ESP8266 Community Forum

- Sun Aug 30, 2015 9:25 am #27376 no. not google. Didn't you mean the WiFiClient example in arduino IDE?

/*
* This sketch sends data via HTTP GET requests to data.sparkfun.com service.
*
* You need to get streamId and privateKey at data.sparkfun.com and paste them
* below. Or just customize this script to talk to other HTTP servers.
*
*/

#include <ESP8266WiFi.h>

const char* ssid = "your-ssid";
const char* password = "your-password";

const char* host = "data.sparkfun.com";
const char* streamId = "....................";
const char* privateKey = "....................";

void setup() {
Serial.begin(115200);
delay(10);

// We start by connecting to a WiFi network

Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}

Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}

int value = 0;

void loop() {
delay(5000);
++value;

Serial.print("connecting to ");
Serial.println(host);

// Use WiFiClient class to create TCP connections
WiFiClient client;
const int httpPort = 80;
if (!client.connect(host, httpPort)) {
Serial.println("connection failed");
return;
}

// We now create a URI for the request
String url = "/input/";
url += streamId;
url += "?private_key=";
url += privateKey;
url += "&value=";
url += value;

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");
delay(10);

// Read all the lines of the reply from server and print them to Serial
while(client.available()){
String line = client.readStringUntil('\r');
Serial.print(line);
}

Serial.println();
Serial.println("closing connection");
}

I did not understand your reply.

Does your esp work with the google's url example?

- Sun Aug 30, 2015 9:37 am #27377 That example (sparkfun) is also ok.

Does it work for you?

- Sun Aug 30, 2015 10:34 am #27382 e.. I know it's fine. But not suitable for me. And the program on esp worked not well. So back to my question, where is the bug now in the program?

That example (sparkfun) is also ok.

Does it work for you?

- Mon Aug 31, 2015 9:26 pm #27514 Is the question depends of which sites been queries, is it works for somes and not for the others ?
This mean the problem rely on the delay(10) before testing for the response, because the reponse time can vary across sites. The solution is either to wait longer or to add some timeout code such as :

Code: Select all    client.print("GET /?format=json HTTP/1.1\r\nHost: api.ipify.org\r\n\r\n");
    int timeout = millis() + 5000;
    while(client.available() == 0) {
      if (timeout - millis() < 0) {
        Serial.println(">>> Client Timeout !");
        client.stop();
        return;
      }
    }
    int size;
    while((size = client.available()) > 0) {
      uint8_t* msg = (uint8_t*)malloc(size);
      size = client.read(msg,size);
      Serial.write(msg,size);
      free(msg);
    }