httpx-pycurl 0.0.4

An httpx transport powered by pycurl

httpx-pycurl

httpx-pycurl provides an httpx transport that executes requests with pycurl. It combines the goodness of curl with the familiar httpx API, including support for http/2 and even non-http protocols built into curl. On my machine, AsyncPyCurlTransport performs better than httpx's default AsyncHttpTransport, taking approximately 75% of the time to fetch 60 files from a local nginx test server.

httpx-pycurl is in early development, but it passes most httpx tests and has good performance. A niquests-derived test uses asyncio.gather() to make 1000 http/2 requests to https://httpbingo.org/get. httpx-pycurl is about as fast.

# First run:
Fetch 1000x https://httpbingo.org/get
aiohttp: 1.029s
httpx: 1.369s
httpx_pycurl: 0.637s
niquests: 0.715s

# Second run:
Fetch 1000x https://httpbingo.org/get
aiohttp: 0.927s
httpx: 1.346s
httpx_pycurl: 0.677s
niquests: 0.655s

Install

pip install httpx-pycurl

Or with conda,

conda install -n base conda-pypi
conda pypi install httpx-pycurl

Usage

AsyncPyCurlTransport is the focus of this package. It uses the curl multi_socket interface to integrate curl with the asyncio event loop.

import httpx
from httpx_pycurl import AsyncPyCurlTransport

transport = AsyncPyCurlTransport(timeout=10.0)

async with httpx.AsyncClient(transport=transport) as client:
    responses = await asyncio.gather(*(client.get(url) for url in urls))

AsyncPyCurlTransport delegates SSL/TLS handling to curl and does not use Python's builtin ssl module. By default it calls certifi.where() to set root certificates. It is also possible to pass a custom path to the root certificates with AsyncPyCurlTransport(cainfo=ca_cert_path).

PyCurlTransport is not the focus of this project and is less likely to work. In the future it may delegate to AsyncPyCurlTransport.

import httpx
from httpx_pycurl import PyCurlTransport

transport = PyCurlTransport(timeout=10.0)

with httpx.Client(transport=transport) as client:
    response = client.get("https://example.com")
    print(response.status_code)
    print(response.text)

debug_transport = PyCurlTransport(
    verbose=True,
    debug_callback=lambda info_type, data: print(info_type, data),
)