ESP32 Forum

Posted: **Wed Oct 19, 2022 11:47 pm**

I have an EmonCMS running on my Raspberry Pi on my local network which collects data from various sensors based on the ESP processors. The EmonCMS allows me to store and display the data in many ways.

I can retrieve data for id=1 using a web browser:

Code: [Select all] [Expand/Collapse]

http://192.168.11.235/feed/value.json?id=1

GeSHi © Codebox Plus Extension

And I get the results for id 1.

Or, I can retrieve data for id=2 using a web browser:

Code: [Select all] [Expand/Collapse]

http://192.168.11.235/feed/value.json?id=2

And I get the results for id 2.

However using the ESP32 only when id=1 does it give me correct data (when I un-comment line 4 below)

But, if I un-comment line 5 (line 4 is commented out) then I get a 406 error:
{"success":false,"message":"406 Not Acceptable. Route not found"}

Now this is just my example, I have id's that go up to 46 and they all work in a web browser but only id=1 works with the code below running on my ESP.

Does anyone know what my problem might be?

Code: [Select all] [Expand/Collapse]

void loop() {
   if ((WiFi.status() == WL_CONNECTED)) { //Check the current connection status
     HTTPClient http;
     //http.begin("http://192.168.11.235/feed/value.json?id=1");   // THIS ONE WORKS
     //http.begin("http://192.168.11.235/feed/value.json?id=2");     // THIS ONE FAILS 
     int httpCode = http.GET();                                    //  get 406 Not Acceptable. Route not found"  
     if (httpCode > 0) { //Check for the returning code
         String payload = http.getString();
        Serial.println(httpCode);         // 200 which is for OK response
        Serial.println(payload);            // data
      }
     else {
      Serial.println("Error on HTTP request");
    }
     http.end(); //Free the resources
  }
   delay(10000);
 }

ESP32 Forum

Web Page Request Not Working Correctly

Web Page Request Not Working Correctly