Re: Session oddness/bug?

Another side note with this bug, is that SOME times, I get php errors being dumped to the php errors log such as. This happens when I put apache under a heavy load of a lot of clients(threads) makeing many back to back requests. > [28-Mar-2000 20:58:19] PHP Warning: Failed to write session data. Please > check that the current setting of session.save_path is correct (/tmp) in > Unknown on line 0 > [28-Mar-2000 20:58:19] PHP Warning: Failed to write session data. Please > check that the current setting of session.save_path is correct (/tmp) in > Unknown on line 0 > [28-Mar-2000 20:58:19] PHP Warning: Failed to write session data. Please > check that the current setting of session.save_path is correct (/tmp) in > Unknown on line 0 > [28-Mar-2000 20:58:19] PHP Warning: Failed to write session data. Please > check that the current setting of session.save_path is correct (/tmp) in > Unknown on line 0 Walt > Howdy folks, > I'm working on writing a C test application to test the robustness of > sessions. > I basically need to validate to myself that I can use this on a very > high traffic site. > So I wrote a simple multithreaded app that just makes simple http > GET requests > for a small php page that I wrote. The only thing that this app does is > spawn off > n number of threads to make x number of back to back requests of the > same url. > It parses out the PHPSESSID cookie from the response header the first > time it > sees it, to use in subsiquent GET requests to maintain the session. > Below is my simple php page which gets called over and over for each > thread. > <? > session_start(); > ?> > <html> > <? > if (!isset($count)) > { > session_register("count"); > $count = 1; > echo "\nNEW SESSION\n"; > } > else > $count++; > ?> > COUNT=<? echo $count; ?>; times.<br> > </html> > > My problem I'm having is that I'm seeing a session not really working > properly. > Below is the output of my app. I have the output of all of the threads > going to individual > files, so I can make sense of the output. > > As you see from the output (below), the app makes 2 requests for the > same file on the server. > The first request gets a response to set the PHPSESSID cookie and the > output of the > php script shows that the session is new and the count variable's value > is 1. > The app then makes the second request for the same file on the server > with the > PHPSESSID cookie set with the appropriate value. The problem is the > second > response. According to the second response, the session variable $count > wasn't > set, and so it re-registers the variable again and the assigns it to 1 > again. This seems > like a bug to me. > > The really odd thing is, this only happens when I run the test app on a > different machine > then the web server. If I run the test app on the same machine as the > test server sessions > seem to start and work appropriately. > > Does anyone have any ideas of what I might look at? Is this a bug? > Could the server > GET requests be malformed? > > Thanks > Walt > > thread 1 started > GET /rc/php/test/test_session.php HTTP/1.0 > User-Agent: Mozilla/4.61 [en] (X11; U; Linux 2.2.12-20 i686) > Host: 10.1.0.69 > Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png > Accept-Encoding: gzip > Accept-Language: en > Accept-Charset: iso-8859-1,*,utf-8 > > REQUEST(0) GET /rc/php/test/test_session.php HTTP/1.0 > User-Agent: Mozilla/4.61 [en] (X11; U; Linux 2.2.12-20 i686) > Host: 10.1.0.69 > Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png > Accept-Encoding: gzip > Accept-Language: en > Accept-Charset: iso-8859-1,*,utf-8 > > RESPONSE(0) > HTTP/1.1 200 OK^M > Date: Wed, 29 Mar 2000 04:28:24 GMT^M > Server: Apache/1.3.12 Ben-SSL/1.39 (Unix) PHP/4.0RC1^M > Set-Cookie: Apache=10.1.0.79.2060954304104670; path=/^M > X-Powered-By: PHP/4.0RC1^M > Set-Cookie: PHPSESSID=793e2564f9581b193f6f732a9c075aba; path=/; > domain=.rocketcash.com^M > Expires: Thu, 19 Nov 1981 08:52:00 GMT^M > Cache-Control: no-cache, post-check=0, pre-check=0^M > Pragma: no-cache^M > Connection: close^M > Content-Type: text/html; charset=iso-8859-1^M > ^M > <html> > > NEW SESSION > COUNT=1; times.<br> > </html> > > New COOKIE: PHPSESSID=793e2564f9581b193f6f732a9c075aba > REQUEST(1) GET /rc/php/test/test_session.php HTTP/1.0 > User-Agent: Mozilla/4.61 [en] (X11; U; Linux 2.2.12-20 i686) > Host: 10.1.0.69 > Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, image/png > Accept-Encoding: gzip > Accept-Language: en > Accept-Charset: iso-8859-1,*,utf-8 > Cookie: PHPSESSID=793e2564f9581b193f6f732a9c075aba > > RESPONSE(1) > HTTP/1.1 200 OK^M > Date: Wed, 29 Mar 2000 04:28:24 GMT^M > Server: Apache/1.3.12 Ben-SSL/1.39 (Unix) PHP/4.0RC1^M > Set-Cookie: Apache=10.1.0.79.2063954304104677; path=/^M > X-Powered-By: PHP/4.0RC1^M > Expires: Thu, 19 Nov 1981 08:52:00 GMT^M > Cache-Control: no-cache, post-check=0, pre-check=0^M > Pragma: no-cache^M > Connection: close^M > Content-Type: text/html; charset=iso-8859-1^M > ^M > <html> > > NEW SESSION > COUNT=1; times.<br> > </html>