ESP32 use http post to run API Blynk

Solved
,
1

Hi everybody.
I want to use 1 ESP32 as an intermediary device, connect to push buttons, each button when used will post the url line of Blynk API, control 1 device connecting Blynk 2.0
The problem is, I’m not a programmer, but just an IOT Blynk practitioner, so I don’t know how to code.
When I apply the below line of code, an error is generated and the device cannot be controlled. I hope the experts will research and rewrite the code accordingly.
Thank you very much.

#include <WiFi.h>
#include <HTTPClient.h>

static uint8_t SwitchPin1 = 13;  //D13
  
const char* ssid = "HIEU VAI  THANH";
const char* password =  "xxxxxxxxxxxxx";
  
void setup() {
  
  Serial.begin(115200);
  delay(4000);   //Delay needed before calling the WiFi.begin

  pinMode(SwitchPin1, INPUT_PULLUP);


  
  WiFi.begin(ssid, password); 
  
  while (WiFi.status() != WL_CONNECTED) { //Check for the connection
    delay(1000);
    Serial.println("Connecting to WiFi..");
  }
  
  Serial.println("Connected to the WiFi network");
  
}
  
void loop() {
if (digitalRead(SwitchPin1) == HIGH) {
 if(WiFi.status()== WL_CONNECTED){   //Check WiFi connection status
  
   HTTPClient http;   
  
   http.begin("https://blynk.cloud/external/api/update");  //Specify destination for HTTP request

   
   http.addHeader("Content-Type", "text/plain");             //Specify content-type header
  
   int httpResponseCode = http.POST("token=dMUNVOF6rbo-ZVNm4E8G9CbvpI1qAE8U&v12=1";   //Send the actual POST request
  
   if(httpResponseCode>0){
  
    String response = http.getString();                       //Get the response to the request
  
    Serial.println("httpResponseCode  =  ");   //Print return code
    Serial.println(httpResponseCode);   //Print return code
    Serial.println(response);           //Print request answer
  
   }else{
  
    Serial.print("Error on sending POST: ");
    Serial.println(httpResponseCode);
  
   }
  
   http.end();  //Free resources
  
 }else{
  
    Serial.println("Error in WiFi connection");   
  
 }
  
  delay(10000);  //Send a request every 10 seconds
  
}
}

ERROR

22:32:10.581 -> Connecting to WiFi..
22:32:11.612 -> Connecting to WiFi..
22:32:12.588 -> Connecting to WiFi..
22:32:12.588 -> Connected to the WiFi network
22:32:13.703 -> httpResponseCode  =  
22:32:13.703 -> 400
22:32:13.703 -> {"error":{"message":"No token provided."}}
22:32:25.153 -> httpResponseCode  =  
22:32:25.153 -> 400
22:32:25.153 -> {"error":{"message":"No token provided."}}
2

I fixed the code error, and was able to use the http get function to run blynk’s API URL.

Thank for your watching.

#include <WiFi.h>
#include <HTTPClient.h>

static uint8_t SwitchPin1 = 13;  //D13
  
const char* ssid = "HIEU VAI  THANH";
const char* password =  "zzzzzzzzzzzz";
  
void setup() {
  
  Serial.begin(115200);
  delay(4000);   //Delay needed before calling the WiFi.begin

  pinMode(SwitchPin1, INPUT_PULLUP);


  
  WiFi.begin(ssid, password); 
  
  while (WiFi.status() != WL_CONNECTED) { //Check for the connection
    delay(1000);
    Serial.println("Connecting to WiFi..");
  }
  
  Serial.println("Connected to the WiFi network");
  
}
  
void loop() {
if (digitalRead(SwitchPin1) == HIGH) {
 if(WiFi.status()== WL_CONNECTED){   //Check WiFi connection status
  
   HTTPClient http;   
  
   
  
   //http.begin("http://api.ipify.org/");  //Specify destination for HTTP request
   http.begin("https://blynk.cloud/external/api/update?token=dMUNV1F6rbo-ZVNm4E8G9CbvpIoqAE8U&v12=1");  //Specify destination for HTTP request

   
   http.addHeader("Content-Type", "text/plain");             //Specify content-type header

    int httpResponseCode = http.GET();
    //int httpResponseCode = http.POST("");
  
   if(httpResponseCode>0){
  
    String response = http.getString();                       //Get the response to the request
  
    Serial.print("httpResponseCode  =  ");   //Print return code
    Serial.println(httpResponseCode);   //Print return code
    Serial.println(response);           //Print request answer
  
   }else{
  
    Serial.print("Error on sending POST: ");
    Serial.println(httpResponseCode);
  
   }
  
   http.end();  //Free resources
  
 }else{
  
    Serial.println("Error in WiFi connection");   
  
 }
  
  delay(10000);  //Send a request every 10 seconds
  
}
}

Result

23:04:27.343 -> 
23:04:38.352 -> httpResponseCode  =  200
23:04:38.352 -> 
23:05:40.397 -> Connecting to WiFi..
23:05:41.385 -> Connecting to WiFi..
23:05:42.376 -> Connecting to WiFi..
23:05:42.376 -> Connected to the WiFi network