Name lookup is still blocking

Chris Hegarty chris.hegarty at
Mon Jun 23 07:57:26 UTC 2014

On 23/06/14 06:15, Wang Weijun wrote:
> I'm using non-blocking SocketChannel (and DatagramChannel) to connect to multiple servers. The argument in SocketChannel.connect(remote) is a SocketAddress, and creating a normal InetSocketAddress object is still blocking. I see there is a InetSocketAddress.createUnresolved() method but calling SocketChannel.connec() upon such an address always throws an UnresolvedAddressException. It seems the method does not try to resolve it at all.
> Is there a way to make the name lookup process also non-blocking?

Not that I am aware of.


> Otherwise, if my server list contains a slow-resolving one at 1st position and a faster one at 2nd, there is still no chance for the 2nd one to be picked up.
> Thanks
> Max

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