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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ""" Test suite for socketserver. """ import contextlib import io import os import select import signal import socket import tempfile import threading import unittest import socketserver import test.support from test.support import reap_children, reap_threads, verbose from test.support import socket_helper test.support.requires("network") TEST_STR = b"hello world\n" HOST = socket_helper.HOST HAVE_UNIX_SOCKETS = hasattr(socket, "AF_UNIX") requires_unix_sockets = unittest.skipUnless(HAVE_UNIX_SOCKETS, 'requires Unix sockets') HAVE_FORKING = hasattr(os, "fork") requires_forking = unittest.skipUnless(HAVE_FORKING, 'requires forking') def signal_alarm(n): """Call signal.alarm when it exists (i.e. not on Windows).""" if hasattr(signal, 'alarm'): signal.alarm(n) # Remember real select() to avoid interferences with mocking _real_select = select.select def receive(sock, n, timeout=test.support.SHORT_TIMEOUT): r, w, x = _real_select([sock], [], [], timeout) if sock in r: return sock.recv(n) else: raise RuntimeError("timed out on %r" % (sock,)) if HAVE_UNIX_SOCKETS and HAVE_FORKING: class ForkingUnixStreamServer(socketserver.ForkingMixIn, socketserver.UnixStreamServer): pass class ForkingUnixDatagramServer(socketserver.ForkingMixIn, socketserver.UnixDatagramServer): pass @contextlib.contextmanager def simple_subprocess(testcase): """Tests that a custom child process is not waited on (Issue 1540386)""" pid = os.fork() if pid == 0: # Don't raise an exception; it would be caught by the test harness. os._exit(72) try: yield None except: raise finally: test.support.wait_process(pid, exitcode=72) class SocketServerTest(unittest.TestCase): """Test all socket servers.""" def setUp(self): signal_alarm(60) # Kill deadlocks after 60 seconds. self.port_seed = 0 self.test_files = [] def tearDown(self): signal_alarm(0) # Didn't deadlock. reap_children() for fn in self.test_files: try: os.remove(fn) except OSError: pass self.test_files[:] = [] def pickaddr(self, proto): if proto == socket.AF_INET: return (HOST, 0) else: # XXX: We need a way to tell AF_UNIX to pick its own name # like AF_INET provides port==0. dir = None fn = tempfile.mktemp(prefix='unix_socket.', dir=dir) self.test_files.append(fn) return fn def make_server(self, addr, svrcls, hdlrbase): class MyServer(svrcls): def handle_error(self, request, client_address): self.close_request(request) raise class MyHandler(hdlrbase): def handle(self): line = self.rfile.readline() self.wfile.write(line) if verbose: print("creating server") try: server = MyServer(addr, MyHandler) except PermissionError as e: # Issue 29184: cannot bind() a Unix socket on Android. self.skipTest('Cannot create server (%s, %s): %s' % (svrcls, addr, e)) self.assertEqual(server.server_address, server.socket.getsockname()) return server @reap_threads def run_server(self, svrcls, hdlrbase, testfunc): server = self.make_server(self.pickaddr(svrcls.address_family), svrcls, hdlrbase) # We had the OS pick a port, so pull the real address out of # the server. addr = server.server_address if verbose: print("ADDR =", addr) print("CLASS =", svrcls) t = threading.Thread( name='%s serving' % svrcls, target=server.serve_forever, # Short poll interval to make the test finish quickly. # Time between requests is short enough that we won't wake # up spuriously too many times. kwargs={'poll_interval':0.01}) t.daemon = True # In case this function raises. t.start() if verbose: print("server running") for i in range(3): if verbose: print("test client", i) testfunc(svrcls.address_family, addr) if verbose: print("waiting for server") server.shutdown() t.join() server.server_close() self.assertEqual(-1, server.socket.fileno()) if HAVE_FORKING and isinstance(server, socketserver.ForkingMixIn): # bpo-31151: Check that ForkingMixIn.server_close() waits until # all children completed self.assertFalse(server.active_children) if verbose: print("done") def stream_examine(self, proto, addr): with socket.socket(proto, socket.SOCK_STREAM) as s: s.connect(addr) s.sendall(TEST_STR) buf = data = receive(s, 100) while data and b'\n' not in buf: data = receive(s, 100) buf += data self.assertEqual(buf, TEST_STR) def dgram_examine(self, proto, addr): with socket.socket(proto, socket.SOCK_DGRAM) as s: if HAVE_UNIX_SOCKETS and proto == socket.AF_UNIX: s.bind(self.pickaddr(proto)) s.sendto(TEST_STR, addr) buf = data = receive(s, 100) while data and b'\n' not in buf: data = receive(s, 100) buf += data self.assertEqual(buf, TEST_STR) def test_TCPServer(self): self.run_server(socketserver.TCPServer, socketserver.StreamRequestHandler, self.stream_examine) def