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.cpp@24:6f30d0c4ff7b, 2016-10-04 (annotated)
- Committer:
- defrost
- Date:
- Tue Oct 04 15:48:42 2016 +0000
- Revision:
- 24:6f30d0c4ff7b
- Parent:
- 23:0d7b33cd11f9
- Child:
- 25:4a98a3b83b87
- Turned off debug messages
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
samux | 3:9589afa4712e | 1 | #include "Websocket.h" |
samux | 3:9589afa4712e | 2 | |
samux | 7:4567996414a5 | 3 | #define MAX_TRY_WRITE 20 |
samux | 7:4567996414a5 | 4 | #define MAX_TRY_READ 10 |
samux | 3:9589afa4712e | 5 | |
defrost | 24:6f30d0c4ff7b | 6 | //#define DEBUG |
defrost | 20:ae675d49fa7f | 7 | #define WARNMESSAGES |
defrost | 20:ae675d49fa7f | 8 | #define ERRMESSAGES |
defrost | 15:9df4ffc6ce48 | 9 | #define INFOMESSAGES |
defrost | 20:ae675d49fa7f | 10 | |
defrost | 15:9df4ffc6ce48 | 11 | #ifdef DEBUG |
defrost | 20:ae675d49fa7f | 12 | #define DBG(x, ...) pc.printf("[WebSocket : DBG] "x"\r\n", ##__VA_ARGS__); |
defrost | 20:ae675d49fa7f | 13 | #else |
defrost | 20:ae675d49fa7f | 14 | #define DBG(x, ...) |
defrost | 20:ae675d49fa7f | 15 | #endif |
defrost | 20:ae675d49fa7f | 16 | |
defrost | 20:ae675d49fa7f | 17 | #ifdef WARNMESSAGES |
defrost | 15:9df4ffc6ce48 | 18 | #define WARN(x, ...) pc.printf("[WebSocket : WARN] "x"\r\n", ##__VA_ARGS__); |
defrost | 20:ae675d49fa7f | 19 | #else |
defrost | 20:ae675d49fa7f | 20 | #define WARN(x, ...) |
defrost | 20:ae675d49fa7f | 21 | #endif |
defrost | 20:ae675d49fa7f | 22 | |
defrost | 20:ae675d49fa7f | 23 | #ifdef ERRMESSAGES |
defrost | 15:9df4ffc6ce48 | 24 | #define ERR(x, ...) pc.printf("[WebSocket : ERR] "x"\r\n", ##__VA_ARGS__); |
samux | 3:9589afa4712e | 25 | #else |
samux | 3:9589afa4712e | 26 | #define ERR(x, ...) |
samux | 3:9589afa4712e | 27 | #endif |
samux | 3:9589afa4712e | 28 | |
defrost | 15:9df4ffc6ce48 | 29 | #ifdef INFOMESSAGES |
defrost | 15:9df4ffc6ce48 | 30 | #define INFO(x, ...) pc.printf("[WebSocket : INFO] "x"\r\n", ##__VA_ARGS__); |
defrost | 15:9df4ffc6ce48 | 31 | #else |
defrost | 15:9df4ffc6ce48 | 32 | #define INFO(x, ...) |
defrost | 15:9df4ffc6ce48 | 33 | #endif |
samux | 3:9589afa4712e | 34 | |
samux | 3:9589afa4712e | 35 | Websocket::Websocket(char * url) { |
samux | 3:9589afa4712e | 36 | fillFields(url); |
samux | 3:9589afa4712e | 37 | socket.set_blocking(false, 400); |
samux | 3:9589afa4712e | 38 | } |
samux | 3:9589afa4712e | 39 | |
defrost | 11:85bff70bab45 | 40 | Websocket::Websocket() { |
defrost | 11:85bff70bab45 | 41 | |
defrost | 11:85bff70bab45 | 42 | } |
defrost | 11:85bff70bab45 | 43 | |
defrost | 11:85bff70bab45 | 44 | void Websocket::Initialize(char * url){ |
defrost | 11:85bff70bab45 | 45 | fillFields(url); |
defrost | 11:85bff70bab45 | 46 | socket.set_blocking(false, 400); |
defrost | 11:85bff70bab45 | 47 | } |
defrost | 11:85bff70bab45 | 48 | |
defrost | 15:9df4ffc6ce48 | 49 | void Websocket::setBaud(int baudrate){ |
defrost | 15:9df4ffc6ce48 | 50 | socket.setBaud(baudrate); |
defrost | 21:420b83755885 | 51 | DBG("Baud Rate set to: %d", baudrate); |
