Albin Sebastian / WIZnetInterface

Library for ethernet

Dependents:   VC0706_FTP_Client_Ethernet_MQTT

Fork of WIZnetInterface by Akshay Tom

Socket/TCPSocketConnection.cpp@0:6f28332c466f, 2015-06-15 (annotated)

Committer:
Soohwan Kim
Date:
Mon Jun 15 11:18:37 2015 +0900
Revision:
0:6f28332c466f
Child:
20:5a1969320666
initial version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Soohwan Kim 0:6f28332c466f 1 /* Copyright (C) 2012 mbed.org, MIT License
Soohwan Kim 0:6f28332c466f 2 *
Soohwan Kim 0:6f28332c466f 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
Soohwan Kim 0:6f28332c466f 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
Soohwan Kim 0:6f28332c466f 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
Soohwan Kim 0:6f28332c466f 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
Soohwan Kim 0:6f28332c466f 7 * furnished to do so, subject to the following conditions:
Soohwan Kim 0:6f28332c466f 8 *
Soohwan Kim 0:6f28332c466f 9 * The above copyright notice and this permission notice shall be included in all copies or
Soohwan Kim 0:6f28332c466f 10 * substantial portions of the Software.
Soohwan Kim 0:6f28332c466f 11 *
Soohwan Kim 0:6f28332c466f 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
Soohwan Kim 0:6f28332c466f 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
Soohwan Kim 0:6f28332c466f 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
Soohwan Kim 0:6f28332c466f 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Soohwan Kim 0:6f28332c466f 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Soohwan Kim 0:6f28332c466f 17 */
Soohwan Kim 0:6f28332c466f 18
Soohwan Kim 0:6f28332c466f 19 #include "TCPSocketConnection.h"
Soohwan Kim 0:6f28332c466f 20 #include <cstring>
Soohwan Kim 0:6f28332c466f 21
Soohwan Kim 0:6f28332c466f 22 using std::memset;
Soohwan Kim 0:6f28332c466f 23 using std::memcpy;
Soohwan Kim 0:6f28332c466f 24
Soohwan Kim 0:6f28332c466f 25 // not a big code.
Soohwan Kim 0:6f28332c466f 26 // refer from EthernetInterface by mbed official driver
Soohwan Kim 0:6f28332c466f 27 TCPSocketConnection::TCPSocketConnection() :
Soohwan Kim 0:6f28332c466f 28 _is_connected(false)
Soohwan Kim 0:6f28332c466f 29 {
Soohwan Kim 0:6f28332c466f 30 }
Soohwan Kim 0:6f28332c466f 31
Soohwan Kim 0:6f28332c466f 32 int TCPSocketConnection::connect(const char* host, const int port)
Soohwan Kim 0:6f28332c466f 33 {
Soohwan Kim 0:6f28332c466f 34 if (_sock_fd < 0) {
Soohwan Kim 0:6f28332c466f 35 _sock_fd = eth->new_socket();
Soohwan Kim 0:6f28332c466f 36 if (_sock_fd < 0) {
Soohwan Kim 0:6f28332c466f 37 return -1;
Soohwan Kim 0:6f28332c466f 38 }
Soohwan Kim 0:6f28332c466f 39 }
Soohwan Kim 0:6f28332c466f 40 if (set_address(host, port) != 0) {
Soohwan Kim 0:6f28332c466f 41 return -1;
Soohwan Kim 0:6f28332c466f 42 }
Soohwan Kim 0:6f28332c466f 43 if (!eth->connect(_sock_fd, get_address(), port)) {
Soohwan Kim 0:6f28332c466f 44 return -1;
Soohwan Kim 0:6f28332c466f 45 }
Soohwan Kim 0:6f28332c466f 46 set_blocking(false);
Soohwan Kim 0:6f28332c466f 47 // add code refer from EthernetInterface.
Soohwan Kim 0:6f28332c466f 48 _is_connected = true;
Soohwan Kim 0:6f28332c466f 49
Soohwan Kim 0:6f28332c466f 50 return 0;
Soohwan Kim 0:6f28332c466f 51 }
Soohwan Kim 0:6f28332c466f 52
Soohwan Kim 0:6f28332c466f 53 bool TCPSocketConnection::is_connected(void)
Soohwan Kim 0:6f28332c466f 54 {
Soohwan Kim 0:6f28332c466f 55 // force update recent state.
Soohwan Kim 0:6f28332c466f 56 _is_connected = eth->is_connected(_sock_fd);
Soohwan Kim 0:6f28332c466f 57 return _is_connected;
Soohwan Kim 0:6f28332c466f 58 }
Soohwan Kim 0:6f28332c466f 59
Soohwan Kim 0:6f28332c466f 60 int TCPSocketConnection::send(char* data, int length)
Soohwan Kim 0:6f28332c466f 61 {
Soohwan Kim 0:6f28332c466f 62 if((_sock_fd<0) || !(eth->is_connected(_sock_fd)))
Soohwan Kim 0:6f28332c466f 63 return -1;
Soohwan Kim 0:6f28332c466f 64
Soohwan Kim 0:6f28332c466f 65 int size = eth->wait_writeable(_sock_fd, _blocking ? -1 : _timeout);
