea to always check the sockets.




On 5/6/05, J.R. Oldroyd <fbsd at opal.com> wrote:
> On May 05, 19:39, Brian Buchanan wrote:
> > On Thu, 5 May 2005, J.R. Oldroyd wrote:
> >
> > >Isn't our behaviour wrong...
> > >
> > >On 6-current, the program below prints:
> > >     connect: Connection refused
> > >
> > >Shouldn't it print:
> > >     connect: Operation now in progress
> >
> > No, that's the correct behavior.  The system was able to satisfy your
> > request without blocking because you were attempting a connection to the
> > loopback, so connect() returned immediately with errno == ECONNREFUSED.
> >
> > - Brian
> 
> You are correct, it does return EINPROGRESS when using a non-loopback
> address.
> 
> Perhaps I should ask a different question.
> 
> Subsequent code to check the socket's status, something like:
> 
>         int n;
>         socklen_t intsize = sizeof(int);
> 
>         getsockopt(f, SOL_SOCKET, SO_ERROR, (void*)&n, &intsize);
>         if (n) ...
> 
> which works (with suitable cast adjustments) on Solaris, Linux,
> Darwin, and yes, even on Windows, doesn't work here.
> 
> I have an alternative test that uses getpeername(), but I'm surprised
> at the difference in behavior.
> 
>         -jr
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