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Applet-Servlet not on the same server.

Posted on 2001-07-05
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Last Modified: 2013-11-24
Is there a way to allow an Applet to call a Servlet which is not on the same server as the Applet by modifying some policy files? (or otherwise)

Thanks in advance,

Llaurick
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Question by:llaurick
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sghosh092199 earned 200 total points
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Basic applets are allowed to connect only to their originating host. It is possible to allow an Applet to call a Servlet on another machine by making changes to the policy file. The policy file java.policy would look like this:

grant {
  permission java.net.SocketPermission "156.65.127.45", "accept, connect, listen, resolve";
};

You will specify this policy file in the Java appletviewer command.
appletviewer -J-Djava.security.policy=java.policy Applet.html

The limitation with this approach is obvious. It can only be used in conjuction with the appletviewer command. So, better options will be Digital Signatures and Certificates.

You can find good help here:
http://java.sun.com/docs/books/tutorial/security1.2/sigcert/index.html

I will try to post some sample programs soon.

Good luck!
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by:sudhakar_koundinya
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No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:


-- points to sghosh


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