TCPSocketServer.cpp

00001 /* Copyright (C) 2012 mbed.org, MIT License
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 "TCPSocketServer.h"
00019 
00020 #include <cstring>
00021 
00022 using std::memset;
00023 using std::memcpy;
00024 
00025 TCPSocketServer::TCPSocketServer() {
00026 
00027 }
00028 
00029 int TCPSocketServer::bind(int port) {
00030     if (init_socket(SOCK_STREAM) < 0)
00031         return -1;
00032 
00033     struct sockaddr_in localHost;
00034     memset(&localHost, 0, sizeof(localHost));
00035 
00036     localHost.sin_family = AF_INET;
00037     localHost.sin_port = htons(port);
00038     localHost.sin_addr.s_addr = INADDR_ANY;
00039 
00040     if (lwip_bind(_sock_fd, (const struct sockaddr *) &localHost, sizeof(localHost)) < 0) {
00041         close();
00042         return -1;
00043     }
00044 
00045     return 0;
00046 }
00047 
00048 int TCPSocketServer::listen(int max) {
00049     if (_sock_fd < 0)
00050         return -1;
00051 
00052     if (lwip_listen(_sock_fd, max) < 0) {
00053         close();
00054         return -1;
00055     }
00056 
00057     return 0;
00058 }
00059 
00060 int TCPSocketServer::accept(TCPSocketConnection& connection) {
00061     if (_sock_fd < 0)
00062         return -1;
00063 
00064     if (!_blocking) {
00065         TimeInterval timeout(_timeout);
00066         if (wait_readable(timeout) != 0)
00067             return -1;
00068     }
00069     connection.reset_address();
00070     socklen_t newSockRemoteHostLen = sizeof(connection._remoteHost);
00071     int fd = lwip_accept(_sock_fd, (struct sockaddr*) &connection._remoteHost, &newSockRemoteHostLen);
00072     if (fd < 0)
00073         return -1; //Accept failed
00074     connection._sock_fd = fd;
00075     connection._is_connected = true;
00076     connection.set_address(connection._remoteHost.sin_addr);
00077     return 0;
00078 }