cpython/Lib/test/test_socket.py
2004-05-31 03:09:25 +00:00

775 lines
25 KiB
Python

#!/usr/bin/env python
import unittest
from test import test_support
import socket
import select
import time
import thread, threading
import Queue
import sys
from weakref import proxy
PORT = 50007
HOST = 'localhost'
MSG = 'Michael Gilfix was here\n'
class SocketTCPTest(unittest.TestCase):
def setUp(self):
self.serv = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.serv.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.serv.bind((HOST, PORT))
self.serv.listen(1)
def tearDown(self):
self.serv.close()
self.serv = None
class SocketUDPTest(unittest.TestCase):
def setUp(self):
self.serv = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.serv.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.serv.bind((HOST, PORT))
def tearDown(self):
self.serv.close()
self.serv = None
class ThreadableTest:
"""Threadable Test class
The ThreadableTest class makes it easy to create a threaded
client/server pair from an existing unit test. To create a
new threaded class from an existing unit test, use multiple
inheritance:
class NewClass (OldClass, ThreadableTest):
pass
This class defines two new fixture functions with obvious
purposes for overriding:
clientSetUp ()
clientTearDown ()
Any new test functions within the class must then define
tests in pairs, where the test name is preceeded with a
'_' to indicate the client portion of the test. Ex:
def testFoo(self):
# Server portion
def _testFoo(self):
# Client portion
Any exceptions raised by the clients during their tests
are caught and transferred to the main thread to alert
the testing framework.
Note, the server setup function cannot call any blocking
functions that rely on the client thread during setup,
unless serverExplicityReady() is called just before
the blocking call (such as in setting up a client/server
connection and performing the accept() in setUp().
"""
def __init__(self):
# Swap the true setup function
self.__setUp = self.setUp
self.__tearDown = self.tearDown
self.setUp = self._setUp
self.tearDown = self._tearDown
def serverExplicitReady(self):
"""This method allows the server to explicitly indicate that
it wants the client thread to proceed. This is useful if the
server is about to execute a blocking routine that is
dependent upon the client thread during its setup routine."""
self.server_ready.set()
def _setUp(self):
self.server_ready = threading.Event()
self.client_ready = threading.Event()
self.done = threading.Event()
self.queue = Queue.Queue(1)
# Do some munging to start the client test.
methodname = self.id()
i = methodname.rfind('.')
methodname = methodname[i+1:]
test_method = getattr(self, '_' + methodname)
self.client_thread = thread.start_new_thread(
self.clientRun, (test_method,))
self.__setUp()
if not self.server_ready.isSet():
self.server_ready.set()
self.client_ready.wait()
def _tearDown(self):
self.__tearDown()
self.done.wait()
if not self.queue.empty():
msg = self.queue.get()
self.fail(msg)
def clientRun(self, test_func):
self.server_ready.wait()
self.client_ready.set()
self.clientSetUp()
if not callable(test_func):
raise TypeError, "test_func must be a callable function"
try:
test_func()
except Exception, strerror:
self.queue.put(strerror)
self.clientTearDown()
def clientSetUp(self):
raise NotImplementedError, "clientSetUp must be implemented."
def clientTearDown(self):
self.done.set()
thread.exit()
class ThreadedTCPSocketTest(SocketTCPTest, ThreadableTest):
def __init__(self, methodName='runTest'):
SocketTCPTest.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def clientSetUp(self):
self.cli = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
def clientTearDown(self):
self.cli.close()
self.cli = None
ThreadableTest.clientTearDown(self)
class ThreadedUDPSocketTest(SocketUDPTest, ThreadableTest):
def __init__(self, methodName='runTest'):
SocketUDPTest.__init__(self, methodName=methodName)
ThreadableTest.__init__(self)
def clientSetUp(self):
self.cli = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
class SocketConnectedTest(ThreadedTCPSocketTest):
def __init__(self, methodName='runTest'):
ThreadedTCPSocketTest.__init__(self, methodName=methodName)
def setUp(self):
ThreadedTCPSocketTest.setUp(self)
# Indicate explicitly we're ready for the client thread to
# proceed and then perform the blocking call to accept
self.serverExplicitReady()
conn, addr = self.serv.accept()
self.cli_conn = conn
def tearDown(self):
self.cli_conn.close()
self.cli_conn = None
ThreadedTCPSocketTest.tearDown(self)
def clientSetUp(self):
ThreadedTCPSocketTest.clientSetUp(self)
self.cli.connect((HOST, PORT))
self.serv_conn = self.cli
def clientTearDown(self):
self.serv_conn.close()
self.serv_conn = None
ThreadedTCPSocketTest.clientTearDown(self)
#######################################################################
## Begin Tests
class GeneralModuleTests(unittest.TestCase):
def test_weakref(self):
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
p = proxy(s)
self.assertEqual(p.fileno(), s.fileno())
s.close()
s = None
try:
p.fileno()
except ReferenceError:
pass
else:
self.fail('Socket proxy still exists')
def testSocketError(self):
# Testing socket module exceptions
def raise_error(*args, **kwargs):
raise socket.error
def raise_herror(*args, **kwargs):
raise socket.herror
def raise_gaierror(*args, **kwargs):
raise socket.gaierror
self.failUnlessRaises(socket.error, raise_error,
"Error raising socket exception.")
