void ThingspeakClient::getLastChannelItem(String channelId, String readApiKey) { JsonStreamingParser parser; parser.setListener(this); WiFiClient client; // http://api.thingspeak.com/channels/CHANNEL_ID/feeds.json?results=2&api_key=API_KEY const char host[] = "api.thingspeak.com"; String url = "/channels/" + channelId +"/feeds.json?results=1&api_key=" + readApiKey; const int httpPort = 80; if (!client.connect(host, httpPort)) { Serial.println("connection failed"); return; } Serial.print("Requesting URL: "); Serial.println(url); // This will send the request to the server client.print(String("GET ") + url + " HTTP/1.1\r\n" + "Host: " + host + "\r\n" + "Connection: close\r\n\r\n"); int retryCounter = 0; while(!client.available()) { Serial.println("."); delay(1000); retryCounter++; if (retryCounter > 10) { return; } } int pos = 0; boolean isBody = false; char c; int size = 0; client.setNoDelay(false); while(client.connected()) { while((size = client.available()) > 0) { c = client.read(); if (c == '{' || c == '[') { isBody = true; } if (isBody) { parser.parse(c); } } } }
void TimeClient::updateTime() { WiFiClient client; const int httpPort = 80; if (!client.connect("google.com", httpPort)) { Serial.println("connection failed"); return; } // This will send the request to the server client.print(String("GET / HTTP/1.1\r\n") + String("Host: google.com\r\n") + String("Connection: close\r\n\r\n")); int repeatCounter = 0; while(!client.available() && repeatCounter < 10) { delay(1000); Serial.println("."); repeatCounter++; } String line; int size = 0; client.setNoDelay(false); while(client.connected()) { while((size = client.available()) > 0) { line = client.readStringUntil('\n'); line.toUpperCase(); // example: // date: Thu, 19 Nov 2015 20:25:40 GMT if (line.startsWith("DATE: ")) { Serial.println(line.substring(23, 25) + ":" + line.substring(26, 28) + ":" +line.substring(29, 31)); int parsedHours = line.substring(23, 25).toInt(); int parsedMinutes = line.substring(26, 28).toInt(); int parsedSeconds = line.substring(29, 31).toInt(); Serial.println(String(parsedHours) + ":" + String(parsedMinutes) + ":" + String(parsedSeconds)); localEpoc = (parsedHours * 60 * 60 + parsedMinutes * 60 + parsedSeconds); Serial.println(localEpoc); localMillisAtUpdate = millis(); } } } }
void WundergroundClient::doUpdate(String url) { JsonStreamingParser parser; parser.setListener(this); WiFiClient client; const int httpPort = 80; if (!client.connect("api.wunderground.com", httpPort)) { Serial.println("connection failed"); return; } Serial.print("Requesting URL: "); Serial.println(url); // This will send the request to the server client.print(String("GET ") + url + " HTTP/1.1\r\n" + "Host: api.wunderground.com\r\n" + "Connection: close\r\n\r\n"); int retryCounter = 0; while(!client.available()) { delay(1000); retryCounter++; if (retryCounter > 10) { return; } } int pos = 0; boolean isBody = false; char c; int size = 0; client.setNoDelay(false); while(client.connected()) { while((size = client.available()) > 0) { c = client.read(); if (c == '{' || c == '[') { isBody = true; } if (isBody) { parser.parse(c); } } } }
