SiSK / EthernetInterface

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Socket/TCPSocketConnection.cpp@0:d7bd7384a37c, 2016-12-07 (annotated)

Committer:
grzemich
Date:
Wed Dec 07 23:47:50 2016 +0000
Revision:
0:d7bd7384a37c
dgd

Who changed what in which revision?

UserRevisionLine numberNew contents of line
grzemich 0:d7bd7384a37c 1 /* Copyright (C) 2012 mbed.org, MIT License
grzemich 0:d7bd7384a37c 2 *
grzemich 0:d7bd7384a37c 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
grzemich 0:d7bd7384a37c 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
grzemich 0:d7bd7384a37c 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
grzemich 0:d7bd7384a37c 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
grzemich 0:d7bd7384a37c 7 * furnished to do so, subject to the following conditions:
grzemich 0:d7bd7384a37c 8 *
grzemich 0:d7bd7384a37c 9 * The above copyright notice and this permission notice shall be included in all copies or
grzemich 0:d7bd7384a37c 10 * substantial portions of the Software.
grzemich 0:d7bd7384a37c 11 *
grzemich 0:d7bd7384a37c 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
grzemich 0:d7bd7384a37c 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
grzemich 0:d7bd7384a37c 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
grzemich 0:d7bd7384a37c 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
grzemich 0:d7bd7384a37c 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
grzemich 0:d7bd7384a37c 17 */
grzemich 0:d7bd7384a37c 18 #include "TCPSocketConnection.h"
grzemich 0:d7bd7384a37c 19 #include <cstring>
grzemich 0:d7bd7384a37c 20
grzemich 0:d7bd7384a37c 21 using std::memset;
grzemich 0:d7bd7384a37c 22 using std::memcpy;
grzemich 0:d7bd7384a37c 23
grzemich 0:d7bd7384a37c 24 TCPSocketConnection::TCPSocketConnection() :
grzemich 0:d7bd7384a37c 25 _is_connected(false) {
grzemich 0:d7bd7384a37c 26 }
grzemich 0:d7bd7384a37c 27
grzemich 0:d7bd7384a37c 28 int TCPSocketConnection::connect(const char* host, const int port) {
grzemich 0:d7bd7384a37c 29 if (init_socket(SOCK_STREAM) < 0)
grzemich 0:d7bd7384a37c 30 return -1;
grzemich 0:d7bd7384a37c 31
grzemich 0:d7bd7384a37c 32 if (set_address(host, port) != 0)
grzemich 0:d7bd7384a37c 33 return -1;
grzemich 0:d7bd7384a37c 34
grzemich 0:d7bd7384a37c 35 if (lwip_connect(_sock_fd, (const struct sockaddr *) &_remoteHost, sizeof(_remoteHost)) < 0) {
grzemich 0:d7bd7384a37c 36 close();
grzemich 0:d7bd7384a37c 37 return -1;
grzemich 0:d7bd7384a37c 38 }
grzemich 0:d7bd7384a37c 39 _is_connected = true;
grzemich 0:d7bd7384a37c 40
grzemich 0:d7bd7384a37c 41 return 0;
grzemich 0:d7bd7384a37c 42 }
grzemich 0:d7bd7384a37c 43
grzemich 0:d7bd7384a37c 44 bool TCPSocketConnection::is_connected(void) {
grzemich 0:d7bd7384a37c 45 return _is_connected;
grzemich 0:d7bd7384a37c 46 }
grzemich 0:d7bd7384a37c 47
grzemich 0:d7bd7384a37c 48 int TCPSocketConnection::send(char* data, int length) {
grzemich 0:d7bd7384a37c 49 if ((_sock_fd < 0) || !_is_connected)
grzemich 0:d7bd7384a37c 50 return -1;
grzemich 0:d7bd7384a37c 51
grzemich 0:d7bd7384a37c 52 if (!_blocking) {
grzemich 0:d7bd7384a37c 53 TimeInterval timeout(_timeout);
grzemich 0:d7bd7384a37c 54 if (wait_writable(timeout) != 0)
grzemich 0:d7bd7384a37c 55 return -1;
grzemich 0:d7bd7384a37c 56 }
grzemich 0:d7bd7384a37c 57
grzemich 0:d7bd7384a37c 58 int n = lwip_send(_sock_fd, data, length, 0);
grzemich 0:d7bd7384a37c 59 _is_connected = (n != 0);
grzemich 0:d7bd7384a37c 60
