I'm building a remote for my WiFi-RGB Lights. I have an ESP8266, that should send ONE Tcp packet with 4 chars. My code:

    #include <ESP8266WiFi.h>

const char* ssid     = "Wifi";
const char* password = "wifikey";
 

void WiFiEvent(WiFiEvent_t event) {
    Serial.printf("[WiFi-event] event: %d\n", event);  
}

void setup() {
    Serial.begin(115200);
    WiFi.disconnect(true);
    delay(1000);
    WiFi.onEvent(WiFiEvent);
    WiFi.begin(ssid, password);
}
 

void loop() {
    delay(1000);
    const uint16_t port = 5577;
    const char * host = "192.168.178.150";
 
     WiFiClient client;
     client.connect(host, port);
     
     client.print(char(0x71));
     client.print(char(0x24));
     client.print(char(0x0f));
     client.print(char(0xa4));
 
     client.flush();
     client.stop();
 
     delay(5000);   
}

The Problem: I send 4 TCP-Pacets, but should send 1 TCP Pacet with all the 4 chars. Thanks for your Help :)

I'm building a remote for my WiFi-RGB Lights. I have an ESP8266, which should send one TCP packet with 4 chars.

My code:

#include <ESP8266WiFi.h>

const char* ssid     = "Wifi";
const char* password = "wifikey";

void WiFiEvent(WiFiEvent_t event) {
  Serial.printf("[WiFi-event] event: %d\n", event);  
}

void setup() {
  Serial.begin(115200);
  WiFi.disconnect(true);
  delay(1000);
  WiFi.onEvent(WiFiEvent);
  WiFi.begin(ssid, password);
}

void loop() {
  delay(1000);
  const uint16_t port = 5577;
  const char * host = "192.168.178.150";
  WiFiClient client;
  client.connect(host, port);
  client.print(char(0x71));
  client.print(char(0x24));
  client.print(char(0x0f));
  client.print(char(0xa4));
  client.flush();
  client.stop();
  delay(5000);   
}

The problem: I send 4 TCP packets, while I should send 1 TCP packet with all 4 chars.

Thanks for your help.