def setUp(self):
     self.tempdir = mkdtemp()
     fd, self.tempfile = mkstemp()
     os.close(fd)
     self.reactor = Reactor()
     self.mockreactor = Reactor(lambda r, w, o, t: (r, w, o))
     self.port = randint(2**15, 2**16)
Exemple #2
0
    def testReaderOrWriterDoesNotMaskKeyboardInterrupt(self):
        fd, path = mkstemp()
        reactor = Reactor()

        def raiser():
            raise KeyboardInterrupt('Ctrl-C')

        reactor.addReader(sok=fd, sink=raiser)
        self.assertEquals([raiser],
                          [c.callback for c in reactor._readers.values()])
        try:
            reactor.step()
            self.fail('step() must raise KeyboardInterrupt')
        except KeyboardInterrupt:
            self.assertEquals([],
                              [c.callback for c in reactor._readers.values()])

        fd, path = mkstemp()
        reactor = Reactor()
        reactor.addWriter(sok=fd, source=raiser)
        try:
            reactor.step()
            self.fail('step() must raise KeyboardInterrupt')
        except KeyboardInterrupt:
            self.assertEquals([],
                              [c.callback for c in reactor._readers.values()])
Exemple #3
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    def testReaderOrWriterDoesNotMaskSystemExit(self):
        fd, path = mkstemp()
        reactor = Reactor()

        def raiser():
            raise SystemExit('shutdown...')

        reactor.addReader(sok=fd, sink=raiser)
        self.assertEquals([raiser],
                          [c.callback for c in reactor._readers.values()])
        try:
            reactor.step()
            self.fail('step() must raise SystemExit')
        except SystemExit:
            self.assertEquals([],
                              [c.callback for c in reactor._readers.values()])

        fd, path = mkstemp()
        reactor = Reactor()
        reactor.addWriter(sok=fd, source=raiser)
        try:
            reactor.step()
            self.fail('step() must raise SystemExit')
        except SystemExit:
            self.assertEquals([],
                              [c.callback for c in reactor._readers.values()])
    def testClearTimer(self):
        port = randint(2**10, 2**16)
        reactor = Reactor()
        expectedrequest = "GET / HTTP/1.1\r\nHost: localhost\r\nUser-Agent: Weightless/v%s\r\n\r\n" % WlVersion
        serverThread = server(port, "HTTP/1.1 200 OK\r\n\r\nresponse",
                              expectedrequest)
        self.exception = None
        sentData = []

        def send(data):
            sentData.append(data)

        def throw(exception):
            self.exception = exception

        reader = HttpReaderFacade(reactor,
                                  "http://localhost:%s" % port,
                                  send,
                                  throw,
                                  timeout=0.01,
                                  recvSize=3)
        while not self.exception:
            reactor.step()
        sleep(0.02)  # 2 * timeout, just to be sure

        self.assertTrue(isinstance(self.exception, StopIteration))
    def testTimeoutOnServerGoingSilentAfterHeaders(self):
        port = randint(2**10, 2**16)
        reactor = Reactor()
        expectedrequest = "GET / HTTP/1.1\r\nHost: localhost\r\nUser-Agent: Weightless/v%s\r\n\r\n" % WlVersion
        serverThread = server(port,
                              "HTTP/1.1 200 OK\r\n\r\n",
                              expectedrequest,
                              delay=1)
        errorArgs = []

        class Handler:
            def send(self, data):
                pass

            def throw(self, exception):
                errorArgs.append(exception)

        def error(exception):
            errorArgs.append(exception)

        reader = HttpReader(reactor,
                            Connector(reactor, 'localhost', port),
                            Handler(),
                            "GET",
                            "localhost",
                            "/",
                            timeout=0.01)
        reactor.addTimer(0.2, lambda: self.fail("Test Stuck"))
        while not errorArgs:
            reactor.step()
        serverThread.join()
        self.assertEquals('timeout while receiving data', str(errorArgs[0]))
Exemple #6
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    def testPostMethodDeCompressesDeflatedBody_deflate(self):
        self.requestData = None

