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Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

F7_Ethernet/Socket/TCPSocketConnection.cpp@0:f9b6112278fe, 2016-06-18 (annotated)

Committer:
DieterGraef
Date:
Sat Jun 18 10:49:12 2016 +0000
Revision:
0:f9b6112278fe
Ethernet for the NUCLEO STM32F746 Board Testprogram uses DHCP and NTP to set the clock

Who changed what in which revision?

UserRevisionLine numberNew contents of line
DieterGraef 0:f9b6112278fe 1 /* Copyright (C) 2012 mbed.org, MIT License
DieterGraef 0:f9b6112278fe 2 *
DieterGraef 0:f9b6112278fe 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
DieterGraef 0:f9b6112278fe 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
DieterGraef 0:f9b6112278fe 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
DieterGraef 0:f9b6112278fe 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
DieterGraef 0:f9b6112278fe 7 * furnished to do so, subject to the following conditions:
DieterGraef 0:f9b6112278fe 8 *
DieterGraef 0:f9b6112278fe 9 * The above copyright notice and this permission notice shall be included in all copies or
DieterGraef 0:f9b6112278fe 10 * substantial portions of the Software.
DieterGraef 0:f9b6112278fe 11 *
DieterGraef 0:f9b6112278fe 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
DieterGraef 0:f9b6112278fe 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
DieterGraef 0:f9b6112278fe 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DieterGraef 0:f9b6112278fe 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
DieterGraef 0:f9b6112278fe 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
DieterGraef 0:f9b6112278fe 17 */
DieterGraef 0:f9b6112278fe 18 #include "TCPSocketConnection.h"
DieterGraef 0:f9b6112278fe 19 #include <cstring>
DieterGraef 0:f9b6112278fe 20
DieterGraef 0:f9b6112278fe 21 using std::memset;
DieterGraef 0:f9b6112278fe 22 using std::memcpy;
DieterGraef 0:f9b6112278fe 23
DieterGraef 0:f9b6112278fe 24 TCPSocketConnection::TCPSocketConnection() :
DieterGraef 0:f9b6112278fe 25 _is_connected(false) {
DieterGraef 0:f9b6112278fe 26 }
DieterGraef 0:f9b6112278fe 27
DieterGraef 0:f9b6112278fe 28 int TCPSocketConnection::set_source_port(const int port) {
DieterGraef 0:f9b6112278fe 29 tcp_preselect_port(port);
DieterGraef 0:f9b6112278fe 30 return 0;
DieterGraef 0:f9b6112278fe 31 }
DieterGraef 0:f9b6112278fe 32
DieterGraef 0:f9b6112278fe 33 int TCPSocketConnection::connect(const char* host, const int port) {
DieterGraef 0:f9b6112278fe 34
DieterGraef 0:f9b6112278fe 35 if (init_socket(SOCK_STREAM) < 0)
DieterGraef 0:f9b6112278fe 36 return -1;
DieterGraef 0:f9b6112278fe 37
DieterGraef 0:f9b6112278fe 38 if (set_address(host, port) != 0)
DieterGraef 0:f9b6112278fe 39 return -1;
DieterGraef 0:f9b6112278fe 40
DieterGraef 0:f9b6112278fe 41 if (lwip_connect(_sock_fd, (const struct sockaddr *) &_remoteHost, sizeof(_remoteHost)) < 0) {
DieterGraef 0:f9b6112278fe 42 close();
DieterGraef 0:f9b6112278fe 43 return -1;
DieterGraef 0:f9b6112278fe 44 }
DieterGraef 0:f9b6112278fe 45 _is_connected = true;
DieterGraef 0:f9b6112278fe 46
DieterGraef 0:f9b6112278fe 47 return 0;
DieterGraef 0:f9b6112278fe 48 }
DieterGraef 0:f9b6112278fe 49
DieterGraef 0:f9b6112278fe 50 bool TCPSocketConnection::is_connected(void) {
DieterGraef 0:f9b6112278fe 51 if(_sock_fd<0)_is_connected=false;
DieterGraef 0:f9b6112278fe 52 return _is_connected;
DieterGraef 0:f9b6112278fe 53 }
DieterGraef 0:f9b6112278fe 54
DieterGraef 0:f9b6112278fe 55 int TCPSocketConnection::send(char* data, int length) {
DieterGraef 0:f9b6112278fe 56 if ((_sock_fd < 0) || !_is_connected)
DieterGraef 0:f9b6112278fe 57 return -1;
DieterGraef 0:f9b6112278fe 58
DieterGraef 0:f9b6112278fe 59 if (!_blocking) {
DieterGraef 0:f9b6112278fe 60 TimeInterval timeout(_timeout);
DieterGraef 0:f9b6112278fe 61 if (wait_writable(timeout) != 0)
DieterGraef 0:f9b6112278fe 62 return -1;
DieterGraef 0:f9b6112278fe 63 }
