Re: iframes between 3 different domains

[Øyvind Sean Kinsey]

A provider cannot directly act as a consumer due to conflicts in the messaging stack - if you need this then you need to introduce a second iframe (just as in the intermediary example) so that you have A(consumer) > B(provider) > B(consumer) > C(provider)

- Sean

On Thu, Jun 21, 2012 at 11:33 PM, swiniak <andrzej.p...@googlemail.com> wrote:

Hi,

It might be a silly question but I have almost no experience with JavaScript and I could not find any examples of communication across three domains.

What I have is domain A that returns iframe from domain B and domain B returns iframe from domain C.

Domain A exposes DA.resize(i,j) via easyXDM already, so I can easily access this from domain B. Now I'd like to have same action from domain C (so that the top most iframe from domain A is resized).

The exposed DA thingie looks something like this:

var DA = (function () {

    var DA = DA || {};

    var rpc;

    DA.init = function (options) {

        rpc = new easyXDM.Rpc({}, {

            remote:{

                resize:{},

                init:{},

            },

        });

        rpc.init();

        DA.resize();

    };

    DA.resize = function (width, height) {

        var w = width || "100%";

        var h = height || (document.body.offsetHeight + 40);

        rpc.resize(h, w);

    };

}

I tried adapting code from http://easyxdm.net/wp/2010/03/17/resize-iframe-based-on-content/ but could not make that to work.

I'd appreciate if anyone could direct me to some examples.

[swiniak]

OK, now I see... so B -> B will not be in conflict with same origin policy and then it will work... nice. 

It's hard to admit but I went into some strange way with modifying easyXDM script (changing few variable names and similar ridiculous things)... I did force it to work without additional iframe (so I have A -> B -> C only). But I guess I'll change the approach later. 

Thanks,

Andrzej

W dniu poniedziałek, 2 lipca 2012 08:07:23 UTC+2 użytkownik Øyvind Sean Kinsey napisał:

A provider cannot directly act as a consumer due to conflicts in the messaging stack - if you need this then you need to introduce a second iframe (just as in the intermediary example) so that you have A(consumer) > B(provider) > B(consumer) > C(provider)

- Sean

[Øyvind Sean Kinsey]

A > B > C would never work if it had to fall back to the hashtransport.. 

Øyvind Sean Kinsey
San Francisco, CA