Python client.HTTPConnectionPool方法代碼示例

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_cancelGetConnectionCancelsEndpointConnect(self):
        """
        Cancelling the C{Deferred} returned from
        L{HTTPConnectionPool.getConnection} cancels the C{Deferred} returned
        by opening a new connection with the given endpoint.
        """
        self.assertEqual(self.pool._connections, {})
        connectionResult = Deferred()

        class Endpoint:
            def connect(self, factory):
                return connectionResult

        d = self.pool.getConnection(12345, Endpoint())
        d.cancel()
        self.assertEqual(self.failureResultOf(connectionResult).type,
                         CancelledError) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_nonPersistent(self):
        """
        If C{persistent} is set to C{False} when creating the
        L{HTTPConnectionPool}, C{Request}s are created with their
        C{persistent} flag set to C{False}.

        Elsewhere in the tests for the underlying HTTP code we ensure that
        this will result in the disconnection of the HTTP protocol once the
        request is done, so that the connection will not be returned to the
        pool.
        """
        pool = HTTPConnectionPool(self.reactor, persistent=False)
        agent = client.Agent(self.reactor, pool=pool)
        agent._getEndpoint = lambda *args: self
        agent.request(b"GET", b"http://127.0.0.1")
        self.assertEqual(self.protocol.requests[0][0].persistent, False) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_onlyRetryIdempotentMethods(self):
        """
        Only GET, HEAD, OPTIONS, TRACE, DELETE methods cause a retry.
        """
        pool = client.HTTPConnectionPool(None)
        connection = client._RetryingHTTP11ClientProtocol(None, pool)
        self.assertTrue(connection._shouldRetry(
            b"GET", RequestNotSent(), None))
        self.assertTrue(connection._shouldRetry(
            b"HEAD", RequestNotSent(), None))
        self.assertTrue(connection._shouldRetry(
            b"OPTIONS", RequestNotSent(), None))
        self.assertTrue(connection._shouldRetry(
            b"TRACE", RequestNotSent(), None))
        self.assertTrue(connection._shouldRetry(
            b"DELETE", RequestNotSent(), None))
        self.assertFalse(connection._shouldRetry(
            b"POST", RequestNotSent(), None))
        self.assertFalse(connection._shouldRetry(
            b"MYMETHOD", RequestNotSent(), None))
        # This will be covered by a different ticket, since we need support
        #for resettable body producers:
        # self.assertTrue(connection._doRetry("PUT", RequestNotSent(), None)) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_onlyRetryIfNoResponseReceived(self):
        """
        Only L{RequestNotSent}, L{RequestTransmissionFailed} and
        L{ResponseNeverReceived} exceptions cause a retry.
        """
        pool = client.HTTPConnectionPool(None)
        connection = client._RetryingHTTP11ClientProtocol(None, pool)
        self.assertTrue(connection._shouldRetry(
            b"GET", RequestNotSent(), None))
        self.assertTrue(connection._shouldRetry(
            b"GET", RequestTransmissionFailed([]), None))
        self.assertTrue(connection._shouldRetry(
            b"GET", ResponseNeverReceived([]),None))
        self.assertFalse(connection._shouldRetry(
            b"GET", ResponseFailed([]), None))
        self.assertFalse(connection._shouldRetry(
            b"GET", ConnectionRefusedError(), None)) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_wrappedOnPersistentReturned(self):
        """
        If L{client.HTTPConnectionPool.getConnection} returns a previously
        cached connection, it will get wrapped in a
        L{client._RetryingHTTP11ClientProtocol}.
        """
        pool = client.HTTPConnectionPool(Clock())

        # Add a connection to the cache:
        protocol = StubHTTPProtocol()
        protocol.makeConnection(StringTransport())
        pool._putConnection(123, protocol)

        # Retrieve it, it should come back wrapped in a
        # _RetryingHTTP11ClientProtocol:
        d = pool.getConnection(123, DummyEndpoint())

        def gotConnection(connection):
            self.assertIsInstance(connection,
                                  client._RetryingHTTP11ClientProtocol)
            self.assertIdentical(connection._clientProtocol, protocol)
        return d.addCallback(gotConnection) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_dontRetryIfRetryAutomaticallyFalse(self):
        """
        If L{HTTPConnectionPool.retryAutomatically} is set to C{False}, don't
        wrap connections with retrying logic.
        """
        pool = client.HTTPConnectionPool(Clock())
        pool.retryAutomatically = False

        # Add a connection to the cache:
        protocol = StubHTTPProtocol()
        protocol.makeConnection(StringTransport())
        pool._putConnection(123, protocol)

        # Retrieve it, it should come back unwrapped:
        d = pool.getConnection(123, DummyEndpoint())

        def gotConnection(connection):
            self.assertIdentical(connection, protocol)
        return d.addCallback(gotConnection) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def __init__(self, reactor):
        self.reactor = reactor
        pool = HTTPConnectionPool(reactor, persistent=True)
        pool.maxPersistentPerHost = 1
        pool.cachedConnectionTimeout = 600
        self.agent = RedirectAgent(Agent(reactor, pool=pool))
        self.reqQ = HttpReqQ(self.agent, self.reactor)
        self.clientPlaylist = HlsPlaylist()
        self.verbose = False
        self.download = False
        self.outDir = ""
        self.encryptionHandled=False