t_httpUpdate_return ESP8266HTTPUpdate::update(const char * host, uint16_t port, const char * url, const char * current_version) { t_httpUpdate_return ret = HTTP_UPDATE_FAILED; WiFiClient tcp; DEBUG_HTTP_UPDATE("[httpUpdate] connected to %s:%u %s .... ", host, port, url); if(!tcp.connect(host, port)) { DEBUG_HTTP_UPDATE("failed.\n"); return ret; } DEBUG_HTTP_UPDATE("ok.\n"); // set Timeout for readBytesUntil and readStringUntil tcp.setTimeout(2000); tcp.setNoDelay(true); String req = "GET "; req += url; req += " HTTP/1.1\r\n" "Host: "; req += host; req += "\r\n" "Connection: close\r\n" "User-Agent: ESP8266-http-Update\r\n" "x-ESP8266-STA-MAC: "; req += WiFi.macAddress(); req += "\r\n" "x-ESP8266-AP-MAC: "; req += WiFi.softAPmacAddress(); req += "\r\n" "x-ESP8266-free-space: "; req += ESP.getFreeSketchSpace(); req += "\r\n" "x-ESP8266-sketch-size: "; req += ESP.getSketchSize(); req += "\r\n" "x-ESP8266-chip-size: "; req += ESP.getFlashChipRealSize(); req += "\r\n" "x-ESP8266-sdk-version: "; req += ESP.getSdkVersion(); if(current_version[0] != 0x00) { req += "\r\n" "x-ESP8266-version: "; req += current_version; } req += "\r\n" "\r\n"; tcp.write(req.c_str(), req.length()); uint32_t code = 0; size_t len = 0; while(true) { String headerLine = tcp.readStringUntil('\n'); headerLine.trim(); // remove \r if(headerLine.length() > 0) { DEBUG_HTTP_UPDATE("[httpUpdate][Header] RX: %s\n", headerLine.c_str()); if(headerLine.startsWith("HTTP/1.")) { // 9 = lenght of "HTTP/1.x " code = headerLine.substring(9, headerLine.indexOf(' ', 9)).toInt(); } else if(headerLine.startsWith("Content-Length: ")) { // 16 = lenght of "Content-Length: " len = headerLine.substring(16).toInt(); } } else { break; } } DEBUG_HTTP_UPDATE("[httpUpdate] Header read fin.\n"); DEBUG_HTTP_UPDATE("[httpUpdate] Server header:\n"); DEBUG_HTTP_UPDATE("[httpUpdate] - code: %d\n", code); DEBUG_HTTP_UPDATE("[httpUpdate] - len: %d\n", len); DEBUG_HTTP_UPDATE("[httpUpdate] ESP8266 info:\n"); DEBUG_HTTP_UPDATE("[httpUpdate] - free Space: %d\n", ESP.getFreeSketchSpace()); DEBUG_HTTP_UPDATE("[httpUpdate] - current Sketch Size: %d\n", ESP.getSketchSize()); if(current_version[0] != 0x00) { DEBUG_HTTP_UPDATE("[httpUpdate] - current version: %s\n", current_version); } switch(code) { case 200: ///< OK (Start Update) if(len > 0) { if(len > ESP.getFreeSketchSpace()) { ret = HTTP_UPDATE_FAILED; DEBUG_HTTP_UPDATE("[httpUpdate] FreeSketchSpace to low (%d) needed: %d\n", ESP.getFreeSketchSpace(), len); } else { WiFiUDP::stopAll(); WiFiClient::stopAllExcept(&tcp); delay(100); if(ESP.updateSketch(tcp, len, false, false)) { ret = HTTP_UPDATE_OK; DEBUG_HTTP_UPDATE("[httpUpdate] Update ok\n"); tcp.stop(); ESP.restart(); } else { ret = HTTP_UPDATE_FAILED; DEBUG_HTTP_UPDATE("[httpUpdate] Update failed\n"); } } } else { ret = HTTP_UPDATE_FAILED; DEBUG_HTTP_UPDATE("[httpUpdate] Content-Length is 0?!\n"); } break; case 304: ///< Not Modified (No updates) ret = HTTP_UPDATE_NO_UPDATES; break; case 403: ///< Forbidden // todo handle login default: ret = HTTP_UPDATE_FAILED; DEBUG_HTTP_UPDATE("[httpUpdate] Code is (%d)\n", code); break; } return ret; }