HTTP Headers, the Complete Toolkit
🧰
Object-oriented headers. Kind of structured headers.
❓
Why
No matter if you are currently dealing with code using HTTP or IMAP (message, email), you should not worry about easily accessing and exploiting headers.
I have seen so many chunks of code trying to deal with these headers; often I saw this implementation:
# No more of that!
charset = headers['Content-Type'].split(';')[-1].split('=')[-1].replace('"', '')
Scroll down and see how you could do it from now on.
🔪
Features
kiss-headers is a basic library that allow you to handle headers as objects.
- A backwards-compatible syntax using bracket style.
- Capability to alter headers using simple, human-readable operator notation
+and-. - Flexibility if headers are from an email or HTTP, use as you need with one library.
- Ability to parse any object and extract recognized headers from it, it also supports UTF-8 encoded headers.
- Offer an opinionated way to un/serialize headers.
- Fully type-annotated.
- Provide great auto-completion in Python interpreter or any capable IDE.
- No dependencies. Never will be.
- 90% test coverage.
Plus all the features that you would expect from handling headers...
- Properties syntax for headers and attribute in a header.
- Supports headers and attributes OneToOne, OneToMany and ManySquashedIntoOne.
- Capable of parsing
bytes,fp,str,dict,email.Message,requests.Response,httpx._models.Responseandurllib3.HTTPResponse. - Automatically unquote and unfold the value of an attribute when retrieving it.
- Keep headers and attributes ordering.
- Case-insensitive with header name and attribute key.
- Character
-equal_in addition of above feature. - Any syntax you like, we like.
✨
Installation
Whatever you like, use pipenv or pip, it simply works. Requires Python 3.6+ installed.
pip install kiss-headers --upgrade
🍰
Usage
Quick start
parse_it() method takes bytes, str, fp, dict, email.Message or even a requests.Response or httpx._models.Response itself and returns a Headers object.
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
Do not forget that headers are not OneToOne. One header can be repeated multiple times and attributes can have multiple values within the same header.
from kiss_headers import parse_it
my_cookies = """set-cookie: 1P_JAR=2020-03-16-21; expires=Wed, 15-Apr-2020 21:27:31 GMT; path=/; domain=.google.fr; Secure; SameSite=none
set-cookie: CONSENT=WP.284b10; expires=Fri, 01-Jan-2038 00:00:00 GMT; path=/; domain=.google.fr"""
headers = parse_it(my_cookies)
type(headers.set_cookie) # output: list
headers.set_cookie[0].expires # output: Wed, 15-Apr-2020 21:27:31 GMT
headers.set_cookie[0]._1p_jar # output: 2020-03-16-21
headers.set_cookie[0]["1P_JAR"] # output: 2020-03-16-21
Since v2.1 you can transform an Header object to its target CustomHeader subclass to access more methods.
from kiss_headers import parse_it, get_polymorphic, SetCookie
my_cookies = """set-cookie: 1P_JAR=2020-03-16-21; expires=Wed, 15-Apr-2020 21:27:31 GMT; path=/; domain=.google.fr; Secure; SameSite=none
set-cookie: CONSENT=WP.284b10; expires=Fri, 01-Jan-2038 00:00:00 GMT; path=/; domain=.google.fr"""
headers = parse_it(my_cookies)
type(headers.set_cookie[0]) # output: Header
set_cookie = get_polymorphic(headers.set_cookie[0], SetCookie)
type(set_cookie) # output: SetCookie
set_cookie.get_cookie_name() # output: 1P_JAR
set_cookie.get_expire() # output: datetime(...)