self.failUnlessRaises(socket.error, raise_herror,
"Error raising socket exception.")
self.failUnlessRaises(socket.error, raise_gaierror,
"Error raising socket exception.")
def testCrucialConstants(self):
# Testing for mission critical constants
socket.AF_INET
socket.SOCK_STREAM
socket.SOCK_DGRAM
socket.SOCK_RAW
socket.SOCK_RDM
socket.SOCK_SEQPACKET
socket.SOL_SOCKET
socket.SO_REUSEADDR
def testHostnameRes(self):
# Testing hostname resolution mechanisms
hostname = socket.gethostname()
try:
ip = socket.gethostbyname(hostname)
except socket.error:
# Probably name lookup wasn't set up right; skip this test
return
self.assert_(ip.find('.') >= 0, "Error resolving host to ip.")
try:
hname, aliases, ipaddrs = socket.gethostbyaddr(ip)
except socket.error:
# Probably a similar problem as above; skip this test
return
all_host_names = [hname] + aliases
fqhn = socket.getfqdn()
if not fqhn in all_host_names:
self.fail("Error testing host resolution mechanisms.")
def testRefCountGetNameInfo(self):
# Testing reference count for getnameinfo
import sys
if hasattr(sys, "getrefcount"):
try:
# On some versions, this loses a reference
orig = sys.getrefcount(__name__)
socket.getnameinfo(__name__,0)
except SystemError:
if sys.getrefcount(__name__) <> orig:
self.fail("socket.getnameinfo loses a reference")
def testInterpreterCrash(self):
# Making sure getnameinfo doesn't crash the interpreter
try:
# On some versions, this crashes the interpreter.
socket.getnameinfo(('x', 0, 0, 0), 0)
except socket.error:
pass
def testNtoH(self):
# This just checks that htons etc. are their own inverse,
# when looking at the lower 16 or 32 bits.
sizes = {socket.htonl: 32, socket.ntohl: 32,
socket.htons: 16, socket.ntohs: 16}
for func, size in sizes.items():
mask = (1L<<size) - 1
for i in (0, 1, 0xffff, ~0xffff, 2, 0x01234567, 0x76543210):
self.assertEqual(i & mask, func(func(i&mask)) & mask)
swapped = func(mask)
self.assertEqual(swapped & mask, mask)
self.assertRaises(OverflowError, func, 1L<<34)
def testGetServByName(self):
# Testing getservbyname()
# try a few protocols - not everyone has telnet enabled
for proto in ("telnet", "ssh", "www", "ftp"):
try:
socket.getservbyname(proto, 'tcp')
break
except socket.error:
pass
try:
socket.getservbyname(proto, 'udp')
break
except socket.error:
pass
else:
raise socket.error
def testDefaultTimeout(self):
# Testing default timeout
# The default timeout should initially be None
self.assertEqual(socket.getdefaulttimeout(), None)
s = socket.socket()
self.assertEqual(s.gettimeout(), None)
s.close()
# Set the default timeout to 10, and see if it propagates
socket.setdefaulttimeout(10)
self.assertEqual(socket.getdefaulttimeout(), 10)
s = socket.socket()
self.assertEqual(s.gettimeout(), 10)
s.close()
# Reset the default timeout to None, and see if it propagates
socket.setdefaulttimeout(None)
self.assertEqual(socket.getdefaulttimeout(), None)
s = socket.socket()
self.assertEqual(s.gettimeout(), None)
s.close()
# Check that setting it to an invalid value raises ValueError
self.assertRaises(ValueError, socket.setdefaulttimeout, -1)
# Check that setting it to an invalid type raises TypeError
self.assertRaises(TypeError, socket.setdefaulttimeout, "spam")
def testIPv4toString(self):
if not hasattr(socket, 'inet_pton'):
return # No inet_pton() on this platform
