Beispiel #1
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def test_h2_to_h1(tctx):
    """Test HTTP/2 -> HTTP/1 request translation"""
    server = Placeholder(Server)
    flow = Placeholder(HTTPFlow)

    conn, playbook = h2_client(tctx)

    conn.send_headers(1, example_request_headers, end_stream=True)
    response = Placeholder(bytes)
    assert (
        playbook >> DataReceived(tctx.client, conn.data_to_send()) <<
        http.HttpRequestHeadersHook(flow) >> reply() <<
        http.HttpRequestHook(flow) >> reply() << OpenConnection(server) >>
        reply(None) << SendData(
            server, b"GET / HTTP/1.1\r\nHost: example.com\r\n\r\n") >>
        DataReceived(server, b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\n")
        << http.HttpResponseHeadersHook(flow) >> reply() >> DataReceived(
            server, b"Hello World!") << http.HttpResponseHook(flow) <<
        CloseConnection(server) >> reply(to=-2) << SendData(
            tctx.client, response))
    events = conn.receive_data(response())
    assert event_types(events) == [
        h2.events.ResponseReceived, h2.events.DataReceived,
        h2.events.DataReceived, h2.events.StreamEnded
    ]
    resp: h2.events.ResponseReceived = events[0]
    body: h2.events.DataReceived = events[1]
    assert resp.headers == [(b':status', b'200'), (b'content-length', b'12')]
    assert body.data == b"Hello World!"
Beispiel #2
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def test_h1_to_h2(tctx):
    """Test HTTP/1 -> HTTP/2 request translation"""
    server = Placeholder(Server)
    flow = Placeholder(HTTPFlow)

    playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular))

    conf = h2.config.H2Configuration(client_side=False)
    conn = h2.connection.H2Connection(conf)
    conn.initiate_connection()

    request = Placeholder(bytes)
    assert (playbook >> DataReceived(
        tctx.client,
        b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n") <<
            http.HttpRequestHeadersHook(flow) >> reply() <<
            http.HttpRequestHook(flow) >> reply() << OpenConnection(server) >>
            reply(None, side_effect=make_h2) << SendData(server, request))
    events = conn.receive_data(request())
    assert event_types(events) == [
        h2.events.RemoteSettingsChanged, h2.events.RequestReceived,
        h2.events.StreamEnded
    ]

    conn.send_headers(1, example_response_headers)
    conn.send_data(1, b"Hello World!", end_stream=True)
    settings_ack = Placeholder(bytes)
    assert (
        playbook >> DataReceived(server, conn.data_to_send()) <<
        http.HttpResponseHeadersHook(flow) << SendData(server, settings_ack) >>
        reply(to=-2) << http.HttpResponseHook(flow) >> reply() << SendData(
            tctx.client, b"HTTP/1.1 200 OK\r\n\r\nHello World!") <<
        CloseConnection(tctx.client))
    assert settings_ack() == b'\x00\x00\x00\x04\x01\x00\x00\x00\x00'
Beispiel #3
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def test_simple(tctx):
    playbook, cff = start_h2_client(tctx)
    flow = Placeholder(HTTPFlow)
    server = Placeholder(Server)
    initial = Placeholder(bytes)
    assert (playbook >> DataReceived(
        tctx.client,
        cff.build_headers_frame(example_request_headers, flags=[
            "END_STREAM"
        ]).serialize()) << http.HttpRequestHeadersHook(flow) >> reply() <<
            http.HttpRequestHook(flow) >> reply() << OpenConnection(server) >>
            reply(None, side_effect=make_h2) << SendData(server, initial))
    frames = decode_frames(initial())
    assert [type(x) for x in frames] == [
        hyperframe.frame.SettingsFrame,
        hyperframe.frame.HeadersFrame,
    ]
    sff = FrameFactory()
    assert (
        playbook
        # a conforming h2 server would send settings first, we disregard this for now.
        >> DataReceived(
            server,
            sff.build_headers_frame(example_response_headers).serialize()) <<
        http.HttpResponseHeadersHook(flow) >> reply() >> DataReceived(
            server,
            sff.build_data_frame(b"Hello, World!", flags=["END_STREAM"
                                                          ]).serialize()) <<
        http.HttpResponseHook(flow) >> reply() << SendData(
            tctx.client,
            cff.build_headers_frame(example_response_headers).serialize() +
            cff.build_data_frame(b"Hello, World!").serialize() +
            cff.build_data_frame(b"", flags=["END_STREAM"]).serialize()))
    assert flow().request.url == "http://example.com/"
    assert flow().response.text == "Hello, World!"
Beispiel #4
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def test_https_proxy(strategy, tctx):
    """Test a CONNECT request, followed by a HTTP GET /"""
    server = Placeholder(Server)
    flow = Placeholder(HTTPFlow)
    playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular))
    tctx.options.connection_strategy = strategy

