I'm new to writing Mozilla extensions and would like to write a
Javascript extension which selectively modifies the URL of an HTTP
request before the request is performed. Rewriting the links after a
page has been loaded won't work because I also need to intercept URLs
which are dynamically generated by Javascript (yuck) -- so it needs to
happen on-the-fly.
I've looked at handling the "http-on-modify-request" and changing the
Host request header
but that doesn't seem to work.
Here`s a sample of my code.
var urlObserver= {
observe: function(subject, topic, data){
if (topic == "http-on-modify-request") {
var httpChannel =
subject.QueryInterface(Components.interfaces.nsIHttpChannel);
if
(httpChannel.getRequestHeader("Host").toLowerCase().indexOf("doit.com") !
= -1){
httpChannel.setRequestHeader("Host",
"otherurl.com", false);
httpChannel.setRequestHeader("Referer", "", false);
}else{
if (logger){
logger.logInfo("Not Found...");
}
}
}
}
};
var observerService = Components.classes["@mozilla.org/observer-
service;1"]
.getService(Components.interfaces.nsIObserverService);
observerService.addObserver(urlObserver, "http-on-modify-request",
false);
I`ll really appreciate if anyone can point me in the right direction,
thanks...
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