Protegemed / prtgmdWebSocketClient

Client of WebSocket protocol

Fork of WebSocketClient by Samuel Mokrani

Websocket.cpp@8:c9da00db9d33, 2017-02-24 (annotated)

Committer:
mauricioaschmitz
Date:
Fri Feb 24 20:06:49 2017 +0000
Revision:
8:c9da00db9d33
Parent:
7:4567996414a5 
Added project prtgmdWebSocketClient

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 3:9589afa4712e 1 #include "Websocket.h"
mauricioaschmitz 8:c9da00db9d33 2 #include "Pmed_reset.h"
mauricioaschmitz 8:c9da00db9d33 3 #include "Log.h"
samux 3:9589afa4712e 4
samux 7:4567996414a5 5 #define MAX_TRY_WRITE 20
samux 7:4567996414a5 6 #define MAX_TRY_READ 10
mauricioaschmitz 8:c9da00db9d33 7 #define MAX_TRY_CONNECT 50
mauricioaschmitz 8:c9da00db9d33 8 #define WAIT_CONNECT_TIME 10000
samux 3:9589afa4712e 9
samux 3:9589afa4712e 10 //Debug is disabled by default
samux 3:9589afa4712e 11 #if 0
samux 3:9589afa4712e 12 #define DBG(x, ...) std::printf("[WebSocket : DBG]"x"\r\n", ##__VA_ARGS__);
samux 3:9589afa4712e 13 #define WARN(x, ...) std::printf("[WebSocket : WARN]"x"\r\n", ##__VA_ARGS__);
samux 3:9589afa4712e 14 #define ERR(x, ...) std::printf("[WebSocket : ERR]"x"\r\n", ##__VA_ARGS__);
samux 3:9589afa4712e 15 #else
samux 3:9589afa4712e 16 #define DBG(x, ...)
samux 3:9589afa4712e 17 #define WARN(x, ...)
samux 3:9589afa4712e 18 #define ERR(x, ...)
samux 3:9589afa4712e 19 #endif
samux 3:9589afa4712e 20
mauricioaschmitz 8:c9da00db9d33 21 #define INFO(x, ...) printf("[WebSocket : INFO]"x"\r\n", ##__VA_ARGS__);
mauricioaschmitz 8:c9da00db9d33 22
mauricioaschmitz 8:c9da00db9d33 23 char * Websocket::captureMessage;
mauricioaschmitz 8:c9da00db9d33 24 bool Websocket::haveMessage;
mauricioaschmitz 8:c9da00db9d33 25 bool Websocket::isConect;
mauricioaschmitz 8:c9da00db9d33 26 bool disconnectedWS = false;
samux 3:9589afa4712e 27
mauricioaschmitz 8:c9da00db9d33 28 void Websocket::Websocket_Thread(void const *arg)
mauricioaschmitz 8:c9da00db9d33 29 {
mauricioaschmitz 8:c9da00db9d33 30 //Log::writeEntry("WebSocket Thread Start");
mauricioaschmitz 8:c9da00db9d33 31 printf("Thread WebSocket Iniciada\r\n");
mauricioaschmitz 8:c9da00db9d33 32 int i = 0, f = 0;
mauricioaschmitz 8:c9da00db9d33 33 char *comando = NULL;
mauricioaschmitz 8:c9da00db9d33 34 char *tomada = NULL;
mauricioaschmitz 8:c9da00db9d33 35 char *canal = NULL;
mauricioaschmitz 8:c9da00db9d33 36 char *limite = NULL;
mauricioaschmitz 8:c9da00db9d33 37 char server[30];
mauricioaschmitz 8:c9da00db9d33 38 char buffer[1024] = {};
mauricioaschmitz 8:c9da00db9d33 39 //bool external = false;
mauricioaschmitz 8:c9da00db9d33 40 strcpy(server, "ws://");
mauricioaschmitz 8:c9da00db9d33 41 strcat(server, Settings::get_networkServer());
mauricioaschmitz 8:c9da00db9d33 42 strcat(server, ":8080");
mauricioaschmitz 8:c9da00db9d33 43
mauricioaschmitz 8:c9da00db9d33 44 //printf("Servidor WS: %s", server);
mauricioaschmitz 8:c9da00db9d33 45
mauricioaschmitz 8:c9da00db9d33 46 Websocket ws(server);
mauricioaschmitz 8:c9da00db9d33 47
mauricioaschmitz 8:c9da00db9d33 48 while(1){
mauricioaschmitz 8:c9da00db9d33 49 if(ws.is_connected()){
mauricioaschmitz 8:c9da00db9d33 50 if (f == 0){
mauricioaschmitz 8:c9da00db9d33 51 //Log::writeEntry("WebSocket Conectado.");
