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POSimple Java TCP Server and PHP Client Problems
 

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  1. POSimple Java TCP Server and PHP Client Problems
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    <p>I am trying to set up a simple TCP connection on a single port between a Java application that will act as the TCP server and a PHP scrip that will act as the Client.</p> <p>I will post the code for each below, but the problem is: I can connect and send data to the Java server just fine. I can get that data and print it out. My problem arises in trying to send a response back to the php server.</p> <p>When I comment out that last line of php "echo socket_read($socket, 14, PHP_NORMAL_READ);" The data gets to the Java server just fine. When I add that line back in, the data does not even get to the Java server.</p> <p>Because of this, I am assuming my problem has something to do with how I am either sending the data from Java, or trying to get the data in PHP from the server.</p> <p>This has me really stumped, any help would be greatly appreciated!</p> <p>Java Server:</p> <pre><code>protected ServerSocket socket; protected final int port = 9005; protected Socket connection; protected String command = new String(); protected String responseString = new String(); socket = new ServerSocket(port); while(true) { // open socket connection = socket.accept(); // get input reader InputStreamReader inputStream = new InputStreamReader(connection.getInputStream()); BufferedReader input = new BufferedReader(inputStream); // get output handler DataOutputStream response = new DataOutputStream(connection.getOutputStream()); // get input command = input.readLine(); // process input Logger.log("Command: " + command); responseString = command + " MC2 It Works!"; // send response response.writeBytes(responseString); response.flush(); response.close(); } </code></pre> <p>PHP Client:</p> <pre><code>$address = 'example.com'; // obviously not the address I am using $port = 9005; $message = "Test"; $socket = socket_create(AF_INET, SOCK_STREAM, getprotobyname('tcp')); socket_connect($socket, $address, $port) if(socket_send($socket, $message, strlen($message), MSG_EOF) != FALSE) { echo socket_read($socket, 14, PHP_NORMAL_READ); } </code></pre>
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    1. COresponseString = command + " MC2 It Works!"+"\r\n";
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    2. COI think you must add the EOF of the line that the socket know you finish sending your data
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    3. COYes that was definitely part of the problem. I figured it all out about 20 minutes after submitting the question. So is life.
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