src/main/java/com/alipay/remoting/util/RemotingUtil.java
public static int parseLocalPort(final Channel channel) {
        if (null == channel) {
            return -1;
        }
        final InetSocketAddress local = (InetSocketAddress) channel.localAddress();
        if (local != null) {
            return local.getPort();
        }
        return -1;
    }
public static int parseLocalPort(final Channel channel) {
        if (null == channel) {
            return -1;
        }
        final InetSocketAddress local = (InetSocketAddress) channel.localAddress();
        if (local != null) {
            return local.getPort();
        }
        return -1;
    }
public static int parseLocalPort ( final Channel channel ) { if ( null == channel ) { return - 1 ; } final InetSocketAddress local = ( InetSocketAddress ) channel . localAddress ( ) ; if ( local != null ) { return local . getPort ( ) ; } return - 1 ; }
Parse the local host port of the channel.

@param channel
@return int
Parse the local host port of the channel .