clientEvent called continuesly

Core Library Questions

mrumunhum

clientEvent called continuesly

in Core Library Questions • 2 years ago

Hi group,

I have a set of scripts that communicate via the network. Which works with one small problem. The clientEvent routine is called even if no data has been sent. It is my understanding that it is only to be called when there is data to read?
I'm sure it is the way I have it written?

import processing.net.*;
Client C;
String data;
int[] P = new int[2];

void setup() {
size(500,500);
smooth();
background( 255 );
C = new Client( this, "127.0.0.1", 5204 );
P[1] = 45; }

void draw() {
fill( P[1] % 255, 0, 0 );
translate( 250,250);
rotate( P[1] % 360 );
rect( 45, 45, 55, 55 ); }

void clientEvent( Client C ) {
println("Event");
int Yes;
while( ( Yes = C.available() ) != 0 ) {
    println("read: " + Yes);
    data = C.readStringUntil( '\n' );
    P = int( splitTokens( data, " \n" ) );
}
}

import processing.net.*;
Server S; float Old; float Now;
void setup() {
S = new Server( this, 5204); }
void draw() {
Now = millis();
int Time = int( ( Now - Old ) /100 );
int B = int( random( 0, 360 ) );
String Line = Time + " " + B + "\n";
if( true ) { S.write( Line ); }
else { print(Line); }
delay(1000);
Old = Now;
}

And what I get is:

read: 6Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
Event
. . . .

Any ideas??

William Estrada
Mt Umunhum, CA, USA
HTTP://64.124.13.3 ( Mt-Umunhum-Wireless.net )
Skype: MrUmunhum

Replies(4)

PhiLho

Re: clientEvent called continuesly

2 years ago

Well, first, you do seems to send data continually, one line per second.
But I am not sure why you don't display this data.

mrumunhum

Re: clientEvent called continuesly

2 years ago

Yes, that is by design. I want to wait until the server sends new data., then read it and process it.

The data is used , but this is just a test script.

William Estrada
Mt Umunhum, CA, USA
HTTP://64.124.13.3 ( Mt-Umunhum-Wireless.net )
Skype: MrUmunhum

PhiLho

Re: clientEvent called continuesly

2 years ago

We don't understand each other, I fear. I mean your server is sending data all the time, so why do you write " The clientEvent routine is called even if no data has been sent"? You stop the server and see client still receiving data?

mrumunhum

Re: clientEvent called continuesly

2 years ago

What I mean is that if the server stops sending data, the clientEvent is still called. The document states:

From: http://processing.org/reference/libraries/net/clientEvent_.html

Description This function is called when a server sends a byte to an existing Client object.

This is not the case, from the 'Event' output, the routine is called all the time and causing
a load on the CPU.

William Estrada
Mt Umunhum, CA, USA
HTTP://64.124.13.3 ( Mt-Umunhum-Wireless.net )
Skype: MrUmunhum

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