        def handler(**kwargs):
            self.requestData = kwargs

        reactor = Reactor()
        server = HttpServer(reactor, self.port, handler, timeout=0.01)
        server.listen()
        sok = socket()
        sok.connect(('localhost', self.port))
        bodyData = 'bodydatabodydata'
        bodyDataCompressed = compress(bodyData)
        contentLengthCompressed = len(bodyDataCompressed)
        sok.send((
            'POST / HTTP/1.0\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: %d\r\nContent-Encoding: deflate\r\n\r\n'
            % contentLengthCompressed) + bodyDataCompressed)

        while not self.requestData:
            reactor.step()
        self.assertEquals(dict, type(self.requestData))
        self.assertTrue('Headers' in self.requestData)
        headers = self.requestData['Headers']
        self.assertEquals('POST', self.requestData['Method'])
        self.assertEquals('application/x-www-form-urlencoded',
                          headers['Content-Type'])
        self.assertEquals(contentLengthCompressed,
                          int(headers['Content-Length'])
                          )  # TS: is this correct?, maybe decompressed length?

        self.assertTrue('Body' in self.requestData)
        self.assertEquals('bodydatabodydata', self.requestData['Body'])
Exemple #7
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    def testPostMethodTimesOutOnBadBody(self):
        self.requestData = None

        def handler(**kwargs):
            self.requestData = kwargs

        done = []

        def onDone():
            fromServer = sok.recv(1024)
            self.assertTrue('HTTP/1.0 400 Bad Request' in fromServer)
            done.append(True)

        reactor = Reactor()
        server = HttpServer(reactor, self.port, handler, timeout=0.01)
        server.listen()
        reactor.addTimer(0.02, onDone)
        sok = socket()
        sok.connect(('localhost', self.port))
        sok.send(
            'POST / HTTP/1.0\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 8\r\n\r\n'
        )

        while not done:
            reactor.step()
Exemple #8
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    def testSendHeader(self):
        self.kwargs = None

        def response(**kwargs):
            self.kwargs = kwargs
            yield 'nosense'

        reactor = Reactor()
        server = HttpServer(reactor, self.port, response)
        server.listen()
        sok = socket()
        sok.connect(('localhost', self.port))
        sok.send(
            'GET /path/here HTTP/1.0\r\nConnection: close\r\nApe-Nut: Mies\r\n\r\n'
        )
        while not self.kwargs:
            reactor.step()
        self.assertEquals(
            {
                'Body': '',
                'RequestURI': '/path/here',
                'HTTPVersion': '1.0',
                'Method': 'GET',
                'Headers': {
                    'Connection': 'close',
                    'Ape-Nut': 'Mies'
                },
                'Client': ('127.0.0.1', MATCHALL)
            }, self.kwargs)
Exemple #9
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    def testInvalidPOSTRequestStartsOnlyOneTimer(self):
        # problem in found in OAS, timers not removed properly when whole body hasnt been read yet
        _httpserver.RECVSIZE = 1
        reactor = Reactor()
        timers = []
        orgAddTimer = reactor.addTimer

        def addTimerInterceptor(*timer):
            timers.append(timer)
            return orgAddTimer(*timer)

        reactor.addTimer = addTimerInterceptor
        server = HttpServer(reactor,
                            self.port,
                            lambda **kwargs: (x for x in []),
                            timeout=0.01)
        server.listen()
        sok = socket()
        sok.connect(('localhost', self.port))
        sok.send('POST / HTTP/1.0\r\nContent-Length: 10\r\n\r\n')
        reactor.step()
        sok.send(".")
        sleep(0.1)
        reactor.step()
        sok.send(".")
        reactor.step()
        sleep(0.1)
        while select([sok], [], [], 0) != ([sok], [], []):
            reactor.step()
        self.assertEquals(2, len(timers))
def startServer(port,
                stateDir,
                lucenePort,
                gatewayPort,
                quickCommit=False,
                **kwargs):
    setSignalHandlers()
    print 'Firing up API Server.'
    reactor = Reactor()
    statePath = abspath(stateDir)

    dna = main(reactor=reactor,
               port=port,
               statePath=statePath,
               lucenePort=lucenePort,
               gatewayPort=gatewayPort,
               quickCommit=quickCommit,
               **kwargs)

    server = be(dna)
    consume(server.once.observer_init())

    registerShutdownHandler(statePath=statePath,
                            server=server,
                            reactor=reactor,
                            shutdownMustSucceed=False)

    print "Ready to rumble at %s" % port
    sys.stdout.flush()
    reactor.loop()
    def testImportForeignModules(self):
        reactor = Reactor()

