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TCP Socket connection to a domain name

TCP Socket connection to a domain name

(OP)
Hi,

Just started learning java.  I'm writing an Android app, and want to connect to a TCP server using a domain name, eg. myserver.mydomain.com

The code I'm using is:

CODE

Socket connfd = new Socket (InetAddress.getByName("myserver.mydomain.com").getHostAddress(), 3280);

This line causes the app to hang.  If I remove the getHostAddress() bit, eg.

CODE

Socket connfd = new Socket (InetAddress.getByName("myserver.mydomain.com"), 3280);
Then it will timeout eventually, but never try the connection.

The TCP server app listening at the other end is a Delphi app I wrote with logging, and I can see that it's never receiving the connection request.

Help please?

RE: TCP Socket connection to a domain name

What happens if you use the numerical IP?

Cheers,
Dian

RE: TCP Socket connection to a domain name

(OP)
It connects fine with a numerical IP.

RE: TCP Socket connection to a domain name

Then my next check would be to print the result of InetAddress.getByName("myserver.mydomain.com").getHostAddress() to test it's resolving correctly.

Cheers,
Dian

RE: TCP Socket connection to a domain name

(OP)
Problem solved.  Combination of the eclipse IDE not doing an inline resolve correctly, plus that I'd forgotten to poke a hole in the firewall - oops.

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