Packet sniff of facebook

[Kwstas Na]

I have one question. As i've seen some people have discovered some ajax mercury links that facebook has for some reasons.

facebook.com/ajax/mercury/change_read_status.php$xmlhttprequest

The link above is about "Seen" in chat.

facebook.com/ajax/mercury/type.php$xmlhttprequest

The link above is about "Typing" sign in chat.

I also have discovered this link acidentaly cause my browser crashed and last link that appeared was this one.

https://upload.facebook.com/ajax/mercury/upload.php

which is the link that uploads attachments and photos to chat.

So my question is... Is there any other way that we can find out ajax links of facebook that are responsible for any other type of codes in the page?

Any packet tracer or something like this which traces the link of ajax??

Can firebug do this?

[Sebastian Zartner]

I'm not quite sure what your actual goal is, though Firebug's Net panel as well as its Console panel (with enabled Show XMLHttpRequests option) list all AJAX requests sent by the browser.

Sebastian