[Cosmo-dev] CMP 204 responses

[Travis Vachon]

Sorry to take so long to respond to this, I wanted to double check to  
make sure I know what I'm talking about...
>
> are you able to examine arbitrary response headers with xhr? if so,
> why not use a custom response header to unambiguously distinguish
> successful 204 responses? in other words, continue to return 204 as
> normal, and include another header (write it in the same filter that
> processes the POST-tunneling request header?) that the broken browsers
> can look for to see that the request succeeded.

Unfortunately, it looks like the XHR requests in these browsers bail  
before the javascript gets access to them, and doesn't even preserve  
details like the headers, so unfortunately this won't work.

-Travis