test_ThreadingTCPServer(self): self.run_server(socketserver.ThreadingTCPServer, socketserver.StreamRequestHandler, self.stream_examine) @requires_forking def test_ForkingTCPServer(self): with simple_subprocess(self): self.run_server(socketserver.ForkingTCPServer, socketserver.StreamRequestHandler, self.stream_examine) @requires_unix_sockets def test_UnixStreamServer(self): self.run_server(socketserver.UnixStreamServer, socketserver.StreamRequestHandler, self.stream_examine) @requires_unix_sockets def test_ThreadingUnixStreamServer(self): self.run_server(socketserver.ThreadingUnixStreamServer, socketserver.StreamRequestHandler, self.stream_examine) @requires_unix_sockets @requires_forking def test_ForkingUnixStreamServer(self): with simple_subprocess(self): self.run_server(ForkingUnixStreamServer, socketserver.StreamRequestHandler, self.stream_examine) def test_UDPServer(self): self.run_server(socketserver.UDPServer, socketserver.DatagramRequestHandler, self.dgram_examine) def test_ThreadingUDPServer(self): self.run_server(socketserver.ThreadingUDPServer, socketserver.DatagramRequestHandler, self.dgram_examine) @requires_forking def test_ForkingUDPServer(self): with simple_subprocess(self): self.run_server(socketserver.ForkingUDPServer, socketserver.DatagramRequestHandler, self.dgram_examine) @requires_unix_sockets def test_UnixDatagramServer(self): self.run_server(socketserver.UnixDatagramServer, socketserver.DatagramRequestHandler, self.dgram_examine) @requires_unix_sockets def test_ThreadingUnixDatagramServer(self): self.run_server(socketserver.ThreadingUnixDatagramServer, socketserver.DatagramRequestHandler, self.dgram_examine) @requires_unix_sockets @requires_forking def test_ForkingUnixDatagramServer(self): self.run_server(ForkingUnixDatagramServer, socketserver.DatagramRequestHandler, self.dgram_examine) @reap_threads def test_shutdown(self): # Issue #2302: shutdown() should always succeed in making an # other thread leave serve_forever(). class MyServer(socketserver.TCPServer): pass class MyHandler(socketserver.StreamRequestHandler): pass threads = [] for i in range(20): s = MyServer((HOST, 0), MyHandler) t = threading.Thread( name='MyServer serving', target=s.serve_forever, kwargs={'poll_interval':0.01}) t.daemon = True # In case this function raises. threads.append((t, s)) for t, s in threads: t.start() s.shutdown() for t, s in threads: t.join() s.server_close() def test_close_immediately(self): class MyServer(socketserver.ThreadingMixIn, socketserver.TCPServer): pass server = MyServer((HOST, 0), lambda: None) server.server_close() def test_tcpserver_bind_leak(self): # Issue #22435: the server socket wouldn't be closed if bind()/listen() # failed. # Create many servers for which bind() will fail, to see if this result # in FD exhaustion. for i in range(1024): with self.assertRaises(OverflowError): socketserver.TCPServer((HOST, -1), socketserver.StreamRequestHandler) def test_context_manager(self): with socketserver.TCPServer((HOST, 0), socketserver.StreamRequestHandler) as server: pass self.assertEqual(-1, server.socket.fileno()) class ErrorHandlerTest(unittest.TestCase): """Test that the servers pass normal exceptions from the handler to handle_error(), and that exiting exceptions like SystemExit and KeyboardInterrupt are not passed.""" def tearDown(self): test.support.unlink(test.support.TESTFN) def test_sync_handled(self): BaseErrorTestServer(ValueError) self.check_result(handled=True) def test_sync_not_handled(self): with self.assertRaises(SystemExit): BaseErrorTestServer(SystemExit) self.check_result(handled=False) def test_threading_handled(self): ThreadingErrorTestServer(ValueError) self.check_result(handled=True) def test_threading_not_handled(self): ThreadingErrorTestServer(SystemExit) self.check_result(handled=False) @requires_forking def test_forking_handled(self): ForkingErrorTestServer(ValueError) self.check_result(handled=True) @requires_forking def test_forking_not_handled(self): ForkingErrorTestServer(SystemExit) self.check_result(handled=False) def check_result(self, handled): with open(test.support.TESTFN) as log: expected = 'Handler called\n' + 'Error handled\n' * handled self.assertEqual(log.read(), expected) class BaseErrorTestServer(socketserver.TCPServer): def __init__(self, exception): self.exception = exception super().