from socket import inet_aton as f, inet_pton, AF_INET
g = lambda a: inet_pton(AF_INET, a)
self.assertEquals('\x00\x00\x00\x00', f('0.0.0.0'))
self.assertEquals('\xff\x00\xff\x00', f('255.0.255.0'))
self.assertEquals('\xaa\xaa\xaa\xaa', f('170.170.170.170'))
self.assertEquals('\x01\x02\x03\x04', f('1.2.3.4'))
self.assertEquals('\x00\x00\x00\x00', g('0.0.0.0'))
self.assertEquals('\xff\x00\xff\x00', g('255.0.255.0'))
self.assertEquals('\xaa\xaa\xaa\xaa', g('170.170.170.170'))
def testIPv6toString(self):
if not hasattr(socket, 'inet_pton'):
return # No inet_pton() on this platform
try:
from socket import inet_pton, AF_INET6, has_ipv6
if not has_ipv6:
return
except ImportError:
return
f = lambda a: inet_pton(AF_INET6, a)
self.assertEquals('\x00' * 16, f('::'))
self.assertEquals('\x00' * 16, f('0::0'))
self.assertEquals('\x00\x01' + '\x00' * 14, f('1::'))
self.assertEquals(
'\x45\xef\x76\xcb\x00\x1a\x56\xef\xaf\xeb\x0b\xac\x19\x24\xae\xae',
f('45ef:76cb:1a:56ef:afeb:bac:1924:aeae')
)
def testStringToIPv4(self):
if not hasattr(socket, 'inet_ntop'):
return # No inet_ntop() on this platform
from socket import inet_ntoa as f, inet_ntop, AF_INET
g = lambda a: inet_ntop(AF_INET, a)
self.assertEquals('1.0.1.0', f('\x01\x00\x01\x00'))
self.assertEquals('170.85.170.85', f('\xaa\x55\xaa\x55'))
self.assertEquals('255.255.255.255', f('\xff\xff\xff\xff'))
self.assertEquals('1.2.3.4', f('\x01\x02\x03\x04'))
self.assertEquals('1.0.1.0', g('\x01\x00\x01\x00'))
self.assertEquals('170.85.170.85', g('\xaa\x55\xaa\x55'))
self.assertEquals('255.255.255.255', g('\xff\xff\xff\xff'))
def testStringToIPv6(self):
if not hasattr(socket, 'inet_ntop'):
return # No inet_ntop() on this platform
try:
from socket import inet_ntop, AF_INET6, has_ipv6
if not has_ipv6:
return
except ImportError:
return
f = lambda a: inet_ntop(AF_INET6, a)
self.assertEquals('::', f('\x00' * 16))
self.assertEquals('::1', f('\x00' * 15 + '\x01'))
self.assertEquals(
'aef:b01:506:1001:ffff:9997:55:170',
f('\x0a\xef\x0b\x01\x05\x06\x10\x01\xff\xff\x99\x97\x00\x55\x01\x70')
)
# XXX The following don't test module-level functionality...
def testSockName(self):
# Testing getsockname()
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.bind(("0.0.0.0", PORT+1))
name = sock.getsockname()
self.assertEqual(name, ("0.0.0.0", PORT+1))
def testGetSockOpt(self):
# Testing getsockopt()
# We know a socket should start without reuse==0
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
reuse = sock.getsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR)
self.failIf(reuse != 0, "initial mode is reuse")
def testSetSockOpt(self):
# Testing setsockopt()
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
reuse = sock.getsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR)
self.failIf(reuse == 0, "failed to set reuse mode")
def testSendAfterClose(self):
# testing send() after close() with timeout
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(1)
sock.close()
self.assertRaises(socket.error, sock.send, "spam")
class BasicTCPTest(SocketConnectedTest):
def __init__(self, methodName='runTest'):
SocketConnectedTest.__init__(self, methodName=methodName)
def testRecv(self):
# Testing large receive over TCP
msg = self.cli_conn.recv(1024)
self.assertEqual(msg, MSG)
def _testRecv(self):
self.serv_conn.send(MSG)
def testOverFlowRecv(self):
