Async WSAConnect failed on XP with error code = 2 ("File not found")

Posted on 16th Feb 2014 07:03 pm by admin

Hi all,

I have very strange bug, please help me if you can.

It is reproduced only on these conditions : WinXP, VS2005, VS2008, build in debug, execute without debugging.

On any other configuration or OS this code works fine.
Also works ok with old VC6.0.
I Tested it also on another XP just in case, same behavior.

I've isolated problematic code in a simple console application (no threads etc).
Just putting :
WSAEventSelect(...., FD_CONNECT | FD_READ | FD_CLOSE)
before WSAConnect, and WSAConnect will fail with error code 2 (means : File not found).
Which is not described in MSDN...also this is fail code when it really cannot connect (server is down or invalid).

If I remove WSAEventSelect (i.e. sync connect) all works.
If I debug code, all works.
If I put break point on WSAConnect line and run this app outside studio, then reach this breakpoint (start debugging) and step through WSAConnect WITH debugger it works....

I'm unable to find anything in the net about this strange behavior.
Also I'm trying to connect to FTP server, which works fine.
I'm attaching full code. It only test WSAConnect in async mode, nothing more.

10x,
Filip

Your Answer:

Login to answer

Other forums

Using Curl_multi for processing multiple URLs
Hi,

I am at a loss as to how to implement this. I would like to be able to automatically assi

classic dynpro : hide area and auto adjust hights
Hi,

I want to develop a similar user interface as is used in standard transaction MIGO.

Grabbing Values From an Array for Posting
I have a grid array that I am using with a form that when it hits the currently named test.php it lo

Include ("Absolute Path") of a file?
I'm not sure what I'm doing wrong. I am writing my php code in the same directory of the file that

Parse error: parse error in C:wampwwwlogspagesmembers.php on line 16
I dont see the problem with this, I always get Parse error: parse error in C:wampwwwlogspagesme

HELP with mysql_real_escape_string
I'm looking to remove apostrophes completely when someone enters lyrics but don't have a clue how to

How to extract/download content from HTTPS page?
Hello to all the Members of this forum, Im Shoiab, A novice programmer in php.. for my first job I h

help understanding hidden input w/ php
hello i'm doing a tutorial where there are multiple forms for an edit page for a user to update thei

How do I use ValidatorCallout extender in Login control?
Hi,I'd like to customize the look and feel of the login control a little bit. One thing I'd love to

Parse Error Help
Hello, I got the parse error "Parse error: syntax error, unexpected ',' in register.php on line