__init__((HOST, 0), BadHandler) with socket.create_connection(self.server_address): pass try: self.handle_request() finally: self.server_close() self.wait_done() def handle_error(self, request, client_address): with open(test.support.TESTFN, 'a') as log: log.write('Error handled\n') def wait_done(self): pass class BadHandler(socketserver.BaseRequestHandler): def handle(self): with open(test.support.TESTFN, 'a') as log: log.write('Handler called\n') raise self.server.exception('Test error') class ThreadingErrorTestServer(socketserver.ThreadingMixIn, BaseErrorTestServer): def __init__(self, *pos, **kw): self.done = threading.Event() super().__init__(*pos, **kw) def shutdown_request(self, *pos, **kw): super().shutdown_request(*pos, **kw) self.done.set() def wait_done(self): self.done.wait() if HAVE_FORKING: class ForkingErrorTestServer(socketserver.ForkingMixIn, BaseErrorTestServer): pass class SocketWriterTest(unittest.TestCase): def test_basics(self): class Handler(socketserver.StreamRequestHandler): def handle(self): self.server.wfile = self.wfile self.server.wfile_fileno = self.wfile.fileno() self.server.request_fileno = self.request.fileno() server = socketserver.TCPServer((HOST, 0), Handler) self.addCleanup(server.server_close) s = socket.socket( server.address_family, socket.SOCK_STREAM, socket.IPPROTO_TCP) with s: s.connect(server.server_address) server.handle_request() self.assertIsInstance(server.wfile, io.BufferedIOBase) self.assertEqual(server.wfile_fileno, server.request_fileno) def test_write(self): # Test that wfile.write() sends data immediately, and that it does # not truncate sends when interrupted by a Unix signal pthread_kill = test.support.get_attribute(signal, 'pthread_kill') class Handler(socketserver.StreamRequestHandler): def handle(self): self.server.sent1 = self.wfile.write(b'write data\n') # Should be sent immediately, without requiring flush() self.server.received = self.rfile.readline() big_chunk = b'\0' * test.support.SOCK_MAX_SIZE self.server.sent2 = self.wfile.write(big_chunk) server = socketserver.TCPServer((HOST, 0), Handler) self.addCleanup(server.server_close) interrupted = threading.Event() def signal_handler(signum, frame): interrupted.set() original = signal.signal(signal.SIGUSR1, signal_handler) self.addCleanup(signal.signal, signal.SIGUSR1, original) response1 = None received2 = None main_thread = threading.get_ident() def run_client(): s = socket.socket(server.address_family, socket.SOCK_STREAM, socket.IPPROTO_TCP) with s, s.makefile('rb') as reader: s.connect(server.server_address) nonlocal response1 response1 = reader.readline() s.sendall(b'client response\n') reader.read(100) # The main thread should now be blocking in a send() syscall. # But in theory, it could get interrupted by other signals, # and then retried. So keep sending the signal in a loop, in # case an earlier signal happens to be delivered at an # inconvenient moment. while True: pthread_kill(main_thread, signal.SIGUSR1) if interrupted.wait(timeout=float(1)): break nonlocal received2 received2 = len(reader.read()) background = threading.Thread(target=run_client) background.start() server.handle_request() background.join() self.assertEqual(server.sent1, len(response1)) self.assertEqual(response1, b'write data\n') self.assertEqual(server.received, b'client response\n') self.assertEqual(server.sent2, test.support.SOCK_MAX_SIZE) self.assertEqual(received2, test.support.SOCK_MAX_SIZE - 100) class MiscTestCase(unittest.TestCase): def test_all(self): # objects defined in the module should be in __all__ expected = [] for name in dir(socketserver): if not name.startswith('_'): mod_object = getattr(socketserver, name) if getattr(mod_object, '__module__', None) == 'socketserver': expected.append(name) self.assertCountEqual(socketserver.__all__, expected) def test_shutdown_request_called_if_verify_request_false(self): # Issue #26309: BaseServer should call shutdown_request even if # verify_request is False class MyServer(socketserver.TCPServer): def verify_request(self, request, client_address): return False shutdown_called = 0 def shutdown_request(self, request): self.shutdown_called += 1 socketserver.TCPServer.shutdown_request(self, request) server = MyServer((HOST, 0), socketserver.StreamRequestHandler) s = socket.socket(server.address_family, socket.SOCK_STREAM) s.connect(server.server_address) s.close() server.handle_request() self.assertEqual(server.shutdown_called, 1) server.server_close() def test_threads_reaped(self): """ In #37193, users reported a memory leak due to the saving of every request thread. Ensure that not all threads are kept forever. """ class MyServer(socketserver.ThreadingMixIn, socketserver.TCPServer): pass server = MyServer((HOST, 0), socketserver.StreamRequestHandler) for n in range(10): with socket.create_connection(server.server_address): server.handle_request() self.assertLess(len(server._threads), 10) server.server_close() if __name__ == "__main__": unittest.main()