The latest version 2.4.1 ,How to block application when using local proxy?

[nulllpoint]

The following code has been deleted in the latest version, other way? issue #371

 //ignore traffic destined for localhost 
 if( (YES == [remoteEndpoint.hostname hasPrefix:@"::1"]) || 
     (YES == [remoteEndpoint.hostname isEqualToString:@"127.0.0.1"]) ) 
 { 
    //log msg 
    os_log_debug(logHandle, "ignoring 'localhost' traffic"); 
        
    //bail 
    goto bail; 
 } 

[lyhxiangyang]

The new version does remove this part. Can anyone describe how to compile and run the whole project? It always seems to fail on the signature part when I run it. Is there some condition required?