107 lines
3.5 KiB
Python
107 lines
3.5 KiB
Python
"""代理可用性验证。"""
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from concurrent.futures import ThreadPoolExecutor, as_completed
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from typing import Optional
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import requests
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from loguru import logger
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def verify_proxy_url(proxy_url: str, timeout: tuple = (3, 5)) -> tuple[bool, str]:
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"""
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验证代理是否可用，只验证斗鱼主站可达。
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超时缩短为 (3, 5) 以减少短效代理在验证期间过期浪费。
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Returns:
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(是否可用, 消息)
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"""
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proxies = {"http": proxy_url, "https": proxy_url}
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# ── 斗鱼主站可达性验证 ──
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try:
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response = requests.get(
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"https://www.douyu.com",
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proxies=proxies,
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timeout=timeout,
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headers={"User-Agent": "Mozilla/5.0"},
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)
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response.raise_for_status()
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return True, "代理可用 → 斗鱼可达"
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except Exception as exc:
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err_msg = str(exc)
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if "Tunnel connection failed" in err_msg or "503" in err_msg:
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detail = "代理拒绝连接（白名单可能未生效）"
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elif "timed out" in err_msg.lower():
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detail = "连接超时"
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else:
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detail = type(exc).__name__
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logger.debug(f"代理验证失败 [{proxy_url}]: 斗鱼主站不可达: {detail}")
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return False, detail
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def verify_proxies_concurrent(
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proxy_urls: list[str],
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timeout: tuple = (5, 8),
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max_workers: int = 5,
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return_all: bool = False,
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) -> tuple[Optional[str | list[str]], str]:
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"""
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并发验证多个代理 URL。
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Returns:
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return_all=False: (可用代理 URL 或 None, 消息)
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return_all=True: (可用代理 URL 列表或 None, 消息)
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"""
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if not proxy_urls:
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return None, "无代理可验证"
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if len(proxy_urls) == 1:
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ok, msg = verify_proxy_url(proxy_urls[0], timeout)
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if ok:
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return (proxy_urls if return_all else proxy_urls[0]), msg
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return None, msg
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if return_all:
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available: list[str] = []
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with ThreadPoolExecutor(
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max_workers=min(max_workers, len(proxy_urls))
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) as executor:
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future_map = {
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executor.submit(verify_proxy_url, proxy, timeout): proxy
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for proxy in proxy_urls
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}
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for future in as_completed(future_map):
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try:
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ok, _ = future.result()
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if ok:
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available.append(future_map[future])
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except Exception:
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continue
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if available:
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logger.success(
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f"并发验证找到 {len(available)}/{len(proxy_urls)} 个可用代理"
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)
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return available, f"找到 {len(available)} 个可用代理"
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return None, f"共 {len(proxy_urls)} 个代理均不可用"
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with ThreadPoolExecutor(max_workers=min(max_workers, len(proxy_urls))) as executor:
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future_map = {
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executor.submit(verify_proxy_url, proxy, timeout): proxy
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for proxy in proxy_urls
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}
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for future in as_completed(future_map):
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proxy_url = future_map[future]
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try:
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ok, msg = future.result()
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if ok:
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logger.success(f"并发验证找到可用代理: {proxy_url}")
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for item in future_map:
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if item != future:
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item.cancel()
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return proxy_url, msg
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except Exception:
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continue
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return None, f"共 {len(proxy_urls)} 个代理均不可用"
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