public Roster getRoster() {
// synchronize against login()
synchronized (this) {
// if connection is authenticated the roster is already set by login()
// or a previous call to getRoster()
if (!isAuthenticated() || isAnonymous()) {
if (roster == null) {
roster = new Roster(this);
}
return roster;
}
}
if (!config.isRosterLoadedAtLogin()) {
if (roster == null) {
roster = new Roster(this);
}
roster.reload();
}
// If this is the first time the user has asked for the roster after calling
// login, we want to wait for the server to send back the user's roster. This
// behavior shields API users from having to worry about the fact that roster
// operations are asynchronous, although they'll still have to listen for
// changes to the roster. Note: because of this waiting logic, internal
// Smack code should be wary about calling the getRoster method, and may need to
// access the roster object directly.
if (!roster.rosterInitialized) {
try {
synchronized (roster) {
long waitTime = SmackConfiguration.getPacketReplyTimeout();
long start = System.currentTimeMillis();
while (!roster.rosterInitialized) {
if (waitTime <= 0) {
break;
}
roster.wait(waitTime);
long now = System.currentTimeMillis();
waitTime -= now - start;
start = now;
}
}
} catch (InterruptedException ie) {
// Ignore.
}
}
return roster;
}
