TCPSocketServer.cpp

00001 /* Copyright (c) 2013 Henry Leinen (henry[dot]leinen [at] online [dot] de)
00002  *
00003  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00004  * and associated documentation files (the "Software"), to deal in the Software without restriction,
00005  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
00006  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
00007  * furnished to do so, subject to the following conditions:
00008  *
00009  * The above copyright notice and this permission notice shall be included in all copies or
00010  * substantial portions of the Software.
00011  *
00012  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00013  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00014  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00015  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00016  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00017  */
00018 #include "mbed.h"
00019 #include "TCPSocketServer.h"
00020 
00021 TCPSocketServer::TCPSocketServer() 
00022 {
00023 }
00024 
00025 
00026 int TCPSocketServer::bind(int port)
00027 {
00028     _socket = Wifi::getInstance()->SocketCreate(TCP);
00029     
00030     if (_socket == InvalidSocketHandle) {
00031         return -1;
00032     }
00033         
00034     if (!Wifi::getInstance()->SocketBind(_socket, port)) {
00035         Wifi::getInstance()->SocketClose(_socket);
00036         return -1;
00037     }
00038     
00039     return 0;
00040 }
00041 
00042 int TCPSocketServer::listen(int backlog)
00043 {
00044     if (_socket == InvalidSocketHandle)
00045         return -1;
00046         
00047     if (!Wifi::getInstance()->SocketListen(_socket, backlog)) {
00048         Wifi::getInstance()->SocketClose(_socket);
00049         return -1;
00050     }
00051     
00052     return backlog;
00053 }
00054 
00055 int TCPSocketServer::accept(TCPSocketConnection &connection)
00056 {
00057     if (_socket == InvalidSocketHandle)
00058         return -1;
00059         
00060     if (_blocking) {
00061         Timer t;
00062         
00063         t.start();
00064         
00065         while( t.read_ms() < _timeout ) {
00066             if (Wifi::getInstance()->SocketAccept(_socket, connection._socket, connection._port, connection._ipAddress)) {
00067                 if (connection._socket == InvalidSocketHandle) {
00068                 } else {
00069                     connection._is_connected = true;
00070                     return 0;
00071                 }
00072             } else {
00073                 break;
00074             }
00075         }
00076         
00077         //  Attempt timed out
00078         return -1;
00079     } else {
00080         //  non blocking, so we just check wheather we are connected
00081         if (Wifi::getInstance()->SocketAccept(_socket, connection._socket, connection._port, connection._ipAddress)) {
00082             if (connection._socket == InvalidSocketHandle) {
00083                 connection._is_connected = false;
00084                 return -1;
00085             } else {
00086                 connection._is_connected = true;
00087                 return 0;
00088             }
00089         } else {
00090             connection._is_connected = false;
00091             return -1;
00092         } 
00093     }
00094 }