[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
Re: Problem with starting CPPSERV
Again, you didn't give me exact command lines you used.
sergey@total-knowledge.com wrote:
> Well, when I run LD_LIBRARY_PATH= from cppserv-samples/ directory and try
> to call one of our sample servlets, it behaives exactly the same: the
> browser hangs. So I don't think it's related to my code.
> However when I run it in gdb I get error messages. Here is what I do:
>
> 1. Run 'gdb --args cppserv -c engine.xml -P eng.pid' in my trunk directory.
> 2. Run 'run LD_LIBRARY_PATH=debug/libui
> ../../cppserv/debug/src/container/cppserv -P eng.pid -c engine.xml' in
> gdb.
> 3. Get error message "libuu.so: cannot open shared object file: No such
> file or directory"
> 4. Program exited with code 01.
>
> I do have libuu.so in debug/libui directory.
>
> When I do the same operation in cppserv-samples directory, I get
> "libCommon.so: cannot open shared object file: No such file or directory"
> error message despite of the fact that libCommon.so does exist in
> cppserv-samples/debug/sharedata.
>
> So looks like this problem related to library pathes, maybe something has
> changed b/c of recent cppserv upgrade. I did try to remove "export
> LD_LIBRARY_PATH=/usr/local/lib" line from my ./.bash_profile file, but it
> didn't help either.
>
> Hopefully this info may lead to some clues.
>
>
>
>> Aah. So I was trying to diagnose wrong problem.
>> OK. cppserv is working for you then. Your problem
>> is somewhere in your code - it hangs before returning any
>> data.
>> My recommendation is to run CPPSERV under gdb
>> (gdb --args cppserv -c engine.xml -P eng.pid)
>> And see where it hangs. If you do Ctl+C when under GDB,
>> you should be able to get a stack trace.
>>
>> sergey@total-knowledge.com wrote:
>>
>>> Nope, the browser just hangs when I call servlets.
>>>
>>>
>>>
>>>> Are you still getting error 503?
>>>>
>>>> sergey@total-knowledge.com wrote:
>>>>
>>>>
>>>>>> OK. This is strange, I admit. Try doing netstat -an after starting
>>>>>> cppserv, to see where it really is listening.
>>>>>>
>>>>>>
>>>>>>
>>>>> Here is what I get after starting cppserv:
>>>>> unix 2 [ ACC ] STREAM LISTENING 75497
>>>>> /tmp/cppserv.sock
>>>>>
>>>>> When I start servlet in the browser, it adds:
>>>>> unix 3 [ ] STREAM CONNECTED 75673
>>>>> /tmp/cppserv.sock
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> Another thing - did you update apache mod_cserv? sudo make install
>>>>>> should take care of that.
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>> I did 'sudo make install' in my cppserv/ directory, got
>>>>>
>>>>> Linking mod_cserv
>>>>> Installing debug/./src/mod_cppserv/mod_cserv.so into
>>>>> //usr/lib64/apache/mod_cserv.so
>>>>>
>>>>> message, but it didn't resolve the issue.
>>>>>
>>>>> Another thing, after starting cppserv I get debug "Connecting to DB"
>>>>> message which is used in my uudb class' constructor, if it may lead to
>>>>> any
>>>>> clues.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> sergey@total-knowledge.com wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>> I went farther with debugging this issue and I think that cppserv is
>>>>>>> listening on /tmp/cppserv.sock.
>>>>>>>
>>>>>>> First of all I confirmed that <listener> tag in engine.xml was
>>>>>>> parsed
>>>>>>> correctly. Here is the output:
>>>>>>>
>>>>>>> path = /tmp/cppserv.sock
>>>>>>> protocol = unix
>>>>>>>
>>>>>>> Then in serverconfig.cpp I put debug message in
>>>>>>> ServerConfig::GlobalContext::setListener()
>>>>>>> and found out that RequestListener::UnixAcceptor(path) called with
>>>>>>> correct
>>>>>>> path = /tmp/cppserv.sock
>>>>>>>
>>>>>>> Then I checked requestlistener.cpp' RequestListener::UnixAcceptor()
>>>>>>> and
>>>>>>> found out that
>>>>>>> int sock=socket(PF_UNIX,SOCK_STREAM,0); sock=4
>>>>>>> ret=listen(sock,MAX_BACKLOG); ret=0
>>>>>>>
>>>>>>> No exceptions were thrown, so init() was called and
>>>>>>> unsigned long flags = fcntl(sock,F_GETFL); flags=2
>>>>>>>
>>>>>>> Again, no exceptions were thrown.
