Thank you very much Michel,
your answer really helped me.
Do you know where can i find a list of existing notifications
(i.e. "http-on-modify-request","http-on-examine-response"), available to
register an observer with ?
In other words how or where can i find out what is available to hook
(register an observer) to ?
Thanks again
Andrea
Michel Gutierrez wrote:
>> I would like to add some http headers (by creating and installing a
>> firefox extension), to all the http requests that firefox makes.
>> Could anyone point me to the right direction ?
>
>
> You can register an observer that will be called just before the http
> request is actually issued. For instance, the code below will change the
> referer field on outgoing requests.
>
> var observerService =
> Components.classes["@mozilla.org/observer-service;1"]
> .getService(Components.interfaces.nsIObserverService);
>
> var reqObserver = {
> observe: function(subject,topic,data) {
> var request =
> subject.QueryInterface(Components.interfaces.nsIRequest);
> dump("Request: "+request.name+"\n");
> var httpChannel =
> subject.QueryInterface(Components.interfaces.nsIHttpChannel);
> httpChannel.setRequestHeader("referer",
> "http://myreferer.com/",false);
> }
> };
> observerService.addObserver(reqObserver, "http-on-modify-request",false);
>
> You can also hook the http response using "http-on-examine-response"
> instead of "http-on-modify-request".
>
> /mig
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