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

Blank record injected into database
I always found several blank records inside my database, although $SESSION is required to insert the

issues verifying if user is logged in
I am having issues when a user logs in via asp Login control, the IsAuthenticated still seems to com

Functions Not Loading Into Div
I had some help doing some of this but what I'm trying to do is get my functions to retrieve its val

Help with PHP Email Script
Hi guys,

I'm a newbie to php and need help with the script below:

At the moment when I

rand() function
just a general question guys a girls, is the rand() function 100% random or is it based on time?

default SAP userid
hi,, I just like to know if it is ok to use the default SAP user id (SAP*)?

Populate drop down list from table??
Lets say for arguments sake that i have a table which contains the numbers 1 to 10.
How can i get

DBCA Templates
Hi all,

I'm working on creating a template for DBCA, but can't find any documentation on the

Trouble with a select list
Hello All!
I was wondering if any of you guys could help me with a small problem I'm having!

BB_Code error
I'm having a problem with a custom built function and keep getting this error:


Warning: M