Parse raw HTTP Headers

Question

I have a string of raw HTTP and I would like to represent the fields in an object. Is there any way to parse the individual headers from an HTTP string?

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Answer 1

They is another way, simpler and safer way to handle headers. More object oriented. With no need for manual parsing.

Short demo.

1. Parse them

From str, bytes, fp, dict, requests.Response, email.Message, httpx.Response, urllib3.HTTPResponse.

from requests import get
from kiss_headers import parse_it

response = get('https://www.google.fr')
headers = parse_it(response)

headers.content_type.charset  # output: ISO-8859-1
# Its the same as
headers["content-type"]["charset"]  # output: ISO-8859-1

2. Build them

This

from kiss_headers import *

headers = (
    Host("developer.mozilla.org")
    + UserAgent(
        "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:50.0) Gecko/20100101 Firefox/50.0"
    )
    + Accept("text/html")
    + Accept("application/xhtml+xml")
    + Accept("application/xml", qualifier=0.9)
    + Accept(qualifier=0.8)
    + AcceptLanguage("en-US")
    + AcceptLanguage("en", qualifier=0.5)
    + AcceptEncoding("gzip")
    + AcceptEncoding("deflate")
    + AcceptEncoding("br")
    + Referer("https://developer.mozilla.org/testpage.html")
    + Connection(should_keep_alive=True)
    + UpgradeInsecureRequests()
    + IfModifiedSince("Mon, 18 Jul 2016 02:36:04 GMT")
    + IfNoneMatch("c561c68d0ba92bbeb8b0fff2a9199f722e3a621a")
    + CacheControl(max_age=0)
)

raw_headers = str(headers)

Will become

Host: developer.mozilla.org
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:50.0) Gecko/20100101 Firefox/50.0
Accept: text/html, application/xhtml+xml, application/xml; q="0.9", */*; q="0.8"
Accept-Language: en-US, en; q="0.5"
Accept-Encoding: gzip, deflate, br
Referer: https://developer.mozilla.org/testpage.html
Connection: keep-alive
Upgrade-Insecure-Requests: 1
If-Modified-Since: Mon, 18 Jul 2016 02:36:04 GMT
If-None-Match: "c561c68d0ba92bbeb8b0fff2a9199f722e3a621a"
Cache-Control: max-age="0"

Documentation for the kiss-headers library.