Re: How to detect closed connection

On 07/12/2011 09:40 AM, Dean Banks wrote:
> I have a FCGI application written in C. We have cases where a client
> closes an active connection--i.e. leaves the page during page
> load--which we'd like to detect within the application, if possible.
> We have our web server (nginx) configured to close the FCGI connection
> when the client connection is unexpectedly closed, so my hope is that
> by looking at the FCGI stream state at the end of the transaction, we
> /might/ be able to detect a client-initiated closed connection.
>
> My question is: Is it possible to detect this using FCGX_GetError() on
> the output stream right before calling FCGX_Finish_r() ? If not, how
> might I trap such a condition.
>

We usually detect this when FCGX_PutStr() returns -1.  In this case,
FCGX_GetError() returns the reason as a system errno (on Linux, errno
104 'Connection reset by peer').

I don't know about the reliability of FCGX_GetError() if you did not
detect an error return code from an FCGX_* function.

-- 
Rob