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Idea #1: The Racket library is inconsitent for client operations like get-pure-port
vs. web server. Examples:
- The former uses string?
The latter uses byte?
- The former has headers as one string? with exact-field and extract-all-fields.
The latter has headers in alists.
- The former handles transmitted data by passing it as bytes?
The latter's make-response/incremental gives you a data-writer proc (where an
output-port? would be more natural and convenient.)
Basically, much of what you learn on one side, is different (or even precisely
opposite) for the other. Many errors simply forgetting to use #"OK" vs. "OK".
So, let's come up with a consistent representation for requests and responses, and
used both by servers and clients.
Idea #2: Isomorphism between xexpr for the entity and the entire request or response.
xexprs are commonly used for the entity (HTTP "body"):
`(tag ([attr val] ...)
(body ...))
`(html (head ())
(body ()))
Why not wrap that in an x-expression representing the entire HTTP request or response
message. Treat the HTTP headers as the "attributes" and the HTTP entity is the "body".
Examples. All of these return #t for xexpr?
`(get ([method "GET"]
[header "value"])))
`(post ([method "POST"]
[Content-Type "application/x-www-form-urlencoded"])
(data ([first "bob"]
[last "jones"]))))
`(response ([Status "200" "OK"]
[Date "Mon Jan 1 1900 adsadsf"]
[Content-Length "43]
[Content-Type "text/xml"])
(html ()
(head ())
(body ()))))
Some other useful examples aren't strictly xexpr?, we bend the rules a bit.
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