31
30
load_tests = load_tests_apply_scenarios
34
def portable_socket_pair():
35
"""Return a pair of TCP sockets connected to each other.
37
Unlike socket.socketpair, this should work on Windows.
39
listen_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
40
listen_sock.bind(('127.0.0.1', 0))
42
client_sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
43
client_sock.connect(listen_sock.getsockname())
44
server_sock, addr = listen_sock.accept()
46
return server_sock, client_sock
49
33
class TCPClient(object):
51
35
def __init__(self):
85
69
while not self.done:
86
70
self.handle_connection()
89
# TODO: We should be buffering any extra data sent, etc. However, in
90
# practice, we don't send extra content, so we haven't bothered
91
# to implement it yet.
92
req = self.request.recv(4096)
93
# An empty string is allowed, to indicate the end of the connection
94
if not req or (req.endswith('\n') and req.count('\n') == 1):
96
raise ValueError('[%r] not a simple line' % (req,))
98
72
def handle_connection(self):
73
req = self.rfile.readline()
102
76
elif req == 'ping\n':
103
self.request.sendall('pong\n')
77
self.wfile.write('pong\n')
105
79
raise ValueError('[%s] not understood' % req)
108
82
class TestTCPServerInAThread(tests.TestCase):
111
85
(name, {'server_class': getattr(test_server, name)})
113
87
('TestingTCPServer', 'TestingThreadingTCPServer')]
117
91
self.server_class = server_class
118
92
if connection_handler_class is None:
119
93
connection_handler_class = TCPConnectionHandler
120
server = test_server.TestingTCPServerInAThread(
94
server = test_server.TestingTCPServerInAThread(
121
95
('localhost', 0), self.server_class, connection_handler_class)
122
96
server.start_server()
123
97
self.addCleanup(server.stop_server)
181
155
# The server won't fail until a client connect
182
156
client = self.get_client()
183
157
client.connect((server.host, server.port))
184
# We make sure the server wants to handle a request, but the request is
185
# guaranteed to fail. However, the server should make sure that the
186
# connection gets closed, and stop_server should then raise the
187
# original exception.
188
client.write('ping\n')
190
self.assertEqual('', client.read())
191
except socket.error, e:
192
# On Windows, failing during 'handle' means we get
193
# 'forced-close-of-connection'. Possibly because we haven't
194
# processed the write request before we close the socket.
195
WSAECONNRESET = 10054
196
if e.errno in (WSAECONNRESET,):
159
# Now we must force the server to answer by sending the request and
160
# waiting for some answer. But since we don't control when the
161
# server thread will be given cycles, we don't control either
162
# whether our reads or writes may hang.
163
client.sock.settimeout(0.1)
164
client.write('ping\n')
198
168
# Now the server has raised the exception in its own thread
199
169
self.assertRaises(CantConnect, server.stop_server)
213
183
class FailingDuringResponseHandler(TCPConnectionHandler):
215
# We use 'request' instead of 'self' below because the test matters
216
# more and we need a container to properly set connection_thread.
217
185
def handle_connection(request):
218
req = request.readline()
186
req = request.rfile.readline()
219
187
# Capture the thread and make it use 'caught' so we can wait on
220
# the event that will be set when the exception is caught. We
188
# the even that will be set when the exception is caught. We
221
189
# also capture the thread to know where to look.
222
190
self.connection_thread = threading.currentThread()
223
191
self.connection_thread.set_sync_event(caught)
230
198
client.write('ping\n')
