Well I became aware of the problem when I started refreshing an ssl page very fast from localhost... So I guess the load doesn't have to be -that- high to reproduce the problem. I agree there must be some problem in the threading code. I tried apache 2.0 with mod_ssl but I couldn't get it to work on win32. It would be interesting if the people involved in the porting of Apache on Win32 would take the time to write a sort of "developer howto", (or if it exists already, mail the pointers to it :) explaining like you said how to debug apache modules and the apache code itself ( apache modules on win32 are .so objects while one would expect DLLs for example).
In my case we will probably solve the problem by (temporarely?) switching to IIS, but it would be nice to have an alternative to it, and Apache would be the best alternative to it in my opinion. Thanks, Enrico -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of [EMAIL PROTECTED] Sent: January 17, 2002 2:43 PM To: [EMAIL PROTECTED] Subject: RE: mod-ssl on win32 (mod_ssl bug 569, apache crash) Don't have heavy load yet myself, but afraid I will have same problem on one machine. Here is my thinking from experience with other code: Heavy load and Win32 indicates the problem has to do with concurrency by threading. Reasoning: Easy load doesn't cause much concurrency. And under Linux, as far as I am reading in documentation, most installations run with a separate process for each connection. So what is unique to heavy load under Win32 is concurrency by threading instead of by processes. Hope that reminder saves someone time in figuring this out. Maybe I'll get to it later. Also would be interested in hints about how to debug modules under Win32. - Leo At 09:30 AM 1/17/02 -0600, you wrote: >I could have written your email word for word! I've been trying to >keep Apache/mod_ssl running on WIN32 since early December, and still >haven't figured out what's wrong. Josef's patch seemed to work for him, >but even after applying it, my SSL-enabled Apache only runs a few >minutes under heavy load before crashing. > >As far as getting a debug version built, I've had lots of trouble with >that as well. It seems to build just fine in debug mode in Visual C++, >but when I attempt to debug the EXE after a crash, I get no source code >to trace. > >Is there anyone out there successfully running an SSL-enabled version >of Apache on WIN32? If so, did you have to do anything special? And >either way, does someone have a write-up explaining how to put together >a debug build? > >Thanks. > >Jay > >-----Original Message----- >From: Enrico Demarin [mailto:[EMAIL PROTECTED]] >Sent: Thursday, January 17, 2002 12:19 PM >To: [EMAIL PROTECTED] >Subject: mod-ssl on win32 (mod_ssl bug 569, apache crash) > >I know it's not supported but... seems like something is still not good >in mod_ssl , as reported by Josef Goebel, who posted a patch, there is >something odd in mod_ssl for win32. I applied his patch to ap_ctx.c , >that cures the crash in most of the cases in ap_ctx_get() adds: if >((ctx==NULL) || (key==NULL)) { >ap_log_assert("ap_ctx_get_bug: ctx or key are NULL!", >__FILE__, __LINE__); >return NULL; >} >and i also added the same check in ap_ctx_set. The problem is that sometimes mod_ssl calls such functions with ctx set to null and key set to null, and crashes apache. I have had other crashes which i haven't been able to debug ( how do i properly build a debug version of apache-ssl on win32 ? when the visual c debug window pops up after a crash all i can see is assembly code ). As reported by Josef the "null" calls seem to be generated by ssl_io_suck_read() in ssl_engine_io.c, >but why does it happen ? is there some memory corruption going inside mod_ssl that causes the structures to be set to null ? Apache with aforementioned patch is "almost" stable but... i have the sensation that there is a problem somewhere else. >- Enrico > >______________________________________________________________________ >Apache Interface to OpenSSL (mod_ssl) www.modssl.org >User Support Mailing List [EMAIL PROTECTED] >Automated List Manager [EMAIL PROTECTED] ______________________________________________________________________ Apache Interface to OpenSSL (mod_ssl) www.modssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED] ______________________________________________________________________ Apache Interface to OpenSSL (mod_ssl) www.modssl.org User Support Mailing List [EMAIL PROTECTED] Automated List Manager [EMAIL PROTECTED]