mauricioaschmitz 8:c9da00db9d33 52 //printf("\nMensagem do MBED para servidor WebSocket em PHP\n\n");
mauricioaschmitz 8:c9da00db9d33 53 //ws.send("#*MBEDStart*#Mensagem do MBED para servidor WebSocket em PHP\n"); //mensagem para registrar login do mbed no banco de dados (ainda por implementar)
mauricioaschmitz 8:c9da00db9d33 54 f = 1;
mauricioaschmitz 8:c9da00db9d33 55 }
mauricioaschmitz 8:c9da00db9d33 56 if(disconnectedWS != false){
mauricioaschmitz 8:c9da00db9d33 57 disconnectedWS = false;
mauricioaschmitz 8:c9da00db9d33 58 }
mauricioaschmitz 8:c9da00db9d33 59 if(haveMessage){
mauricioaschmitz 8:c9da00db9d33 60 ws.send(captureMessage);
mauricioaschmitz 8:c9da00db9d33 61 haveMessage = false;
mauricioaschmitz 8:c9da00db9d33 62 captureMessage = NULL;
mauricioaschmitz 8:c9da00db9d33 63 }
mauricioaschmitz 8:c9da00db9d33 64 if (ws.read(buffer)) {
mauricioaschmitz 8:c9da00db9d33 65 //ws.send("#*MBEDTest*#");
mauricioaschmitz 8:c9da00db9d33 66 //printf("Recebido Mensagem WebSocket: %s\r\n", buffer);
mauricioaschmitz 8:c9da00db9d33 67 comando = strtok(buffer, ":");
mauricioaschmitz 8:c9da00db9d33 68 if(strcmp(comando, "test") == 0){
mauricioaschmitz 8:c9da00db9d33 69 //printf("\r\nRecebido por WebSocket o Comando de Teste.");
mauricioaschmitz 8:c9da00db9d33 70 ws.send("#*MBEDTest*#");
mauricioaschmitz 8:c9da00db9d33 71 //Log::writeEntry("Recebido por WebSocket o Comando de Teste.");
mauricioaschmitz 8:c9da00db9d33 72 }
mauricioaschmitz 8:c9da00db9d33 73 if(strcmp(comando, "capture") == 0){
mauricioaschmitz 8:c9da00db9d33 74 tomada = strtok(NULL, ":");
mauricioaschmitz 8:c9da00db9d33 75 canal = strtok(NULL, " ");
mauricioaschmitz 8:c9da00db9d33 76 /*
mauricioaschmitz 8:c9da00db9d33 77 printf("Comando: %s\n", comando);
mauricioaschmitz 8:c9da00db9d33 78 printf("Tomada: %s\n", tomada);
mauricioaschmitz 8:c9da00db9d33 79 printf("Canal: %s\n", canal);
mauricioaschmitz 8:c9da00db9d33 80 printf("Tamanho da string: %d\n", strlen(buffer));
mauricioaschmitz 8:c9da00db9d33 81 */
mauricioaschmitz 8:c9da00db9d33 82
mauricioaschmitz 8:c9da00db9d33 83 EventDetector::externalCapture(atoi(tomada), canal[0]);
mauricioaschmitz 8:c9da00db9d33 84 }
mauricioaschmitz 8:c9da00db9d33 85 if(strcmp(comando, "reset") == 0){
mauricioaschmitz 8:c9da00db9d33 86 Pmed_reset("Reiniciando o MBED por WebSocket.");
mauricioaschmitz 8:c9da00db9d33 87 }
mauricioaschmitz 8:c9da00db9d33 88
mauricioaschmitz 8:c9da00db9d33 89 if(strcmp(comando, "setLimit") == 0 || strcmp(comando, "setStandByLimit") == 0){
mauricioaschmitz 8:c9da00db9d33 90 tomada = strtok(NULL, ":");
mauricioaschmitz 8:c9da00db9d33 91 canal = strtok(NULL, ":");
mauricioaschmitz 8:c9da00db9d33 92 limite = strtok(NULL, " ");
mauricioaschmitz 8:c9da00db9d33 93 for(i=0; (unsigned)i < _PRTGMD_SETTINGS_MAX_NUMBER_OF_OUTLETS_; i++){
mauricioaschmitz 8:c9da00db9d33 94 if(atoi(tomada) == Settings::get_outlet(i)){
mauricioaschmitz 8:c9da00db9d33 95 if(strcmp(comando, "setLimit") == 0){
mauricioaschmitz 8:c9da00db9d33 96 if(strcmp(canal, "p") == 0){
mauricioaschmitz 8:c9da00db9d33 97 printf("Entrou canal fase e setou limite %s para tomada %s\r\n", limite, tomada);
mauricioaschmitz 8:c9da00db9d33 98 Settings::set_limit(i*2,strtod(limite, NULL));
mauricioaschmitz 8:c9da00db9d33 99 }
mauricioaschmitz 8:c9da00db9d33 100 if(strcmp(canal, "d") == 0){
