Photon tcp client/ client.connect() error

General
1

I am trying to make a client in my photon to communicate to a server I have made in labview. The server works fine, but the client can’t connect to it. Here is my code:

TCPClient client;
byte server[] = {130,64,148,78};

void setup() {
    Serial.begin(9600);
    while(!Serial.available()) Particle.process();

    Serial.println("connecting...");


   if(client.connect(server,5002)){
        Serial.println("connected");
        client.write("testing\r\n");
        
    } else{
        Serial.println("connection failed");
    }
}

void loop() {
    if(client.available()){
       client.write("a\r\n");
    }
    if(!client.connected()){
        Serial.println();
        Serial.println("disconecting");
    }
}
2

The check for client.available() indicates data from the server is ready to be read. Instead of reading (and emptying the receive buffer), you do a client.write(). This loop will eventually break I suspect. What output are you getting from your debug messages?

3

There are no debug messages. The problem is that it doesn’t connect to the server in the first place, the setup function.

4

@pesma, in the least you should be seeing “connecting…” and possibly “connection failed” in your serial console. Do you get these?

5

Yes, thats exactly what I’m getting.

6

@pesma, have you verified that port 5002 is open in any router or firewall between the photon and the target server?

7

yep, they re both using the same port.