Jordan Hanson / Mbed 2 deprecated AutonomousDAQ

Arianna autonomous DAQ firmware

Dependencies:   mbed SDFileSystemFilinfo AriSnProtocol NetServicesMin AriSnComm MODSERIAL PowerControlClkPatch DS1820OW

Websocket.h@110:d1da040a0cf2, 2015-11-24 (annotated)

Committer:
uci1
Date:
Tue Nov 24 21:52:27 2015 +0000
Revision:
110:d1da040a0cf2
Parent:
6:6f002d202f59 
Stn32 (slow) with conf name. SD stall fix. No interface chip. Safety nets.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
uci1 0:664899e0b988 1 /**
uci1 0:664899e0b988 2 * @author Samuel Mokrani
uci1 0:664899e0b988 3 *
uci1 0:664899e0b988 4 * @section LICENSE
uci1 0:664899e0b988 5 *
uci1 0:664899e0b988 6 * Copyright (c) 2011 mbed
uci1 0:664899e0b988 7 *
uci1 0:664899e0b988 8 * Permission is hereby granted, free of charge, to any person obtaining a copy
uci1 0:664899e0b988 9 * of this software and associated documentation files (the "Software"), to deal
uci1 0:664899e0b988 10 * in the Software without restriction, including without limitation the rights
uci1 0:664899e0b988 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
uci1 0:664899e0b988 12 * copies of the Software, and to permit persons to whom the Software is
uci1 0:664899e0b988 13 * furnished to do so, subject to the following conditions:
uci1 0:664899e0b988 14 *
uci1 0:664899e0b988 15 * The above copyright notice and this permission notice shall be included in
uci1 0:664899e0b988 16 * all copies or substantial portions of the Software.
uci1 0:664899e0b988 17 *
uci1 0:664899e0b988 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
uci1 0:664899e0b988 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
uci1 0:664899e0b988 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
uci1 0:664899e0b988 21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
uci1 0:664899e0b988 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
uci1 0:664899e0b988 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
uci1 0:664899e0b988 24 * THE SOFTWARE.
uci1 0:664899e0b988 25 *
uci1 0:664899e0b988 26 * @section DESCRIPTION
uci1 0:664899e0b988 27 * Simple websocket client
uci1 0:664899e0b988 28 *
uci1 0:664899e0b988 29 */
uci1 0:664899e0b988 30
uci1 0:664899e0b988 31 #ifndef WEBSOCKET_H
uci1 0:664899e0b988 32 #define WEBSOCKET_H
uci1 0:664899e0b988 33
uci1 6:6f002d202f59 34 #ifdef IGNORE_THIS_FILE
uci1 6:6f002d202f59 35
uci1 0:664899e0b988 36 #include "mbed.h"
uci1 0:664899e0b988 37 //#include "Wifly.h"
uci1 0:664899e0b988 38 #include <string>
uci1 0:664899e0b988 39
uci1 0:664899e0b988 40
uci1 0:664899e0b988 41 #ifdef TARGET_LPC1768
uci1 0:664899e0b988 42 #include "EthernetNetIf.h"
uci1 0:664899e0b988 43 #include "TCPSocket.h"
uci1 0:664899e0b988 44 #include "dnsresolve.h"
uci1 0:664899e0b988 45 #endif //target
uci1 0:664899e0b988 46
uci1 3:24c5f0f50bf1 47 #define RX_BUF_SIZE 1024
uci1 3:24c5f0f50bf1 48 #define RX_RECV_BYTES 512
uci1 0:664899e0b988 49
uci1 0:664899e0b988 50 /** Websocket client Class.
