TCP server for ESP-07

tcp.ino

#include <ESP8266WiFi.h>

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

WiFiServer server(5055);

int pinLeft   = 13;
int pinRight  = 12;
bool ValLeft  = false;
bool ValRight = false;

void setup() {
  Serial.begin(115200);
  delay(100);

  pinMode(pinLeft, OUTPUT);
  pinMode(pinRight, OUTPUT);
  digitalWrite(pinLeft, 0);
  digitalWrite(pinRight, 0);
  
  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");
  server.begin();
  Serial.println("Server started");
  Serial.println(WiFi.localIP());
}

void loop() {
  WiFiClient client = server.available();
  if (!client) {
    return;
  }
  Serial.println("new client");
  while(!client.available()){
    delay(1);
  }
  String req = client.readStringUntil('\r');
  Serial.println(req);
  client.flush();
  
  if (req.indexOf("gpio13") != -1)
  {
    ValLeft = !ValLeft;
    digitalWrite(pinLeft, (ValLeft)?HIGH:LOW); 
  }
  else if (req.indexOf("gpio12") != -1)
  {
    ValRight = !ValRight;
    digitalWrite(pinRight, (ValRight)?HIGH:LOW); 
  }
  else {
    client.stop();
    return;
  } 
  
  client.flush();
  delay(1);  
  Serial.println("disonnected");
}