# Testing receive in chunks over TCP
seg1 = self.cli_conn.recv(len(MSG) - 3)
seg2 = self.cli_conn.recv(1024)
msg = seg1 + seg2
self.assertEqual(msg, MSG)
def _testOverFlowRecv(self):
self.serv_conn.send(MSG)
def testRecvFrom(self):
# Testing large recvfrom() over TCP
msg, addr = self.cli_conn.recvfrom(1024)
self.assertEqual(msg, MSG)
def _testRecvFrom(self):
self.serv_conn.send(MSG)
def testOverFlowRecvFrom(self):
# Testing recvfrom() in chunks over TCP
seg1, addr = self.cli_conn.recvfrom(len(MSG)-3)
seg2, addr = self.cli_conn.recvfrom(1024)
msg = seg1 + seg2
self.assertEqual(msg, MSG)
def _testOverFlowRecvFrom(self):
self.serv_conn.send(MSG)
def testSendAll(self):
# Testing sendall() with a 2048 byte string over TCP
msg = ''
while 1:
read = self.cli_conn.recv(1024)
if not read:
break
msg += read
self.assertEqual(msg, 'f' * 2048)
def _testSendAll(self):
big_chunk = 'f' * 2048
self.serv_conn.sendall(big_chunk)
def testFromFd(self):
# Testing fromfd()
if not hasattr(socket, "fromfd"):
return # On Windows, this doesn't exist
fd = self.cli_conn.fileno()
sock = socket.fromfd(fd, socket.AF_INET, socket.SOCK_STREAM)
msg = sock.recv(1024)
self.assertEqual(msg, MSG)
def _testFromFd(self):
self.serv_conn.send(MSG)
def testShutdown(self):
# Testing shutdown()
msg = self.cli_conn.recv(1024)
self.assertEqual(msg, MSG)
def _testShutdown(self):
self.serv_conn.send(MSG)
self.serv_conn.shutdown(2)
class BasicUDPTest(ThreadedUDPSocketTest):
def __init__(self, methodName='runTest'):
ThreadedUDPSocketTest.__init__(self, methodName=methodName)
def testSendtoAndRecv(self):
# Testing sendto() and Recv() over UDP
msg = self.serv.recv(len(MSG))
self.assertEqual(msg, MSG)
def _testSendtoAndRecv(self):
self.cli.sendto(MSG, 0, (HOST, PORT))
def testRecvFrom(self):
# Testing recvfrom() over UDP
msg, addr = self.serv.recvfrom(len(MSG))
self.assertEqual(msg, MSG)
def _testRecvFrom(self):
self.cli.sendto(MSG, 0, (HOST, PORT))
class NonBlockingTCPTests(ThreadedTCPSocketTest):
def __init__(self, methodName='runTest'):
ThreadedTCPSocketTest.__init__(self, methodName=methodName)
def testSetBlocking(self):
# Testing whether set blocking works
self.serv.setblocking(0)
start = time.time()
try:
self.serv.accept()
except socket.error:
pass
end = time.time()
self.assert_((end - start) < 1.0, "Error setting non-blocking mode.")
def _testSetBlocking(self):
pass
def testAccept(self):
# Testing non-blocking accept
self.serv.setblocking(0)
try:
conn, addr = self.serv.accept()
except socket.error:
pass
else:
self.fail("Error trying to do non-blocking accept.")
read, write, err = select.select([self.serv], [], [])
if self.serv in read:
conn, addr = self.serv.accept()
else:
self.fail("Error trying to do accept after select.")
def _testAccept(self):
time.sleep(0.1)
self.cli.connect((HOST, PORT))
def testConnect(self):
# Testing non-blocking connect
conn, addr = self.serv.accept()
def _testConnect(self):
self.cli.settimeout(10)
self.cli.connect((HOST, PORT))
def testRecv(self):
# Testing non-blocking recv
conn, addr = self.serv.accept()
conn.setblocking(0)
try:
msg = conn.recv(len(MSG))
except socket.error:
pass
else:
self.fail("Error trying to do non-blocking recv.")
read, write, err = select.select([conn], [], [])
if conn in read:
msg = conn.recv(len(MSG))
self.assertEqual(msg, MSG)
else:
self.fail("Error during select call to non-blocking socket.")
