[Php-java-bridge-users] Reading fsockopen stream causes Severe error in PhpCGIServlet

[<php...@li...>]

Hi,

I'm doing a fairly simple streaming download, looping for a number of 
different files, and I'm getting sporadic, unrepeatable severe errors in 
PhpCGIServlet.

The code will successfully download some files, or parts of some files, 
but will sometimes cause a crash. It might download 850MB without a 
hiccup, or fail partway through a file at 20MB. If I rerun the code, it 
might download the file it previously failed on, or I might need to run 
it two or three times to get it to work, then it might download all 
other files with no problems.

The code has been tested using the most up-to-date JavaBridge, 
php-script and php-servlet jar files and the error still occurs. The PHP 
has been tested in Apache webserver and there is no evidence of the 
error there. Tomcat is running on a VMWare instance with PHP-CGI, and 
Apache is running on the host machine with the Apache PHP server module.

Any advice would be welcome.

Using:
PHP 5.2.10
Tomcat 6.0.20
Apache 2.2.10

Cheers,


Mark...

Extract of error log:

INFO: PHP Warning:  unlink(sync.lck) [<a 
href='function.unlink'>function.unlink</a>]: Permission denied in 
C:\player.php on line 15
Feb 5, 2010 12:53:19 PM org.apache.catalina.core.ApplicationContext log
INFO: SessionListener: contextDestroyed()
Feb 5, 2010 12:53:19 PM org.apache.catalina.core.ApplicationContext log
INFO: ContextListener: contextDestroyed()
Feb 5, 2010 12:53:19 PM org.apache.catalina.core.ApplicationContext log
SEVERE: Servlet PhpCGIServlet threw unload() exception
javax.servlet.ServletException: Servlet.destroy() for servlet 
PhpCGIServlet threw exception
	at 
org.apache.catalina.core.StandardWrapper.unload(StandardWrapper.java:1413)
	at org.apache.catalina.core.StandardWrapper.stop(StandardWrapper.java:1739)
	at org.apache.catalina.core.StandardContext.stop(StandardContext.java:4563)
	at 
org.apache.catalina.core.ContainerBase.removeChild(ContainerBase.java:924)
	at 
org.apache.catalina.startup.HostConfig.undeployApps(HostConfig.java:1248)
	at org.apache.catalina.startup.HostConfig.stop(HostConfig.java:1219)
	at 
org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:316)
	at 
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
	at org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:1086)
	at org.apache.catalina.core.ContainerBase.stop(ContainerBase.java:1098)
	at org.apache.catalina.core.StandardEngine.stop(StandardEngine.java:448)
	at org.apache.catalina.core.StandardService.stop(StandardService.java:584)
	at org.apache.catalina.core.StandardServer.stop(StandardServer.java:744)
	at org.apache.catalina.startup.Catalina.stop(Catalina.java:633)
	at org.apache.catalina.startup.Catalina.start(Catalina.java:608)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: java.lang.NullPointerException
	at php.java.bridge.Util$Process.getOutputStream(Util.java:1071)
	at php.java.servlet.fastcgi.ChannelFactory.destroy(ChannelFactory.java:149)
	at php.java.servlet.fastcgi.FastCGIServlet.destroy(FastCGIServlet.java:296)
	at php.java.servlet.PhpCGIServlet.destroy(PhpCGIServlet.java:195)
	at 
org.apache.catalina.core.StandardWrapper.unload(StandardWrapper.java:1394)
	... 20 more

The code extract is here. The error is occuring in the '// Chunk 
download' loop:

           $fs = fsockopen($host, 80, $errno, $errstr, 30);
           if (!$fs) {
             $this->writeDebugInfo("FAILED: ", $errstr . '(' . $errno . 
')');
           } else {
             $out = "GET $file HTTP/1.0\r\n";
             $out .= "Host: $host\r\n";
             $out .= "Connection: Close\r\n\r\n";
             fwrite($fs, $out);
             $fm = fopen ($temp_file_name, "w");
             stream_set_timeout($fs, 30);
             while(!feof($fs) && ($debug = fgets($fs)) != "\r\n" ); // 
ignore headers
             while(!feof($fs)) {
               $contents = fgets($fs, 4096); // Chunk download
               fwrite($fm, $contents);
             }
             fclose($fm);

             $info = stream_get_meta_data($fs);
             fclose($fs);
             if ($info['timed_out']) {
               // Delete temp file if fails
               unlink($temp_file_name);
               $this->writeDebugInfo("FAILED: Connection timed out: ", 
$temp_file_name);
               $this->writeDebugInfo("stream info: ", $info);
             } else {
               // Move temp file if succeeds
               $media_file_name = str_replace('temp/', 'media/', 
$temp_file_name);
               rename($temp_file_name, $media_file_name);
               $this->writeDebugInfo("SUCCESS: ", $media_file_name);
               $this->writeDebugInfo("stream info: ", $info);
             }
           }