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Wie hört man ein TCP Portierung mit PHP?

Ich habe einen GPS-Tracker, der eine Verbindung herstellt und Daten an einen definierten öffentlichen Server sendet: Port über eine GPRS-Verbindung.

Ich kann den IP-Port des GPS-Geräts definieren

Meine Frage ist, kann ich einfach einen Port auf meinem Server öffnen und die mit PHP empfangenen Daten abhören/speichern?

Vielen Dank.

12
gustyaquino

Bearbeiten/Aktualisieren 16. August 2017: Benutzer und Bibliotheksautor <@Navarr> hat kommentiert, dass er eine neue, aktualisierte Version der Bibliothek veröffentlicht hat, auf der der Code in meiner ursprünglichen Antwort basiert von. Einen Link zum neuen Code auf seinem Github hier . Fühlen Sie sich frei, den neuen Code zu erkunden und beziehen Sie sich hier auf das ursprüngliche Beispiel (ich habe den neuen Code nicht persönlich erforscht/verwendet).


Im folgenden Code wird die hier gefundene Datei SocketServer.class.php verwendet. Es soll als eigenständiger Prozess ausgeführt werden, dh unter Linux musste ich die Datei ausführbar machen und dann über die Befehlszeile mit "php my_server.php" ausführen. Weitere Informationen zum Ausführen von PHP-Skripts von der Befehlszeile aus: http://www.funphp.com/?p=33

Laden Sie zunächst die Datei SocketServer.class.php hier herunter: http://www.phpclasses.org/browse/file/31975.html

Versuchen Sie dies, um es zu nutzen, und passen Sie es an, um die eingehenden eigenen Daten nach Bedarf zu empfangen. Ich hoffe es hilft.

<?php

require_once("SocketServer.class.php"); // Include the File
$server = new SocketServer("192.168.1.6",31337); // Create a Server binding to the given ip address and listen to port 31337 for connections
$server->max_clients = 10; // Allow no more than 10 people to connect at a time
$server->hook("CONNECT","handle_connect"); // Run handle_connect every time someone connects
$server->hook("INPUT","handle_input"); // Run handle_input whenever text is sent to the server
$server->infinite_loop(); // Run Server Code Until Process is terminated.


function handle_connect(&$server,&$client,$input)
{
    SocketServer::socket_write_smart($client->socket,"String? ","");
}
function handle_input(&$server,&$client,$input)
{
    // You probably want to sanitize your inputs here
    $trim = trim($input); // Trim the input, Remove Line Endings and Extra Whitespace.

    if(strtolower($trim) == "quit") // User Wants to quit the server
    {
        SocketServer::socket_write_smart($client->socket,"Oh... Goodbye..."); // Give the user a sad goodbye message, meany!
        $server->disconnect($client->server_clients_index); // Disconnect this client.
        return; // Ends the function
    }

    $output = strrev($trim); // Reverse the String

    SocketServer::socket_write_smart($client->socket,$output); // Send the Client back the String
    SocketServer::socket_write_smart($client->socket,"String? ",""); // Request Another String
}

Edit: Um die Dinge für diese Antwort relevant und funktional zu halten, fand ich es am besten, nicht weiter auf Code aus einer externen Quelle zu setzen, der möglicherweise nicht immer verfügbar ist (oder unter der angegebenen URL in meinem Link). Der Einfachheit halber füge ich unten den Code hinzu, der der SocketServer.class.php-Datei entspricht, mit der ich oben in diesem Beitrag verlinkt habe. (Entschuldigung für die Länge und möglicherweise fehlende Einrückung/Formatierung beim Kopieren/Einfügen, ich bin nicht der Autor des Codes unten).

  <?php
  /*! @class SocketServer
   @author Navarr Barnier
   @abstract A Framework for creating a multi-client server using the PHP language.
   */
  class SocketServer
  {
    /*! @var config
     @abstract Array - an array of configuration information used by the server.
     */
    protected $config;

    /*! @var hooks
     @abstract Array - a dictionary of hooks and the callbacks attached to them.
     */
    protected $hooks;

    /*! @var master_socket
     @abstract resource - The master socket used by the server.
     */
    protected $master_socket;

    /*! @var max_clients
     @abstract unsigned int - The maximum number of clients allowed to connect.
     */
    public $max_clients = 10;

    /*! @var max_read
     @abstract unsigned int - The maximum number of bytes to read from a socket at a single time.
     */
    public $max_read = 1024;