mauricioaschmitz 8:c9da00db9d33 101 printf("Entrou canal fuga e setou limite %s para tomada %s\r\n", limite, tomada);
mauricioaschmitz 8:c9da00db9d33 102 Settings::set_limit(i*2+1,strtod(limite, NULL));
mauricioaschmitz 8:c9da00db9d33 103 }
mauricioaschmitz 8:c9da00db9d33 104 }
mauricioaschmitz 8:c9da00db9d33 105 if(strcmp(comando, "setStandByLimit") == 0){
mauricioaschmitz 8:c9da00db9d33 106 if(strcmp(canal, "p") == 0){
mauricioaschmitz 8:c9da00db9d33 107 printf("Entrou canal StandBy de fase e setou limite %s para tomada %s\r\n", limite, tomada);
mauricioaschmitz 8:c9da00db9d33 108 Settings::set_standbyLimit(i*2,strtod(limite, NULL));
mauricioaschmitz 8:c9da00db9d33 109 }
mauricioaschmitz 8:c9da00db9d33 110 if(strcmp(canal, "d") == 0){
mauricioaschmitz 8:c9da00db9d33 111 printf("Entrou canal StandBy de fuga e setou limite %s para tomada %s\r\n", limite, tomada);
mauricioaschmitz 8:c9da00db9d33 112 Settings::set_standbyLimit(i*2+1,strtod(limite, NULL));
mauricioaschmitz 8:c9da00db9d33 113 }
mauricioaschmitz 8:c9da00db9d33 114 }
mauricioaschmitz 8:c9da00db9d33 115 break;
mauricioaschmitz 8:c9da00db9d33 116 }else{
mauricioaschmitz 8:c9da00db9d33 117 if(i == _PRTGMD_SETTINGS_MAX_NUMBER_OF_OUTLETS_ - 1){
mauricioaschmitz 8:c9da00db9d33 118 printf("Tomada %d nao encontrada para atualizar limite!\r\n", atoi(tomada));
mauricioaschmitz 8:c9da00db9d33 119 }
mauricioaschmitz 8:c9da00db9d33 120 }
mauricioaschmitz 8:c9da00db9d33 121 }
mauricioaschmitz 8:c9da00db9d33 122 //printf("Comando: %s\n", comando);
mauricioaschmitz 8:c9da00db9d33 123 //printf("Tomada: %d\n", atoi(tomada));
mauricioaschmitz 8:c9da00db9d33 124 //printf("Canal: %s\n", canal);
mauricioaschmitz 8:c9da00db9d33 125 //printf("Limite: %f\n", strtod(limite, NULL));
mauricioaschmitz 8:c9da00db9d33 126 }
mauricioaschmitz 8:c9da00db9d33 127 /*
mauricioaschmitz 8:c9da00db9d33 128 if(strcmp(comando, "iniciar") == 0){
mauricioaschmitz 8:c9da00db9d33 129 printf("\n\nChegou o Iniciar!!!\n\n");
mauricioaschmitz 8:c9da00db9d33 130 external = true;
mauricioaschmitz 8:c9da00db9d33 131 }
mauricioaschmitz 8:c9da00db9d33 132 if(strcmp(comando, "parar") == 0){
mauricioaschmitz 8:c9da00db9d33 133 printf("\n\nChegou o Parar!!!\n\n");
mauricioaschmitz 8:c9da00db9d33 134 external = false;
mauricioaschmitz 8:c9da00db9d33 135 }
mauricioaschmitz 8:c9da00db9d33 136 if(external){
mauricioaschmitz 8:c9da00db9d33 137
mauricioaschmitz 8:c9da00db9d33 138 }*/
mauricioaschmitz 8:c9da00db9d33 139 }
mauricioaschmitz 8:c9da00db9d33 140 /*
mauricioaschmitz 8:c9da00db9d33 141 if (!ws.is_connected()){
mauricioaschmitz 8:c9da00db9d33 142 printf("Caiu a conexao!!!\n");
mauricioaschmitz 8:c9da00db9d33 143 Thread::wait(Settings::get_delayTry());
mauricioaschmitz 8:c9da00db9d33 144 for(int i=0; i < MAX_TRY_CONNECT; i++){
mauricioaschmitz 8:c9da00db9d33 145 Thread::wait(Settings::get_delayTry());
mauricioaschmitz 8:c9da00db9d33 146 //if(ws.connect()){
mauricioaschmitz 8:c9da00db9d33 147 // break;
mauricioaschmitz 8:c9da00db9d33 148 //}
mauricioaschmitz 8:c9da00db9d33 149 }
mauricioaschmitz 8:c9da00db9d33 150 //Websocket ws("ws://192.168.103.101:8080");
mauricioaschmitz 8:c9da00db9d33 151 ws.connect();
mauricioaschmitz 8:c9da00db9d33 152 }*/
