symfony-httpvscurl-cffi
Symfony-http is a PHP library that provides a set of classes for working with HTTP requests and responses. It is part of the Symfony CMS framework, but can also be used independently.
Curl-cffi is a Python library for implementing curl-impersonate which is a
HTTP client that appears as one of popular web browsers like:
- Google Chrome
- Microsoft Edge
- Safari
- Firefox
Unlike requests and httpx which are native Python libraries, curl-cffi uses cURL and inherits it's powerful features
like extensive HTTP protocol support and detection patches for TLS and HTTP fingerprinting.
Using curl-cffi web scrapers can bypass TLS and HTTP fingerprinting.
Highlights
bypasshttp2tls-fingerprinthttp-fingerprintsyncasync
Example Use
<?php
use Symfony\Component\HttpClient\HttpClient;
// create a client object:
$client = HttpClient::create();
// sent GET request
$response = $client->request('GET', 'https://httpbin.org/get');
// or POST request
$response = $client->request('POST', 'https://httpbin.org/post', [
'headers' => [
'Content-Type' => 'application/json',
],
'json' => [
'name' => 'John Doe',
'email' => 'john.doe@example.com',
],
]);
// print response data:
$statusCode = $response->getStatusCode();
$content = $response->getContent();
echo "Status Code: $statusCode\n";
echo "Content: $content\n";
curl-cffi can be accessed as low-level curl client as well as an easy high-level HTTP client:
from curl_cffi import requests
response = requests.get('https://httpbin.org/json')
print(response.json())
# or using sessions
session = requests.Session()
response = session.get('https://httpbin.org/json')
# also supports async requests using asyncio
import asyncio
from curl_cffi.requests import AsyncSession
urls = [
"http://httpbin.org/html",
"http://httpbin.org/html",
"http://httpbin.org/html",
]
async with AsyncSession() as s:
tasks = []
for url in urls:
task = s.get(url)
tasks.append(task)
# scrape concurrently:
responses = await asyncio.gather(*tasks)
# also supports websocket connections
from curl_cffi.requests import Session, WebSocket
def on_message(ws: WebSocket, message):
print(message)
with Session() as s:
ws = s.ws_connect(
"wss://api.gemini.com/v1/marketdata/BTCUSD",
on_message=on_message,
)
ws.run_forever()