一个蓝牙嗅探器的源码
package bluetoothSniffer;
public class BTTestClass {
static String addressString; // IP address to connect to
static int addressPort; // port to connect to
static BTSnifferThread mySniffer; // thread to start running
public static void main(String argv[]){
// we need two arguments:
if (argv.length < 2) {
System.out.println("invocation: BTTestClass addressString, portNumber");
System.exit(0);
} else {
addressString = new String(argv[0]);
addressPort = Integer.parseInt(argv[1]);
mySniffer = new BTSnifferThread(addressString, addressPort);
mySniffer.start();
}
while (mySniffer.isAlive()) {
// twiddle your thumbs.
}
System.exit(0);
}
}
package bluetoothSniffer;
import java.net.*;
import java.io.*;
class BTSnifferThread extends Thread {
Socket s; // connection to Lantronix device
private BufferedReader networkIn; // text in from socket
private PrintWriter networkOut; // text out to socket
String someText; // for reading string in from socket
private String addressString; // address to connect to
private int addressPort; // port to connect to
private boolean btReady; // if the BT dongle can take a command or not
BufferedReader localIn; // input from keyboard
BTSnifferThread(String _addressString, int _addressPort) {
// put parameters in local variables, open local input stream:
addressString = _addressString;
addressPort = _addressPort;
localIn = new BufferedReader(new InputStreamReader(System.in));
}
public void run() {
try {
// open socket to Lantronix device:
s = new Socket(addressString, addressPort);
System.out.println("Connection accepted");
// set up input and output streams from socket:
networkIn = new BufferedReader(
new InputStreamReader(s.getInputStream()));
networkOut = new PrintWriter(s.getOutputStream());
// clear output buffer:
networkOut.flush();
} catch(IOException e) {System.out.println(e);}
// send an initial info query, to see that the BT dongle is alive:
this.getBTInfo();
// repeat until socket is closed:
while(!s.isClosed()) {
try {
// read in a line at a time:
someText = networkIn.readLine();
System.out.println(someText);
// if BT dongle says "OK", then
// it's ready to accept another command:
if (someText.equals("OK")) {
this.setBtReady(true);
}
//if BT dongle is doing nothing, scan for new devices:
if (this.isBtReady()) {
this.startBTInquiry();
}
} catch(IOException e){
System.out.println(e);
}
}
}
public void kill() {
// close socket if it's still open:
if (!s.isClosed()) {
try {
s.close();
} catch(IOException e) {System.out.println(e);}
}
}
public void getBTInfo () {
// if the socket's open, send the BT dongle info string:
if (!s.isClosed()) {
networkOut.print("AT+BTINFO?\r\n");
networkOut.flush();
setBtReady(false);
}
}
public void startBTInquiry() {
// if the socket's open, send the BT dongle inquiry string:
if (!s.isClosed()) {
networkOut.print("AT+BTINQ?\r\n");
networkOut.flush();
setBtReady(false);
}
}
protected boolean isBtReady() {
return btReady;
}
protected void setBtReady(boolean btReady) {
this.btReady = btReady;
}
}
