// Send message to base station
public void sendMessage(Message m) {
try {
os.write(m.toString().getBytes());
os.flush();
} catch (IOException e) {
System.out.println("Failed to send message!");
}
}
// Main thread
public void run() {
String stringBuffer = "";
byte[] byteBuffer = new byte[1024];
connection = Bluetooth.waitForConnection();
connected = true;
is = connection.openDataInputStream();
os = connection.openDataOutputStream();
terminateFlag = false;
while (!terminateFlag) {
// read into byte[] buffer
int bytesRead;
try {
bytesRead = is.read(byteBuffer);
} catch (IOException e) {
bytesRead = 0;
}
if (bytesRead > 0) {
// transfer from byte[] into StringBuffer
stringBuffer += new String(byteBuffer, 0, bytesRead);
// check for }
// if found, this suggests that we just finished receiving a full message
int endChar = stringBuffer.indexOf("}");
if (endChar != -1) {
// check for matching {
int startChar = stringBuffer.indexOf("{");
if (startChar != -1 && startChar < endChar) {
// parse the message and add it to the queue
Message messageRead = new Message(stringBuffer.substring(startChar, endChar + 1));
messageQueue.push(messageRead);
Message ack = new Message(messageRead.getSeqNum());
ack.pairs.add(new String[] {"ack", null});
sendMessage(ack);
}
// clean command up to } off stringBuffer
if (endChar == stringBuffer.length() - 1) {
stringBuffer = "";
} else {
stringBuffer = stringBuffer.substring(endChar + 1);
}
}
}
}
// disconnect
try {
is.close();
os.close();
} catch (IOException e) {
// TODO: not fail silently
}
connection.close();
connected = false;
}
