140 lines
4.0 KiB
C++
140 lines
4.0 KiB
C++
/* Copyright (C) 2012 mbed.org, MIT License
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this software
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* and associated documentation files (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge, publish, distribute,
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* sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all copies or
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* substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
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* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include "TCPSocketConnection.h"
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#include <cstring>
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using std::memset;
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using std::memcpy;
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// not a big code.
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// refer from EthernetInterface by mbed official driver
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TCPSocketConnection::TCPSocketConnection() :
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_is_connected(false)
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{
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}
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int TCPSocketConnection::connect(const char* host, const int port)
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{
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if (_sock_fd < 0) {
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_sock_fd = eth->new_socket();
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if (_sock_fd < 0) {
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return -1;
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}
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}
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if (set_address(host, port) != 0) {
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return -1;
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}
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if (!eth->connect(_sock_fd, get_address(), port)) {
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return -1;
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}
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set_blocking(false);
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// add code refer from EthernetInterface.
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_is_connected = true;
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return 0;
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}
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bool TCPSocketConnection::is_connected(void)
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{
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// force update recent state.
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_is_connected = eth->is_connected(_sock_fd);
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return _is_connected;
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}
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bool TCPSocketConnection::is_fin_received(void)
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{
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return eth->is_fin_received(_sock_fd);
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}
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int TCPSocketConnection::send(char* data, int length)
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{
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// add to cover exception.
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if ((_sock_fd < 0) || !_is_connected)
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return -1;
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int size = eth->wait_writeable(_sock_fd, _blocking ? -1 : _timeout);
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if (size < 0) {
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return -1;
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}
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if (size > length) {
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size = length;
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}
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return eth->send(_sock_fd, data, size);
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}
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// -1 if unsuccessful, else number of bytes written
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int TCPSocketConnection::send_all(char* data, int length)
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{
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int writtenLen = 0;
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while (writtenLen < length) {
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int size = eth->wait_writeable(_sock_fd, _blocking ? -1 : _timeout);
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if (size < 0) {
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return -1;
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}
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if (size > (length-writtenLen)) {
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size = (length-writtenLen);
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}
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int ret = eth->send(_sock_fd, data + writtenLen, size);
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if (ret < 0) {
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return -1;
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}
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writtenLen += ret;
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}
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return writtenLen;
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}
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// -1 if unsuccessful, else number of bytes received
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int TCPSocketConnection::receive(char* data, int length)
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{
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// add to cover exception.
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if ((_sock_fd < 0) || !_is_connected)
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return -1;
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int size = eth->wait_readable(_sock_fd, _blocking ? -1 : _timeout);
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if (size < 0) {
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return -1;
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}
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if (size > length) {
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size = length;
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}
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return eth->recv(_sock_fd, data, size);
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}
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// -1 if unsuccessful, else number of bytes received
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int TCPSocketConnection::receive_all(char* data, int length)
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{
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int readLen = 0;
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while (readLen < length) {
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int size = eth->wait_readable(_sock_fd, _blocking ? -1 :_timeout);
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if (size <= 0) {
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break;
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}
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if (size > (length - readLen)) {
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size = length - readLen;
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}
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int ret = eth->recv(_sock_fd, data + readLen, size);
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if (ret < 0) {
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return -1;
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}
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readLen += ret;
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}
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return readLen;
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}
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