// Got a response UDP packet, or completed a large TCP answer-receive.
// Install it as The Answer packet and wake up anybody waiting on an answer.
protected void response(AutoBuffer ab) {
assert _tasknum == ab.getTask();
if (_done) {
ab.close();
return;
} // Ignore duplicate response packet
int flag = ab.getFlag(); // Must read flag also, to advance ab
if (flag == SERVER_TCP_SEND) {
ab.close();
return;
} // Ignore UDP packet for a TCP reply
assert flag == SERVER_UDP_SEND;
synchronized (this) { // Install the answer under lock
if (_done) {
ab.close();
return;
} // Ignore duplicate response packet
_dt.read(ab); // Read the answer (under lock?)
ab.close(); // Also finish the read (under lock?)
_dt.onAck(); // One time only execute (before sending ACKACK)
_done = true;
UDPTimeOutThread.PENDING.remove(this);
TASKS.remove(_tasknum); // Flag as task-completed, even if the result is null
notifyAll(); // And notify in any case
}
}
// Attempt to cancel job
public final boolean cancel(boolean mayInterruptIfRunning) {
boolean did = false;
synchronized (this) { // Install the answer under lock
if (!isCancelled()) {
did = true; // Did cancel (was not canceled already)
_target = null; // Flag as canceled
UDPTimeOutThread.PENDING.remove(this);
TASKS.remove(_tasknum);
}
notifyAll(); // notify in any case
}
return did;
}
