如何在 Python requests、httpx 和 aiohttp 中使用代理

# 轮换：每次建立新连接时获得一个新的美国住宅出口
http://USER-cc-us:PASS@res.proxy-cyber.com:9000

# 粘性会话：以 "job42" 为标识，将一个柏林住宅出口保持 30 分钟
http://USER-cc-de-city-berlin-sid-job42-ttl-30m:PASS@res.proxy-cyber.com:9000

# 使用远程 DNS 的 SOCKS5（socks5h），参数相同
socks5h://USER-cc-us:PASS@res.proxy-cyber.com:9001

import requests

PROXY = "http://USER-cc-us:PASS@res.proxy-cyber.com:9000"
proxies = {"http": PROXY, "https": PROXY}

# 一次请求，一个出口
r = requests.get("https://api.ipify.org", proxies=proxies, timeout=30)
print(r.text)

# 粘性流程：此会话的每次请求都使用同一个出口
sticky = "http://USER-cc-de-city-berlin-sid-cart42-ttl-15m:PASS@res.proxy-cyber.com:9000"
s = requests.Session()
s.proxies = {"http": sticky, "https": sticky}
s.get("https://example.com/product/1", timeout=30)
s.post("https://example.com/cart", json={"id": 1}, timeout=30)

import httpx

PROXY = "http://USER-cc-us:PASS@res.proxy-cyber.com:9000"

with httpx.Client(proxy=PROXY, timeout=30) as client:
    print(client.get("https://api.ipify.org").text)

# 异步模式：每个任务使用一个粘性出口
import asyncio

async def fetch(sid: str, url: str) -> str:
    proxy = f"http://USER-cc-us-sid-{sid}-ttl-10m:PASS@res.proxy-cyber.com:9000"
    async with httpx.AsyncClient(proxy=proxy, timeout=30) as client:
        return (await client.get(url)).text

asyncio.run(fetch("task1", "https://api.ipify.org"))

import aiohttp, asyncio

PROXY = "http://USER-cc-us:PASS@res.proxy-cyber.com:9000"

async def main():
    async with aiohttp.ClientSession() as session:
        async with session.get("https://api.ipify.org", proxy=PROXY, timeout=aiohttp.ClientTimeout(total=30)) as r:
            print(await r.text())

asyncio.run(main())