fort Socket
Fork of Socket by
TCPSocketConnection.cpp
- Committer:
- emilmont
- Date:
- 2012-07-27
- Revision:
- 6:cd2e5559786d
- Parent:
- 5:300e7ad2dc1d
- Child:
- 10:d24738f4ef99
File content as of revision 6:cd2e5559786d:
/* Copyright (C) 2012 mbed.org, MIT License * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software * and associated documentation files (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, publish, distribute, * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "TCPSocketConnection.h" #include <cstring> using std::memset; using std::memcpy; TCPSocketConnection::TCPSocketConnection() : _closedByRemoteHost(false) { } int TCPSocketConnection::connect(const char* host, const int port) { if (init_socket(SOCK_STREAM) < 0) return -1; if (set_address(host, port) != 0) return -1; if (lwip_connect(_sock_fd, (const struct sockaddr *) &_remoteHost, sizeof(_remoteHost)) < 0) { close(); return -1; } return 0; } int TCPSocketConnection::send(char* data, int length, int timeout_ms) { if ((_sock_fd < 0) || _closedByRemoteHost) return -1; TimeInterval timeout(timeout_ms); if (wait_writable(timeout) != 0) return -1; int n = lwip_send(_sock_fd, data, length, 0); _closedByRemoteHost = (n == 0); return n; } // -1 if unsuccessful, else number of bytes written int TCPSocketConnection::send_all(char* data, int length, int timeout_ms) { if ((_sock_fd < 0) || _closedByRemoteHost) return -1; size_t writtenLen = 0; TimeInterval timeout(timeout_ms); while (writtenLen < length) { // Wait for socket to be writeable if (wait_writable(timeout) != 0) return writtenLen; //Timeout -- FIXME should we return -1 or writtenLength ? int ret = lwip_send(_sock_fd, data + writtenLen, length - writtenLen, 0); if (ret > 0) { writtenLen += ret; continue; } else if (ret == 0) { _closedByRemoteHost = true; return writtenLen; //Connection was closed by remote host -- FIXME how do we signal that the connection was closed ? } else { return -1; //Connnection error } } return writtenLen; } int TCPSocketConnection::receive(char* data, int length, int timeout_ms) { if ((_sock_fd < 0) || _closedByRemoteHost) return -1; TimeInterval timeout(timeout_ms); if (wait_readable(timeout) != 0) return -1; int n = lwip_recv(_sock_fd, data, length, 0); _closedByRemoteHost = (n == 0); return n; } // -1 if unsuccessful, else number of bytes received int TCPSocketConnection::receive_all(char* data, int length, int timeout_ms) { if ((_sock_fd < 0) || _closedByRemoteHost) return -1; size_t readLen = 0; TimeInterval timeout(timeout_ms); while (readLen < length) { //Wait for socket to be readable if (wait_readable(timeout) != 0) return readLen; //Timeout -- FIXME should we return -1 or writtenLength ? int ret = lwip_recv(_sock_fd, data + readLen, length - readLen, 0); if (ret > 0) { readLen += ret; } else if (ret == 0) { _closedByRemoteHost = true; return readLen; //Connection was closed by remote host -- FIXME how do we signal that the connection was closed ? } else { return -1; //Connnection error } } return readLen; } TCPSocketConnection::~TCPSocketConnection() { close(); //Don't want to leak }