uci1 0:664899e0b988 51 *
uci1 0:664899e0b988 52 * Warning: you must use a wifi module (Wifly RN131-C) or an ethernet network to use this class
uci1 0:664899e0b988 53 *
uci1 0:664899e0b988 54 * Example (wifi network):
uci1 0:664899e0b988 55 * @code
uci1 0:664899e0b988 56 * #include "mbed.h"
uci1 0:664899e0b988 57 * #include "Wifly.h"
uci1 0:664899e0b988 58 * #include "Websocket.h"
uci1 0:664899e0b988 59 *
uci1 0:664899e0b988 60 * DigitalOut l1(LED1);
uci1 0:664899e0b988 61 *
uci1 0:664899e0b988 62 * //Here, we create an instance, with pins 9 and 10 connecting to the
uci1 0:664899e0b988 63 * //WiFly's TX and RX pins, and pin 21 to RESET. We are connecting to the
uci1 0:664899e0b988 64 * //"mbed" network, password "password", and we are using WPA.
uci1 0:664899e0b988 65 * Wifly wifly(p9, p10, p21, "mbed", "password", true);
uci1 0:664899e0b988 66 *
uci1 0:664899e0b988 67 * //Here, we create a Websocket instance in 'wo' (write-only) mode
uci1 0:664899e0b988 68 * //on the 'samux' channel
uci1 0:664899e0b988 69 * Websocket ws("ws://sockets.mbed.org/ws/samux/wo", &wifly);
uci1 0:664899e0b988 70 *
uci1 0:664899e0b988 71 *
uci1 0:664899e0b988 72 * int main() {
uci1 0:664899e0b988 73 * while (1) {
uci1 0:664899e0b988 74 *
uci1 0:664899e0b988 75 * //we connect the network
uci1 0:664899e0b988 76 * while (!wifly.join()) {
uci1 0:664899e0b988 77 * wifly.reset();
uci1 0:664899e0b988 78 * }
uci1 0:664899e0b988 79 *
uci1 0:664899e0b988 80 * //we connect to the websocket server
uci1 0:664899e0b988 81 * while (!ws.connect());
uci1 0:664899e0b988 82 *
uci1 0:664899e0b988 83 * while (1) {
uci1 0:664899e0b988 84 * wait(0.5);
uci1 0:664899e0b988 85 *
uci1 0:664899e0b988 86 * //Send Hello world
uci1 0:664899e0b988 87 * ws.send("Hello World! over Wifi");
uci1 0:664899e0b988 88 *
uci1 0:664899e0b988 89 * // show that we are alive
uci1 0:664899e0b988 90 * l1 = !l1;
uci1 0:664899e0b988 91 * }
uci1 0:664899e0b988 92 * }
uci1 0:664899e0b988 93 * }
uci1 0:664899e0b988 94 * @endcode
uci1 0:664899e0b988 95 *
uci1 0:664899e0b988 96 *
uci1 0:664899e0b988 97 *
uci1 0:664899e0b988 98 * Example (ethernet network):
uci1 0:664899e0b988 99 * @code
uci1 0:664899e0b988 100 * #include "mbed.h"
uci1 0:664899e0b988 101 * #include "Websocket.h"
uci1 0:664899e0b988 102 *
uci1 0:664899e0b988 103 * Timer tmr;
uci1 0:664899e0b988 104 *
uci1 0:664899e0b988 105 * //Here, we create a Websocket instance in 'wo' (write-only) mode
uci1 0:664899e0b988 106 * //on the 'samux' channel
uci1 0:664899e0b988 107 * Websocket ws("ws://sockets.mbed.org/ws/samux/wo");
uci1 0:664899e0b988 108 *
uci1 0:664899e0b988 109 * int main() {
uci1 0:664899e0b988 110 * while (1) {
uci1 0:664899e0b988 111 *
uci1 0:664899e0b988 112 * while (!ws.connect());
uci1 0:664899e0b988 113 *
uci1 0:664899e0b988 114 * tmr.start();
uci1 0:664899e0b988 115 * while (1) {