defrost | 15:9df4ffc6ce48 | 52 | return; |
defrost | 15:9df4ffc6ce48 | 53 | } |
defrost | 15:9df4ffc6ce48 | 54 | |
samux | 3:9589afa4712e | 55 | void Websocket::fillFields(char * url) { |
donatien | 6:86e89a0369b9 | 56 | int ret = parseURL(url, scheme, sizeof(scheme), host, sizeof(host), &port, path, sizeof(path)); |
donatien | 6:86e89a0369b9 | 57 | if(ret) |
donatien | 6:86e89a0369b9 | 58 | { |
donatien | 6:86e89a0369b9 | 59 | ERR("URL parsing failed; please use: \"ws://ip-or-domain[:port]/path\""); |
donatien | 6:86e89a0369b9 | 60 | return; |
donatien | 6:86e89a0369b9 | 61 | } |
samux | 3:9589afa4712e | 62 | |
donatien | 6:86e89a0369b9 | 63 | if(port == 0) //TODO do handle WSS->443 |
donatien | 6:86e89a0369b9 | 64 | { |
donatien | 6:86e89a0369b9 | 65 | port = 80; |
donatien | 6:86e89a0369b9 | 66 | } |
donatien | 6:86e89a0369b9 | 67 | |
donatien | 6:86e89a0369b9 | 68 | if(strcmp(scheme, "ws")) |
donatien | 6:86e89a0369b9 | 69 | { |
donatien | 6:86e89a0369b9 | 70 | ERR("Wrong scheme, please use \"ws\" instead"); |
donatien | 6:86e89a0369b9 | 71 | } |
donatien | 6:86e89a0369b9 | 72 | } |
samux | 3:9589afa4712e | 73 | |
donatien | 6:86e89a0369b9 | 74 | int Websocket::parseURL(const char* url, char* scheme, size_t maxSchemeLen, char* host, size_t maxHostLen, uint16_t* port, char* path, size_t maxPathLen) //Parse URL |
donatien | 6:86e89a0369b9 | 75 | { |
donatien | 6:86e89a0369b9 | 76 | char* schemePtr = (char*) url; |
donatien | 6:86e89a0369b9 | 77 | char* hostPtr = (char*) strstr(url, "://"); |
donatien | 6:86e89a0369b9 | 78 | if(hostPtr == NULL) |
donatien | 6:86e89a0369b9 | 79 | { |
donatien | 6:86e89a0369b9 | 80 | WARN("Could not find host"); |
donatien | 6:86e89a0369b9 | 81 | return -1; //URL is invalid |
donatien | 6:86e89a0369b9 | 82 | } |
donatien | 6:86e89a0369b9 | 83 | |
donatien | 6:86e89a0369b9 | 84 | if( maxSchemeLen < hostPtr - schemePtr + 1 ) //including NULL-terminating char |
donatien | 6:86e89a0369b9 | 85 | { |
donatien | 6:86e89a0369b9 | 86 | WARN("Scheme str is too small (%d >= %d)", maxSchemeLen, hostPtr - schemePtr + 1); |
donatien | 6:86e89a0369b9 | 87 | return -1; |
donatien | 6:86e89a0369b9 | 88 | } |
donatien | 6:86e89a0369b9 | 89 | memcpy(scheme, schemePtr, hostPtr - schemePtr); |
donatien | 6:86e89a0369b9 | 90 | scheme[hostPtr - schemePtr] = '\0'; |
donatien | 6:86e89a0369b9 | 91 | |
donatien | 6:86e89a0369b9 | 92 | hostPtr+=3; |
donatien | 6:86e89a0369b9 | 93 | |
donatien | 6:86e89a0369b9 | 94 | size_t hostLen = 0; |
samux | 3:9589afa4712e | 95 | |
donatien | 6:86e89a0369b9 | 96 | char* portPtr = strchr(hostPtr, ':'); |
donatien | 6:86e89a0369b9 | 97 | if( portPtr != NULL ) |
donatien | 6:86e89a0369b9 | 98 | { |
donatien | 6:86e89a0369b9 | 99 | hostLen = portPtr - hostPtr; |
donatien | 6:86e89a0369b9 | 100 | portPtr++; |
donatien | 6:86e89a0369b9 | 101 | if( sscanf(portPtr, "%hu", port) != 1) |
donatien | 6:86e89a0369b9 | 102 | { |
donatien | 6:86e89a0369b9 | 103 | WARN("Could not find port"); |
