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

Checking BOM Authorization Group
Hai Friends,

I have developed a mulitilevel BOM display report. End users have been assig

Session login issue
I'm wondering how to fix a problem I'm having with a session-based login system

Say I go to h

Nested (echoed) php running wrong script
Got a problem with a php website I'm creating.

In a nutshell, the first page is entirely html

mySQL and PHP search
Hello,
I am trying to code a project and ran into a brick wall with one of my pages. I am pretty

MySQL-PHP Query Results Help
Hello all. I'm hoping to be able to get some help in solving a problem with query/rowcount output. I

Problems with strings containing
Hey all,

I have encountered something strange in a script. I am trying to write an XML heade

Spliting paragraph into sentences and attach in
Here is what I am trying to do

example: Para1[123.456.789!] 3 sentences
Para2

CHECH A STRING FOR ' " ' (DOUBLE QUOTES)
I am checking for delimiter (.!?) and if there is a " after a sentence then it should neglect a

Images in email problem
I found this script for sending emails, it works but if the email has <img src="image.jp

Typedef struct vs just struct
Anyone know the rationale for using typedef for structs when a struct is itself a typedef? I have s