Better data structure for headers

[craff]

Headers may have much more that 10 fields and usually use common headers (see []https://en.wikipedia.org/wiki/List_of_HTTP_header_field])

We could encode header_field as type _ header_field = | Connection : 'a header_field | Content_type : 'a header_field | Cookie : Request.t header_field | Set-cookie : Response.t header_field | ... | Other : string -> 'a header_field

and the headers itself as a hashtable or other data structure a bit more efficient that association list ? Not clear to me what is the best data structure for medium size maps.

[c-cube]

I think it's probably overkill. I like the simplicity of current's structure :), and that it's easy to give a list of pairs.

I might be amenable to string Map.Make(String).t as the structure.

[craff]

I think another idea would be;

For request header some callbacks called for specific keys, avoiding searching the headers. Call backs could be organised in a tree. This would handle for instance cookies, keep_alive, etc ...

For response a bunch of function to set the most used headers.

[craff]

I think you can close this issue... I still believe we could improve parsing/handling of headers and cookies, but I don't think I will be working on that soon.

[c-cube]

I don't think we need something more complicated.