estoque Posted March 14, 2013 Share Posted March 14, 2013 (edited) Need help on this guys. I'm working on a new project and I'm fairly new on socket connections. Background: I'm creating a PHP script that can receive and store new SMS messages from GSM modem via its API(TCP, request/response way). So far, the manufacturer told me that I should follow this flow on using the device's API: 1. GSM modem sends User Authentication message to Socket Server once a connection is made. 2. Socket Server sends a response. 3. Socket Server waits for incoming connections from GSM. This is my code as of the moment: <?php set_time_limit (0); // Set the ip and port we will listen on $address = '127.0.0.1'; $port = 8855; $sock = socket_create(AF_INET, SOCK_STREAM, 0); socket_bind($sock, $address, $port) or die('Could not bind to address'); socket_listen($sock); $client = socket_accept($sock); //Breakdown of received message from GSM modem, I needed the $ID as identifier on my response $length = bin2hex(socket_read($client, 4)); $ID = bin2hex(socket_read($client, 16)); $type = bin2hex(socket_read($client, 4)); $username = bin2hex(socket_read($client, 16)); $password = bin2hex(socket_read($client, 16)); //This is what I should send on the socket as a response $rlength=pack("H*", "00000001"); $rID=pack("H*", $ID); $rtype=pack("H*","00100000"); $rresult=pack("H*", "00"); $response=$rlength.$rID.$rtype.$rresult; //Write the response on the socket socket_write($client, $response, $strlen($response)); //After sending the data, I should wait for the GSM modem's incoming connection when a new SMS message is received. //Any insights what should I code below? socket_close($client); socket_close($sock); ?> Edited March 14, 2013 by ignace Added code tags Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.