        open(self.tempdir + '/file1.sf', 'w').write("""
import sys

def main(headers={}, *args, **kwargs):
    yield str(sys)
""")

        d = DynamicHtml([self.tempdir], reactor=reactor, allowedModules=['sys'])
        result = d.handleRequest(scheme='http', netloc='host.nl', path='/file1', query='?query=something', fragments='#fragments', arguments={'query': 'something'})
        resultText = ''.join(result)
        self.assertTrue("<module 'sys' (built-in)>" in resultText, resultText)

        open(self.tempdir + '/file1.sf', 'w').write("""
import sys

def main(headers={}, *args, **kwargs):
    yield sys.__doc__
""")

        reactor.step()
        result = ''.join(d.handleRequest(scheme='http', netloc='host.nl', path='/file1', query='?query=something', fragments='#fragments', arguments={'query': 'something'}))
        self.assertTrue('This module provides access to some objects' in result, result)
Exemple #12
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    def testProcessWithSuspend(self):
        reactor = Reactor()

        trace = []

        def p():
            trace.append(reactor.suspend())
            trace.append('suspending')
            yield
            trace.append('resuming')
            yield

        callback = p().next
        reactor.addProcess(callback)
        reactor.addProcess(lambda: None)
        reactor.step()
        self.assertEquals([callback], reactor._suspended.keys())
        self.assertEquals([callback, 'suspending'], trace)

        reactor.step()
        self.assertEquals([callback], reactor._suspended.keys())
        self.assertEquals([callback, 'suspending'], trace)

        reactor.resumeProcess(handle=callback)
        reactor.step()
        self.assertEquals([], reactor._suspended.keys())
        self.assertEquals([callback, 'suspending', 'resuming'], trace)
 def setUp(self):
     TestCase.setUp(self)
     self.tempdir = mkdtemp()
     fd, self.tempfile = mkstemp()
     os.close(fd)
     self.reactor = Reactor()
     self.port = PortNumberGenerator.next()
Exemple #14
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 def testAddProcessSanityCheck(self):
     reactor = Reactor()
     try:
         reactor.addProcess(lambda: None, prio=10)
         self.fail('Should not come here.')
     except ValueError, e:
         self.assertEquals('Invalid priority: 10', str(e))
Exemple #15
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    def testAddProcessGenerator(self):
        reactor = Reactor()
        trace = []

        @identify
        def p():
            this = yield
            yield  # wait after this
            trace.append(1)
            yield
            trace.append(2)
            reactor.removeProcess(this.next)
            yield
            trace.append('should_not_happen')
            yield

        reactor.addProcess(p().next)
        reactor.step()
        self.assertEquals([1], trace)
        reactor.step()
        self.assertEquals([1, 2], trace)

        reactor.addProcess(lambda: None)
        reactor.step()
        self.assertEquals([1, 2], trace)
Exemple #16
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    def testWritePrio(self):
        reactor = Reactor()
        local0, remote0 = socketpair()
        local1, remote1 = socketpair()
        local1.setblocking(0)

        def remoteHandler0():
            remote0.send('ape')

        def remoteHandler1():
            remote1.send('nut')

        reactor.addWriter(remote0, remoteHandler0, 0)
        reactor.addWriter(remote1, remoteHandler1, 2)
        reactor.step()  #0
        self.assertEquals('ape', local0.recv(999))
        try:
            local1.recv(999)
            self.fail('must be no data on the socket yet')
        except error:
            pass
        reactor.step()  #1
        try:
            local1.recv(999)
            self.fail('must be no data on the socket yet')
        except error:
            pass
        reactor.step()  #2
        self.assertEquals('nut', local1.recv(999))
Exemple #17
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 def testMinandMaxPrio(self):
     reactor = Reactor()
     try:
         reactor.addReader('', '', -1)
         self.fail()
     except ValueError, e:
         self.assertEquals('Invalid priority: -1', str(e))
Exemple #18
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    def testReadPriorities(self):
        reactor = Reactor()
        local0, remote0 = socketpair()
        local1, remote1 = socketpair()
        data0 = []

        def remoteHandler0():
            data0.append(remote0.recv(999))

        data1 = []

        def remoteHandler1():
            data1.append(remote1.recv(999))