donatien | 6:86e89a0369b9 | 104 | return -1; |
donatien | 6:86e89a0369b9 | 105 | } |
donatien | 6:86e89a0369b9 | 106 | } |
donatien | 6:86e89a0369b9 | 107 | else |
donatien | 6:86e89a0369b9 | 108 | { |
donatien | 6:86e89a0369b9 | 109 | *port=0; |
donatien | 6:86e89a0369b9 | 110 | } |
donatien | 6:86e89a0369b9 | 111 | char* pathPtr = strchr(hostPtr, '/'); |
donatien | 6:86e89a0369b9 | 112 | if( hostLen == 0 ) |
donatien | 6:86e89a0369b9 | 113 | { |
donatien | 6:86e89a0369b9 | 114 | hostLen = pathPtr - hostPtr; |
donatien | 6:86e89a0369b9 | 115 | } |
samux | 3:9589afa4712e | 116 | |
donatien | 6:86e89a0369b9 | 117 | if( maxHostLen < hostLen + 1 ) //including NULL-terminating char |
donatien | 6:86e89a0369b9 | 118 | { |
donatien | 6:86e89a0369b9 | 119 | WARN("Host str is too small (%d >= %d)", maxHostLen, hostLen + 1); |
donatien | 6:86e89a0369b9 | 120 | return -1; |
donatien | 6:86e89a0369b9 | 121 | } |
donatien | 6:86e89a0369b9 | 122 | memcpy(host, hostPtr, hostLen); |
donatien | 6:86e89a0369b9 | 123 | host[hostLen] = '\0'; |
samux | 3:9589afa4712e | 124 | |
donatien | 6:86e89a0369b9 | 125 | size_t pathLen; |
donatien | 6:86e89a0369b9 | 126 | char* fragmentPtr = strchr(hostPtr, '#'); |
donatien | 6:86e89a0369b9 | 127 | if(fragmentPtr != NULL) |
donatien | 6:86e89a0369b9 | 128 | { |
donatien | 6:86e89a0369b9 | 129 | pathLen = fragmentPtr - pathPtr; |
donatien | 6:86e89a0369b9 | 130 | } |
donatien | 6:86e89a0369b9 | 131 | else |
donatien | 6:86e89a0369b9 | 132 | { |
donatien | 6:86e89a0369b9 | 133 | pathLen = strlen(pathPtr); |
donatien | 6:86e89a0369b9 | 134 | } |
donatien | 6:86e89a0369b9 | 135 | |
donatien | 6:86e89a0369b9 | 136 | if( maxPathLen < pathLen + 1 ) //including NULL-terminating char |
donatien | 6:86e89a0369b9 | 137 | { |
donatien | 6:86e89a0369b9 | 138 | WARN("Path str is too small (%d >= %d)", maxPathLen, pathLen + 1); |
donatien | 6:86e89a0369b9 | 139 | return -1; |
donatien | 6:86e89a0369b9 | 140 | } |
donatien | 6:86e89a0369b9 | 141 | memcpy(path, pathPtr, pathLen); |
donatien | 6:86e89a0369b9 | 142 | path[pathLen] = '\0'; |
donatien | 6:86e89a0369b9 | 143 | |
donatien | 6:86e89a0369b9 | 144 | return 0; |
samux | 3:9589afa4712e | 145 | } |
samux | 3:9589afa4712e | 146 | |
samux | 3:9589afa4712e | 147 | |
samux | 3:9589afa4712e | 148 | bool Websocket::connect() { |
samux | 3:9589afa4712e | 149 | char cmd[200]; |
samux | 3:9589afa4712e | 150 | |
donatien | 6:86e89a0369b9 | 151 | while (socket.connect(host, port) < 0) { |
donatien | 6:86e89a0369b9 | 152 | ERR("Unable to connect to (%s) on port (%d)", host, port); |
samux | 3:9589afa4712e | 153 | wait(0.2); |
donatien | 6:86e89a0369b9 | 154 | return false; |
samux | 3:9589afa4712e | 155 | } |
defrost | 12:0979caf96fa6 | 156 | INFO("TCP/IP Connection established, upgrading protocol..."); |
samux | 3:9589afa4712e | 157 | // sent http header to upgrade to the ws protocol |
donatien | 6:86e89a0369b9 | 158 | sprintf(cmd, "GET %s HTTP/1.1\r\n", path); |
samux | 3:9589afa4712e | 159 | write(cmd, strlen(cmd)); |