mauricioaschmitz 8:c9da00db9d33 153 }else{
mauricioaschmitz 8:c9da00db9d33 154 if(!disconnectedWS){
mauricioaschmitz 8:c9da00db9d33 155 if(ws.close()){
mauricioaschmitz 8:c9da00db9d33 156 disconnectedWS = true;
mauricioaschmitz 8:c9da00db9d33 157 Log::writeEntry("WebSocket Desconectado.");
mauricioaschmitz 8:c9da00db9d33 158 }
mauricioaschmitz 8:c9da00db9d33 159 }
mauricioaschmitz 8:c9da00db9d33 160 Thread::wait(WAIT_CONNECT_TIME);
mauricioaschmitz 8:c9da00db9d33 161 if(ws.connect()){
mauricioaschmitz 8:c9da00db9d33 162 //Log::writeEntry("WebSocket Conectado.");
mauricioaschmitz 8:c9da00db9d33 163 printf("Thread WebSocket Conectou no Servidor %s\r\n", Settings::get_networkServer());
mauricioaschmitz 8:c9da00db9d33 164 }
mauricioaschmitz 8:c9da00db9d33 165 //Thread::wait(10000);
mauricioaschmitz 8:c9da00db9d33 166 }
mauricioaschmitz 8:c9da00db9d33 167 }
mauricioaschmitz 8:c9da00db9d33 168
mauricioaschmitz 8:c9da00db9d33 169 }
mauricioaschmitz 8:c9da00db9d33 170
mauricioaschmitz 8:c9da00db9d33 171 Websocket::Websocket(char const * url) {
samux 3:9589afa4712e 172 fillFields(url);
samux 3:9589afa4712e 173 socket.set_blocking(false, 400);
samux 3:9589afa4712e 174 }
samux 3:9589afa4712e 175
mauricioaschmitz 8:c9da00db9d33 176 bool Websocket::wsIsConnected(){
mauricioaschmitz 8:c9da00db9d33 177 return isConect;
mauricioaschmitz 8:c9da00db9d33 178 }
mauricioaschmitz 8:c9da00db9d33 179
mauricioaschmitz 8:c9da00db9d33 180 void Websocket::fillFields(char const * url) {
donatien 6:86e89a0369b9 181 int ret = parseURL(url, scheme, sizeof(scheme), host, sizeof(host), &port, path, sizeof(path));
donatien 6:86e89a0369b9 182 if(ret)
donatien 6:86e89a0369b9 183 {
donatien 6:86e89a0369b9 184 ERR("URL parsing failed; please use: \"ws://ip-or-domain[:port]/path\"");
donatien 6:86e89a0369b9 185 return;
donatien 6:86e89a0369b9 186 }
samux 3:9589afa4712e 187
donatien 6:86e89a0369b9 188 if(port == 0) //TODO do handle WSS->443
donatien 6:86e89a0369b9 189 {
donatien 6:86e89a0369b9 190 port = 80;
donatien 6:86e89a0369b9 191 }
donatien 6:86e89a0369b9 192
donatien 6:86e89a0369b9 193 if(strcmp(scheme, "ws"))
donatien 6:86e89a0369b9 194 {
donatien 6:86e89a0369b9 195 ERR("Wrong scheme, please use \"ws\" instead");
donatien 6:86e89a0369b9 196 }
donatien 6:86e89a0369b9 197 }
samux 3:9589afa4712e 198
donatien 6:86e89a0369b9 199 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 200 {
donatien 6:86e89a0369b9 201 char* schemePtr = (char*) url;
donatien 6:86e89a0369b9 202 char* hostPtr = (char*) strstr(url, "://");
donatien 6:86e89a0369b9 203 if(hostPtr == NULL)
donatien 6:86e89a0369b9 204 {
donatien 6:86e89a0369b9 205 WARN("Could not find host");
donatien 6:86e89a0369b9 206 return -1; //URL is invalid
donatien 6:86e89a0369b9 207 }
donatien 6:86e89a0369b9 208
donatien 6:86e89a0369b9 209 if( maxSchemeLen < hostPtr - schemePtr + 1 ) //including NULL-terminating char
donatien 6:86e89a0369b9 210 {
donatien 6:86e89a0369b9 211 WARN("Scheme str is too small (%d >= %d)", maxSchemeLen, hostPtr - schemePtr + 1);
donatien 6:86e89a0369b9 212 return -1;
donatien 6:86e89a0369b9 213 }
donatien 6:86e89a0369b9 214 memcpy(scheme, schemePtr, hostPtr - schemePtr);
donatien 6:86e89a0369b9 215 scheme[hostPtr - schemePtr] = '\0';
donatien 6:86e89a0369b9 216