    (playbook >> DataReceived(tctx.client,
                              b"CONNECT example.proxy:80 HTTP/1.1\r\n\r\n") <<
     http.HttpConnectHook(Placeholder()) >> reply())
    if strategy == "eager":
        (playbook << OpenConnection(server) >> reply(None))
    (playbook << SendData(tctx.client,
                          b'HTTP/1.1 200 Connection established\r\n\r\n') >>
     DataReceived(tctx.client,
                  b"GET /foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n") <<
     layer.NextLayerHook(Placeholder()) >>
     reply_next_layer(lambda ctx: http.HttpLayer(ctx, HTTPMode.transparent)) <<
     http.HttpRequestHeadersHook(flow) >> reply() << http.HttpRequestHook(flow)
     >> reply())
    if strategy == "lazy":
        (playbook << OpenConnection(server) >> reply(None))
    (playbook << SendData(
        server, b"GET /foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n") >>
     DataReceived(
         server, b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World!")
     << http.HttpResponseHeadersHook(flow) >> reply() <<
     http.HttpResponseHook(flow) >> reply() << SendData(
         tctx.client,
         b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World!"))
    assert playbook
Beispiel #5
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def test_cancel_during_response_hook(tctx):
    """
    Test that we properly handle the case of the following event sequence:
        - we receive a server response
        - we trigger the response hook
        - the client cancels the stream
        - the response hook completes

    Given that we have already triggered the response hook, we don't want to trigger the error hook.
    """
    playbook, cff = start_h2_client(tctx)
    flow = Placeholder(HTTPFlow)
    server = Placeholder(Server)

    assert (playbook >> DataReceived(
        tctx.client,
        cff.build_headers_frame(example_request_headers, flags=[
            "END_STREAM"
        ]).serialize()) << http.HttpRequestHeadersHook(flow) >> reply() <<
            http.HttpRequestHook(flow) >> reply() << OpenConnection(server) >>
            reply(None) << SendData(
                server, b'GET / HTTP/1.1\r\nHost: example.com\r\n\r\n') >>
            DataReceived(server, b"HTTP/1.1 204 No Content\r\n\r\n") <<
            http.HttpResponseHeadersHook(flow) << CloseConnection(server) >>
            reply(to=-2) << http.HttpResponseHook(flow) >> DataReceived(
                tctx.client,
                cff.build_rst_stream_frame(
                    1, ErrorCodes.CANCEL).serialize()) >> reply(to=-2))
Beispiel #6
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def test_http_proxy(tctx):
    """Test a simple HTTP GET / request"""
    server = Placeholder(Server)
    flow = Placeholder(HTTPFlow)
    assert (Playbook(http.HttpLayer(tctx, HTTPMode.regular)) >> DataReceived(
        tctx.client,
        b"GET http://example.com/foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n"
    ) << http.HttpRequestHeadersHook(flow) >> reply() << http.HttpRequestHook(
        flow) >> reply() << OpenConnection(server) >> reply(None) << SendData(
            server, b"GET /foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n")
            >> DataReceived(
                server,
                b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World") <<
            http.HttpResponseHeadersHook(flow) >> reply() >> DataReceived(
                server, b"!") << http.HttpResponseHook(flow) >> reply() <<
            SendData(
                tctx.client,
                b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World!"))
    assert server().address == ("example.com", 80)
Beispiel #7
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def test_http_server_aborts(tctx, stream):
    """Test handling of the case where a server aborts during response transmission."""
    server = Placeholder(Server)
    flow = Placeholder(HTTPFlow)
    playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular))