donatien | 6:86e89a0369b9 | 160 | |
donatien | 6:86e89a0369b9 | 161 | sprintf(cmd, "Host: %s:%d\r\n", host, port); |
samux | 3:9589afa4712e | 162 | write(cmd, strlen(cmd)); |
samux | 3:9589afa4712e | 163 | |
samux | 3:9589afa4712e | 164 | sprintf(cmd, "Upgrade: WebSocket\r\n"); |
samux | 3:9589afa4712e | 165 | write(cmd, strlen(cmd)); |
samux | 3:9589afa4712e | 166 | |
samux | 3:9589afa4712e | 167 | sprintf(cmd, "Connection: Upgrade\r\n"); |
samux | 3:9589afa4712e | 168 | write(cmd, strlen(cmd)); |
samux | 3:9589afa4712e | 169 | |
samux | 3:9589afa4712e | 170 | sprintf(cmd, "Sec-WebSocket-Key: L159VM0TWUzyDxwJEIEzjw==\r\n"); |
samux | 3:9589afa4712e | 171 | write(cmd, strlen(cmd)); |
samux | 3:9589afa4712e | 172 | |
samux | 3:9589afa4712e | 173 | sprintf(cmd, "Sec-WebSocket-Version: 13\r\n\r\n"); |
samux | 3:9589afa4712e | 174 | int ret = write(cmd, strlen(cmd)); |
samux | 3:9589afa4712e | 175 | if (ret != strlen(cmd)) { |
samux | 3:9589afa4712e | 176 | close(); |
samux | 3:9589afa4712e | 177 | ERR("Could not send request"); |
samux | 3:9589afa4712e | 178 | return false; |
samux | 3:9589afa4712e | 179 | } |
samux | 3:9589afa4712e | 180 | |
samux | 3:9589afa4712e | 181 | ret = read(cmd, 200, 100); |
samux | 3:9589afa4712e | 182 | if (ret < 0) { |
samux | 3:9589afa4712e | 183 | close(); |
samux | 3:9589afa4712e | 184 | ERR("Could not receive answer\r\n"); |
samux | 3:9589afa4712e | 185 | return false; |
samux | 3:9589afa4712e | 186 | } |
samux | 3:9589afa4712e | 187 | |
samux | 3:9589afa4712e | 188 | cmd[ret] = '\0'; |
samux | 3:9589afa4712e | 189 | DBG("recv: %s\r\n", cmd); |
samux | 3:9589afa4712e | 190 | |
samux | 3:9589afa4712e | 191 | if ( strstr(cmd, "DdLWT/1JcX+nQFHebYP+rqEx5xI=") == NULL ) { |
samux | 3:9589afa4712e | 192 | ERR("Wrong answer from server, got \"%s\" instead\r\n", cmd); |
samux | 3:9589afa4712e | 193 | do { |
samux | 3:9589afa4712e | 194 | ret = read(cmd, 200, 100); |
samux | 3:9589afa4712e | 195 | if (ret < 0) { |
samux | 3:9589afa4712e | 196 | ERR("Could not receive answer\r\n"); |
samux | 3:9589afa4712e | 197 | return false; |
samux | 3:9589afa4712e | 198 | } |
samux | 3:9589afa4712e | 199 | cmd[ret] = '\0'; |
defrost | 12:0979caf96fa6 | 200 | DBG("%s",cmd); |
samux | 3:9589afa4712e | 201 | } while (ret > 0); |
samux | 3:9589afa4712e | 202 | close(); |
samux | 3:9589afa4712e | 203 | return false; |
samux | 3:9589afa4712e | 204 | } |
samux | 3:9589afa4712e | 205 | |
defrost | 12:0979caf96fa6 | 206 | INFO("\r\n\thost: %s\r\n\tpath: %s\r\n\tport: %d\r\n\r\n", host, path, port); |
samux | 3:9589afa4712e | 207 | return true; |
samux | 3:9589afa4712e | 208 | } |
samux | 3:9589afa4712e | 209 | |
samux | 4:466f90b7849a | 210 | int Websocket::sendLength(uint32_t len, char * msg) { |
samux | 3:9589afa4712e | 211 | |
samux | 3:9589afa4712e | 212 | if (len < 126) { |
samux | 4:466f90b7849a | 213 | msg[0] = len | (1<<7); |
samux | 3:9589afa4712e | 214 | return 1; |
samux | 3:9589afa4712e | 215 | } else if (len < 65535) { |
