treqvshttpclient
treq is a Python library for making HTTP requests that provides a simple, convenient API for interacting with web services. It is inspired byt the popular requests library, but powered by Twisted asynchronous engine which allows promise based concurrency.
treq provides a simple, high-level API for making HTTP requests, including methods for GET, POST, PUT, DELETE, etc. It also allows for easy handling of JSON data, automatic decompression of gzipped responses, and connection pooling.
treq is a lightweight library and it's easy to use, it's a good choice for small to medium-sized projects where ease of use is more important than performance.
In web scraping treq isn't commonly used as it doesn't support HTTP2 but it's the only Twisted based HTTP client. treq is also based on callback/errback promises (like Scrapy) which can be easier to understand and maintain compared to asyncio's corountines.
HTTPClient is a Ruby gem that provides a simple and flexible interface for making HTTP requests. It's a full-featured HTTP client library with support for cookies, redirects, proxy, and more. It's built on top of the libwww-perl library, which is a widely-used, robust and well-documented library.
Features:
- methods like GET/HEAD/POST/* via HTTP/1.1.
- HTTPS(SSL), Cookies, proxy, authentication(Digest, NTLM, Basic), etc.
- asynchronous HTTP request, streaming HTTP request.
- debug mode CLI.
- by contrast with net/http in standard distribution;
- Cookies support
- MT-safe
- streaming POST (POST with File/IO)
- Digest auth
- Negotiate/NTLM auth for WWW-Authenticate (requires net/ntlm module; rubyntlm gem)
- NTLM auth for Proxy-Authenticate (requires 'win32/sspi' module; rubysspi gem)
- extensible with filter interface
- you don't have to care HTTP/1.1 persistent connection (httpclient cares instead of you)
Highlights
Example Use
from twisted.internet import reactor
from twisted.internet.task import react
from twisted.internet.defer import ensureDeferred
import treq
# treq can be used with twisted's reactor with callbacks
response_deferred = treq.get(
"http://httpbin.org/get"
)
# or POST
response_deferred = treq.post(
"http://httpbin.org/post",
json={"key": "value"}, # JSON
data={"key": "value"}, # Form Data
)
# add callback or errback
def handle_response(response):
print(response.code)
response.text().addCallback(lambda body: print(body))
def handle_error(failure):
print(failure)
# this callback will be called when request completes:
response_deferred.addCallback(handle_response)
# this errback will be called if request fails
response_deferred.addErrback(handle_error)
# this will be called if request completes or fails:
response_deferred.addBoth(lambda _: reactor.stop()) # close twisted once finished
if __name__ == '__main__':
reactor.run()
#Note that treq can also be used with async/await:
async def main():
# content reads response data and get sends a get request:
print(await treq.content(await treq.get("https://example.com/")))
if __name__ == '__main__':
react(lambda reactor: ensureDeferred(main()))
</div>
<div class="lib-example" markdown>
```ruby
require 'httpclient'
client = HTTPClient.new
# GET requests
response = client.get("http://httpbin.org/get")
puts response.content
# POST requests
data = { name: "value" }
response = client.post("http://httpbin.org/post", data)
puts response.content