donatien 6:86e89a0369b9 217 hostPtr+=3;
donatien 6:86e89a0369b9 218
donatien 6:86e89a0369b9 219 size_t hostLen = 0;
samux 3:9589afa4712e 220
donatien 6:86e89a0369b9 221 char* portPtr = strchr(hostPtr, ':');
donatien 6:86e89a0369b9 222 if( portPtr != NULL )
donatien 6:86e89a0369b9 223 {
donatien 6:86e89a0369b9 224 hostLen = portPtr - hostPtr;
donatien 6:86e89a0369b9 225 portPtr++;
donatien 6:86e89a0369b9 226 if( sscanf(portPtr, "%hu", port) != 1)
donatien 6:86e89a0369b9 227 {
donatien 6:86e89a0369b9 228 WARN("Could not find port");
donatien 6:86e89a0369b9 229 return -1;
donatien 6:86e89a0369b9 230 }
donatien 6:86e89a0369b9 231 }
donatien 6:86e89a0369b9 232 else
donatien 6:86e89a0369b9 233 {
donatien 6:86e89a0369b9 234 *port=0;
donatien 6:86e89a0369b9 235 }
donatien 6:86e89a0369b9 236 char* pathPtr = strchr(hostPtr, '/');
donatien 6:86e89a0369b9 237 if( hostLen == 0 )
donatien 6:86e89a0369b9 238 {
donatien 6:86e89a0369b9 239 hostLen = pathPtr - hostPtr;
donatien 6:86e89a0369b9 240 }
samux 3:9589afa4712e 241
donatien 6:86e89a0369b9 242 if( maxHostLen < hostLen + 1 ) //including NULL-terminating char
donatien 6:86e89a0369b9 243 {
donatien 6:86e89a0369b9 244 WARN("Host str is too small (%d >= %d)", maxHostLen, hostLen + 1);
donatien 6:86e89a0369b9 245 return -1;
donatien 6:86e89a0369b9 246 }
donatien 6:86e89a0369b9 247 memcpy(host, hostPtr, hostLen);
donatien 6:86e89a0369b9 248 host[hostLen] = '\0';
samux 3:9589afa4712e 249
donatien 6:86e89a0369b9 250 size_t pathLen;
donatien 6:86e89a0369b9 251 char* fragmentPtr = strchr(hostPtr, '#');
donatien 6:86e89a0369b9 252 if(fragmentPtr != NULL)
donatien 6:86e89a0369b9 253 {
donatien 6:86e89a0369b9 254 pathLen = fragmentPtr - pathPtr;
donatien 6:86e89a0369b9 255 }
donatien 6:86e89a0369b9 256 else
donatien 6:86e89a0369b9 257 {
donatien 6:86e89a0369b9 258 pathLen = strlen(pathPtr);
donatien 6:86e89a0369b9 259 }
donatien 6:86e89a0369b9 260
donatien 6:86e89a0369b9 261 if( maxPathLen < pathLen + 1 ) //including NULL-terminating char
donatien 6:86e89a0369b9 262 {
donatien 6:86e89a0369b9 263 WARN("Path str is too small (%d >= %d)", maxPathLen, pathLen + 1);
donatien 6:86e89a0369b9 264 return -1;
donatien 6:86e89a0369b9 265 }
donatien 6:86e89a0369b9 266 memcpy(path, pathPtr, pathLen);
donatien 6:86e89a0369b9 267 path[pathLen] = '\0';
donatien 6:86e89a0369b9 268
donatien 6:86e89a0369b9 269 return 0;
samux 3:9589afa4712e 270 }
samux 3:9589afa4712e 271
samux 3:9589afa4712e 272
samux 3:9589afa4712e 273 bool Websocket::connect() {
samux 3:9589afa4712e 274 char cmd[200];
samux 3:9589afa4712e 275
donatien 6:86e89a0369b9 276 while (socket.connect(host, port) < 0) {
donatien 6:86e89a0369b9 277 ERR("Unable to connect to (%s) on port (%d)", host, port);
mauricioaschmitz 8:c9da00db9d33 278 Thread::wait(200);
donatien 6:86e89a0369b9 279 return false;
samux 3:9589afa4712e 280 }
samux 3:9589afa4712e 281
samux 3:9589afa4712e 282 // sent http header to upgrade to the ws protocol
donatien 6:86e89a0369b9 283 sprintf(cmd, "GET %s HTTP/1.1\r\n", path);
samux 3:9589afa4712e 284 write(cmd, strlen(cmd));
donatien 6:86e89a0369b9 285
donatien 6:86e89a0369b9 286 sprintf(cmd, "Host: %s:%d\r\n", host, port);
samux 3:9589afa4712e 287 write(cmd, strlen(cmd));
samux 3:9589afa4712e 288
