So i finally came up with protoype based implementation for
crossdomain iframe communication based on Julien's example as can be
seen live in http://www.julienlecomte.net/blogfiles/cross-frame/ For
quick reference, lets say an iframe from domain B is hosted on main
site from domain A. In order to talk to the main site, iframe creates
an iframe loading proxy file from domain B which passes on the message
from its current location to the main site using custom event
notification mechanism (because both belong to the same domain B). As
soon as the message is delivered (part of loading of the iframe's
body), in iframe's onload event, iframe is destroyed after cleaning up
the listeners attached to it.

Now comes my problem. These messages are reaching fine across
different domains. But the order is not guaranteed. I think this is
more so because of the loading order of the iframes that are
dynamically created for each message and then destroyed. Is there a
way i could ensure the ordered delivery? I tried to reuse the iframes
for multiple messages (not destroying at the end of the message
delivery); but then location update is not communicated to the iframe
(should have happened in "onload" listener, but it doesn't). Any idea
what could be done?

For more reference on crossdomain communication with iframes, please
see http://softwareas.com/cross-domain-communication-with-iframes

Thanks in advance for any pointers.


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