        reactor.addReader(remote0, remoteHandler0, 0)
        reactor.addReader(remote1, remoteHandler1, 2)
        local0.send('ape')
        local1.send('nut')
        reactor.step()  #0
        self.assertEquals(['ape'], data0)
        self.assertEquals([], data1)
        reactor.step()  #1
        self.assertEquals([], data1)
        reactor.step()  #2
        self.assertEquals(['nut'], data1)
    def testReloadImportedModules(self):
        reactor = Reactor()

        open(self.tempdir + '/file1.sf', 'w').write("""
def main(value, *args, **kwargs):
    return "original template %s" % value
""")
        open(self.tempdir + '/file2.sf', 'w').write("""
import file1

def main(*args, **kwargs):
   yield file1.main(value='word!', *args, **kwargs)
""")

        d = DynamicHtml([self.tempdir], reactor=reactor)
        result = ''.join(d.handleRequest(scheme='http', netloc='host.nl', path='/file2'))
        self.assertTrue('original template word!' in result, result)

        open(self.tempdir + '/file1.sf', 'w').write("""
def main(value, *args, **kwargs):
    return "changed template %s" % value
""")

        reactor.step()
        result = ''.join(d.handleRequest(scheme='http', netloc='host.nl', path='/file2'))
        self.assertTrue('changed template word!' in result, result)
    def testPost(self):
        with Reactor() as reactor:
            request = "POST / HTTP/1.1\r\nHost: localhost\r\nTransfer-Encoding: chunked\r\nSOAPAction: blah\r\nUser-Agent: Weightless/v%s\r\n\r\n1\r\nA\r\n1\r\nB\r\n1\r\nC\r\n0\r\n\r\n" % WlVersion
            serverThread = server(self.port, "HTTP/1.1 200 OK\r\n\r\nresponse", request, loop=9)
            sentData = []
            done = []
            def send(data):
                sentData.append(data)
            def throw(exception):
                if isinstance(exception, StopIteration):
                    done.append(True)
            def next():
                yield "A"
                yield "B"
                yield "C"
                yield None

            reader = HttpReaderFacade(reactor, "http://localhost:%s" % self.port, send, errorHandler=throw, timeout=0.5, headers={'SOAPAction': 'blah'}, bodyHandler=next)

            reactor.addTimer(3.0, lambda: self.fail("Test Stuck"))
            while not done:
                reactor.step()

            self.assertEquals(['response'], sentData[1:])
            self.assertEquals('200', sentData[0]['StatusCode'])
            expected = 'POST / HTTP/1.1\r\nHost: localhost\r\nTransfer-Encoding: chunked\r\nSOAPAction: blah\r\nUser-Agent: Weightless/v%s\r\n\r\n' % WlVersion + '1\r\nA\r\n' + '1\r\nB\r\n' + '1\r\nC\r\n' + '0\r\n\r\n'
            self.assertEquals(expected, "".join(request))
    def testConnect(self):
        self.req = False
        serverResponse = 'Hello World'
        def onRequest(**kwargs):
            yield 'HTTP/1.0 200 OK\r\n\r\n' + serverResponse
            self.req = True

        port = PortNumberGenerator.next()
        with Reactor() as reactor:
            try:
                server = HttpsServer(reactor, port, onRequest, keyfile='ssl/server.pkey', certfile='ssl/server.cert')
                server.listen()

                p = Popen('wget -O - --no-check-certificate --quiet https://localhost:%s' % port, shell=True, stdout=PIPE)

                popenStdout = []
                def readPopenStdout():
                    popenStdout.append(p.stdout.read())
                reactor.addReader(p.stdout, readPopenStdout)

                while not self.req:
                   reactor.step()

                reactor.step()
                self.assertEquals(1, len(popenStdout))
                self.assertEquals(serverResponse, popenStdout[0])
            finally:
                server.shutdown()

            # cleanup
            reactor.removeReader(p.stdout)
    def testDealWithChunkedResponse(self):
        with Reactor() as reactor:
            sentData = []
            done = []
            expectedrequest = "GET / HTTP/1.1\r\nHost: localhost\r\nUser-Agent: Weightless/v%s\r\n\r\n" % WlVersion
            serverThread = server(self.port, "\r\n".join("""HTTP/1.1 302 Found
Date: Fri, 26 Oct 2007 07:23:26 GMT
Server: Apache/2.2.3 (Debian) mod_python/3.2.10 Python/2.4.4 mod_ssl/2.2.3 OpenSSL/0.9.8c
Location: /page/softwarestudio.page/show
Transfer-Encoding: chunked
Content-Type: text/html; charset=utf-8