samux 3:9589afa4712e 289 sprintf(cmd, "Upgrade: WebSocket\r\n");
samux 3:9589afa4712e 290 write(cmd, strlen(cmd));
samux 3:9589afa4712e 291
samux 3:9589afa4712e 292 sprintf(cmd, "Connection: Upgrade\r\n");
samux 3:9589afa4712e 293 write(cmd, strlen(cmd));
samux 3:9589afa4712e 294
samux 3:9589afa4712e 295 sprintf(cmd, "Sec-WebSocket-Key: L159VM0TWUzyDxwJEIEzjw==\r\n");
samux 3:9589afa4712e 296 write(cmd, strlen(cmd));
samux 3:9589afa4712e 297
samux 3:9589afa4712e 298 sprintf(cmd, "Sec-WebSocket-Version: 13\r\n\r\n");
samux 3:9589afa4712e 299 int ret = write(cmd, strlen(cmd));
mauricioaschmitz 8:c9da00db9d33 300 if ((unsigned)ret != strlen(cmd)) {
samux 3:9589afa4712e 301 close();
samux 3:9589afa4712e 302 ERR("Could not send request");
samux 3:9589afa4712e 303 return false;
samux 3:9589afa4712e 304 }
mauricioaschmitz 8:c9da00db9d33 305
samux 3:9589afa4712e 306 ret = read(cmd, 200, 100);
samux 3:9589afa4712e 307 if (ret < 0) {
samux 3:9589afa4712e 308 close();
samux 3:9589afa4712e 309 ERR("Could not receive answer\r\n");
samux 3:9589afa4712e 310 return false;
samux 3:9589afa4712e 311 }
samux 3:9589afa4712e 312 cmd[ret] = '\0';
samux 3:9589afa4712e 313 DBG("recv: %s\r\n", cmd);
samux 3:9589afa4712e 314
samux 3:9589afa4712e 315 if ( strstr(cmd, "DdLWT/1JcX+nQFHebYP+rqEx5xI=") == NULL ) {
samux 3:9589afa4712e 316 ERR("Wrong answer from server, got \"%s\" instead\r\n", cmd);
samux 3:9589afa4712e 317 do {
samux 3:9589afa4712e 318 ret = read(cmd, 200, 100);
samux 3:9589afa4712e 319 if (ret < 0) {
samux 3:9589afa4712e 320 ERR("Could not receive answer\r\n");
samux 3:9589afa4712e 321 return false;
samux 3:9589afa4712e 322 }
samux 3:9589afa4712e 323 cmd[ret] = '\0';
samux 3:9589afa4712e 324 printf("%s",cmd);
samux 3:9589afa4712e 325 } while (ret > 0);
samux 3:9589afa4712e 326 close();
samux 3:9589afa4712e 327 return false;
samux 3:9589afa4712e 328 }
mauricioaschmitz 8:c9da00db9d33 329
mauricioaschmitz 8:c9da00db9d33 330 //INFO("\r\nhost: %s\r\npath: %s\r\nport: %d\r\n\r\n", host, path, port);
samux 3:9589afa4712e 331 return true;
samux 3:9589afa4712e 332 }
samux 3:9589afa4712e 333
samux 4:466f90b7849a 334 int Websocket::sendLength(uint32_t len, char * msg) {
samux 3:9589afa4712e 335
samux 3:9589afa4712e 336 if (len < 126) {
samux 4:466f90b7849a 337 msg[0] = len | (1<<7);
samux 3:9589afa4712e 338 return 1;
samux 3:9589afa4712e 339 } else if (len < 65535) {
samux 4:466f90b7849a 340 msg[0] = 126 | (1<<7);
samux 4:466f90b7849a 341 msg[1] = (len >> 8) & 0xff;
samux 4:466f90b7849a 342 msg[2] = len & 0xff;
samux 3:9589afa4712e 343 return 3;
samux 3:9589afa4712e 344 } else {
samux 4:466f90b7849a 345 msg[0] = 127 | (1<<7);
samux 3:9589afa4712e 346 for (int i = 0; i < 8; i++) {
samux 4:466f90b7849a 347 msg[i+1] = (len >> i*8) & 0xff;
samux 3:9589afa4712e 348 }
samux 3:9589afa4712e 349 return 9;
samux 3:9589afa4712e 350 }
samux 3:9589afa4712e 351 }
samux 3:9589afa4712e 352
samux 3:9589afa4712e 353 int Websocket::readChar(char * pC, bool block) {
samux 3:9589afa4712e 354 return read(pC, 1, 1);
samux 3:9589afa4712e 355 }
samux 3:9589afa4712e 356
samux 4:466f90b7849a 357 int Websocket::sendOpcode(uint8_t opcode, char * msg) {
samux 4:466f90b7849a 358 msg[0] = 0x80 | (opcode & 0x0f);
samux 4:466f90b7849a 359 return 1;