231
199
# Wait for the exception to be caught
233
self.assertEqual('', client.read()) # connection closed
234
201
# Check that the connection thread did catch the exception,
235
202
# http://pad.lv/869366 was wrongly checking the server thread which
236
203
# works for TestingTCPServer where the connection is handled in the
237
# same thread than the server one but was racy for
238
# TestingThreadingTCPServer. Since the connection thread detaches
239
# itself before handling the request, we are guaranteed that the
240
# exception won't leak into the server thread anymore.
241
self.assertRaises(FailToRespond,
242
self.connection_thread.pending_exception)
204
# same thread than the server one but is racy for
205
# TestingThreadingTCPServer where the server thread may be in a
206
# blocking accept() call (or not).
208
self.connection_thread.pending_exception()
209
except FailToRespond:
210
# Great, the test succeeded
213
# If the exception is not in the connection thread anymore, it's in
215
server.server.stopped.wait()
216
# The exception is available now
217
self.assertRaises(FailToRespond, server.pending_exception)
244
219
def test_exception_swallowed_while_serving(self):
245
220
# We need to ensure the exception has been caught
255
230
class FailingWhileServingConnectionHandler(TCPConnectionHandler):
257
# We use 'request' instead of 'self' below because the test matters
258
# more and we need a container to properly set connection_thread.
259
232
def handle(request):
260
233
# Capture the thread and make it use 'caught' so we can wait on
261
# the event that will be set when the exception is caught. We
234
# the even that will be set when the exception is caught. We
262
235
# also capture the thread to know where to look.
263
236
self.connection_thread = threading.currentThread()
264
237
self.connection_thread.set_sync_event(caught)
274
246
client.connect((server.host, server.port))
275
247
# Wait for the exception to be caught
277
self.assertEqual('', client.read()) # connection closed
278
249
# The connection wasn't served properly but the exception should have
279
250
# been swallowed (see test_server_crash_while_responding remark about
280
251
# http://pad.lv/869366 explaining why we can't check the server thread
281
252
# here). More precisely, the exception *has* been caught and captured
282
253
# but it is cleared when joining the thread (or trying to acquire the
283
254
# exception) and as such won't propagate to the server thread.
284
self.assertIs(None, self.connection_thread.pending_exception())
285
self.assertIs(None, server.pending_exception())
287
def test_handle_request_closes_if_it_doesnt_process(self):
288
server = self.get_server()
289
client = self.get_client()
290
server.server.serving = False
291
client.connect((server.host, server.port))
292
self.assertEqual('', client.read())
295
class TestTestingSmartServer(tests.TestCase):
297
def test_sets_client_timeout(self):
298
server = test_server.TestingSmartServer(('localhost', 0), None, None,
299
root_client_path='/no-such-client/path')
300
self.assertEqual(test_server._DEFAULT_TESTING_CLIENT_TIMEOUT,
301
server._client_timeout)
302
sock = socket.socket()
303
h = server._make_handler(sock)
304
self.assertEqual(test_server._DEFAULT_TESTING_CLIENT_TIMEOUT,
308
class FakeServer(object):
309
"""Minimal implementation to pass to TestingSmartConnectionHandler"""
310
backing_transport = None
311
root_client_path = '/'
314
class TestTestingSmartConnectionHandler(tests.TestCase):
316
def test_connection_timeout_suppressed(self):
317
self.overrideAttr(test_server, '_DEFAULT_TESTING_CLIENT_TIMEOUT', 0.01)
319
server_sock, client_sock = portable_socket_pair()
320
# This should timeout quickly, but not generate an exception.
321
handler = test_server.TestingSmartConnectionHandler(server_sock,
322
server_sock.getpeername(), s)
324
def test_connection_shutdown_while_serving_no_error(self):
326
server_sock, client_sock = portable_socket_pair()
327
class ShutdownConnectionHandler(
328
test_server.TestingSmartConnectionHandler):
330
def _build_protocol(self):
332
return super(ShutdownConnectionHandler, self)._build_protocol()
333
# This should trigger shutdown after the entering _build_protocol, and
334
# we should exit cleanly, without raising an exception.
335
handler = ShutdownConnectionHandler(server_sock,
336
server_sock.getpeername(), s)
255
self.connection_thread.pending_exception()
256
server.pending_exception()
added
removed
bzrlib/tests/test_test_server.py