Soohwan Kim 0:6f28332c466f 66 if (size < 0)
Soohwan Kim 0:6f28332c466f 67 return -1;
Soohwan Kim 0:6f28332c466f 68
Soohwan Kim 0:6f28332c466f 69 if (size > length)
Soohwan Kim 0:6f28332c466f 70 size = length;
Soohwan Kim 0:6f28332c466f 71
Soohwan Kim 0:6f28332c466f 72 return eth->send(_sock_fd, data, size);
Soohwan Kim 0:6f28332c466f 73 }
Soohwan Kim 0:6f28332c466f 74
Soohwan Kim 0:6f28332c466f 75 // -1 if unsuccessful, else number of bytes written
Soohwan Kim 0:6f28332c466f 76 int TCPSocketConnection::send_all(char* data, int length)
Soohwan Kim 0:6f28332c466f 77 {
Soohwan Kim 0:6f28332c466f 78 int writtenLen = 0;
Soohwan Kim 0:6f28332c466f 79
Soohwan Kim 0:6f28332c466f 80 if(_sock_fd<0)
Soohwan Kim 0:6f28332c466f 81 return -1;
Soohwan Kim 0:6f28332c466f 82
Soohwan Kim 0:6f28332c466f 83 while (writtenLen < length) {
Soohwan Kim 0:6f28332c466f 84
Soohwan Kim 0:6f28332c466f 85 if(!(eth->is_connected(_sock_fd)))
Soohwan Kim 0:6f28332c466f 86 return -1;
Soohwan Kim 0:6f28332c466f 87
Soohwan Kim 0:6f28332c466f 88 int size = eth->wait_writeable(_sock_fd, _blocking ? -1 : _timeout);
Soohwan Kim 0:6f28332c466f 89 if (size < 0) {
Soohwan Kim 0:6f28332c466f 90 return -1;
Soohwan Kim 0:6f28332c466f 91 }
Soohwan Kim 0:6f28332c466f 92 if (size > (length-writtenLen)) {
Soohwan Kim 0:6f28332c466f 93 size = (length-writtenLen);
Soohwan Kim 0:6f28332c466f 94 }
Soohwan Kim 0:6f28332c466f 95 int ret = eth->send(_sock_fd, data + writtenLen, size);
Soohwan Kim 0:6f28332c466f 96 if (ret < 0) {
Soohwan Kim 0:6f28332c466f 97 return -1;
Soohwan Kim 0:6f28332c466f 98 }
Soohwan Kim 0:6f28332c466f 99 writtenLen += ret;
Soohwan Kim 0:6f28332c466f 100 }
Soohwan Kim 0:6f28332c466f 101 return writtenLen;
Soohwan Kim 0:6f28332c466f 102 }
Soohwan Kim 0:6f28332c466f 103
Soohwan Kim 0:6f28332c466f 104 // -1 if unsuccessful, else number of bytes received
Soohwan Kim 0:6f28332c466f 105 int TCPSocketConnection::receive(char* data, int length)
Soohwan Kim 0:6f28332c466f 106 {
Soohwan Kim 0:6f28332c466f 107 if((_sock_fd<0) || !(eth->is_connected(_sock_fd)))
Soohwan Kim 0:6f28332c466f 108 return -1;
Soohwan Kim 0:6f28332c466f 109
Soohwan Kim 0:6f28332c466f 110 int size = eth->wait_readable(_sock_fd, _blocking ? -1 : _timeout);
Soohwan Kim 0:6f28332c466f 111 if (size < 0) {
Soohwan Kim 0:6f28332c466f 112 return -1;
Soohwan Kim 0:6f28332c466f 113 }
Soohwan Kim 0:6f28332c466f 114 if (size > length) {
Soohwan Kim 0:6f28332c466f 115 size = length;
Soohwan Kim 0:6f28332c466f 116 }
Soohwan Kim 0:6f28332c466f 117 return eth->recv(_sock_fd, data, size);
Soohwan Kim 0:6f28332c466f 118 }
Soohwan Kim 0:6f28332c466f 119
Soohwan Kim 0:6f28332c466f 120 // -1 if unsuccessful, else number of bytes received
Soohwan Kim 0:6f28332c466f 121 int TCPSocketConnection::receive_all(char* data, int length)
Soohwan Kim 0:6f28332c466f 122 {
Soohwan Kim 0:6f28332c466f 123 if(_sock_fd<0)
Soohwan Kim 0:6f28332c466f 124 return -1;
Soohwan Kim 0:6f28332c466f 125
Soohwan Kim 0:6f28332c466f 126 int readLen = 0;
Soohwan Kim 0:6f28332c466f 127 while (readLen < length) {
Soohwan Kim 0:6f28332c466f 128
Soohwan Kim 0:6f28332c466f 129 if(!(eth->is_connected(_sock_fd)))
Soohwan Kim 0:6f28332c466f 130 return -1;
Soohwan Kim 0:6f28332c466f 131
Soohwan Kim 0:6f28332c466f 132 int size = eth->wait_readable(_sock_fd, _blocking ? -1 :_timeout);
Soohwan Kim 0:6f28332c466f 133 if (size <= 0) {
Soohwan Kim 0:6f28332c466f 134 break;
Soohwan Kim 0:6f28332c466f 135 }
Soohwan Kim 0:6f28332c466f 136 if (size > (length - readLen)) {
Soohwan Kim 0:6f28332c466f 137 size = length - readLen;
Soohwan Kim 0:6f28332c466f 138 }
Soohwan Kim 0:6f28332c466f 139 int ret = eth->recv(_sock_fd, data + readLen, size);
Soohwan Kim 0:6f28332c466f 140 if (ret < 0) {
Soohwan Kim 0:6f28332c466f 141 return -1;
Soohwan Kim 0:6f28332c466f 142 }
Soohwan Kim 0:6f28332c466f 143 readLen += ret;
Soohwan Kim 0:6f28332c466f 144 }
Soohwan Kim 0:6f28332c466f 145 return readLen;
Soohwan Kim 0:6f28332c466f 146 }