Lee Kai Xuan / mbed-os

mbed-os

Fork of mbed-os by erkin yucel

features/netsocket/TCPServer.h@1:3deb71413561, 2017-07-20 (annotated)

Committer:
xuaner
Date:
Thu Jul 20 14:26:57 2017 +0000
Revision:
1:3deb71413561
Parent:
0:f269e3021894 
mbed_os

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elessair 0:f269e3021894 1
elessair 0:f269e3021894 2 /** \addtogroup netsocket */
elessair 0:f269e3021894 3 /** @{*/
elessair 0:f269e3021894 4 /* TCPServer
elessair 0:f269e3021894 5 * Copyright (c) 2015 ARM Limited
elessair 0:f269e3021894 6 *
elessair 0:f269e3021894 7 * Licensed under the Apache License, Version 2.0 (the "License");
elessair 0:f269e3021894 8 * you may not use this file except in compliance with the License.
elessair 0:f269e3021894 9 * You may obtain a copy of the License at
elessair 0:f269e3021894 10 *
elessair 0:f269e3021894 11 * http://www.apache.org/licenses/LICENSE-2.0
elessair 0:f269e3021894 12 *
elessair 0:f269e3021894 13 * Unless required by applicable law or agreed to in writing, software
elessair 0:f269e3021894 14 * distributed under the License is distributed on an "AS IS" BASIS,
elessair 0:f269e3021894 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elessair 0:f269e3021894 16 * See the License for the specific language governing permissions and
elessair 0:f269e3021894 17 * limitations under the License.
elessair 0:f269e3021894 18 */
elessair 0:f269e3021894 19
elessair 0:f269e3021894 20 #ifndef TCPSERVER_H
elessair 0:f269e3021894 21 #define TCPSERVER_H
elessair 0:f269e3021894 22
elessair 0:f269e3021894 23 #include "netsocket/Socket.h"
elessair 0:f269e3021894 24 #include "netsocket/TCPSocket.h"
elessair 0:f269e3021894 25 #include "netsocket/NetworkStack.h"
elessair 0:f269e3021894 26 #include "netsocket/NetworkInterface.h"
elessair 0:f269e3021894 27 #include "rtos/Semaphore.h"
elessair 0:f269e3021894 28
elessair 0:f269e3021894 29
elessair 0:f269e3021894 30 /** TCP socket server
elessair 0:f269e3021894 31 */
elessair 0:f269e3021894 32 class TCPServer : public Socket {
elessair 0:f269e3021894 33 public:
elessair 0:f269e3021894 34 /** Create an uninitialized socket
elessair 0:f269e3021894 35 *
elessair 0:f269e3021894 36 * Must call open to initialize the socket on a network stack.
elessair 0:f269e3021894 37 */
elessair 0:f269e3021894 38 TCPServer();
elessair 0:f269e3021894 39
elessair 0:f269e3021894 40 /** Create a socket on a network interface
elessair 0:f269e3021894 41 *
elessair 0:f269e3021894 42 * Creates and opens a socket on the network stack of the given
elessair 0:f269e3021894 43 * network interface.
elessair 0:f269e3021894 44 *
elessair 0:f269e3021894 45 * @param stack Network stack as target for socket
elessair 0:f269e3021894 46 */
elessair 0:f269e3021894 47 template <typename S>
elessair 0:f269e3021894 48 TCPServer(S *stack)
elessair 0:f269e3021894 49 : _pending(0), _accept_sem(0)
elessair 0:f269e3021894 50 {
elessair 0:f269e3021894 51 open(stack);
elessair 0:f269e3021894 52 }
elessair 0:f269e3021894 53
elessair 0:f269e3021894 54 /** Destroy a socket
elessair 0:f269e3021894 55 *
elessair 0:f269e3021894 56 * Closes socket if the socket is still open
elessair 0:f269e3021894 57 */
elessair 0:f269e3021894 58 virtual ~TCPServer();
elessair 0:f269e3021894 59
elessair 0:f269e3021894 60 /** Listen for connections on a TCP socket
elessair 0:f269e3021894 61 *
elessair 0:f269e3021894 62 * Marks the socket as a passive socket that can be used to accept
elessair 0:f269e3021894 63 * incoming connections.
elessair 0:f269e3021894 64 *
elessair 0:f269e3021894 65 * @param backlog Number of pending connections that can be queued
elessair 0:f269e3021894 66 * simultaneously, defaults to 1
elessair 0:f269e3021894 67 * @return 0 on success, negative error code on failure
elessair 0:f269e3021894 68 */
elessair 0:f269e3021894 69 int listen(int backlog = 1);
elessair 0:f269e3021894 70
elessair 0:f269e3021894 71 /** Accepts a connection on a TCP socket
elessair 0:f269e3021894 72 *
elessair 0:f269e3021894 73 * The server socket must be bound and set to listen for connections.
elessair 0:f269e3021894 74 * On a new connection, creates a network socket using the specified
elessair 0:f269e3021894 75 * socket instance.
elessair 0:f269e3021894 76 *
elessair 0:f269e3021894 77 * By default, accept blocks until data is sent. If socket is set to
elessair 0:f269e3021894 78 * non-blocking or times out, NSAPI_ERROR_WOULD_BLOCK is returned
elessair 0:f269e3021894 79 * immediately.
elessair 0:f269e3021894 80 *
elessair 0:f269e3021894 81 * @param socket TCPSocket instance that will handle the incoming connection.
elessair 0:f269e3021894 82 * @param address Destination for the remote address or NULL
elessair 0:f269e3021894 83 * @return 0 on success, negative error code on failure
elessair 0:f269e3021894 84 */
elessair 0:f269e3021894 85 int accept(TCPSocket *connection, SocketAddress *address = NULL);
elessair 0:f269e3021894 86
elessair 0:f269e3021894 87 protected:
elessair 0:f269e3021894 88 virtual nsapi_protocol_t get_proto();
elessair 0:f269e3021894 89 virtual void event();
elessair 0:f269e3021894 90
elessair 0:f269e3021894 91 volatile unsigned _pending;
elessair 0:f269e3021894 92 rtos::Semaphore _accept_sem;
elessair 0:f269e3021894 93 };
elessair 0:f269e3021894 94
elessair 0:f269e3021894 95
elessair 0:f269e3021894 96 #endif
elessair 0:f269e3021894 97
elessair 0:f269e3021894 98 /** @}*/