Problems With Multiple Ethernet Clients

Projects Programming
5 
void SerialOpen(String Message)
{
  int firstComma = Message.indexOf(',');
  String sPort = Message.substring(0, firstComma);
  String sBaud;
  int nBaud;
  if (sPort != "1" && sPort != "2")
  {
    Serial.print("Invalid Serial Command");
  }
  else
  {
    Message.remove(0, firstComma + 1);
    sBaud = Message;
    nBaud = sBaud.toInt();
    sPort == "1" ? Serial1.begin(nBaud) : Serial2.begin(nBaud); 
    sPort == "1" ? Serial.println("sPort = 1, sBaud = " + sBaud) : Serial.println("sPort = 2, sBaud = " + sBaud);
  }
}

void SerialClose(String Message)
{
  int firstComma = Message.indexOf(',');
  String sPort = Message.substring(0, firstComma);
  String sBaud;
  int nBaud;
  if (sPort != "1" && sPort != "2")
  {
    Serial.print("Invalid Serial Command");
  }
  else
  {
    sPort == "1" ? Serial1.end() : Serial2.end();
    sPort == "1" ? Serial.println("sPort = 1 closed") : Serial.println("sPort = 2 closed");
  }
}


void FlashingFunction(bool LED_Flash1, bool LED_Flash2, bool LED_Flash3)
{
  unsigned long currentMillis = millis();
  for (int i = 1 ; i <= 3 ; i++)
  {
    if (currentMillis - previousMillis >= interval)
    {
      // save the last time you blinked the LED
      previousMillis = currentMillis;
      if (LED_Flash1 == true)
      {
        ledState1 == LOW ? ledState1 = HIGH : ledState1 = LOW;
        digitalWrite(LED_1, ledState1);
      }
      if (LED_Flash2 == true)
      {
        ledState2 == LOW ? ledState2 = HIGH : ledState2 = LOW;
        digitalWrite(LED_2, ledState2);
      }
      if (LED_Flash3 == true)
      {
        ledState3 == LOW ? ledState3 = HIGH : ledState3 = LOW;
        digitalWrite(LED_3, ledState3);
      }
    }
  }
}

void Test(String s_test)
{
  Serial1.print(s_test);
}