ESP8266 Community Forum

- Mon May 31, 2021 9:19 am #91522 I use Winsock in Visual Basic 6 which has ASCII string data. I want to send that data to ESP8266 with TCP/IP Protocol, also from ESP8266 to VB6. Is this possible? If so, how it works? I've tried using the http port but it still doesn't work. Thank you in advance

- Tue Jun 01, 2021 12:31 am #91523 it is a standard communication over a TCP/IP network

- Tue Jun 01, 2021 3:58 am #91530

it is a standard communication over a TCP/IP network

I used this code but it didn't work. Is there something wrong with this code? If I want to pass the string to a modulator-demodulator, how do I do that?

Code: Select all#include <ESP8266WiFi.h>

const char* ssid = "xxx"; //SSID Access Point
const char* password = "123"; //Password Access Point
const char* host = "http://192.168.100.1";

//Client-ESP8266 IP Address
IPAddress IP(192,168,100,200);
IPAddress NETMASK(255,255,255,0);
IPAddress NETWORK(192,168,100,1);
IPAddress DNS(192,168,100,1);

void setup() {
  Serial.begin(1200);
  delay(100);
 
   // Connecting to a WiFi network
  Serial.println();
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
 
  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());
}

void loop() {
   WiFiClient client;
   Serial.printf("\n[Connecting to %s ...", host);
  if (client.connect(host, 80))
  {   
      Serial.println("connected]");
      Serial.println("[Sending a request]");
      client.print(String("GET /") + " HTTP/1.1\r\n" +
                   "Host: " + host + "\r\n" +
                   "Connection: close\r\n" +
                   "\r\n"
                  );
 
      Serial.println("[Response:]");
      while (client.connected() || client.available())
      {
        if (client.available()){
          String line = client.readStringUntil('\n');
          Serial.println(line);
        }
      }
      client.stop();
      Serial.println("\n[Disconnected]");
    }
        else
        {
          Serial.println("connection failed!]");
          client.stop();
        }
    delay(5000);
  }

- Fri Jun 04, 2021 12:45 am #91546 does the other side act as HTTP server?

https://arduino.stackexchange.com/quest ... 6899#66899