How to issue GET request to Google from an ESP32? (can't get it to work)

Question

I´m trying to get an ESP32 to send GET requests to Google, but all I get is a -1 error response from the server. I'm using the Arduino IDE for this.

Based on that I will then need to modify it so that it sends a GET to our company's application running on App Engine.

if(WiFi.status()== WL_CONNECTED){
  HTTPClient http;

        
  // Domain name with URL path or IP address with path
  http.begin("google.com");
  
  // Send HTTP GET request
  int httpResponseCode = http.GET();
  
  if (httpResponseCode>0) {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
    String payload = http.getString();
    Serial.println(payload);
  }
  else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
  }
  // Free resources
  http.end();
}
else {
  Serial.println("WiFi Disconnected");
}

Answer 1

如果您阅读示例代码<\/a>，您会注意到它将地址指定为绝对 URI ( http:\/\/example.com\/index.html<\/code> )，而不仅仅是域名 ( example.com<\/code> )。

        http.begin("http://example.com/index.html"); //HTTP