3xx redirects - request formation

[mnot]

see whatwg/fetch#609

[reschke]

Well, the issue here is that the HTTP specs really say almost nothing about how the redirect happens (what header fields to include, for instance). If it did, then yes, this should be covered as well.

[mnot]

Yes, that's the focus.

Perhaps a starting point would be to talk about how the HTTP-defined headers and other protocol artefacts are copied / not copied / modified when following a redirect -- even if for some we have to say "depends upon the application", so applications know they have to cover this.

[mnot]

Discussed in Montreal; support for trying.

[royfielding]

Seems reasonable, but where? At the top of 3xx section?

[mcmanus]

in bkk: agreed to add more explanatory language; discussion contained references to the case of relative uris after redirects

[mnot]

For reference, the relevant part of fetch.

Waiting for #165 to sort out hop-by-hop headers.