4F
<p>The document has moved <a href="/page/softwarestudio.page/show">here</a></p>

0


""".split("\n")), expectedrequest)
            class Handler:
                def send(self, data):
                    sentData.append(data)
                def throw(self, exception):
                    if isinstance(exception, StopIteration):
                        done.append(True)

            reader = HttpReader(reactor, Connector(reactor, 'localhost', int(self.port)), Handler(), 'GET', 'localhost', '/', recvSize=5)

            reactor.addTimer(0.2, lambda: self.fail("Test Stuck"))
            while not done:
                reactor.step()
            self.assertEquals("""<p>The document has moved <a href="/page/softwarestudio.page/show">here</a></p>""", "".join(sentData[1:]))
Exemple #23
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    def testSmallFragmentsWhileSendingResponse(self):
        def response(**kwargs):
            yield 'some text that is longer than '
            yield 'the lenght of fragments sent'

        reactor = Reactor()
        server = HttpServer(reactor, self.port, response, recvSize=3)
        server.listen()
        sok = socket()
        sok.connect(('localhost', self.port))
        sok.send(
            'GET /path/here HTTP/1.0\r\nConnection: close\r\nApe-Nut: Mies\r\n\r\n'
        )
        while not reactor._writers:
            reactor.step()
        serverSok, handler = reactor._writers.items()[0]
        originalSend = serverSok.send

        def sendOnlyManagesToActuallySendThreeBytesPerSendCall(data, *options):
            originalSend(data[:3], *options)
            return 3

        serverSok.send = sendOnlyManagesToActuallySendThreeBytesPerSendCall
        for i in range(21):
            reactor.step()
        fragment = sok.recv(4096)
        self.assertEquals(
            'some text that is longer than the lenght of fragments sent',
            fragment)
def startServer(port, stateDir, luceneserverPort, gatewayPort, quickCommit=False, **ignored):
    
    setSignalHandlers()
    print 'Firing up Index Server.'

    statePath = abspath(stateDir)
    writerReactor = Reactor()

    writer = writerMain(
            writerReactor=writerReactor,
            statePath=statePath,
            luceneserverPort=luceneserverPort,
            gatewayPort=gatewayPort,
            quickCommit=quickCommit,
        )

    writerServer = be(writer)

    # Start writer in main (this) thread:
    consume(writerServer.once.observer_init())

    registerShutdownHandler(statePath=statePath, server=writerServer, reactor=writerReactor, shutdownMustSucceed=False)


    print "Ready to rumble at port %s" % port
    stdout.flush()

    writerReactor.loop()
    
Exemple #25
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    def testPostMethodReadsBody(self):
        self.requestData = None

        def handler(**kwargs):
            self.requestData = kwargs

        reactor = Reactor()
        server = HttpServer(reactor, self.port, handler, timeout=0.01)
        server.listen()
        sok = socket()
        sok.connect(('localhost', self.port))
        sok.send(
            'POST / HTTP/1.0\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: 8\r\n\r\nbodydata'
        )

        while not self.requestData:
            reactor.step()
        self.assertEquals(dict, type(self.requestData))
        self.assertTrue('Headers' in self.requestData)
        headers = self.requestData['Headers']
        self.assertEquals('POST', self.requestData['Method'])
        self.assertEquals('application/x-www-form-urlencoded',
                          headers['Content-Type'])
        self.assertEquals(8, int(headers['Content-Length']))

        self.assertTrue('Body' in self.requestData)
        self.assertEquals('bodydata', self.requestData['Body'])
Exemple #26
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    def testReactorSuspend(self):
        handle = ['initial value']
        with stdout_replaced() as out:
            with Reactor() as reactor:

                def callback():
                    handle[0] = reactor.suspend()

                sok1 = MockSocket()
                reactor.addReader(sok1, callback)
                self.assertTrue(sok1.fileno() in reactor._fds)
                reactor.step()
                self.assertTrue(sok1.fileno() not in reactor._fds)

                sok2 = MockSocket()
                reactor.addWriter(sok2, callback)
                self.assertTrue(sok2.fileno() in reactor._fds)
                reactor.step()
                self.assertTrue(sok2.fileno() not in reactor._fds)
                self.assertTrue(handle[0] != None)
                self.assertTrue(handle[0] != 'initial value')

