Diff: features/netsocket/TCPServer.h

Revision:

0:b74591d5ab33

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/features/netsocket/TCPServer.h	Mon Dec 11 17:54:04 2017 +0000
@@ -0,0 +1,95 @@
+
+/* TCPServer
+ * Copyright (c) 2015 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef TCPSERVER_H
+#define TCPSERVER_H
+
+#include "netsocket/Socket.h"
+#include "netsocket/TCPSocket.h"
+#include "netsocket/NetworkStack.h"
+#include "netsocket/NetworkInterface.h"
+#include "rtos/Semaphore.h"
+
+
+/** TCP socket server
+ *  @addtogroup netsocket
+ */
+class TCPServer : public Socket {
+public:
+    /** Create an uninitialized socket
+     *
+     *  Must call open to initialize the socket on a network stack.
+     */
+    TCPServer();
+
+    /** Create a socket on a network interface
+     *
+     *  Creates and opens a socket on the network stack of the given
+     *  network interface.
+     *
+     *  @param stack    Network stack as target for socket
+     */
+    template <typename S>
+    TCPServer(S *stack)
+        : _pending(0), _accept_sem(0)
+    {
+        open(stack);
+    }
+
+    /** Destroy a socket
+     *
+     *  Closes socket if the socket is still open
+     */
+    virtual ~TCPServer();
+
+    /** Listen for connections on a TCP socket
+     *
+     *  Marks the socket as a passive socket that can be used to accept
+     *  incoming connections.
+     *
+     *  @param backlog  Number of pending connections that can be queued
+     *                  simultaneously, defaults to 1
+     *  @return         0 on success, negative error code on failure
+     */
+    nsapi_error_t listen(int backlog = 1);
+    
+    /** Accepts a connection on a TCP socket
+     *
+     *  The server socket must be bound and set to listen for connections.
+     *  On a new connection, creates a network socket using the specified
+     *  socket instance.
+     *
+     *  By default, accept blocks until data is sent. If socket is set to
+     *  non-blocking or times out, NSAPI_ERROR_WOULD_BLOCK is returned
+     *  immediately.
+     *
+     *  @param connection TCPSocket instance that will handle the incoming connection.
+     *  @param address    Destination for the remote address or NULL
+     *  @return           0 on success, negative error code on failure
+     */
+    nsapi_error_t accept(TCPSocket *connection, SocketAddress *address = NULL);
+
+protected:
+    virtual nsapi_protocol_t get_proto();
+    virtual void event();
+
+    volatile unsigned _pending;
+    rtos::Semaphore _accept_sem;
+};
+
+
+#endif