DieterGraef 0:f9b6112278fe 64
DieterGraef 0:f9b6112278fe 65 int n = lwip_send(_sock_fd, data, length, 0);
DieterGraef 0:f9b6112278fe 66 _is_connected = (n != 0);
DieterGraef 0:f9b6112278fe 67
DieterGraef 0:f9b6112278fe 68 return n;
DieterGraef 0:f9b6112278fe 69 }
DieterGraef 0:f9b6112278fe 70
DieterGraef 0:f9b6112278fe 71
DieterGraef 0:f9b6112278fe 72 // -1 if unsuccessful, else number of bytes written
DieterGraef 0:f9b6112278fe 73 int TCPSocketConnection::send_all(char* data, int length) {
DieterGraef 0:f9b6112278fe 74 if ((_sock_fd < 0) || !_is_connected)
DieterGraef 0:f9b6112278fe 75 return -1;
DieterGraef 0:f9b6112278fe 76
DieterGraef 0:f9b6112278fe 77 int writtenLen = 0;
DieterGraef 0:f9b6112278fe 78 TimeInterval timeout(_timeout);
DieterGraef 0:f9b6112278fe 79 while (writtenLen < length) {
DieterGraef 0:f9b6112278fe 80 if (!_blocking) {
DieterGraef 0:f9b6112278fe 81 // Wait for socket to be writeable
DieterGraef 0:f9b6112278fe 82 if (wait_writable(timeout) != 0)
DieterGraef 0:f9b6112278fe 83 return writtenLen;
DieterGraef 0:f9b6112278fe 84 }
DieterGraef 0:f9b6112278fe 85
DieterGraef 0:f9b6112278fe 86 int ret = lwip_send(_sock_fd, data + writtenLen, length - writtenLen, 0);
DieterGraef 0:f9b6112278fe 87 if (ret > 0) {
DieterGraef 0:f9b6112278fe 88 writtenLen += ret;
DieterGraef 0:f9b6112278fe 89 continue;
DieterGraef 0:f9b6112278fe 90 } else if (ret == 0) {
DieterGraef 0:f9b6112278fe 91 _is_connected = false;
DieterGraef 0:f9b6112278fe 92 return writtenLen;
DieterGraef 0:f9b6112278fe 93 } else {
DieterGraef 0:f9b6112278fe 94 return -1; //Connnection error
DieterGraef 0:f9b6112278fe 95 }
DieterGraef 0:f9b6112278fe 96 }
DieterGraef 0:f9b6112278fe 97 return writtenLen;
DieterGraef 0:f9b6112278fe 98 }
DieterGraef 0:f9b6112278fe 99
DieterGraef 0:f9b6112278fe 100 int TCPSocketConnection::receive(char* data, int length) {
DieterGraef 0:f9b6112278fe 101 if ((_sock_fd < 0) || !_is_connected)
DieterGraef 0:f9b6112278fe 102 return -1;
DieterGraef 0:f9b6112278fe 103
DieterGraef 0:f9b6112278fe 104 if (!_blocking) {
DieterGraef 0:f9b6112278fe 105 TimeInterval timeout(_timeout);
DieterGraef 0:f9b6112278fe 106 if (wait_readable(timeout) != 0)
DieterGraef 0:f9b6112278fe 107 return -1;
DieterGraef 0:f9b6112278fe 108 }
DieterGraef 0:f9b6112278fe 109
DieterGraef 0:f9b6112278fe 110 int n = lwip_recv(_sock_fd, data, length, 0);
DieterGraef 0:f9b6112278fe 111 _is_connected = (n != 0);
DieterGraef 0:f9b6112278fe 112
DieterGraef 0:f9b6112278fe 113 return n;
DieterGraef 0:f9b6112278fe 114 }
DieterGraef 0:f9b6112278fe 115
DieterGraef 0:f9b6112278fe 116 // -1 if unsuccessful, else number of bytes received
DieterGraef 0:f9b6112278fe 117 int TCPSocketConnection::receive_all(char* data, int length) {
DieterGraef 0:f9b6112278fe 118 if ((_sock_fd < 0) || !_is_connected)
DieterGraef 0:f9b6112278fe 119 return -1;
DieterGraef 0:f9b6112278fe 120
DieterGraef 0:f9b6112278fe 121 int readLen = 0;
DieterGraef 0:f9b6112278fe 122 TimeInterval timeout(_timeout);
DieterGraef 0:f9b6112278fe 123 while (readLen < length) {
DieterGraef 0:f9b6112278fe 124 if (!_blocking) {
DieterGraef 0:f9b6112278fe 125 //Wait for socket to be readable
DieterGraef 0:f9b6112278fe 126 if (wait_readable(timeout) != 0)
DieterGraef 0:f9b6112278fe 127 return readLen;
DieterGraef 0:f9b6112278fe 128 }
DieterGraef 0:f9b6112278fe 129
DieterGraef 0:f9b6112278fe 130 int ret = lwip_recv(_sock_fd, data + readLen, length - readLen, 0);
DieterGraef 0:f9b6112278fe 131 if (ret > 0) {
DieterGraef 0:f9b6112278fe 132 readLen += ret;
DieterGraef 0:f9b6112278fe 133 } else if (ret == 0) {
DieterGraef 0:f9b6112278fe 134 _is_connected = false;
DieterGraef 0:f9b6112278fe 135 return readLen;
DieterGraef 0:f9b6112278fe 136 } else {
DieterGraef 0:f9b6112278fe 137 return -1; //Connnection error
DieterGraef 0:f9b6112278fe 138 }
DieterGraef 0:f9b6112278fe 139 }
DieterGraef 0:f9b6112278fe 140 return readLen;
DieterGraef 0:f9b6112278fe 141 }