/*
* Receive an exception. If the resolution has been completed,
* do nothing. Otherwise make progress.
*/
public void handleException(Object id, Exception e) {
if (Options.check("verbose")) System.err.println("ExtendedResolver: got " + e);
synchronized (this) {
outstanding--;
if (done) return;
int n;
for (n = 0; n < inprogress.length; n++) if (inprogress[n] == id) break;
/* If we don't know what this is, do nothing. */
if (n == inprogress.length) return;
boolean startnext = false;
boolean waiting = false;
/*
* If this is the first response from server n,
* we should start sending queries to server n + 1.
*/
if (sent[n] == 1 && n < resolvers.length - 1) startnext = true;
if (e instanceof InterruptedIOException) {
/* Got a timeout; resend */
if (sent[n] < retries) send(n);
if (thrown == null) thrown = e;
} else if (e instanceof SocketException) {
/*
* Problem with the socket; don't resend
* on it
*/
if (thrown == null || thrown instanceof InterruptedIOException) thrown = e;
} else {
/*
* Problem with the response; don't resend
* on the same socket.
*/
thrown = e;
}
if (done) return;
if (startnext) send(n + 1);
if (done) return;
if (outstanding == 0) {
/*
* If we're done and this is synchronous,
* wake up the blocking thread.
*/
done = true;
if (listener == null) {
notifyAll();
return;
}
}
if (!done) return;
}
/* If we're done and this is asynchronous, call the callback. */
if (!(thrown instanceof Exception)) thrown = new RuntimeException(thrown.getMessage());
listener.handleException(this, (Exception) thrown);
}
/*
* Receive a response. If the resolution hasn't been completed,
* either wake up the blocking thread or call the callback.
*/
public void receiveMessage(Object id, Message m) {
if (Options.check("verbose")) System.err.println("ExtendedResolver: " + "received message");
synchronized (this) {
if (done) return;
response = m;
done = true;
if (listener == null) {
notifyAll();
return;
}
}
listener.receiveMessage(this, response);
}