    /*! @var clients
     @abstract Array - an array of connected clients.
     */
    public $clients;

    /*! @function __construct
     @abstract Creates the socket and starts listening to it.
     @param string - IP Address to bind to, NULL for default.
     @param int - Port to bind to
     @result void
     */
    public function __construct($bind_ip,$port)
  {
    set_time_limit(0);
    $this->hooks = array();

    $this->config["ip"] = $bind_ip;
    $this->config["port"] = $port;

    $this->master_socket = socket_create(AF_INET, SOCK_STREAM, 0);
    socket_bind($this->master_socket,$this->config["ip"],$this->config["port"]) or die("Issue Binding");
    socket_getsockname($this->master_socket,$bind_ip,$port);
    socket_listen($this->master_socket);
    SocketServer::debug("Listenting for connections on {$bind_ip}:{$port}");
  }

    /*! @function hook
     @abstract Adds a function to be called whenever a certain action happens. Can be extended in your implementation.
     @param string - Command
     @param callback- Function to Call.
     @see unhook
     @see trigger_hooks
     @result void
     */
    public function hook($command,$function)
  {
    $command = strtoupper($command);
    if(!isset($this->hooks[$command])) { $this->hooks[$command] = array(); }
    $k = array_search($function,$this->hooks[$command]);
    if($k === FALSE)
  {
    $this->hooks[$command][] = $function;
  }
  }

    /*! @function unhook
     @abstract Deletes a function from the call list for a certain action. Can be extended in your implementation.
     @param string - Command
     @param callback- Function to Delete from Call List
     @see hook
     @see trigger_hooks
     @result void
     */
    public function unhook($command = NULL,$function)
  {
    $command = strtoupper($command);
    if($command !== NULL)
  {
    $k = array_search($function,$this->hooks[$command]);
    if($k !== FALSE)
  {
    unset($this->hooks[$command][$k]);
  }
  } else {
    $k = array_search($this->user_funcs,$function);
    if($k !== FALSE)
  {
    unset($this->user_funcs[$k]);
  }
  }
  }

    /*! @function loop_once
     @abstract Runs the class's actions once.
     @discussion Should only be used if you want to run additional checks during server operation. Otherwise, use infinite_loop()
     @param void
     @see infinite_loop
     @result bool - True
     */
    public function loop_once()
  {
    // Setup Clients Listen Socket For Reading
    $read[0] = $this->master_socket;
    for($i = 0; $i < $this->max_clients; $i++)
  {
    if(isset($this->clients[$i]))
  {
    $read[$i + 1] = $this->clients[$i]->socket;
  }
  }

    // Set up a blocking call to socket_select
    if(socket_select($read,$write = NULL, $except = NULL, $tv_sec = 5) < 1)
  {
    // SocketServer::debug("Problem blocking socket_select?");
    return true;
  }

    // Handle new Connections
    if(in_array($this->master_socket, $read))
  {
    for($i = 0; $i < $this->max_clients; $i++)
  {
    if(empty($this->clients[$i]))
  {
    $temp_sock = $this->master_socket;
    $this->clients[$i] = new SocketServerClient($this->master_socket,$i);
    $this->trigger_hooks("CONNECT",$this->clients[$i],"");
    break;
  }
    elseif($i == ($this->max_clients-1))
  {
    SocketServer::debug("Too many clients... :( ");
  }
  }

  }

    // Handle Input
    for($i = 0; $i < $this->max_clients; $i++) // for each client
  {
    if(isset($this->clients[$i]))
  {
    if(in_array($this->clients[$i]->socket, $read))
  {
    $input = socket_read($this->clients[$i]->socket, $this->max_read);
    if($input == null)
  {
    $this->disconnect($i);
  }
    else
  {
    SocketServer::debug("{$i}@{$this->clients[$i]->ip} --> {$input}");
    $this->trigger_hooks("INPUT",$this->clients[$i],$input);
  }
  }
  }
  }
    return true;
  }

    /*! @function disconnect
     @abstract Disconnects a client from the server.
     @param int - Index of the client to disconnect.
     @param string - Message to send to the hooks
     @result void
     */
    public function disconnect($client_index,$message = "")
  {
    $i = $client_index;
    SocketServer::debug("Client {$i} from {$this->clients[$i]->ip} Disconnecting");
    $this->trigger_hooks("DISCONNECT",$this->clients[$i],$message);
    $this->clients[$i]->destroy();
    unset($this->clients[$i]);
  }

