HI,

this is a copy of a bug report that I have posted.

The problem I encounter with this procedure is that it is triggered regularly, even when no data is available.

I have made two tests : one with Roborealm telnet server and one with a SSH server.

--------------------- General Local System Info

Processing 1.0.7
Windows XP Pro SP3
Toshiba T2300

-------------------- Bug description

When using the clientEvent procedure from the network library, the
procedure gets triggered all the time even when no data is coming from the server.

----------------------- Test code and output

The following program starts a client to the Roborealm telnet server and writes a command. The clientEvent procedure is supposed to get data from server when available. As the output shows, clientEvent is triggered regularly without any data available.

--------------------------------- CODE

import processing.net.*;
Client myClient;
int dataIn;
byte[] byteBuffer = new byte[128];

// The program tries to talk to RoboRealm telnet interface on port 6060.

void setup() {
println("Starting");
myClient = new Client(this, "127.0.0.1", 6060);
println("Querying");
myClient.write("<request><get_all_variables></get_all_variables></request>");
println("Waiting");
}

// Empty draw loop
void draw() {
}

// Client Event gets data from server and prints it or says "no data available"

void clientEvent(Client myClient) {
print("Server Says: ");
if (myClient.available() > 0) {
int byteCount = myClient.readBytes(byteBuffer);
if (byteCount > 0 ) {
// Convert the byte array to a String and print it
String myString = new String(byteBuffer);
println(myString);
}
}
else {
println("No Data");
}
}


------------------------ OUTPUT




Starting
Server Says: No Data
Querying
Waiting
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says:
<response><POWER_LIFE_TIME>-1</POWER_LIFE_TIME><FPS></FPS><IMAGE_TIME>0.000000</
IMAGE_TIME><IMAGE_WIDTH>640</IMAGE_WIDTH><SERVO_
Server Says:
VALUE>0</SERVO_VALUE><IMAGE_HEIGHT>480</IMAGE_HEIGHT><POWER_LIFE_PERCENT>100</PO
WER_LIFE_PERCENT><PROCESS_TIME>31</PROCESS_TIME>
Server Says:
<MOVEMENT_PERCENT>0</MOVEMENT_PERCENT><IMAGE_COUNT>164</IMAGE_COUNT><POWER_CHARG
E>HIGH</POWER_CHARGE><IMAGE_PROCESSED>164</IMAGE
Server Says:
_PROCESSED><MOVEMENT_PIXELS>0</MOVEMENT_PIXELS><POWER_DEVICE>AC</POWER_DEVICE></
response>OWER_CHARGE><IMAGE_PROCESSED>164</IMAGE
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says: No Data
Server Says: No Data


I don't know if someone else has the same behaviour or if there is a known workaround.

I know that the CPU time consumed is rather minimal but I'd like to understand what triggers the procedure.

Thanks.