        # required for the dump durations functionality
        self.dur_dump_file = None
        self.dur_avproble_acc = 0
        self.dur_vt_acc = 0
        self.dur_playlist_acc = 0 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def __init__(self, contextFactory, *args, **kwargs):
        super(HTTPClient, self).__init__(*args, **kwargs)
        agent_kwargs = dict(
            reactor=reactor, pool=HTTPConnectionPool(reactor))
        if contextFactory is not None:
            # use the provided context factory
            agent_kwargs['contextFactory'] = contextFactory
        elif not self.verify:
            # if no context is provided and verify is set to false, use the
            # insecure context factory implementation
            agent_kwargs['contextFactory'] = InsecureContextFactory()

        self.client = TreqHTTPClient(Agent(**agent_kwargs)) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def setUp(self):
        self.fakeReactor = self.createReactor()
        self.pool = HTTPConnectionPool(self.fakeReactor)
        self.pool._factory = DummyFactory
        # The retry code path is tested in HTTPConnectionPoolRetryTests:
        self.pool.retryAutomatically = False 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_getReturnsNewIfCacheEmpty(self):
        """
        If there are no cached connections,
        L{HTTPConnectionPool.getConnection} returns a new connection.
        """
        self.assertEqual(self.pool._connections, {})

        def gotConnection(conn):
            self.assertIsInstance(conn, StubHTTPProtocol)
            # The new connection is not stored in the pool:
            self.assertNotIn(conn, self.pool._connections.values())

        unknownKey = 12245
        d = self.pool.getConnection(unknownKey, DummyEndpoint())
        return d.addCallback(gotConnection) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_getUsesQuiescentCallback(self):
        """
        When L{HTTPConnectionPool.getConnection} connects, it returns a
        C{Deferred} that fires with an instance of L{HTTP11ClientProtocol}
        that has the correct quiescent callback attached. When this callback
        is called the protocol is returned to the cache correctly, using the
        right key.
        """
        class StringEndpoint(object):
            def connect(self, factory):
                p = factory.buildProtocol(None)
                p.makeConnection(StringTransport())
                return succeed(p)

        pool = HTTPConnectionPool(self.fakeReactor, True)
        pool.retryAutomatically = False
        result = []
        key = "a key"
        pool.getConnection(
            key, StringEndpoint()).addCallback(
            result.append)
        protocol = result[0]
        self.assertIsInstance(protocol, HTTP11ClientProtocol)

        # Now that we have protocol instance, lets try to put it back in the
        # pool:
        protocol._state = "QUIESCENT"
        protocol._quiescentCallback(protocol)

        # If we try to retrive a connection to same destination again, we
        # should get the same protocol, because it should've been added back
        # to the pool:
        result2 = []
        pool.getConnection(
            key, StringEndpoint()).addCallback(
            result2.append)
        self.assertIdentical(result2[0], protocol) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_closeCachedConnections(self):
        """
        L{HTTPConnectionPool.closeCachedConnections} closes all cached
        connections and removes them from the cache. It returns a Deferred
        that fires when they have all lost their connections.
        """
        persistent = []
        def addProtocol(scheme, host, port):
            p = HTTP11ClientProtocol()
            p.makeConnection(StringTransport())
            self.pool._putConnection((scheme, host, port), p)
            persistent.append(p)
        addProtocol("http", b"example.com", 80)
        addProtocol("http", b"www2.example.com", 80)
        doneDeferred = self.pool.closeCachedConnections()

        # Connections have begun disconnecting:
        for p in persistent:
            self.assertEqual(p.transport.disconnecting, True)
        self.assertEqual(self.pool._connections, {})
        # All timeouts were cancelled and removed:
        for dc in self.fakeReactor.getDelayedCalls():
            self.assertEqual(dc.cancelled, True)
        self.assertEqual(self.pool._timeouts, {})

        # Returned Deferred fires when all connections have been closed:
        result = []
        doneDeferred.addCallback(result.append)
        self.assertEqual(result, [])
        persistent[0].connectionLost(Failure(ConnectionDone()))
        self.assertEqual(result, [])
        persistent[1].connectionLost(Failure(ConnectionDone()))
        self.assertEqual(result, [None]) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_persistent(self):
        """
        If C{persistent} is set to C{True} on the L{HTTPConnectionPool} (the
        default), C{Request}s are created with their C{persistent} flag set to
        C{True}.
        """
        pool = HTTPConnectionPool(self.reactor)
        agent = client.Agent(self.reactor, pool=pool)
        agent._getEndpoint = lambda *args: self
        agent.request(b"GET", b"http://127.0.0.1")
        self.assertEqual(self.protocol.requests[0][0].persistent, True) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_endpointFactoryDefaultPool(self):
        """
        If no pool is passed in to L{Agent.usingEndpointFactory}, a default
        pool is constructed with no persistent connections.
        """
        agent = client.Agent.usingEndpointFactory(
            self.reactor, StubEndpointFactory())
        pool = agent._pool
        self.assertEqual((pool.__class__, pool.persistent, pool._reactor),
                          (HTTPConnectionPool, False, agent._reactor)) 

# 需要導入模塊: from twisted.web import client [as 別名]
# 或者: from twisted.web.client import HTTPConnectionPool [as 別名]
def test_retryIfFailedDueToNonCancelException(self):
        """
        If a request failed with L{ResponseNeverReceived} due to some
        arbitrary exception, C{_shouldRetry} returns C{True} to indicate the
        request should be retried.
        """
        pool = client.HTTPConnectionPool(None)
        connection = client._RetryingHTTP11ClientProtocol(None, pool)
        self.assertTrue(connection._shouldRetry(
            b"GET", ResponseNeverReceived([Failure(Exception())]), None))