Simple websocket client based on the original with a few added features such as: - setBaud() - set the baud rate for the communication - Initialize() - mimics the constructor - chaged read() to readmsg() to avoid confusion with other functions
Dependents: IoT_Ex BatteryModelTester BatteryModelTester
Fork of WebSocketClient by
Websocket.h
- Committer:
- samux
- Date:
- 2012-08-10
- Revision:
- 0:10b6eaafc2da
- Child:
- 3:9589afa4712e
File content as of revision 0:10b6eaafc2da:
/** * @author Samuel Mokrani * * @section LICENSE * * Copyright (c) 2011 mbed * * 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. * * @section DESCRIPTION * Simple websocket client * */ #ifndef WEBSOCKET_H #define WEBSOCKET_H #include "mbed.h" #include <string> #include "TCPSocketConnection.h" /** Websocket client Class. * * Example (ethernet network): * @code * #include "mbed.h" * #include "EthernetInterface.h" * #include "Websocket.h" * * int main() { * EthernetInterface eth; * eth.init(); //Use DHCP * eth.connect(); * printf("IP Address is %s\n\r", eth.getIPAddress()); * * Websocket ws("ws://sockets.mbed.org:443/ws/demo/rw"); * ws.connect(); * * while (1) { * int res = ws.send("WebSocket Hello World!"); * * if (ws.read(recv)) { * printf("rcv: %s\r\n", recv); * } * * wait(0.1); * } * } * @endcode */ class Websocket { public: /** * Constructor * * @param url The Websocket url in the form "ws://ip_domain[:port]/path" (by default: port = 80) */ Websocket(char * url); /** * Connect to the websocket url * *@return true if the connection is established, false otherwise */ bool connect(); /** * Send a string according to the websocket format (see rfc 6455) * * @param str string to be sent * * @returns the number of bytes sent */ int send(char * str); /** * Read a websocket message * * @param message pointer to the string to be read (null if drop frame) * * @return true if a websocket frame has been read */ bool read(char * message); /** * To see if there is a websocket connection active * * @return true if there is a connection active */ bool is_connected(); /** * Close the websocket connection * * @return true if the connection has been closed, false otherwise */ bool close(); /* * Accessor: get path from the websocket url * * @return path */ std::string getPath(); private: void fillFields(char * url); int sendOpcode(uint8_t opcode); int sendLength(uint32_t len); int sendMask(); int sendChar(char c); int readChar(char * pC, bool block = true); std::string ip_domain; std::string path; std::string port; TCPSocketConnection socket; int read(char * buf, int len, bool block = true); int write(char * buf, int len, uint32_t timeout=5000); }; #endif