mbed official / Socket

mbed socket API

Dependents:   EthernetInterface EthernetInterface_RSF EthernetInterface EthernetInterface ... more

Deprecated

This is an mbed 2 sockets library. For mbed 5, network sockets have been revised to better support additional network stacks and thread safety here.

TCPSocketConnection.cpp@19:434906b5b977, 2013-08-19 (annotated)

Committer:
bogdanm
Date:
Mon Aug 19 18:38:18 2013 +0300
Revision:
19:434906b5b977
Parent:
11:3d83c348fb8b 
Sync with official mbed library release 66

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 3:e6474399e057 1 /* Copyright (C) 2012 mbed.org, MIT License
emilmont 3:e6474399e057 2 *
emilmont 3:e6474399e057 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
emilmont 3:e6474399e057 4 * and associated documentation files (the "Software"), to deal in the Software without restriction,
emilmont 3:e6474399e057 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
emilmont 3:e6474399e057 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
emilmont 3:e6474399e057 7 * furnished to do so, subject to the following conditions:
emilmont 3:e6474399e057 8 *
emilmont 3:e6474399e057 9 * The above copyright notice and this permission notice shall be included in all copies or
emilmont 3:e6474399e057 10 * substantial portions of the Software.
emilmont 3:e6474399e057 11 *
emilmont 3:e6474399e057 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
emilmont 3:e6474399e057 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
emilmont 3:e6474399e057 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
emilmont 3:e6474399e057 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
emilmont 3:e6474399e057 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
emilmont 3:e6474399e057 17 */
emilmont 3:e6474399e057 18 #include "TCPSocketConnection.h"
emilmont 3:e6474399e057 19 #include <cstring>
emilmont 3:e6474399e057 20
emilmont 3:e6474399e057 21 using std::memset;
emilmont 3:e6474399e057 22 using std::memcpy;
emilmont 3:e6474399e057 23
emilmont 3:e6474399e057 24 TCPSocketConnection::TCPSocketConnection() :
emilmont 11:3d83c348fb8b 25 _is_connected(false) {
emilmont 3:e6474399e057 26 }
emilmont 3:e6474399e057 27
emilmont 4:75988d748e4d 28 int TCPSocketConnection::connect(const char* host, const int port) {
emilmont 5:300e7ad2dc1d 29 if (init_socket(SOCK_STREAM) < 0)
emilmont 3:e6474399e057 30 return -1;
emilmont 3:e6474399e057 31
emilmont 5:300e7ad2dc1d 32 if (set_address(host, port) != 0)
emilmont 5:300e7ad2dc1d 33 return -1;
emilmont 3:e6474399e057 34
emilmont 3:e6474399e057 35 if (lwip_connect(_sock_fd, (const struct sockaddr *) &_remoteHost, sizeof(_remoteHost)) < 0) {
emilmont 3:e6474399e057 36 close();
emilmont 3:e6474399e057 37 return -1;
emilmont 3:e6474399e057 38 }
emilmont 11:3d83c348fb8b 39 _is_connected = true;
emilmont 3:e6474399e057 40
emilmont 3:e6474399e057 41 return 0;
emilmont 3:e6474399e057 42 }
emilmont 3:e6474399e057 43
emilmont 11:3d83c348fb8b 44 bool TCPSocketConnection::is_connected(void) {
emilmont 11:3d83c348fb8b 45 return _is_connected;
emilmont 11:3d83c348fb8b 46 }
emilmont 11:3d83c348fb8b 47
emilmont 10:d24738f4ef99 48 int TCPSocketConnection::send(char* data, int length) {
emilmont 11:3d83c348fb8b 49 if ((_sock_fd < 0) || !_is_connected)
emilmont 3:e6474399e057 50 return -1;
emilmont 3:e6474399e057 51
emilmont 10:d24738f4ef99 52 if (!_blocking) {
emilmont 10:d24738f4ef99 53 TimeInterval timeout(_timeout);
emilmont 10:d24738f4ef99 54 if (wait_writable(timeout) != 0)
emilmont 10:d24738f4ef99 55 return -1;
emilmont 10:d24738f4ef99 56 }
emilmont 3:e6474399e057 57
