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v/vlib/net/http/response.v

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// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
// Use of this source code is governed by an MIT license
// that can be found in the LICENSE file.
module http
import chunked
// Response represents the result of the request
pub struct Response {
pub mut:
text string
header Header
cookies map[string]string
status_code int
version Version
}
fn (mut resp Response) free() {
unsafe { resp.header.data.free() }
}
// Formats resp to bytes suitable for HTTP response transmission
pub fn (resp Response) bytes() []byte {
// TODO: build []byte directly; this uses two allocations
// TODO: cookies
return ('$resp.version $resp.status_code ${status_from_int(resp.status_code).str()}\r\n' +
'${resp.header.render(version: resp.version)}\r\n' +
'$resp.text').bytes()
}
// Parse a raw HTTP response into a Response object
pub fn parse_response(resp string) Response {
mut header := new_header()
// TODO: Cookie data type
mut cookies := map[string]string{}
first_header := resp.all_before('\n')
mut status_code := 0
if first_header.contains('HTTP/') {
val := first_header.find_between(' ', ' ')
status_code = val.int()
}
mut text := ''
// Build resp header map and separate the body
mut nl_pos := 3
mut i := 1
for {
old_pos := nl_pos
nl_pos = resp.index_after('\n', nl_pos + 1)
if nl_pos == -1 {
break
}
h := resp[old_pos + 1..nl_pos]
// End of headers
if h.len <= 1 {
text = resp[nl_pos + 1..]
break
}
i++
pos := h.index(':') or { continue }
mut key := h[..pos]
val := h[pos + 2..].trim_space()
header.add_custom(key, val) or { eprintln('$err; skipping header') }
}
// set cookies
for cookie in header.values(.set_cookie) {
parts := cookie.split_nth('=', 2)
cookies[parts[0]] = parts[1]
}
if header.get(.transfer_encoding) or { '' } == 'chunked' || header.get(.content_length) or { '' } == '' {
text = chunked.decode(text)
}
return Response{
status_code: status_code
header: header
cookies: cookies
text: text
}
}