CODEWITHSUNDEEP
javaandroidsocketsiphost
Max Young
Max Young

Reputation: 1662

UnknowHostException android client socket

I am getting the exception java.net.UnknowHostException:http://arbitrary-hero.dyndns.org/. I am attempting to connect to the address with a android client application I have made.

I have two computers one is running ubuntu 10.10 and the other is running windows 7. When I go to www.ipchicken.com on the windows 7 computer to check my ip I get 71.72.220.109 when I do a ifconfig from the command line on my linux machine I get 71.67.105.9. The 71.72.220.109 goes to my server application on the windows 7 computer the 71.67.105.9 and the address arbitrary-hero.dyndns.org goes to the apache server on my ubuntu 10.10 machine. The computers are in the same house using the same network and I dont understand why they have those different addresses. Also I am trying to get them to both use the URL.

        String webserver = "71.67.105.9"; //does not work
        String everythingelseinthehouse = "71.72.220.109"; //works
        String weburl = "http://arbitrary-hero.dyndns.org/"; // does not work

        Socket sock = new Socket (weburl , 13267);
        //Socket sock = new Socket (address_everythingelse , 13267);
        //Socket sock = new Socket (address_room , 13267);

This is where I declare my socket, sorry about the extra code but I have tried all possible combinations to make this work.

If you would like more code from me to help me solve this problem please ask I would be very happy to resolve this issue.

Upvotes: 1

Views: 390

Answers (2)

Nikolai Fetissov
Nikolai Fetissov

Reputation: 84229

URL is not a host name, use InetAddress.getByName("something.dyndns.org") instead.

Other stuff about chickens is totally not clear in the question :)

Edit 0:

... when I do a ifconfig from the command line on my linux machine I get 71.67.105.9 ...

This tells me that your Linux box is either statically configured with this IP, or your router is setup to treat wired connections differently.

Upvotes: 1

Eng.Fouad
Eng.Fouad

Reputation: 117665

You need to add this premission to AndroidManifest.xml:

<uses-permission android:name="android.permission.INTERNET" />

Also, you need to use InetAddress for using the domain name instead of the IP address:

Socket sock = new Socket(InetAddress.getByName(weburl) , 13267);

Upvotes: 1

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