samux 3:9589afa4712e 360 }
samux 3:9589afa4712e 361
samux 4:466f90b7849a 362 int Websocket::sendMask(char * msg) {
samux 3:9589afa4712e 363 for (int i = 0; i < 4; i++) {
samux 4:466f90b7849a 364 msg[i] = 0;
samux 3:9589afa4712e 365 }
samux 3:9589afa4712e 366 return 4;
samux 3:9589afa4712e 367 }
samux 3:9589afa4712e 368
samux 3:9589afa4712e 369 int Websocket::send(char * str) {
samux 4:466f90b7849a 370 char msg[strlen(str) + 15];
samux 4:466f90b7849a 371 int idx = 0;
samux 4:466f90b7849a 372 idx = sendOpcode(0x01, msg);
samux 4:466f90b7849a 373 idx += sendLength(strlen(str), msg + idx);
samux 4:466f90b7849a 374 idx += sendMask(msg + idx);
samux 4:466f90b7849a 375 memcpy(msg+idx, str, strlen(str));
samux 4:466f90b7849a 376 int res = write(msg, idx + strlen(str));
samux 3:9589afa4712e 377 return res;
samux 3:9589afa4712e 378 }
samux 3:9589afa4712e 379
samux 3:9589afa4712e 380
samux 3:9589afa4712e 381 bool Websocket::read(char * message) {
samux 3:9589afa4712e 382 int i = 0;
samux 3:9589afa4712e 383 uint32_t len_msg;
samux 3:9589afa4712e 384 char opcode = 0;
samux 3:9589afa4712e 385 char c;
samux 3:9589afa4712e 386 char mask[4] = {0, 0, 0, 0};
samux 3:9589afa4712e 387 bool is_masked = false;
samux 3:9589afa4712e 388 Timer tmr;
samux 3:9589afa4712e 389
samux 3:9589afa4712e 390 // read the opcode
samux 3:9589afa4712e 391 tmr.start();
samux 3:9589afa4712e 392 while (true) {
samux 3:9589afa4712e 393 if (tmr.read() > 3) {
samux 3:9589afa4712e 394 DBG("timeout ws\r\n");
samux 3:9589afa4712e 395 return false;
samux 3:9589afa4712e 396 }
donatien 5:bb09d7a6c92f 397
donatien 5:bb09d7a6c92f 398 if(!socket.is_connected())
donatien 5:bb09d7a6c92f 399 {
donatien 5:bb09d7a6c92f 400 WARN("Connection was closed by server");
donatien 5:bb09d7a6c92f 401 return false;
donatien 5:bb09d7a6c92f 402 }
samux 3:9589afa4712e 403
samux 3:9589afa4712e 404 socket.set_blocking(false, 1);
samux 3:9589afa4712e 405 if (socket.receive(&opcode, 1) != 1) {
samux 3:9589afa4712e 406 socket.set_blocking(false, 2000);
samux 3:9589afa4712e 407 return false;
samux 3:9589afa4712e 408 }
samux 3:9589afa4712e 409
samux 3:9589afa4712e 410 socket.set_blocking(false, 2000);
samux 3:9589afa4712e 411
samux 3:9589afa4712e 412 if (opcode == 0x81)
samux 3:9589afa4712e 413 break;
samux 3:9589afa4712e 414 }
samux 3:9589afa4712e 415 DBG("opcode: 0x%X\r\n", opcode);
samux 3:9589afa4712e 416
samux 3:9589afa4712e 417 readChar(&c);
samux 3:9589afa4712e 418 len_msg = c & 0x7f;
samux 3:9589afa4712e 419 is_masked = c & 0x80;
samux 3:9589afa4712e 420 if (len_msg == 126) {
samux 3:9589afa4712e 421 readChar(&c);
samux 3:9589afa4712e 422 len_msg = c << 8;
samux 3:9589afa4712e 423 readChar(&c);
samux 3:9589afa4712e 424 len_msg += c;
samux 3:9589afa4712e 425 } else if (len_msg == 127) {
samux 3:9589afa4712e 426 len_msg = 0;
samux 3:9589afa4712e 427 for (int i = 0; i < 8; i++) {
samux 3:9589afa4712e 428 readChar(&c);
samux 3:9589afa4712e 429 len_msg += (c << (7-i)*8);
samux 3:9589afa4712e 430 }
samux 3:9589afa4712e 431 }
samux 3:9589afa4712e 432
samux 3:9589afa4712e 433 if (len_msg == 0) {
samux 3:9589afa4712e 434 return false;
samux 3:9589afa4712e 435 }
samux 3:9589afa4712e 436 DBG("length: %d\r\n", len_msg);
samux 3:9589afa4712e 437