Just a note: Accessing a header that has the same name as a reserved keyword must be done this way :
headers = parse_it('From: Ousret; origin=www.github.com\nIS: 1\nWhile: Not-True')
# this flavour
headers.from_ # to access From, just add a single underscore to it
# or.. just using :
headers['from']
✍️
Serialization
Since version 2.3.0 the package offer the possibility to un/serialize Headers.
from requests import get
from kiss_headers import parse_it, dumps
json_repr: str = dumps(
parse_it(
get("https://www.google.fr")
),
indent=4
)
print(json_repr) # See the result bellow
# Additionally, how to parse the JSON repr to Headers again
headers = parse_it(json_repr) # Yes! that easy!
{
"Date": [
{
"Tue, 02 Feb 2021 21:43:13 GMT": null
}
],
"Expires": [
{
"-1": null
}
],
"Cache-Control": [
{
"private": null
},
{
"max-age": "0"
}
],
"Content-Type": [
{
"text/html": null,
"charset": "ISO-8859-1"
}
],
"P3P": [
{
"CP": "This is not a P3P policy! See g.co/p3phelp for more info."
}
],
"Content-Encoding": [
{
"gzip": null
}
],
"Server": [
{
"gws": null
}
],
"X-XSS-Protection": [
{
"0": null
}
],
"X-Frame-Options": [
{
"SAMEORIGIN": null
}
],
"Set-Cookie": [
{
"NID": "208=D5XUqjrP9PNpiZu4laa_0xvy_IxBzQLtfxqeAqcPBgiY2y5sfSF51IFuXZnH0zDAF1KZ8x-0VsRyGOM0aStIzCUfdiPBOCxHSxUv39N0vwzku3aI2UkeRXhWw8-HWw5Ob41GB0PZi2coQsPM7ZEQ_fl9PlQ_ld1KrPA",
"expires": "Wed, 04-Aug-2021 21:43:13 GMT",
"path": "/",
"domain": ".google.fr",
"HttpOnly": null
},
{
"CONSENT": "PENDING+880",
"expires": "Fri, 01-Jan-2038 00:00:00 GMT",
"path": "/",
"domain": ".google.fr"
}
],
"Alt-Svc": [
{
"h3-29": ":443",
"ma": "2592000"
},
{
"h3-T051": ":443",
"ma": "2592000"
},
{
"h3-Q050": ":443",
"ma": "2592000"
},
{
"h3-Q046": ":443",
"ma": "2592000"
},
{
"h3-Q043": ":443",
"ma": "2592000"
},
{
"quic": ":443",
"ma": "2592000",
"v": "46,43"
}
],
"Transfer-Encoding": [
{
"chunked": null
}
]
}
Alternatively you may use from kiss_headers import parse_it, encode, decode to transform Headers to dict (instead of JSON) or the other way around. Understand that the dict returned in encode will differ from the method to_dict() in Headers.
🛠️
Create headers from objects
Introduced in the version 2.0, kiss-headers now allow you to create headers with more than 40+ ready-to-use, fully documented, header objects.
1st example usage
from kiss_headers import Headers, Authorization
from requests import get
response = get("https://httpbin.org/bearer", headers=Headers(Authorization("Bearer", "qwerty")))
print(response.status_code) # 200
2nd example usage
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)
raw_headers now retain the following :
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"
See the complete list of available header class in the full documentation. Also, you can create your own custom header object using the class kiss_headers.CustomHeader.
📜
Documentation
See the full documentation for advanced usages : www.kiss-headers.tech
👤
Contributing
Contributions, issues and feature requests are very much welcome.
Feel free to check issues page if you want to contribute.
Firstly, after getting your own local copy, run ./scripts/install to initialize your virtual environment. Then run ./scripts/check before you commit, make sure everything is still working.
Remember to keep it sweet and simple when contributing to this project.
📝
License
Copyright © 2020 Ahmed TAHRI @Ousret.
This project is MIT licensed.
![[Feature] More precise way to alter/handle attributes within Header](https://avatars.githubusercontent.com/u/9326700?v=4)
![[:bug:] breaks when using `curl --head` with a proxy](https://avatars.githubusercontent.com/u/36224762?v=4)
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