title: ESP32/ESP8266 connect to localhost server using WiFi
body: <p>I have made a simple Node.js local server to receive POST requests from ESP32 and put it in a database. The server is working fine as I tested it using postman. The server is listening to port 127.0.0.1:3000. My problem is that <code>client.connect(host, port)</code> always returns false. I cannot connect to the client in order to make POST requests.</p>
  
  <pre><code>#include "Arduino.h"
  #include "Arduino.h"
  #include "WiFi.h"
  
  WiFiClient client;
  const IPAddress server(192,168,1,10);
  const int httpPort = 3000;
  const char* ssid = "******";
  const char* password =  "********";
  
  void setup() {
    Serial.begin(115200);
    Serial.println();
    Serial.println("Booted");
    Serial.println("Connecting to Wi-Fi");
    WiFi.begin (ssid, password);
    WiFi.mode(WIFI_STA);
    while (WiFi.status() != WL_CONNECTED) {
      Serial.print(".");
      delay(500);
      yield();
    }
    Serial.println("WiFi connected");
    if (client.connect(server,httpPort )) {
      Serial.println("Client Connected");
    } else {
      Serial.println("No Connection");
    }
  
  void loop() {
  }
  </code></pre>