grzemich 0:d7bd7384a37c 61 return n;
grzemich 0:d7bd7384a37c 62 }
grzemich 0:d7bd7384a37c 63
grzemich 0:d7bd7384a37c 64 // -1 if unsuccessful, else number of bytes written
grzemich 0:d7bd7384a37c 65 int TCPSocketConnection::send_all(char* data, int length) {
grzemich 0:d7bd7384a37c 66 if ((_sock_fd < 0) || !_is_connected)
grzemich 0:d7bd7384a37c 67 return -1;
grzemich 0:d7bd7384a37c 68
grzemich 0:d7bd7384a37c 69 int writtenLen = 0;
grzemich 0:d7bd7384a37c 70 TimeInterval timeout(_timeout);
grzemich 0:d7bd7384a37c 71 while (writtenLen < length) {
grzemich 0:d7bd7384a37c 72 if (!_blocking) {
grzemich 0:d7bd7384a37c 73 // Wait for socket to be writeable
grzemich 0:d7bd7384a37c 74 if (wait_writable(timeout) != 0)
grzemich 0:d7bd7384a37c 75 return writtenLen;
grzemich 0:d7bd7384a37c 76 }
grzemich 0:d7bd7384a37c 77
grzemich 0:d7bd7384a37c 78 int ret = lwip_send(_sock_fd, data + writtenLen, length - writtenLen, 0);
grzemich 0:d7bd7384a37c 79 if (ret > 0) {
grzemich 0:d7bd7384a37c 80 writtenLen += ret;
grzemich 0:d7bd7384a37c 81 continue;
grzemich 0:d7bd7384a37c 82 } else if (ret == 0) {
grzemich 0:d7bd7384a37c 83 _is_connected = false;
grzemich 0:d7bd7384a37c 84 return writtenLen;
grzemich 0:d7bd7384a37c 85 } else {
grzemich 0:d7bd7384a37c 86 return -1; //Connnection error
grzemich 0:d7bd7384a37c 87 }
grzemich 0:d7bd7384a37c 88 }
grzemich 0:d7bd7384a37c 89 return writtenLen;
grzemich 0:d7bd7384a37c 90 }
grzemich 0:d7bd7384a37c 91
grzemich 0:d7bd7384a37c 92 int TCPSocketConnection::receive(char* data, int length) {
grzemich 0:d7bd7384a37c 93 if ((_sock_fd < 0) || !_is_connected)
grzemich 0:d7bd7384a37c 94 return -1;
grzemich 0:d7bd7384a37c 95
grzemich 0:d7bd7384a37c 96 if (!_blocking) {
grzemich 0:d7bd7384a37c 97 TimeInterval timeout(_timeout);
grzemich 0:d7bd7384a37c 98 if (wait_readable(timeout) != 0)
grzemich 0:d7bd7384a37c 99 return -1;
grzemich 0:d7bd7384a37c 100 }
grzemich 0:d7bd7384a37c 101
grzemich 0:d7bd7384a37c 102 int n = lwip_recv(_sock_fd, data, length, 0);
grzemich 0:d7bd7384a37c 103 _is_connected = (n != 0);
grzemich 0:d7bd7384a37c 104
grzemich 0:d7bd7384a37c 105 return n;
grzemich 0:d7bd7384a37c 106 }
grzemich 0:d7bd7384a37c 107
grzemich 0:d7bd7384a37c 108 // -1 if unsuccessful, else number of bytes received
grzemich 0:d7bd7384a37c 109 int TCPSocketConnection::receive_all(char* data, int length) {
grzemich 0:d7bd7384a37c 110 if ((_sock_fd < 0) || !_is_connected)
grzemich 0:d7bd7384a37c 111 return -1;
grzemich 0:d7bd7384a37c 112
grzemich 0:d7bd7384a37c 113 int readLen = 0;
grzemich 0:d7bd7384a37c 114 TimeInterval timeout(_timeout);
grzemich 0:d7bd7384a37c 115 while (readLen < length) {
grzemich 0:d7bd7384a37c 116 if (!_blocking) {
grzemich 0:d7bd7384a37c 117 //Wait for socket to be readable
grzemich 0:d7bd7384a37c 118 if (wait_readable(timeout) != 0)
grzemich 0:d7bd7384a37c 119 return readLen;
grzemich 0:d7bd7384a37c 120 }
grzemich 0:d7bd7384a37c 121
grzemich 0:d7bd7384a37c 122 int ret = lwip_recv(_sock_fd, data + readLen, length - readLen, 0);
grzemich 0:d7bd7384a37c 123 if (ret > 0) {
grzemich 0:d7bd7384a37c 124 readLen += ret;
grzemich 0:d7bd7384a37c 125 } else if (ret == 0) {
grzemich 0:d7bd7384a37c 126 _is_connected = false;
grzemich 0:d7bd7384a37c 127 return readLen;
grzemich 0:d7bd7384a37c 128 } else {
grzemich 0:d7bd7384a37c 129 return -1; //Connnection error
grzemich 0:d7bd7384a37c 130 }
grzemich 0:d7bd7384a37c 131 }
grzemich 0:d7bd7384a37c 132 return readLen;
grzemich 0:d7bd7384a37c 133 }