Making simple http request to get data on blynk 2.0

Solved
3

Thank you for your prompt response.
I used your code above for Edgent, and changed the token and url.
However the response i get is still -5.

Sending 11.80 to pin V2
Error code: -5 <-----------------------------------Response time = 98 milliseconds

Sending 12.10 to pin V2
Error code: -5 <-----------------------------------Response time = 97 milliseconds

Sending 12.40 to pin V2
Error code: -5 <-----------------------------------Response time = 99 milliseconds

Here is the code

// Fill-in information from your Blynk Template here
#define BLYNK_TEMPLATE_ID "MYID"
#define BLYNK_DEVICE_NAME "RELAY"

#define APP_DEBUG
#define BLYNK_WIFI_SSID  "mywifi"
#define BLYNK_WIFI_PASS  "mypass"

#define BLYNK_PRINT Serial
//#define BLYNK_DEBUG

// Uncomment your board, or configure a custom board in Settings.h
//#define USE_SPARKFUN_BLYNK_BOARD
#define USE_NODE_MCU_BOARD
//#define USE_WITTY_CLOUD_BOARD
//#define USE_WEMOS_D1_MINI

#include "BlynkEdgent.h"
#include <ESP8266HTTPClient.h>

String server_name = "https://blr1.blynk.cloud/external/api/"; // <<< SEE COMMENTS

String bridge_token_1 = "mytoken"; // token for the receiving device

float temperature = 10.0; // Used for testing, will be incremented in the "push_some_data" function

BlynkTimer timer;


void setup()
{
  Serial.begin(115200);
  delay(100);

  BlynkEdgent.begin();
  timer.setInterval(10000L, push_some_data);  
}

void loop()
{
  BlynkEdgent.run();
  timer.run();
}

void push_some_data()
{
  api_bridge(bridge_token_1,2,temperature); // Token for receiving device, virtual pin number, value to send

  // Increment the temperature value to simulate changing data...  
  temperature = temperature + 0.3;
  if (temperature >= 50)
  {
    temperature = 10.0;
  }
}


void api_bridge(String token, int virtual_pin, float value_to_send)
{
  WiFiClient my_wifi_client;
  HTTPClient http;

  String server_path = server_name + "update?token=" + token + "&pin=v" + String(virtual_pin) + "&value=" +  float(value_to_send);

  // Your Domain name with URL path or IP address with path
  http.begin(my_wifi_client, server_path.c_str());
  
  // Send HTTP GET request
  Serial.print("Sending ");
  Serial.print(value_to_send);
  Serial.print(" to pin V");
  Serial.println(virtual_pin); 
  
  long request_time = millis();
  int httpResponseCode = http.GET();
  
  if (httpResponseCode>0)
  {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
    String payload = http.getString();
  }
  else
  {
    Serial.print("Error code: ");
    Serial.print(httpResponseCode);
    Serial.print(" <-----------------------------------");    
  }
 
  Serial.print("Response time = ");
  Serial.print(millis() - request_time);
  Serial.println(" milliseconds");
  Serial.println(); 
  
  // Free resources
  http.end();
}