nsICacheService doesn't work in Firefox 38

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I use

Components.classes["@mozilla.org/network/cache-service;1"].getService(Components.interfaces.nsICacheService);

to manipulate http cache when developing Firefox extension.

But after I upgrade to Firefox 38 esr, this interface throws error when calling its function

[Exception... "Component returned failure code: 0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsICacheService.visitEntries]" nsresult: "0x80004001 (NS_ERROR_NOT_IMPLEMENTED)"

And I didn't find it obsolete in MDN, so anyone knows why? Thanks a lot.

javascript
firefox
firefox-addon
asked on Stack Overflow Jun 11, 2015 by Leslie Wu

2 Answers

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http://code.metager.de/source/xref/mozilla/firefox/netwerk/cache/nsICacheService.idl

This looks like a hint * @throws NS_ERROR_NOT_IMPLEMENTED when the cache v2 is prefered to use.

https://bugzilla.mozilla.org/show_bug.cgi?id=913807

I’m thinking that all we need to do is change 1 to 2 in this line in the

var cacheService = cc["@mozilla.org/network/cache-service;1"] .getService(ci.nsICacheService);

answered on Stack Overflow Jun 14, 2015 by Don
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I tried this code and it throws: (copy paste run in scratcpad in browser environment - https://www.youtube.com/watch?v=oo4STWceGTM )

var cacheService = Cc["@mozilla.org/network/cache-service;1"].getService(Ci.nsICacheService);
console.log('cacheService:', cacheService);

function CacheVisitor(){}

CacheVisitor.prototype = {
    QueryInterface : function(iid)
    {
        if (iid.equals(Ci.nsICacheVisitor))
            return this;
        throw Components.results.NS_NOINTERFACE;
    },

    visitDevice : function(deviceID, deviceInfo)
    {
        console.log("[visiting device (deviceID = ", deviceID ,", description = ", deviceInfo.description ,")]");
        return true;
    },

    visitEntry : function(deviceID, entryInfo)
    {
        console.log("[visiting entry (clientID = ", entryInfo.clientID, "key = ", entryInfo.key, ")]");
        return true;
    }
};
var visitor = new CacheVisitor();
cacheService.visitEntries(visitor); // throws on this line here!!!

It throws on line cacheService.visitEntries(visitor); // throws on this line here!!! it throws this:

/*
Exception: [Exception... "Component returned failure code: 0x80004001 (NS_ERROR_NOT_IMPLEMENTED) [nsICacheService.visitEntries]"  nsresult: "0x80004001 (NS_ERROR_NOT_IMPLEMENTED)"  location: "JS frame :: Scratchpad/1 :: <TOP_LEVEL> :: line 27"  data: no]
*/

This is the same issue you're having it looks like. Can you verify, I dont see reproducible code from you.

answered on Stack Overflow Jun 11, 2015 by Noitidart

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