src/main/java/com/alipay/remoting/util/RemotingUtil.java
public static String parseRemoteAddress(final Channel channel) {
        if (null == channel) {
            return StringUtils.EMPTY;
        }
        final SocketAddress remote = channel.remoteAddress();
        return doParse(remote != null ? remote.toString().trim() : StringUtils.EMPTY);
    }
public static String parseRemoteAddress(final Channel channel) {
        if (null == channel) {
            return StringUtils.EMPTY;
        }
        final SocketAddress remote = channel.remoteAddress();
        return doParse(remote != null ? remote.toString().trim() : StringUtils.EMPTY);
    }
Parse the remote address of the channel.

@param channel
@return