uci1 0:664899e0b988 116 * if (tmr.read() > 0.5) {
uci1 0:664899e0b988 117 * ws.send("Hello World! over Ethernet");
uci1 0:664899e0b988 118 * tmr.start();
uci1 0:664899e0b988 119 * }
uci1 0:664899e0b988 120 * Net::poll();
uci1 0:664899e0b988 121 * }
uci1 0:664899e0b988 122 * }
uci1 0:664899e0b988 123 * }
uci1 0:664899e0b988 124 * @endcode
uci1 0:664899e0b988 125 */
uci1 0:664899e0b988 126 class Websocket
uci1 0:664899e0b988 127 {
uci1 0:664899e0b988 128 public:
uci1 0:664899e0b988 129 /**
uci1 0:664899e0b988 130 * Constructor
uci1 0:664899e0b988 131 *
uci1 0:664899e0b988 132 * @param url The Websocket url in the form "ws://ip_domain[:port]/path" (by default: port = 80)
uci1 0:664899e0b988 133 * @param wifi pointer to a wifi module (the communication will be establish by this module)
uci1 0:664899e0b988 134 */
uci1 0:664899e0b988 135 // Websocket(char * url, Wifly * wifi);
uci1 0:664899e0b988 136
uci1 0:664899e0b988 137 #ifdef TARGET_LPC1768
uci1 0:664899e0b988 138 /**
uci1 0:664899e0b988 139 * Constructor for an ethernet communication
uci1 0:664899e0b988 140 *
uci1 0:664899e0b988 141 * @param url The Websocket url in the form "ws://ip_domain[:port]/path" (by default: port = 80)
uci1 0:664899e0b988 142 */
uci1 0:664899e0b988 143 Websocket(char * url);
uci1 0:664899e0b988 144 #endif //target
uci1 0:664899e0b988 145
uci1 0:664899e0b988 146 /**
uci1 0:664899e0b988 147 * Connect to the websocket url
uci1 0:664899e0b988 148 *
uci1 0:664899e0b988 149 *@return true if the connection is established, false otherwise
uci1 0:664899e0b988 150 */
uci1 3:24c5f0f50bf1 151 bool connect(const uint32_t timeout);
uci1 0:664899e0b988 152
uci1 0:664899e0b988 153 /**
uci1 0:664899e0b988 154 * Send a string according to the websocket format
uci1 0:664899e0b988 155 *
uci1 0:664899e0b988 156 * @param str string to be sent
uci1 0:664899e0b988 157 */
uci1 3:24c5f0f50bf1 158 void send(const char * str);
uci1 0:664899e0b988 159
uci1 0:664899e0b988 160 // CJR: add ones for binary data
uci1 3:24c5f0f50bf1 161 bool sendBinary(const char* str, const uint32_t len, char* const bbuf);
uci1 3:24c5f0f50bf1 162 bool sendBinary(const char* hbuf, const uint32_t hlen, FILE* f, const uint32_t nbytes,
uci1 3:24c5f0f50bf1 163 char* const bbuf);
uci1 0:664899e0b988 164
uci1 0:664899e0b988 165 /**
uci1 0:664899e0b988 166 * Read a websocket message
uci1 0:664899e0b988 167 *
uci1 0:664899e0b988 168 * @param message pointer to the string to be read (null if drop frame)
uci1 0:664899e0b988 169 *
uci1 0:664899e0b988 170 * @return true if a string has been read, false otherwise
uci1 0:664899e0b988 171 */
uci1 3:24c5f0f50bf1 172 bool read(char * message, uint32_t& len_msg, const uint32_t maxlen,
uci1 3:24c5f0f50bf1 173 const uint32_t timeout,
uci1 3:24c5f0f50bf1 174 char* const bbuf, const uint32_t bbsize);
uci1 0:664899e0b988 175
uci1 0:664899e0b988 176 /**
