THRIFT-778. php: PHP socket listening server

This patch which adds TServerTransport/TServerSocket, along with a generic TServer and TSimpleServer implementation.

Patch: Nick Jones

git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@984864 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/php/src/transport/TServerSocket.php b/lib/php/src/transport/TServerSocket.php
new file mode 100644
index 0000000..cac12ab
--- /dev/null
+++ b/lib/php/src/transport/TServerSocket.php
@@ -0,0 +1,96 @@
+<?php
+
+include_once $GLOBALS['THRIFT_ROOT'].'/transport/TServerTransport.php';
+include_once $GLOBALS['THRIFT_ROOT'].'/transport/TSocket.php';
+
+/**
+ * Socket implementation of a server agent.
+ *
+ * @package thrift.transport
+ */
+class TServerSocket extends TServerTransport {
+
+  /**
+   * Handle for the listener socket
+   *
+   * @var resource
+   */
+  private $listener_;
+
+  /**
+   * Port for the listener to listen on
+   *
+   * @var int
+   */
+  private $port_;
+
+  /**
+   * Timeout when listening for a new client
+   *
+   * @var int
+   */
+  private $acceptTimeout_ = 30000;
+
+  /**
+   * Host to listen on
+   *
+   * @var string
+   */
+  private $host_;
+
+  /**
+   * ServerSocket constructor
+   *
+   * @param string $host        Host to listen on
+   * @param int $port           Port to listen on
+   * @return void
+   */
+  public function __construct($host = 'localhost', $port = 9090) {
+    $this->host_ = $host;
+    $this->port_ = $port;
+  }
+
+  /**
+   * Sets the accept timeout
+   *
+   * @param int $acceptTimeout
+   * @return void
+   */
+  public function setAcceptTimeout($acceptTimeout) {
+    $this->acceptTimeout_ = $acceptTimeout;
+  }
+
+  /**
+   * Opens a new socket server handle
+   *
+   * @return void
+   */
+  public function listen() {
+    $this->listener_ = stream_socket_server('tcp://' . $this->host_ . ':' . $this->port_);
+  }
+
+  /**
+   * Closes the socket server handle
+   *
+   * @return void
+   */
+  public function close() {
+    @fclose($this->listener_);
+    $this->listener_ = null;
+  }
+
+  /**
+   * Implementation of accept. If not client is accepted in the given time
+   *
+   * @return TSocket
+   */
+  protected function acceptImpl() {
+    $handle = @stream_socket_accept($this->listener_, $this->acceptTimeout_ / 1000.0);
+    if(!$handle) return null;
+
+    $socket = new TSocket();
+    $socket->setHandle($handle);
+    
+    return $socket;
+  }
+}