private fork
Fork of GSwifiInterface by
Socket/UDPSocket.cpp
- Committer:
- gsfan
- Date:
- 2013-10-31
- Revision:
- 10:7d8134e7df01
- Parent:
- 8:64184a968e3b
- Child:
- 12:057089026a20
File content as of revision 10:7d8134e7df01:
/* 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. */ /* Copyright (C) 2013 gsfan, MIT License * port to the GainSpan Wi-FI module GS1011 */ #include "UDPSocket.h" #include <string> #include <algorithm> UDPSocket::UDPSocket() { endpoint_connected = false; } int UDPSocket::init(void) { _server = false; return 0; } // Server initialization int UDPSocket::bind(int port) { _port = port; _server = true; return 0; } // -1 if unsuccessful, else number of bytes written int UDPSocket::sendTo(Endpoint &remote, char *packet, int length) { Timer tmr; int idx = 0; if (_cid < 0 && _wifi->isConnected()) { // Socket open if (_server) { _cid = _wifi->listen(GSwifi::PROTO_UDP, _port); } else { _cid = _wifi->open(GSwifi::PROTO_UDP, remote.get_address(), remote.get_port(), _port); } if (_cid < 0) return -1; } tmr.start(); while ((tmr.read_ms() < _timeout) || _blocking) { if (_server) { idx += _wifi->sendto(_cid, packet, length, remote.get_address(), remote.get_port()); } else { idx += _wifi->send(_cid, packet, length); } if (idx < 0) { if (!_wifi->isConnected(_cid)) _cid = -1; } if (idx == length) return idx; } return (idx == 0) ? -1 : idx; } // -1 if unsuccessful, else number of bytes received int UDPSocket::receiveFrom(Endpoint &remote, char *buffer, int length) { Timer tmr; int idx = 0; int time = -1; char ip[16]; int port; if (_cid < 0 && _wifi->isConnected()) { // Socket open if (_server) { _cid = _wifi->listen(GSwifi::PROTO_UDP, _port); } else { _cid = _wifi->open(GSwifi::PROTO_UDP, remote.get_address(), remote.get_port(), _port); } if (_cid < 0) return -1; } if (_blocking) { tmr.start(); while (time < _timeout + 20) { if (_wifi->readable(_cid)) { break; } time = tmr.read_ms(); } if (time >= _timeout + 20) { return -1; } } tmr.reset(); time = -1; tmr.start(); while (time < _timeout) { if (_server) { idx += _wifi->recvfrom(_cid, &buffer[idx], length - idx, ip, &port); } else { idx += _wifi->recv(_cid, &buffer[idx], length - idx); } if (idx < 0) { if (!_wifi->isConnected(_cid)) _cid = -1; return -1; } if (idx == length) { break; } time = tmr.read_ms(); } if (_server) { remote.set_address(ip, port); } return (idx == 0) ? -1 : idx; }