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;
}
