Specify connection timeout in java.nio

Question

Using non-blocking I/O, the code for connecting to a remote address looks something like:

SocketChannel channel = SelectorProvider.provider().openSocketChann         


        

Answer 1

The question doesn't really make sense. Timeouts are for blocking mode. If you want that, leave the channel in blocking mode and call channel.socket().connect(address, timeout);. If you want non-blocking mode, use your current code; then create a Selector; register the channel for OP_CONNECT; when you get it call finishConnect(), and if that returns true deregister OP_CONNECT and continue with the rest of your code.