Firebase cloud function POST HTTPS Request from ESP8266 - firebase

Question

I want to connect to an url of a cloud function but isn´t working. someone can see the error? I´m working with an ESP8266 from arduino IDE. I try sending a POST request by postman and it function perfectly, I don´t understan what is the problem with the conection, i always try to connect with out the https and only with http and again in the esp8266 didn´t wotk but in postman does works fine, I do not understant why is this problem
#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
const char* ssid = "My wifi";
const char* password = "My Password";
const char* host = "https://us-central1-sensores4bad6.cloudfunctions.net/actualizar";
void setup() {
Serial.begin(9600);
delay(10);
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
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);
WiFiClientSecure client;
const int httpPort = 443;
if (!client.connect(host, httpPort)) {
Serial.println("connection failed");
return;
}
client.print(String("POST ") + host + " HTTP/1.1\r\n" +
"Host: " + host + "\r\n" +
"Connection: close\r\n\r\n");
unsigned long timeout = millis();
while (client.available() == 0) {
if (millis() - timeout > 5000) {
Serial.println(">>> Client Timeout !");
client.stop();
return;
}
}
while (client.available()) {
String line = client.readStringUntil('\r');
Serial.print(line);
}
Serial.println();
Serial.println("closing connection");
}

Answer 1

Try removing the s in https. So:
const char* host = "http://us-central1-sensores4bad6.cloudfunctions.net/actualizar";
instead of
const char* host = "https://us-central1-sensores4bad6.cloudfunctions.net/actualizar";