    def enable_streaming(flow: HTTPFlow):
        flow.response.stream = True

    assert (playbook >> DataReceived(
        tctx.client, b"GET http://example.com/ HTTP/1.1\r\n"
        b"Host: example.com\r\n\r\n") << http.HttpRequestHeadersHook(flow) >>
            reply() << http.HttpRequestHook(flow) >> reply() <<
            OpenConnection(server) >> reply(None) << SendData(
                server, b"GET / HTTP/1.1\r\n"
                b"Host: example.com\r\n\r\n") >> DataReceived(
                    server, b"HTTP/1.1 200 OK\r\n"
                    b"Content-Length: 6\r\n"
                    b"\r\n"
                    b"abc") << http.HttpResponseHeadersHook(flow))
    if stream:
        assert (playbook >> reply(side_effect=enable_streaming) << SendData(
            tctx.client, b"HTTP/1.1 200 OK\r\n"
            b"Content-Length: 6\r\n"
            b"\r\n"
            b"abc"))
    else:
        assert playbook >> reply()
    assert (playbook >> ConnectionClosed(server) << CloseConnection(server) <<
            http.HttpErrorHook(flow))
    if stream:
        assert (playbook >> reply() << CloseConnection(tctx.client))
    else:
        error_html = Placeholder(bytes)
        assert (playbook >> reply() << SendData(tctx.client, error_html) <<
                CloseConnection(tctx.client))
        assert b"502 Bad Gateway" in error_html()
        assert b"peer closed connection" in error_html()

    assert "peer closed connection" in flow().error.msg
Beispiel #8
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def test_upgrade(tctx):
    """Test a HTTP -> WebSocket upgrade"""
    tctx.server.address = ("example.com", 80)
    tctx.server.state = ConnectionState.OPEN
    http_flow = Placeholder(HTTPFlow)
    flow = Placeholder(WebSocketFlow)
    assert (
        Playbook(http.HttpLayer(tctx, HTTPMode.transparent)) >> DataReceived(
            tctx.client, b"GET / HTTP/1.1\r\n"
            b"Connection: upgrade\r\n"
            b"Upgrade: websocket\r\n"
            b"Sec-WebSocket-Version: 13\r\n"
            b"\r\n") << http.HttpRequestHeadersHook(http_flow) >> reply() <<
        http.HttpRequestHook(http_flow) >> reply() << SendData(
            tctx.server, b"GET / HTTP/1.1\r\n"
            b"Connection: upgrade\r\n"
            b"Upgrade: websocket\r\n"
            b"Sec-WebSocket-Version: 13\r\n"
            b"\r\n") >> DataReceived(
                tctx.server, b"HTTP/1.1 101 Switching Protocols\r\n"
                b"Upgrade: websocket\r\n"
                b"Connection: Upgrade\r\n"
                b"\r\n") << http.HttpResponseHeadersHook(http_flow) >> reply()
        << http.HttpResponseHook(http_flow) >> reply() << SendData(
            tctx.client, b"HTTP/1.1 101 Switching Protocols\r\n"
            b"Upgrade: websocket\r\n"
            b"Connection: Upgrade\r\n"
            b"\r\n") << websocket.WebsocketStartHook(flow) >> reply() >>
        DataReceived(tctx.client, masked_bytes(b"\x81\x0bhello world")) <<
        websocket.WebsocketMessageHook(flow) >> reply() << SendData(
            tctx.server, masked(b"\x81\x0bhello world")) >> DataReceived(
                tctx.server, b"\x82\nhello back") <<
        websocket.WebsocketMessageHook(flow) >> reply() << SendData(
            tctx.client, b"\x82\nhello back"))
    assert flow().handshake_flow == http_flow()
    assert len(flow().messages) == 2
    assert flow().messages[0].content == "hello world"
    assert flow().messages[0].from_client
    assert flow().messages[1].content == b"hello back"
    assert flow().messages[1].from_client is False
Beispiel #9
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def test_no_normalization(tctx):
    """Test that we don't normalize headers when we just pass them through."""

