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42 lines
1.3 KiB
Python
42 lines
1.3 KiB
Python
import socket
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from app.helper import doh
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def test_enable_doh_reuses_cached_host_resolution(monkeypatch):
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"""
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同一 DoH 域名第二次解析应命中缓存，避免重复请求远端解析器。
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"""
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query_calls = []
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resolved_hosts = []
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def fake_query(resolver: str, host: str) -> str:
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query_calls.append((resolver, host))
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return "203.0.113.7"
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def fake_getaddrinfo(host: str, *args, **kwargs):
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resolved_hosts.append(host)
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return [(socket.AF_INET, socket.SOCK_STREAM, 0, "", (host, 0))]
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monkeypatch.setattr(doh.settings, "DOH_DOMAINS", "example.com")
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monkeypatch.setattr(doh.settings, "DOH_RESOLVERS", "resolver.test")
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monkeypatch.setattr(doh, "_doh_query", fake_query)
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monkeypatch.setattr(doh, "_orig_getaddrinfo", fake_getaddrinfo)
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original_getaddrinfo = socket.getaddrinfo
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with doh._doh_lock:
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doh._doh_cache.clear()
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try:
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doh.enable_doh(True)
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socket.getaddrinfo("example.com", None)
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socket.getaddrinfo("example.com", None)
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finally:
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socket.getaddrinfo = original_getaddrinfo
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with doh._doh_lock:
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doh._doh_cache.clear()
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assert query_calls == [("resolver.test", "example.com")]
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assert resolved_hosts == ["203.0.113.7", "203.0.113.7"]
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