uci1 0:664899e0b988 177 * To see if there is a websocket connection active
uci1 0:664899e0b988 178 *
uci1 0:664899e0b988 179 * @return true if there is a connection active
uci1 0:664899e0b988 180 */
uci1 0:664899e0b988 181 bool connected();
uci1 0:664899e0b988 182
uci1 0:664899e0b988 183 /**
uci1 0:664899e0b988 184 * Close the websocket connection
uci1 0:664899e0b988 185 *
uci1 0:664899e0b988 186 * @return true if the connection has been closed, false otherwise
uci1 0:664899e0b988 187 */
uci1 0:664899e0b988 188 bool close();
uci1 0:664899e0b988 189
uci1 0:664899e0b988 190 /**
uci1 0:664899e0b988 191 * Accessor: get path from the websocket url
uci1 0:664899e0b988 192 *
uci1 0:664899e0b988 193 * @return path
uci1 0:664899e0b988 194 */
uci1 0:664899e0b988 195 std::string getPath();
uci1 0:664899e0b988 196
uci1 0:664899e0b988 197 enum Type {
uci1 0:664899e0b988 198 WIF,
uci1 0:664899e0b988 199 ETH
uci1 0:664899e0b988 200 };
uci1 0:664899e0b988 201
uci1 0:664899e0b988 202
uci1 0:664899e0b988 203 private:
uci1 0:664899e0b988 204
uci1 3:24c5f0f50bf1 205 bool sendBinaryDirect(const char* str, const uint32_t len);
uci1 3:24c5f0f50bf1 206 bool sendBinaryDirect(const char* hbuf, const uint32_t hlen, FILE* f, const uint32_t nbytes);
uci1 3:24c5f0f50bf1 207 bool sendBinaryB64txt(const char* str, const uint32_t len, char* const bbuf);
uci1 3:24c5f0f50bf1 208 bool sendBinaryB64txt(const char* hbuf, const uint32_t hlen, FILE* f, const uint32_t nbytes,
uci1 3:24c5f0f50bf1 209 char* const bbuf);
uci1 3:24c5f0f50bf1 210
uci1 0:664899e0b988 211 void fillFields(char * url);
uci1 0:664899e0b988 212 void sendOpcode(uint8_t opcode);
uci1 0:664899e0b988 213 void sendLength(uint32_t len);
uci1 0:664899e0b988 214 void sendMask();
uci1 0:664899e0b988 215 int sendChar(uint8_t c);
uci1 0:664899e0b988 216
uci1 0:664899e0b988 217 std::string ip_domain;
uci1 0:664899e0b988 218 std::string path;
uci1 0:664899e0b988 219 std::string port;
uci1 0:664899e0b988 220
uci1 0:664899e0b988 221 // Wifly * wifi;
uci1 0:664899e0b988 222
uci1 0:664899e0b988 223 #ifdef TARGET_LPC1768
uci1 0:664899e0b988 224 void onTCPSocketEvent(TCPSocketEvent e);
uci1 0:664899e0b988 225 bool eth_connected;
uci1 0:664899e0b988 226 bool eth_readable;
uci1 0:664899e0b988 227 bool eth_writeable;
uci1 3:24c5f0f50bf1 228 char eth_rx[RX_BUF_SIZE];
uci1 0:664899e0b988 229 bool response_server_eth;
uci1 0:664899e0b988 230 bool new_msg;
uci1 0:664899e0b988 231
uci1 0:664899e0b988 232 EthernetNetIf * eth;
uci1 0:664899e0b988 233 TCPSocket * sock;
uci1 0:664899e0b988 234 IpAddr * server_ip;
uci1 0:664899e0b988 235 #endif //target
uci1 0:664899e0b988 236
uci1 0:664899e0b988 237 Type netif;
uci1 3:24c5f0f50bf1 238
uci1 3:24c5f0f50bf1 239 static const bool kUseB64;
uci1 0:664899e0b988 240 };
uci1 0:664899e0b988 241
uci1 6:6f002d202f59 242 #endif
uci1 6:6f002d202f59 243
uci1 0:664899e0b988 244 #endif