[Php-java-bridge-users] mysterious error(s)

Hello,
I get this error message in the Apache error log, and I cannot understand what's causing it.

Could somebody help please? Or at least point me to the right direction :)


[Thu Sep 06 16:45:13 2012] [error] [client 131.152.227.94] PHP Notice:  fwrite() [<a href='function.fwrite'>function.fwrite</a>]: send of 193 bytes failed with errno=32 Broken pipe in /import/wnz/home/mirz/libraries/php/Java.inc on line 652, referer: http://www.clipz.unibas.ch/index.php?r=tools%2Falignment%2FregionalAlignment&strand=%2B&orgId=7&yt0=Show+genome+browser

Java.inc looks like this:

648:   $res .= "\r\n";
649:   $res .= "\177";
650:   $res .= $compatibility;
651:   $res .= $data;
652:   $count = fwrite($socket, $res) or $this->shutdownBrokenConnection("Broken connection handle");
653:   fflush($socket) or $this->shutdownBrokenConnection("Broken connection handle");
654:   return $count;}
655:   function read($size) {if(is_null($this->headers)) $this->parseHeaders();
656:   $data = fread($this->socket, $this->headers['content_length']);


Another problem I get is that in a certain page I have this error:
Error 500
Undefined index: content_length
Which I strongly suspect that it's the same "content_length" of line 656..