On 19 May 2006, at 15:55, Gustavo García Bernardo wrote:

Hi,



Are there some kind of XML-RPC protocol “extension” allowing a XML- RPC server behind a NAT/FW to receive requests? I’m thinking in some kind of permanent TCP connection, established from server side (natted), and inside this connection could be transmited XML-RPC requests to the natted server.



I have used Jabber-RPC to solve this problem. Jabber-RPC is basically XML-RPC over the XMMP protocol. I used Google's GTalk Jabber service. It has the advantage that the server and the client can be behind different NAT routers.

I'm not sure of the availability of Java implementations. I wrote an implementation for Groovy (Groovy is a dynamic language which runs in the JVM and integrates seamlessly with Java code). You can find details at http://groovy.codehause.org (The site is recovering from a major crash at the moment - normal service should be resumed at the beginning of next week).


John Wilson
The Wilson Partnership
web http://www.wilson.co.uk
blog http://eek.ook.org



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