samux | 4:466f90b7849a | 216 | msg[0] = 126 | (1<<7); |
samux | 4:466f90b7849a | 217 | msg[1] = (len >> 8) & 0xff; |
samux | 4:466f90b7849a | 218 | msg[2] = len & 0xff; |
samux | 3:9589afa4712e | 219 | return 3; |
samux | 3:9589afa4712e | 220 | } else { |
samux | 4:466f90b7849a | 221 | msg[0] = 127 | (1<<7); |
samux | 3:9589afa4712e | 222 | for (int i = 0; i < 8; i++) { |
samux | 4:466f90b7849a | 223 | msg[i+1] = (len >> i*8) & 0xff; |
samux | 3:9589afa4712e | 224 | } |
samux | 3:9589afa4712e | 225 | return 9; |
samux | 3:9589afa4712e | 226 | } |
samux | 3:9589afa4712e | 227 | } |
samux | 3:9589afa4712e | 228 | |
samux | 3:9589afa4712e | 229 | int Websocket::readChar(char * pC, bool block) { |
samux | 3:9589afa4712e | 230 | return read(pC, 1, 1); |
samux | 3:9589afa4712e | 231 | } |
samux | 3:9589afa4712e | 232 | |
samux | 4:466f90b7849a | 233 | int Websocket::sendOpcode(uint8_t opcode, char * msg) { |
samux | 4:466f90b7849a | 234 | msg[0] = 0x80 | (opcode & 0x0f); |
samux | 4:466f90b7849a | 235 | return 1; |
samux | 3:9589afa4712e | 236 | } |
samux | 3:9589afa4712e | 237 | |
samux | 4:466f90b7849a | 238 | int Websocket::sendMask(char * msg) { |
samux | 3:9589afa4712e | 239 | for (int i = 0; i < 4; i++) { |
samux | 4:466f90b7849a | 240 | msg[i] = 0; |
samux | 3:9589afa4712e | 241 | } |
samux | 3:9589afa4712e | 242 | return 4; |
samux | 3:9589afa4712e | 243 | } |
samux | 3:9589afa4712e | 244 | |
samux | 3:9589afa4712e | 245 | int Websocket::send(char * str) { |
samux | 4:466f90b7849a | 246 | char msg[strlen(str) + 15]; |
samux | 4:466f90b7849a | 247 | int idx = 0; |
samux | 4:466f90b7849a | 248 | idx = sendOpcode(0x01, msg); |
samux | 4:466f90b7849a | 249 | idx += sendLength(strlen(str), msg + idx); |
samux | 4:466f90b7849a | 250 | idx += sendMask(msg + idx); |
samux | 4:466f90b7849a | 251 | memcpy(msg+idx, str, strlen(str)); |
samux | 4:466f90b7849a | 252 | int res = write(msg, idx + strlen(str)); |
samux | 3:9589afa4712e | 253 | return res; |
samux | 3:9589afa4712e | 254 | } |
samux | 3:9589afa4712e | 255 | |
samux | 3:9589afa4712e | 256 | |
defrost | 23:0d7b33cd11f9 | 257 | int Websocket::readmsg(char * message) { |
samux | 3:9589afa4712e | 258 | int i = 0; |
samux | 3:9589afa4712e | 259 | uint32_t len_msg; |
samux | 3:9589afa4712e | 260 | char opcode = 0; |
samux | 3:9589afa4712e | 261 | char c; |
samux | 3:9589afa4712e | 262 | char mask[4] = {0, 0, 0, 0}; |
samux | 3:9589afa4712e | 263 | bool is_masked = false; |
samux | 3:9589afa4712e | 264 | Timer tmr; |
samux | 3:9589afa4712e | 265 | |
samux | 3:9589afa4712e | 266 | // read the opcode |
samux | 3:9589afa4712e | 267 | tmr.start(); |
samux | 3:9589afa4712e | 268 | while (true) { |
samux | 3:9589afa4712e | 269 | if (tmr.read() > 3) { |
samux | 3:9589afa4712e | 270 | DBG("timeout ws\r\n"); |
defrost | 23:0d7b33cd11f9 | 271 | return -1; |
samux | 3:9589afa4712e | 272 | } |
donatien | 5:bb09d7a6c92f | 273 | |
donatien | 5:bb09d7a6c92f | 274 | if(!socket.is_connected()) |
