handleChannelClose method
Handles Channel closed by server.
Implementation
@override
void handleChannelClose(Channel chan, [String description]) {
if (chan == sessionChannel) {
writeCipher(MSG_DISCONNECT());
sessionChannel = null;
} else if (chan.cb != null) {
chan.opened = false;
if (chan.error != null) {
chan.error(description);
} else {
chan.cb(chan, Uint8List(0));
}
}
}