tool/mbed/mbed-sdk/libraries/net/lwip/Socket/TCPSocketServer.cpp

   1 /* Copyright (C) 2012 mbed.org, MIT License
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
   4  * and associated documentation files (the "Software"), to deal in the Software without restriction,
   5  * including without limitation the rights to use, copy, modify, merge, publish, distribute,
   6  * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
   7  * furnished to do so, subject to the following conditions:
   8  *
   9  * The above copyright notice and this permission notice shall be included in all copies or
  10  * substantial portions of the Software.
  11  *
  12  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
  13  * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  14  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  15  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  16  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  17  */
  18 #include "TCPSocketServer.h"
  19
  20 #include <cstring>
  21
  22 using std::memset;
  23 using std::memcpy;
  24
  25 TCPSocketServer::TCPSocketServer() {
  26
  27 }
  28
  29 int TCPSocketServer::bind(int port) {
  30     if (init_socket(SOCK_STREAM) < 0)
  31         return -1;
  32
  33     struct sockaddr_in localHost;
  34     memset(&localHost, 0, sizeof(localHost));
  35
  36     localHost.sin_family = AF_INET;
  37     localHost.sin_port = htons(port);
  38     localHost.sin_addr.s_addr = INADDR_ANY;
  39
  40     if (lwip_bind(_sock_fd, (const struct sockaddr *) &localHost, sizeof(localHost)) < 0) {
  41         close();
  42         return -1;
  43     }
  44
  45     return 0;
  46 }
  47
  48 int TCPSocketServer::listen(int max) {
  49     if (_sock_fd < 0)
  50         return -1;
  51
  52     if (lwip_listen(_sock_fd, max) < 0) {
  53         close();
  54         return -1;
  55     }
  56
  57     return 0;
  58 }
  59
  60 int TCPSocketServer::accept(TCPSocketConnection& connection) {
  61     if (_sock_fd < 0)
  62         return -1;
  63
  64     if (!_blocking) {
  65         TimeInterval timeout(_timeout);
  66         if (wait_readable(timeout) != 0)
  67             return -1;
  68     }
  69     connection.reset_address();
  70     socklen_t newSockRemoteHostLen = sizeof(connection._remoteHost);
  71     int fd = lwip_accept(_sock_fd, (struct sockaddr*) &connection._remoteHost, &newSockRemoteHostLen);
  72     if (fd < 0)
  73         return -1; //Accept failed
  74     connection._sock_fd = fd;
  75     connection._is_connected = true;
  76
  77     return 0;
  78 }