donatien | 5:bb09d7a6c92f | 275 | { |
donatien | 5:bb09d7a6c92f | 276 | WARN("Connection was closed by server"); |
defrost | 23:0d7b33cd11f9 | 277 | return -1; |
donatien | 5:bb09d7a6c92f | 278 | } |
samux | 3:9589afa4712e | 279 | |
samux | 3:9589afa4712e | 280 | socket.set_blocking(false, 1); |
samux | 3:9589afa4712e | 281 | if (socket.receive(&opcode, 1) != 1) { |
samux | 3:9589afa4712e | 282 | socket.set_blocking(false, 2000); |
defrost | 23:0d7b33cd11f9 | 283 | return 0; |
samux | 3:9589afa4712e | 284 | } |
samux | 3:9589afa4712e | 285 | |
samux | 3:9589afa4712e | 286 | socket.set_blocking(false, 2000); |
samux | 3:9589afa4712e | 287 | |
samux | 3:9589afa4712e | 288 | if (opcode == 0x81) |
samux | 3:9589afa4712e | 289 | break; |
samux | 3:9589afa4712e | 290 | } |
defrost | 12:0979caf96fa6 | 291 | DBG("opcode: 0x%X", opcode); |
samux | 3:9589afa4712e | 292 | |
samux | 3:9589afa4712e | 293 | readChar(&c); |
samux | 3:9589afa4712e | 294 | len_msg = c & 0x7f; |
samux | 3:9589afa4712e | 295 | is_masked = c & 0x80; |
samux | 3:9589afa4712e | 296 | if (len_msg == 126) { |
samux | 3:9589afa4712e | 297 | readChar(&c); |
samux | 3:9589afa4712e | 298 | len_msg = c << 8; |
samux | 3:9589afa4712e | 299 | readChar(&c); |
samux | 3:9589afa4712e | 300 | len_msg += c; |
samux | 3:9589afa4712e | 301 | } else if (len_msg == 127) { |
samux | 3:9589afa4712e | 302 | len_msg = 0; |
samux | 3:9589afa4712e | 303 | for (int i = 0; i < 8; i++) { |
samux | 3:9589afa4712e | 304 | readChar(&c); |
samux | 3:9589afa4712e | 305 | len_msg += (c << (7-i)*8); |
samux | 3:9589afa4712e | 306 | } |
samux | 3:9589afa4712e | 307 | } |
samux | 3:9589afa4712e | 308 | |
samux | 3:9589afa4712e | 309 | if (len_msg == 0) { |
defrost | 23:0d7b33cd11f9 | 310 | return 0; |
samux | 3:9589afa4712e | 311 | } |
defrost | 12:0979caf96fa6 | 312 | DBG("length: %d", len_msg); |
samux | 3:9589afa4712e | 313 | |
samux | 3:9589afa4712e | 314 | if (is_masked) { |
samux | 3:9589afa4712e | 315 | for (i = 0; i < 4; i++) |
samux | 3:9589afa4712e | 316 | readChar(&c); |
samux | 3:9589afa4712e | 317 | mask[i] = c; |
samux | 3:9589afa4712e | 318 | } |
defrost | 12:0979caf96fa6 | 319 | |
defrost | 12:0979caf96fa6 | 320 | DBG("Done readChar."); |
samux | 3:9589afa4712e | 321 | |
samux | 3:9589afa4712e | 322 | int nb = read(message, len_msg, len_msg); |
defrost | 12:0979caf96fa6 | 323 | DBG("Done nb:%d = read(message:%s, len_msg:%d, len_msg:%d)", nb, message, len_msg, len_msg); |
samux | 3:9589afa4712e | 324 | if (nb != len_msg) |
defrost | 23:0d7b33cd11f9 | 325 | return 0; |
samux | 3:9589afa4712e | 326 | |
samux | 3:9589afa4712e | 327 | for (i = 0; i < len_msg; i++) { |
samux | 3:9589afa4712e | 328 | message[i] = message[i] ^ mask[i % 4]; |
samux | 3:9589afa4712e | 329 | } |
samux | 3:9589afa4712e | 330 | |
samux | 3:9589afa4712e | 331 | message[len_msg] = '\0'; |
defrost | 12:0979caf96fa6 | 332 | DBG("Websocket::read() returning true, message:%s", message); |
defrost | 23:0d7b33cd11f9 | 333 | return 1; |
samux | 3:9589afa4712e | 334 | } |
