This is my first attempt at writing an extension. I would like to intercept certain requests, inspect them, and handle SOME of them BEFORE they are sent to the remote server. In other words, for certain requests, I would like to handle the response entirely in my own code, and have my browser think that the response came from the remote server.
I have modified some of the Python example extensions I found in the docs, and so far I have it intercepting proxy responses/requests fine. However I am having trouble when I go to write a response of my own (rather than forwarding the request on to the remote server). I have attempted using the following to write a response to the intercepted request: message.getMessageInfo().setResponse(b'TEST')
(Note that I am using Python.) When I attempt this, I get an error message that states "java.lang.UnsupportedOperationException: Request has not yet been issued".
... which is exactly what I am trying to do - handle the request before it has been issued. Is that possible?
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