private static final ConcurrentMap<LocalAddress, Channel> boundChannels = PlatformDependent.newConcurrentHashMap();
static LocalAddress register(
Channel channel, LocalAddress oldLocalAddress, SocketAddress localAddress) {
if (oldLocalAddress != null) {
throw new ChannelException("already bound");
}
if (!(localAddress instanceof LocalAddress)) {
throw new ChannelException(
"unsupported address type: " + localAddress.getClass().getSimpleName());
}
LocalAddress addr = (LocalAddress) localAddress;
if (LocalAddress.ANY.equals(addr)) {
addr = new LocalAddress(channel);
}
Channel boundChannel = boundChannels.putIfAbsent(addr, channel);
if (boundChannel != null) {
throw new ChannelException("address already in use by: " + boundChannel);
}
return addr;
}