    /*! @function trigger_hooks
     @abstract Triggers Hooks for a certain command.
     @param string - Command who's hooks you want to trigger.
     @param object - The client who activated this command.
     @param string - The input from the client, or a message to be sent to the hooks.
     @result void
     */
    public function trigger_hooks($command,&$client,$input)
  {
    if(isset($this->hooks[$command]))
  {
    foreach($this->hooks[$command] as $function)
  {
    SocketServer::debug("Triggering Hook '{$function}' for '{$command}'");
    $continue = call_user_func($function,$this,$client,$input);
    if($continue === FALSE) { break; }
  }
  }
  }

    /*! @function infinite_loop
     @abstract Runs the server code until the server is shut down.
     @see loop_once
     @param void
     @result void
     */
    public function infinite_loop()
  {
    $test = true;
    do
  {
    $test = $this->loop_once();
  }
    while($test);
  }

    /*! @function debug
     @static
     @abstract Outputs Text directly.
     @discussion Yeah, should probably make a way to turn this off.
     @param string - Text to Output
     @result void
     */
    public static function debug($text)
  {
    echo("{$text}\r\n");
  }

    /*! @function socket_write_smart
     @static
     @abstract Writes data to the socket, including the length of the data, and ends it with a CRLF unless specified.
     @discussion It is perfectly valid for socket_write_smart to return zero which means no bytes have been written. Be sure to use the === operator to check for FALSE in case of an error.
     @param resource- Socket Instance
     @param string - Data to write to the socket.
     @param string - Data to end the line with. Specify a "" if you don't want a line end sent.
     @result mixed - Returns the number of bytes successfully written to the socket or FALSE on failure. The error code can be retrieved with socket_last_error(). This code may be passed to socket_strerror() to get a textual explanation of the error.
     */
    public static function socket_write_smart(&$sock,$string,$crlf = "\r\n")
  {
    SocketServer::debug("<-- {$string}");
    if($crlf) { $string = "{$string}{$crlf}"; }
    return socket_write($sock,$string,strlen($string));
  }

    /*! @function __get
     @abstract Magic Method used for allowing the reading of protected variables.
     @discussion You never need to use this method, simply calling $server->variable works because of this method's existence.
     @param string - Variable to retrieve
     @result mixed - Returns the reference to the variable called.
     */
    function &__get($name)
  {
    return $this->{$name};
  }
  }

  /*! @class SocketServerClient
   @author Navarr Barnier
   @abstract A Client Instance for use with SocketServer
   */
  class SocketServerClient
  {
    /*! @var socket
     @abstract resource - The client's socket resource, for sending and receiving data with.
     */
    protected $socket;

    /*! @var ip
     @abstract string - The client's IP address, as seen by the server.
     */
    protected $ip;

    /*! @var hostname
     @abstract string - The client's hostname, as seen by the server.
     @discussion This variable is only set after calling lookup_hostname, as hostname lookups can take up a decent amount of time.
     @see lookup_hostname
     */
    protected $hostname;

    /*! @var server_clients_index
     @abstract int - The index of this client in the SocketServer's client array.
     */
    protected $server_clients_index;

    /*! @function __construct
     @param resource- The resource of the socket the client is connecting by, generally the master socket.
     @param int - The Index in the Server's client array.
     @result void
     */
    public function __construct(&$socket,$i)
  {
    $this->server_clients_index = $i;
    $this->socket = socket_accept($socket) or die("Failed to Accept");
    SocketServer::debug("New Client Connected");
    socket_getpeername($this->socket,$ip);
    $this->ip = $ip;
  }

    /*! @function lookup_hostname
     @abstract Searches for the user's hostname and stores the result to hostname.
     @see hostname
     @param void
     @result string - The hostname on success or the IP address on failure.
     */
    public function lookup_hostname()
  {
    $this->hostname = gethostbyaddr($this->ip);
    return $this->hostname;
  }

    /*! @function destroy
     @abstract Closes the socket. Thats pretty much it.
     @param void
     @result void
     */
    public function destroy()
  {
    socket_close($this->socket);
  }

    function &__get($name)
  {
    return $this->{$name};
  }

    function __isset($name)
  {
    return isset($this->{$name});
  }
} 
12
Brandon K
11
hexist

Ja, PHP bietet genau dafür eine socket_listen () - Funktion. http://php.net/manual/de/function.socket-listen.php

1
Madara Uchiha