samux | 3:9589afa4712e | 335 | |
samux | 3:9589afa4712e | 336 | bool Websocket::close() { |
samux | 3:9589afa4712e | 337 | if (!is_connected()) |
samux | 3:9589afa4712e | 338 | return false; |
samux | 3:9589afa4712e | 339 | |
samux | 3:9589afa4712e | 340 | int ret = socket.close(); |
samux | 3:9589afa4712e | 341 | if (ret < 0) { |
samux | 3:9589afa4712e | 342 | ERR("Could not disconnect"); |
samux | 3:9589afa4712e | 343 | return false; |
samux | 3:9589afa4712e | 344 | } |
samux | 3:9589afa4712e | 345 | return true; |
samux | 3:9589afa4712e | 346 | } |
samux | 3:9589afa4712e | 347 | |
samux | 3:9589afa4712e | 348 | bool Websocket::is_connected() { |
samux | 3:9589afa4712e | 349 | return socket.is_connected(); |
samux | 3:9589afa4712e | 350 | } |
samux | 3:9589afa4712e | 351 | |
donatien | 6:86e89a0369b9 | 352 | char* Websocket::getPath() { |
samux | 3:9589afa4712e | 353 | return path; |
samux | 3:9589afa4712e | 354 | } |
samux | 3:9589afa4712e | 355 | |
samux | 3:9589afa4712e | 356 | int Websocket::write(char * str, int len) { |
samux | 3:9589afa4712e | 357 | int res = 0, idx = 0; |
samux | 3:9589afa4712e | 358 | |
samux | 3:9589afa4712e | 359 | for (int j = 0; j < MAX_TRY_WRITE; j++) { |
donatien | 5:bb09d7a6c92f | 360 | |
donatien | 5:bb09d7a6c92f | 361 | if(!socket.is_connected()) |
donatien | 5:bb09d7a6c92f | 362 | { |
donatien | 5:bb09d7a6c92f | 363 | WARN("Connection was closed by server"); |
donatien | 5:bb09d7a6c92f | 364 | break; |
donatien | 5:bb09d7a6c92f | 365 | } |
samux | 3:9589afa4712e | 366 | |
samux | 3:9589afa4712e | 367 | if ((res = socket.send_all(str + idx, len - idx)) == -1) |
samux | 3:9589afa4712e | 368 | continue; |
samux | 3:9589afa4712e | 369 | |
samux | 3:9589afa4712e | 370 | idx += res; |
samux | 3:9589afa4712e | 371 | |
samux | 3:9589afa4712e | 372 | if (idx == len) |
samux | 3:9589afa4712e | 373 | return len; |
samux | 3:9589afa4712e | 374 | } |
defrost | 10:fc40c56e8a3c | 375 | WARN("Websocket::write.idx on exit: %d", idx); |
samux | 3:9589afa4712e | 376 | return (idx == 0) ? -1 : idx; |
samux | 3:9589afa4712e | 377 | } |
samux | 3:9589afa4712e | 378 | |
samux | 3:9589afa4712e | 379 | int Websocket::read(char * str, int len, int min_len) { |
samux | 3:9589afa4712e | 380 | int res = 0, idx = 0; |
samux | 3:9589afa4712e | 381 | |
samux | 3:9589afa4712e | 382 | for (int j = 0; j < MAX_TRY_WRITE; j++) { |
samux | 3:9589afa4712e | 383 | |
samux | 3:9589afa4712e | 384 | if ((res = socket.receive_all(str + idx, len - idx)) == -1) |
samux | 3:9589afa4712e | 385 | continue; |
samux | 3:9589afa4712e | 386 | idx += res; |
defrost | 12:0979caf96fa6 | 387 | DBG("In read(* str, len, min_len), res = %d, idx = %d", res, idx); |
samux | 3:9589afa4712e | 388 | if (idx == len || (min_len != -1 && idx > min_len)) |
samux | 3:9589afa4712e | 389 | return idx; |
samux | 3:9589afa4712e | 390 | } |
samux | 3:9589afa4712e | 391 | |
samux | 3:9589afa4712e | 392 | return (idx == 0) ? -1 : idx; |
samux | 3:9589afa4712e | 393 | } |