Bug #52571 [Csd->Bgs]: socket_read function returns max 1305 bytes remote, OK local

Edit report at http://bugs.php.net/bug.php?id=52571&edit=1 ID: 52571 Updated by: mike@php.net Reported by: jim_ivers at americantours dot com Summary: socket_read function returns max 1305 bytes remote, OK local -Status: Closed +Status: Bogus Type: Bug Package: Streams related Operating System: Centos 5 (redhat clone) PHP Version: 5.3.3 Block user comment: N Previous Comments: ------------------------------------------------------------------------ [2010-08-11 20:29:25] jim_ivers at americantours dot com To clarify, the socket server is remote or local, the php code is always local. Turns out one of the libraries on the remote server is using unicode, 4 bytes to the character. Thus the string it is trying to return is 4 times as long as the string length. ------------------------------------------------------------------------ [2010-08-09 22:45:00] jim_ivers at americantours dot com 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....." ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=52571&edit=1