@Override
            public void onConnected() throws IOException {
                // Prepare to read data.
                mProxyTunnel.prepareRead();
                mRemoteTunnel.prepareRead();
            }
TCP protocol virtual gateway tunnel wraps {@link TcpProxyTunnel} and {@link TcpRemoteTunnel} as
client and server.

@author Megatron King
@since 2018-11-18 00:19
netbare-core/src/main/java/com/github/megatronking/netbare/tunnel/TcpVATunnel.java