I am trying to data from a server. Sometimes my code fails due to an UnknownHostException. Why is that? What is the cause of this problem?

Is there some cli tool I can use to validate the contents of known_hosts? Maybe try to ping all the hosts in there and see if I can connect to each? Probably using either ssh-keygen or ssh-keyscan...

I was taken internet permission in manifest file. My mobile network connection is also working. The main code: /** * Created by Yogesh on 5/07/2016. */ public class All_Item_Fragment extends and...

I have an web service call to bring down a JSON object and it only works if I have the IP address and not the host name. I have been fine using IP addresses but now I need to have the host name. H...

in command line > ftp ftp://ftp-trace.ncbi.nih.gov/1000genomes/ftp/data/ Work on one computer but does not work on my other one. Error returned ftp: ftp://ftp-trace.ncbi.nih.gov/1000genom...