def _testRecv(self):
self.cli.connect((HOST, PORT))
time.sleep(0.1)
self.cli.send(MSG)
class FileObjectClassTestCase(SocketConnectedTest):
bufsize = -1 # Use default buffer size
def __init__(self, methodName='runTest'):
SocketConnectedTest.__init__(self, methodName=methodName)
def setUp(self):
SocketConnectedTest.setUp(self)
self.serv_file = self.cli_conn.makefile('rb', self.bufsize)
def tearDown(self):
self.serv_file.close()
self.assert_(self.serv_file.closed)
self.serv_file = None
SocketConnectedTest.tearDown(self)
def clientSetUp(self):
SocketConnectedTest.clientSetUp(self)
self.cli_file = self.serv_conn.makefile('wb')
def clientTearDown(self):
self.cli_file.close()
self.assert_(self.cli_file.closed)
self.cli_file = None
SocketConnectedTest.clientTearDown(self)
def testSmallRead(self):
# Performing small file read test
first_seg = self.serv_file.read(len(MSG)-3)
second_seg = self.serv_file.read(3)
msg = first_seg + second_seg
self.assertEqual(msg, MSG)
def _testSmallRead(self):
self.cli_file.write(MSG)
self.cli_file.flush()
def testFullRead(self):
# read until EOF
msg = self.serv_file.read()
self.assertEqual(msg, MSG)
def _testFullRead(self):
self.cli_file.write(MSG)
self.cli_file.close()
def testUnbufferedRead(self):
# Performing unbuffered file read test
buf = ''
while 1:
char = self.serv_file.read(1)
if not char:
break
buf += char
self.assertEqual(buf, MSG)
def _testUnbufferedRead(self):
self.cli_file.write(MSG)
self.cli_file.flush()
def testReadline(self):
# Performing file readline test
line = self.serv_file.readline()
self.assertEqual(line, MSG)
def _testReadline(self):
self.cli_file.write(MSG)
self.cli_file.flush()
def testClosedAttr(self):
self.assert_(not self.serv_file.closed)
def _testClosedAttr(self):
self.assert_(not self.cli_file.closed)
class UnbufferedFileObjectClassTestCase(FileObjectClassTestCase):
"""Repeat the tests from FileObjectClassTestCase with bufsize==0.
In this case (and in this case only), it should be possible to
create a file object, read a line from it, create another file
object, read another line from it, without loss of data in the
first file object's buffer. Note that httplib relies on this
when reading multiple requests from the same socket."""
bufsize = 0 # Use unbuffered mode
def testUnbufferedReadline(self):
# Read a line, create a new file object, read another line with it
line = self.serv_file.readline() # first line
self.assertEqual(line, "A. " + MSG) # first line
self.serv_file = self.cli_conn.makefile('rb', 0)
line = self.serv_file.readline() # second line
self.assertEqual(line, "B. " + MSG) # second line
def _testUnbufferedReadline(self):
self.cli_file.write("A. " + MSG)
self.cli_file.write("B. " + MSG)
self.cli_file.flush()
class LineBufferedFileObjectClassTestCase(FileObjectClassTestCase):
bufsize = 1 # Default-buffered for reading; line-buffered for writing
class SmallBufferedFileObjectClassTestCase(FileObjectClassTestCase):
bufsize = 2 # Exercise the buffering code
class TCPTimeoutTest(SocketTCPTest):
def testTCPTimeout(self):
def raise_timeout(*args, **kwargs):
self.serv.settimeout(1.0)
self.serv.accept()
self.failUnlessRaises(socket.timeout, raise_timeout,
"Error generating a timeout exception (TCP)")
def testTimeoutZero(self):
ok = False
try:
self.serv.settimeout(0.0)
foo = self.serv.accept()
except socket.timeout:
self.fail("caught timeout instead of error (TCP)")
except socket.error:
ok = True
except:
self.fail("caught unexpected exception (TCP)")
if not ok:
self.fail("accept() returned success when we did not expect it")
class UDPTimeoutTest(SocketTCPTest):
def testUDPTimeout(self):
def raise_timeout(*args, **kwargs):
self.serv.settimeout(1.0)
self.serv.recv(1024)
self.failUnlessRaises(socket.timeout, raise_timeout,
"Error generating a timeout exception (UDP)")
def testTimeoutZero(self):
ok = False
try:
self.serv.settimeout(0.0)
foo = self.serv.recv(1024)
except socket.timeout:
self.fail("caught timeout instead of error (UDP)")
except socket.error:
ok = True
except:
self.fail("caught unexpected exception (UDP)")
if not ok:
self.fail("recv() returned success when we did not expect it")
class TestExceptions(unittest.TestCase):
def testExceptionTree(self):
self.assert_(issubclass(socket.error, Exception))
self.assert_(issubclass(socket.herror, socket.error))
self.assert_(issubclass(socket.gaierror, socket.error))
self.assert_(issubclass(socket.timeout, socket.error))
def test_main():
tests = [GeneralModuleTests, BasicTCPTest, TCPTimeoutTest, TestExceptions]
if sys.platform != 'mac':
tests.extend([ BasicUDPTest, UDPTimeoutTest ])
tests.extend([
NonBlockingTCPTests,
FileObjectClassTestCase,
UnbufferedFileObjectClassTestCase,
LineBufferedFileObjectClassTestCase,
SmallBufferedFileObjectClassTestCase
])
test_support.run_unittest(*tests)
if __name__ == "__main__":
test_main()