so i wrote a really simple client and server, where the client sends an integer string followed by a semicolon, and the server reads the integer string followed by a semicolon and writes it to all clients.

unfortunately, not all of the strings seem to make it from the client to the server.  what is going on?

here is my simple server code:

import processing.net.*;

int server_port = 5204;      
Server server;        
char data_delimiter = ';';

Client client;
String client_data;

void setup()
{
 size(100, 100);
 background(0);
 frameRate(30);
 
 server = new Server(this, server_port);  
}

void draw()
{
 background(0);
   
 //get next available client
 client = server.available();
 
 // send client data to all clients
 if (client != null)
 {
   client_data = client.readStringUntil(data_delimiter);        
   if (client_data != null)
   {      
     println(client_data);
     server.write(client_data);
   }    
 }
}

and here is my simple client code:

import processing.net.*;

Client client;
String server_address = "127.0.0.1";
int server_port = 5204;

int msg_count;
char data_delimiter = ';';

boolean send_msg;

void setup()
{
 size(100,100);
 client = new Client(this, server_address, server_port);
 msg_count = 0;
 send_msg = true;
}

void draw()
{
 String client_data;
   
 if (client.available() > 0)
 {
   client_data = client.readStringUntil(data_delimiter);
  // println("received: " + client_data);
 }
 
 if (send_msg)
 {

   client.write(Integer.toString(msg_count) + data_delimiter);
   println("sent: " + msg_count + data_delimiter);
   msg_count++;
 }
}

void mouseReleased()
{
 send_msg = !send_msg;
}


what is going wrong?