                # cleanup fd's
                sok1.close()
                sok2.close()
            self.assertEquals(2,
                              out.getvalue().count('closing'), out.getvalue())
Exemple #27
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    def testPostMethodDeCompressesDeflatedBody_unrecognizedEncoding(self):
        self.requestData = None

        def handler(**kwargs):
            self.requestData = kwargs
            return
            yield

        reactor = Reactor()
        server = HttpServer(reactor, self.port, handler, timeout=0.01)
        server.listen()
        sok = socket()
        sok.connect(('localhost', self.port))
        bodyData = 'bodydatabodydata'
        bodyDataCompressed = compress(bodyData)
        contentLengthCompressed = len(bodyDataCompressed)
        sok.send((
            'POST / HTTP/1.0\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length: %d\r\nContent-Encoding: unknown\r\n\r\n'
            % contentLengthCompressed) + bodyDataCompressed)

        while select([sok], [], [], 0) != ([sok], [], []):
            reactor.step()
        self.assertTrue(sok.recv(4096).startswith('HTTP/1.0 400 Bad Request'))

        self.assertEquals(None, self.requestData)
Exemple #28
0
    def testWrongUseAfterSuspending(self):
        with stdout_replaced():
            with Reactor() as reactor:
                handle = ['initial value']

                def callback():
                    handle[0] = reactor.suspend()

                sok = MockSocket()
                reactor.addWriter(sok, callback)
                reactor.step()
                self.assertEquals(sok.fileno(), handle[0])
                try:
                    reactor.addWriter(sok, callback)
                    self.fail("Exception not raised")
                except ValueError, e:
                    self.assertEquals('Socket is suspended', str(e))
                try:
                    reactor.addReader(sok, callback)
                    self.fail("Exception not raised")
                except ValueError, e:
                    self.assertEquals('Socket is suspended', str(e))

                # cleanup fd's
                sok.close()
Exemple #29
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    def testReadChunkedAndCompressedPost(self):
        postData = 'AhjBeehCeehAhjBeehCeehAhjBeehCeehAhjBeehCeeh'
        postDataCompressed = compress(postData)
        self.assertEquals(20, len(postDataCompressed))
        self.assertEquals(15, len(postDataCompressed[:15]))
        self.assertEquals(5, len(postDataCompressed[15:]))

        self.requestData = {}

        def handler(**kwargs):
            self.requestData = kwargs

        reactor = Reactor()
        server = HttpServer(reactor,
                            self.port,
                            handler,
                            timeout=0.01,
                            recvSize=3)
        server.listen()
        sok = socket()
        sok.connect(('localhost', self.port))
        postString = 'POST / HTTP/1.1\r\nContent-Type: application/x-www-form-urlencoded\r\nTransfer-Encoding: chunked\r\nContent-Encoding: deflate\r\n\r\nf\r\n%s\r\n5\r\n%s\r\n0\r\n' % (
            postDataCompressed[:15], postDataCompressed[15:])
        sok.send(postString)

        reactor.addTimer(0.2, lambda: self.fail("Test Stuck"))
        while self.requestData.get('Body', None) != postData:
            reactor.step()
Exemple #30
0
    def testSuspendProtocolWithThrow(self):
        with Reactor() as reactor:
            suspend = Suspend()

            def handler(**httpvars):
                yield 'before suspend'
                yield suspend
                try:
                    suspend.getResult()
                    self.fail()
                except ValueError, e:
                    tbstring = format_exc()
                    yield "result = %s" % tbstring
                yield 'after suspend'

            listener = MyMockSocket()
            port = PortNumberGenerator.next()
            httpserver = HttpServer(reactor, port, handler, sok=listener)
            httpserver.listen()
            reactor.removeReader(listener)  # avoid new connections
            httpserver._acceptor._accept()
            reactor.step()
            reactor.step()
            reactor.step()
            self.assertEquals(reactor, suspend._reactor)
            self.assertEquals(0, len(reactor._fds))

            def raiser():
                raise ValueError("BAD VALUE")

            try:
                raiser()
            except ValueError, e:
                exc_type, exc_value, exc_traceback = exc_info()
                suspend.throw(exc_type, exc_value, exc_traceback)