134 lines
3.9 KiB
C++
134 lines
3.9 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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TCPSocketConnection::TCPSocketConnection() :
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_is_connected(false) {
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}
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int TCPSocketConnection::connect(const char* host, const int port) {
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if (init_socket(SOCK_STREAM) < 0)
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return -1;
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if (set_address(host, port) != 0)
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return -1;
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if (lwip_connect(_sock_fd, (const struct sockaddr *) &_remoteHost, sizeof(_remoteHost)) < 0) {
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close();
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return -1;
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}
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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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return _is_connected;
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}
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int TCPSocketConnection::send(char* data, int length) {
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if ((_sock_fd < 0) || !_is_connected)
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return -1;
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if (!_blocking) {
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TimeInterval timeout(_timeout);
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if (wait_writable(timeout) != 0)
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return -1;
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}
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int n = lwip_send(_sock_fd, data, length, 0);
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_is_connected = (n != 0);
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return n;
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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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if ((_sock_fd < 0) || !_is_connected)
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return -1;
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int writtenLen = 0;
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TimeInterval timeout(_timeout);
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while (writtenLen < length) {
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if (!_blocking) {
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// Wait for socket to be writeable
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if (wait_writable(timeout) != 0)
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return writtenLen;
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}
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int ret = lwip_send(_sock_fd, data + writtenLen, length - writtenLen, 0);
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if (ret > 0) {
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writtenLen += ret;
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continue;
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} else if (ret == 0) {
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_is_connected = false;
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return writtenLen;
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} else {
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return -1; //Connnection error
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}
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}
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return writtenLen;
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}
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int TCPSocketConnection::receive(char* data, int length) {
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if ((_sock_fd < 0) || !_is_connected)
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return -1;
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if (!_blocking) {
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TimeInterval timeout(_timeout);
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if (wait_readable(timeout) != 0)
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return -1;
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}
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int n = lwip_recv(_sock_fd, data, length, 0);
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_is_connected = (n != 0);
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return n;
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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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if ((_sock_fd < 0) || !_is_connected)
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return -1;
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int readLen = 0;
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TimeInterval timeout(_timeout);
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while (readLen < length) {
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if (!_blocking) {
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//Wait for socket to be readable
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if (wait_readable(timeout) != 0)
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return readLen;
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}
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int ret = lwip_recv(_sock_fd, data + readLen, length - readLen, 0);
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if (ret > 0) {
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readLen += ret;
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} else if (ret == 0) {
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_is_connected = false;
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return readLen;
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} else {
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return -1; //Connnection error
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}
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}
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return readLen;
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}
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