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$Id$
This document describes the standard CORBA location forwarding
example. For detailed explanation on how TAO's location forwarding
feature is designed, see
$TAO_ROOT/docs/forwarding.html
The test in this directory sets up two servers, the first writes its
servant's object reference (OR) to a file. The second server reads
the OR, recognizes it as forwarding location, and writes its own to a
file too. This OR is then read by the client, which then issues a
number of requests. Where every third request is a forwarding request
to the object.
Here's an example for 5 requests:
first call (request no 1)
second call (request no 2)
forwarding call (request no 3)
thrid call (request no 4)
fourth call (request no 5)
(no six would be a forwarding call again)
Two types of location forwardings are implemented: (1) the POA
approach and (2) the servant locator approach. Both are mentioned in
the above documentation about location forwarding.
To run the test for the POA approach do the following:
% server -o server2 -ORBobjrefstyle url
% server -f server2 -o server1 -ORBobjrefstyle url
% client -f server1 -i 5
A similar invocation for the servant locator approach can be done as
follows (basically just the switches are different):
% server -p server2 -ORBobjrefstyle url
% server -g server2 -p server1 -ORBobjrefstyle url
% client -f server1 -i 5
For additional features try using the first server with the POA
apporach and the second with the servant locator approach:
% server -o server3 -ORBobjrefstyle url
% server -g server3 -p server2 -ORBobjrefstyle url
% server -f server2 -o server1 -ORBobjrefstyle url
% client -f server1 -i 8
The first two calls will be called on server1, then the location
forwarding is called on this one and the next two calls are going to
be called on the second one. Location forwarding is then called on
the second one and the last two calls are then done on the thrid
server.
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