javascript - Get Response Header/Body -

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i'm developing firefox addon , i'm listening http responses this:

var observerservice = components.classes["@mozilla.org/observer-service;1"].getservice(components.interfaces.nsiobserverservice); observerservice.addobserver(httpobserver, "http-on-examine-response", false);

which calls httpobserver object looks this:

var httpobserver = {  observe : function(asubject, atopic, adata)   {               asubject.queryinterface(components.interfaces.nsihttpchannel);             httpstatus = asubject.responsestatus;             if(httpstatus == 200 && asubject.contenttype.tostring().indexof("text/") != -1)             {                 alert("url: " + asubject.name + "\r\nstatus: " + httpstatus + "\r\ncontenttype: " + asubject.contenttype); //works great                 alert("body: " + asubject.responsetext); //is undefined, why?             }             else if(httpstatus == 404 && asubject.contenttype.tostring().indexof("text/html") != -1)                 alert("page not found!\r\nurl: " + asubject.name + "\r\ncontenttype: " + asubject.contenttype);  } };

i've got following problem(s):

i'd whole body , header response don't know how. once read problem server not in same domain, how firefox handles then?

i did lot of research didn't find usefull, maybe missed something..

btw.: i've got access request object if helps.

you use nsitraceablechannel interface that, implemented http requests. allows replace channel listener 1 of own, can read out data in ondataavailable call before passing on original listener. there example code doing here: http://www.softwareishard.com/blog/firebug/nsitraceablechannel-intercept-http-traffic/


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