933d9e1ddd
Avoid rebuilding _ProxyHandler + build_opener() on every request. Default-context callers (16 of 18 plugins) reuse one cached opener; custom-context callers still get a fresh one. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
143 lines
4.1 KiB
Python
143 lines
4.1 KiB
Python
"""Tests for the SOCKS5 proxy HTTP/TCP module."""
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import ssl
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import urllib.request
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from unittest.mock import MagicMock, patch
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import pytest
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from socks import SOCKS5
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import derp.http
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from derp.http import (
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_PROXY_ADDR,
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_PROXY_PORT,
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_get_opener,
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_ProxyHandler,
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build_opener,
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create_connection,
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)
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@pytest.fixture(autouse=True)
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def _reset_opener_cache():
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"""Clear cached opener between tests."""
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derp.http._default_opener = None
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yield
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derp.http._default_opener = None
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class TestProxyHandler:
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def test_uses_socks5(self):
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handler = _ProxyHandler()
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assert handler.args[0] == SOCKS5
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def test_proxy_address(self):
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handler = _ProxyHandler()
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assert handler.args[1] == _PROXY_ADDR
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assert handler.args[2] == _PROXY_PORT
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def test_rdns_enabled(self):
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handler = _ProxyHandler()
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assert handler.args[3] is True
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def test_default_ssl_context(self):
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handler = _ProxyHandler()
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assert isinstance(handler._ssl_context, ssl.SSLContext)
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def test_custom_ssl_context(self):
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ctx = ssl.create_default_context()
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ctx.check_hostname = False
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handler = _ProxyHandler(context=ctx)
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assert handler._ssl_context is ctx
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def test_is_https_handler(self):
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handler = _ProxyHandler()
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assert isinstance(handler, urllib.request.HTTPSHandler)
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class TestBuildOpener:
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def test_includes_proxy_handler(self):
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opener = build_opener()
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proxy = [h for h in opener.handlers if isinstance(h, _ProxyHandler)]
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assert len(proxy) == 1
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def test_passes_extra_handlers(self):
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class Custom(urllib.request.HTTPRedirectHandler):
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pass
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opener = build_opener(Custom)
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custom = [h for h in opener.handlers if isinstance(h, Custom)]
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assert len(custom) == 1
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def test_passes_ssl_context(self):
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ctx = ssl.create_default_context()
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ctx.check_hostname = False
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opener = build_opener(context=ctx)
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proxy = [h for h in opener.handlers if isinstance(h, _ProxyHandler)][0]
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assert proxy._ssl_context is ctx
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class TestOpenerCache:
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def test_default_opener_cached(self):
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a = _get_opener()
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b = _get_opener()
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assert a is b
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def test_custom_context_not_cached(self):
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ctx = ssl.create_default_context()
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a = _get_opener(context=ctx)
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b = _get_opener(context=ctx)
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assert a is not b
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def test_build_opener_no_args_returns_cached(self):
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a = build_opener()
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b = build_opener()
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assert a is b
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def test_build_opener_with_handlers_returns_fresh(self):
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class Custom(urllib.request.HTTPRedirectHandler):
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pass
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a = build_opener()
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b = build_opener(Custom)
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assert a is not b
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class TestCreateConnection:
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@patch("derp.http.socks.socksocket")
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def test_sets_socks5_proxy(self, mock_cls):
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sock = MagicMock()
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mock_cls.return_value = sock
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create_connection(("example.com", 443), timeout=5)
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sock.set_proxy.assert_called_once_with(
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SOCKS5, _PROXY_ADDR, _PROXY_PORT, rdns=True,
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)
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@patch("derp.http.socks.socksocket")
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def test_connects_to_target(self, mock_cls):
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sock = MagicMock()
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mock_cls.return_value = sock
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create_connection(("example.com", 443))
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sock.connect.assert_called_once_with(("example.com", 443))
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@patch("derp.http.socks.socksocket")
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def test_sets_timeout(self, mock_cls):
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sock = MagicMock()
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mock_cls.return_value = sock
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create_connection(("example.com", 80), timeout=7)
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sock.settimeout.assert_called_once_with(7)
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@patch("derp.http.socks.socksocket")
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def test_no_timeout_when_none(self, mock_cls):
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sock = MagicMock()
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mock_cls.return_value = sock
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create_connection(("example.com", 80))
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sock.settimeout.assert_not_called()
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@patch("derp.http.socks.socksocket")
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def test_returns_socket(self, mock_cls):
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sock = MagicMock()
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mock_cls.return_value = sock
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result = create_connection(("example.com", 443))
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assert result is sock
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