>>>>>>>
>>>>>>> Any ideas?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> Mmm.. So, I guess it didn't quite work with parsing.
>>>>>>>> Apparently cppserv is _not_ listening on /tmp/cppserv.sock,
>>>>>>>> since you get connection refused.
>>>>>>>>
>>>>>>>> sergey@total-knowledge.com wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>> I do use Unix domain sockets:
>>>>>>>>>
>>>>>>>>> <listener protocol="unix" path="/tmp/cppserv.sock"/>
>>>>>>>>>
>>>>>>>>> I tried to create my own socket using perl script but it didn't
>>>>>>>>> help
>>>>>>>>> either.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>> Use unix domain sockets
>>>>>>>>>> -----Original Message-----
>>>>>>>>>> From: sergey@total-knowledge.com
>>>>>>>>>> Date: Sun, 11 Mar 2007 17:39:09
>>>>>>>>>> To:"C++ Servlet Engine Discussion" <cppserv@total-knowledge.com>
>>>>>>>>>> Subject: Re: Problem with starting CPPSERV
>>>>>>>>>>
>>>>>>>>>> I checked both Apache logs(/var/log/syslog and
>>>>>>>>>> /var/log/httpd/error_log)
>>>>>>>>>> In /var/log/httpd/error_log I got
>>>>>>>>>>
>>>>>>>>>> [error] [client 127.0.0.1] Cannot connect to CPPSERV
>>>>>>>>>> (/tmp/cppserv.sock):
>>>>>>>>>> Connection refused
>>>>>>>>>>
>>>>>>>>>> Also I tried to specify host="localhost" in <listener> with no
>>>>>>>>>> luck.
>>>>>>>>>> I'm trying to find out if the parsed data actually loaded to
>>>>>>>>>> constructors,
>>>>>>>>>> but have trouble finding where this proccess takes place.
>>>>>>>>>> Can you give me some hints which classes I should check in order
>>>>>>>>>> to
>>>>>>>>>> do
>>>>>>>>>> it?
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>> Connection properties are described in engine.xml
>>>>>>>>>>> If it isn't set up right, it won't be connecting. Look at
>>>>>>>>>>> apache logs.
>>>>>>>>>>>
>>>>>>>>>>> sergey@total-knowledge.com wrote:
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>>> Which means you don't have apache connecting to your cppserv
>>>>>>>>>>>>> instance.
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>> Hmm.. why did it happen after recent changes to
>>>>>>>>>>>> xmlserverconfig.cpp
>>>>>>>>>>>> then?
>>>>>>>>>>>> I don't think these things can be related, it worked well
>>>>>>>>>>>> before.
>>>>>>>>>>>> How can I connect apache to my cppserv instance?
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>> --
>>>>>>>>>>> Ilya A. Volynets-Evenbakh
>>>>>>>>>>> Total Knowledge. CTO
>>>>>>>>>>> http://www.total-knowledge.com
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>> --
>>>>>>>> Ilya A. Volynets-Evenbakh
>>>>>>>> Total Knowledge. CTO
>>>>>>>> http://www.total-knowledge.com
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>> --
>>>>>> Ilya A. Volynets-Evenbakh
>>>>>> Total Knowledge. CTO
>>>>>> http://www.total-knowledge.com
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>> --
>>>> Ilya A. Volynets-Evenbakh
>>>> Total Knowledge. CTO
>>>> http://www.total-knowledge.com
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>> --
>> Ilya A. Volynets-Evenbakh
>> Total Knowledge. CTO
>> http://www.total-knowledge.com
>>
>>
>>
>
>
>
--
Ilya A. Volynets-Evenbakh
Total Knowledge. CTO
http://www.total-knowledge.com