Re: IIS not responding to some requests Error: 12029

From: Ken Schaefer (kenREMOVE_at_THISadOpenStatic.com)
Date: 06/13/04 

Date: Sun, 13 Jun 2004 20:30:43 +1000

Hi,

Error 12029 is *not* a HTTP status code. HTTP status codes are only digits,
eg 200 (OK), or 404 (File Not Found) or 500 (Internal Server Error). 12029
is a different error. I have had a quick look, and these are the matches I
can see for 12029:

ERROR_INTERNET_CANNOT_CONNECT inetmsg.h
ERROR_INTERNET_CANNOT_CONNECT wininet.h

I assume that XMLHttp is using the WinInet APIs, and for some reason can not
connect to the internet (I assume that you do *not* see anything in the IIS
logfiles when these requests are failing - that would indicate that the
request never makes it to IIS).

I don't think this is an IIS issue. I think your machine may have wider
issues with network connectivity or the network stack. It could be a
hardware issue, or it could be some other issue.

Is there anything in the Windows Event Logs? Is there anything in the IIS
logs that matches these requests from XMLHTTP?

Cheers
Ken

"Baris Seker" <bseker@hotmail.com> wrote in message
news:BF5C451D-2D83-4138-8C99-2826A25F0E44@microsoft.com...
: I have a server running IIS 5.0 with 2 processors and 2.5 GB RAM.
:
: A week ago (nothing changed before that as far as I know) IIS started to
fail on some requests.
:
: The CPU is very low however some of the requested pages from the server is
returning with and error. XMLHttp is giving a HTTP status: 12029.
:
: I maxed out MaxEndPointConnections and ServerListenBacklog with setting
them to 0.
:
: The error frequency is not correlated to server activity. I get the error
even when there is not much going on on the server.
:
: The failing requests are occuring on every site on the server.
:
: I don't believe this is a hardware problem because the responses are
failing even for a website at address 127.0.0.1.
:
: Do I need to reinstall windows (as usual)?
:
: I can give you other stats if you are interested.
:
: The script below should give you a 12029, if not try a few times.
:
: var xmlHttpReq = new ActiveXObject("MSXML2.XMLHTTP.4.0");
: for(var i = 0; i < 10; i++)
: {
: xmlHttpReq.open("GET", "http://www.netproje.com/", false);
: try
: {
: xmlHttpReq.send();
: }
: catch(e)
: {
: WScript.Echo(e.description);
: }
: WScript.Echo(xmlHttpReq.status);
: }
:
:

Relevant Pages

  • Re: Security of IIS - Secure Intranet web site on SBS2003 box
    ... > take two days to rebuild their server and return everything to normal. ... > Before 'Code Red' IIS was considered reasonably secure. ... >> over HTTP via SSL for OUTLOOK-EXCHANGE links to users operating in the ...
    (microsoft.public.windows.server.sbs)
  • Re: Info about tuning the IIS and SPS thread settings
    ... I want to dig the role of IIS so that get clear picture so what can be done ... The amount of physical memory, in MBs, immediately available for allocation to a process or for system use on the server. ... trends begin to emerge that equate requests per second with CPU consumption ... SPS requests get routed through the IIS 6.0 as SPS also has its own thread ...
    (microsoft.public.sharepoint.portalserver)
  • Re: External access to HTTP
    ... Well, if IIS is receiving the requests for "outside", then you should see ... something in the IIS HTTP logs. ... then it means that no HTTP server could be ...
    (microsoft.public.inetserver.iis.security)
  • Code feedback
    ... all I would like some feedback on a multithreaded HTTP server I've ... The server serves python-scripts by dynamically loading scripts ... # Basic, threaded HTTP server, serving requests via python scripts ...
    (comp.lang.python)
  • Re: IIS Warm Up Period
    ... How can you prevent IIS6 server from being "dropped into the live rotation"? ... There is no built-in IIS feature for warming up. ... immediately attempts to process the requests which queue up and cause ...
    (microsoft.public.inetserver.iis)
Loading