samux 3:9589afa4712e 438 if (is_masked) {
samux 3:9589afa4712e 439 for (i = 0; i < 4; i++)
samux 3:9589afa4712e 440 readChar(&c);
samux 3:9589afa4712e 441 mask[i] = c;
samux 3:9589afa4712e 442 }
samux 3:9589afa4712e 443
samux 3:9589afa4712e 444 int nb = read(message, len_msg, len_msg);
samux 3:9589afa4712e 445 if (nb != len_msg)
samux 3:9589afa4712e 446 return false;
samux 3:9589afa4712e 447
mauricioaschmitz 8:c9da00db9d33 448 for (i = 0; (unsigned)i < len_msg; i++) {
samux 3:9589afa4712e 449 message[i] = message[i] ^ mask[i % 4];
samux 3:9589afa4712e 450 }
samux 3:9589afa4712e 451
samux 3:9589afa4712e 452 message[len_msg] = '\0';
samux 3:9589afa4712e 453
samux 3:9589afa4712e 454 return true;
samux 3:9589afa4712e 455 }
samux 3:9589afa4712e 456
samux 3:9589afa4712e 457 bool Websocket::close() {
mauricioaschmitz 8:c9da00db9d33 458 //if (!is_connected())
mauricioaschmitz 8:c9da00db9d33 459 //return false;
samux 3:9589afa4712e 460
mauricioaschmitz 8:c9da00db9d33 461 int ret = socket.close(true);
samux 3:9589afa4712e 462 if (ret < 0) {
samux 3:9589afa4712e 463 ERR("Could not disconnect");
samux 3:9589afa4712e 464 return false;
samux 3:9589afa4712e 465 }
samux 3:9589afa4712e 466 return true;
samux 3:9589afa4712e 467 }
samux 3:9589afa4712e 468
samux 3:9589afa4712e 469 bool Websocket::is_connected() {
mauricioaschmitz 8:c9da00db9d33 470 isConect = socket.is_connected();
samux 3:9589afa4712e 471 return socket.is_connected();
samux 3:9589afa4712e 472 }
samux 3:9589afa4712e 473
donatien 6:86e89a0369b9 474 char* Websocket::getPath() {
samux 3:9589afa4712e 475 return path;
samux 3:9589afa4712e 476 }
samux 3:9589afa4712e 477
samux 3:9589afa4712e 478 int Websocket::write(char * str, int len) {
samux 3:9589afa4712e 479 int res = 0, idx = 0;
samux 3:9589afa4712e 480
samux 3:9589afa4712e 481 for (int j = 0; j < MAX_TRY_WRITE; j++) {
donatien 5:bb09d7a6c92f 482
donatien 5:bb09d7a6c92f 483 if(!socket.is_connected())
donatien 5:bb09d7a6c92f 484 {
donatien 5:bb09d7a6c92f 485 WARN("Connection was closed by server");
donatien 5:bb09d7a6c92f 486 break;
donatien 5:bb09d7a6c92f 487 }
samux 3:9589afa4712e 488
samux 3:9589afa4712e 489 if ((res = socket.send_all(str + idx, len - idx)) == -1)
samux 3:9589afa4712e 490 continue;
samux 3:9589afa4712e 491
samux 3:9589afa4712e 492 idx += res;
samux 3:9589afa4712e 493
samux 3:9589afa4712e 494 if (idx == len)
samux 3:9589afa4712e 495 return len;
samux 3:9589afa4712e 496 }
samux 3:9589afa4712e 497
samux 3:9589afa4712e 498 return (idx == 0) ? -1 : idx;
samux 3:9589afa4712e 499 }
samux 3:9589afa4712e 500
samux 3:9589afa4712e 501 int Websocket::read(char * str, int len, int min_len) {
samux 3:9589afa4712e 502 int res = 0, idx = 0;
samux 3:9589afa4712e 503
samux 3:9589afa4712e 504 for (int j = 0; j < MAX_TRY_WRITE; j++) {
samux 3:9589afa4712e 505
samux 3:9589afa4712e 506 if ((res = socket.receive_all(str + idx, len - idx)) == -1)
samux 3:9589afa4712e 507 continue;
samux 3:9589afa4712e 508
samux 3:9589afa4712e 509 idx += res;
samux 3:9589afa4712e 510
samux 3:9589afa4712e 511 if (idx == len || (min_len != -1 && idx > min_len))
samux 3:9589afa4712e 512 return idx;
samux 3:9589afa4712e 513 }
samux 3:9589afa4712e 514
samux 3:9589afa4712e 515 return (idx == 0) ? -1 : idx;
samux 3:9589afa4712e 516 }