Description:
------------
I have a php script running on apache that reads a string from a TCP socket on a server. Using the below script on a local server works. I cannot get it to return more than 1305 bytes remotely. The remote server reports sending the whole string (about 4K bytes) back. 

The following is a short version of the code below:
   while(($sting = socket_read($socket,  $slen, PHP_BINARY_READ)) !== false) {
        $out = $out.$sting;
        if(strlen($out) >= $slen) break;
   }

I get a warning that the socket closed, then the string:
<b>Warning</b>:  socket_read() [<a href='function.socket-read'>function.socket-read</a>]: unable to read from socket [104]: Connection reset by peer in <b>/usr/local/apache2/htdocs/mikidel.php</b> on line <b>473</b><br />
"returnstringabcdefg....."

using php 5.3.3 w Apache/2.2.14 (Unix) PHP/5.3.3 on Centos 5 ( redhat clone)

./configure --enable-xml --enable-dom --with-openssl --enable-sockets --enable-debug --with-config-file-path=/etc  --with-curl --with-zlib --enable-ftp  --enable-soap --with-sybase-ct=/sybase --with-libxml-dir=/usr  --prefix=/usr/local/apache2/php --with-config-file-path=/usr/local/apache/php --with-gettext --with-apxs2=/usr/local/apache2/bin/apxs

php.ini standard vanilla

note that the remote socket is C code, and I have tried using write(socket...) and send(socket...). Both work locally since there are no \n or \r. Neither work remotely.



Test script:
---------------
   // Create a TCP/IP Socket
   $socket = socket_create (AF_INET, SOCK_STREAM, 0);
   if ($socket < 0) { echo "socket() failed: reason: " . strerror ($socket) . "\n"; }

   // Connect to Target
   $result = socket_connect ($socket, $address, $service_port);
   if ($result < 0) { echo "connect() failed.\nReason: ($result) " . strerror($result) . "\n"; }

   $tmp = socket_read ($socket, 6, PHP_BINARY_READ);
   $slen = (int)($tmp-6);
   $out = (string)$tmp;

$sting = socket_read($socket, $slen, PHP_BINARY_READ);
$out = $out.$sting;

   while(($sting = socket_read($socket,  $slen, PHP_BINARY_READ)) !== false) {
        $out = $out.$sting;
        if(strlen($out) >= $slen) break;
   }

   // Close Socket
   socket_close ($socket);

   return $out."\n";

Expected result:
----------------
The script should work remotely since it works locally.

Obviously if I ask for 4k bytes from a remote socket, it should return 4k bytes, since it does so from a local socket.

Actual result:
--------------
<b>Warning</b>:  socket_read() [<a href='function.socket-read'>function.socket-read</a>]: unable to read from socket [104]: Connection reset by peer in <b>/usr/local/apache2/htdocs/mikidel.php</b> on line <b>473</b><br />
"returnstringabcdefg....."