Ethernetwebsoc
Dependencies: C12832_lcd LM75B WebSocketClient mbed-rtos mbed Socket lwip-eth lwip-sys lwip
UDPSocket.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 00019 #include "Socket/UDPSocket.h" 00020 00021 #include <cstring> 00022 00023 using std::memset; 00024 00025 UDPSocket::UDPSocket() { 00026 } 00027 00028 int UDPSocket::init(void) { 00029 return init_socket(SOCK_DGRAM); 00030 } 00031 00032 // Server initialization 00033 int UDPSocket::bind(int port) { 00034 if (init_socket(SOCK_DGRAM) < 0) 00035 return -1; 00036 00037 struct sockaddr_in localHost; 00038 std::memset(&localHost, 0, sizeof(localHost)); 00039 00040 localHost.sin_family = AF_INET; 00041 localHost.sin_port = htons(port); 00042 localHost.sin_addr.s_addr = INADDR_ANY; 00043 00044 if (lwip_bind(_sock_fd, (const struct sockaddr *) &localHost, sizeof(localHost)) < 0) { 00045 close(); 00046 return -1; 00047 } 00048 00049 return 0; 00050 } 00051 00052 // -1 if unsuccessful, else number of bytes written 00053 int UDPSocket::sendTo(Endpoint &remote, char *packet, int length) { 00054 if (_sock_fd < 0) 00055 return -1; 00056 00057 if (!_blocking) { 00058 TimeInterval timeout(_timeout); 00059 if (wait_writable(timeout) != 0) 00060 return 0; 00061 } 00062 00063 return lwip_sendto (_sock_fd, packet, length, 0, (const struct sockaddr *) &remote._remoteHost, sizeof(remote._remoteHost)); 00064 } 00065 00066 // -1 if unsuccessful, else number of bytes received 00067 int UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length) { 00068 if (_sock_fd < 0) 00069 return -1; 00070 00071 if (!_blocking) { 00072 TimeInterval timeout(_timeout); 00073 if (wait_readable(timeout) != 0) 00074 return 0; 00075 } 00076 remote.reset_address(); 00077 socklen_t remoteHostLen = sizeof(remote._remoteHost); 00078 return lwip_recvfrom(_sock_fd, buffer, length, 0, (struct sockaddr*) &remote._remoteHost, &remoteHostLen); 00079 }
Generated on Tue Jul 12 2022 19:26:07 by 1.7.2