[Rxtx] read() not blocking?

[Knute Johnson]

Here is my test program and the output.  I've tried it on my Dell 380 
desktop and my old Dell laptop and the results are the same.

import java.io.*;
import java.text.*;
import java.util.*;
import gnu.io.*;

public class test {
    public static void main(String[] args) throws Exception {

        CommPortIdentifier cpi =
         CommPortIdentifier.getPortIdentifier("COM1");
        SerialPort sp = (SerialPort)cpi.open("test",2500);
               
        // set serial port parameters
        sp.setSerialPortParams(9600,SerialPort.DATABITS_8,
        SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);
        sp.setFlowControlMode(SerialPort.FLOWCONTROL_NONE);

        sp.enableReceiveTimeout(Integer.MAX_VALUE);

        InputStream is = sp.getInputStream();
        BufferedInputStream bis = new BufferedInputStream(is);

        SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");

        System.out.println("Started "+sdf.format(new Date()));

        while (true) {
            int n = bis.read();
           System.out.println(sdf.format(new Date())+" "+n);
        }
    }
}

C:\com\knutejohnson\redrock\race>java test
Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version   = RXTX-2.1-7
Started 18:40:11
18:40:51 -1
18:41:31 -1
18:42:11 -1
18:42:51 -1
18:43:31 -1

Thanks,

-- 
Knute Johnson
Molon Labe...