emilmont 3:e6474399e057 58 int n = lwip_send(_sock_fd, data, length, 0);
emilmont 11:3d83c348fb8b 59 _is_connected = (n != 0);
emilmont 3:e6474399e057 60
emilmont 3:e6474399e057 61 return n;
emilmont 3:e6474399e057 62 }
emilmont 3:e6474399e057 63
emilmont 3:e6474399e057 64 // -1 if unsuccessful, else number of bytes written
emilmont 10:d24738f4ef99 65 int TCPSocketConnection::send_all(char* data, int length) {
emilmont 11:3d83c348fb8b 66 if ((_sock_fd < 0) || !_is_connected)
emilmont 3:e6474399e057 67 return -1;
emilmont 3:e6474399e057 68
bogdanm 19:434906b5b977 69 int writtenLen = 0;
emilmont 10:d24738f4ef99 70 TimeInterval timeout(_timeout);
emilmont 3:e6474399e057 71 while (writtenLen < length) {
emilmont 10:d24738f4ef99 72 if (!_blocking) {
emilmont 10:d24738f4ef99 73 // Wait for socket to be writeable
emilmont 10:d24738f4ef99 74 if (wait_writable(timeout) != 0)
emilmont 11:3d83c348fb8b 75 return writtenLen;
emilmont 10:d24738f4ef99 76 }
emilmont 3:e6474399e057 77
emilmont 3:e6474399e057 78 int ret = lwip_send(_sock_fd, data + writtenLen, length - writtenLen, 0);
emilmont 3:e6474399e057 79 if (ret > 0) {
emilmont 3:e6474399e057 80 writtenLen += ret;
emilmont 3:e6474399e057 81 continue;
emilmont 3:e6474399e057 82 } else if (ret == 0) {
emilmont 11:3d83c348fb8b 83 _is_connected = false;
emilmont 11:3d83c348fb8b 84 return writtenLen;
emilmont 3:e6474399e057 85 } else {
emilmont 3:e6474399e057 86 return -1; //Connnection error
emilmont 3:e6474399e057 87 }
emilmont 3:e6474399e057 88 }
emilmont 3:e6474399e057 89 return writtenLen;
emilmont 3:e6474399e057 90 }
emilmont 3:e6474399e057 91
emilmont 10:d24738f4ef99 92 int TCPSocketConnection::receive(char* data, int length) {
emilmont 11:3d83c348fb8b 93 if ((_sock_fd < 0) || !_is_connected)
emilmont 3:e6474399e057 94 return -1;
emilmont 3:e6474399e057 95
emilmont 10:d24738f4ef99 96 if (!_blocking) {
emilmont 10:d24738f4ef99 97 TimeInterval timeout(_timeout);
emilmont 10:d24738f4ef99 98 if (wait_readable(timeout) != 0)
emilmont 10:d24738f4ef99 99 return -1;
emilmont 10:d24738f4ef99 100 }
emilmont 3:e6474399e057 101
emilmont 3:e6474399e057 102 int n = lwip_recv(_sock_fd, data, length, 0);
emilmont 11:3d83c348fb8b 103 _is_connected = (n != 0);
emilmont 3:e6474399e057 104
emilmont 3:e6474399e057 105 return n;
emilmont 3:e6474399e057 106 }
emilmont 3:e6474399e057 107
emilmont 3:e6474399e057 108 // -1 if unsuccessful, else number of bytes received
emilmont 10:d24738f4ef99 109 int TCPSocketConnection::receive_all(char* data, int length) {
emilmont 11:3d83c348fb8b 110 if ((_sock_fd < 0) || !_is_connected)
emilmont 3:e6474399e057 111 return -1;
emilmont 3:e6474399e057 112
bogdanm 19:434906b5b977 113 int readLen = 0;
emilmont 10:d24738f4ef99 114 TimeInterval timeout(_timeout);
emilmont 3:e6474399e057 115 while (readLen < length) {
emilmont 10:d24738f4ef99 116 if (!_blocking) {
emilmont 10:d24738f4ef99 117 //Wait for socket to be readable
emilmont 10:d24738f4ef99 118 if (wait_readable(timeout) != 0)
emilmont 11:3d83c348fb8b 119 return readLen;
emilmont 10:d24738f4ef99 120 }
emilmont 3:e6474399e057 121
emilmont 3:e6474399e057 122 int ret = lwip_recv(_sock_fd, data + readLen, length - readLen, 0);
emilmont 3:e6474399e057 123 if (ret > 0) {
emilmont 3:e6474399e057 124 readLen += ret;
emilmont 3:e6474399e057 125 } else if (ret == 0) {
emilmont 11:3d83c348fb8b 126 _is_connected = false;
emilmont 11:3d83c348fb8b 127 return readLen;
emilmont 3:e6474399e057 128 } else {
emilmont 3:e6474399e057 129 return -1; //Connnection error
emilmont 3:e6474399e057 130 }
emilmont 3:e6474399e057 131 }
emilmont 3:e6474399e057 132 return readLen;
emilmont 3:e6474399e057 133 }