    server = Placeholder(Server)
    flow = Placeholder(HTTPFlow)
    playbook, cff = start_h2_client(tctx)

    request_headers = example_request_headers + (
        (b"Should-Not-Be-Capitalized! ", b" :) "), )
    response_headers = example_response_headers + ((b"Same", b"Here"), )

    initial = Placeholder(bytes)
    assert (playbook >> DataReceived(
        tctx.client,
        cff.build_headers_frame(request_headers, flags=[
            "END_STREAM"
        ]).serialize()) << http.HttpRequestHeadersHook(flow) >> reply() <<
            http.HttpRequestHook(flow) >> reply() << OpenConnection(server) >>
            reply(None, side_effect=make_h2) << SendData(server, initial))
    frames = decode_frames(initial())
    assert [type(x) for x in frames] == [
        hyperframe.frame.SettingsFrame,
        hyperframe.frame.HeadersFrame,
    ]
    assert hpack.hpack.Decoder().decode(frames[1].data,
                                        True) == list(request_headers)

    sff = FrameFactory()
    assert (playbook >> DataReceived(
        server,
        sff.build_headers_frame(response_headers, flags=[
            "END_STREAM"
        ]).serialize()) << http.HttpResponseHeadersHook(flow) >> reply() <<
            http.HttpResponseHook(flow) >> reply() << SendData(
                tctx.client,
                cff.build_headers_frame(response_headers).serialize() +
                cff.build_data_frame(b"", flags=["END_STREAM"]).serialize()))
    assert flow().request.headers.fields == ((b"Should-Not-Be-Capitalized! ",
                                              b" :) "), )
    assert flow().response.headers.fields == ((b"Same", b"Here"), )
Beispiel #10
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def test_response_streaming(tctx):
    """Test HTTP response streaming"""
    server = Placeholder(Server)
    flow = Placeholder(HTTPFlow)

    def enable_streaming(flow: HTTPFlow):
        flow.response.stream = lambda x: x.upper()

    assert (Playbook(http.HttpLayer(tctx, HTTPMode.regular)) >> DataReceived(
        tctx.client,
        b"GET http://example.com/largefile HTTP/1.1\r\nHost: example.com\r\n\r\n"
    ) << http.HttpRequestHeadersHook(flow) >> reply() << http.HttpRequestHook(
        flow) >> reply() << OpenConnection(server) >> reply(None) << SendData(
            server, b"GET /largefile HTTP/1.1\r\nHost: example.com\r\n\r\n")
            >> DataReceived(
                server, b"HTTP/1.1 200 OK\r\nContent-Length: 6\r\n\r\nabc") <<
            http.HttpResponseHeadersHook(flow) >>
            reply(side_effect=enable_streaming) << SendData(
                tctx.client,
                b"HTTP/1.1 200 OK\r\nContent-Length: 6\r\n\r\nABC") >>
            DataReceived(server, b"def") << SendData(
                tctx.client, b"DEF") << http.HttpResponseHook(flow) >> reply())
Beispiel #11
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def _test_cancel(stream_req, stream_resp, draw):
    """
    Test that we don't raise an exception if someone disconnects.
    """
    tctx = context.Context(
        context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329),
        opts)
    playbook, cff = start_h2_client(tctx)
    flow = Placeholder(HTTPFlow)
    server = Placeholder(Server)

    def maybe_stream(flow: HTTPFlow):
        if stream_req:
            flow.request.stream = True
        if stream_resp and flow.response:
            flow.response.stream = True

    hook_req_headers = http.HttpRequestHeadersHook(flow)
    hook_req = http.HttpRequestHook(flow)
    hook_resp_headers = http.HttpResponseHeadersHook(flow)
    hook_resp = http.HttpResponseHook(flow)
    hook_error = http.HttpErrorHook(flow)
    openconn = OpenConnection(server)
    send_upstream = SendData(server, Placeholder(bytes))

    data_req = DataReceived(
        tctx.client,
        cff.build_headers_frame(example_request_headers).serialize())
    data_reqbody = DataReceived(
        tctx.client,
        cff.build_data_frame(b"foo", flags=["END_STREAM"]).serialize())
    data_resp = DataReceived(
        server,
        cff.build_headers_frame(example_response_headers).serialize())
    data_respbody = DataReceived(
        server,
        cff.build_data_frame(b"bar", flags=["END_STREAM"]).serialize())

    client_disc = ConnectionClosed(tctx.client)
    client_rst = DataReceived(tctx.client,
                              cff.build_rst_stream_frame(1).serialize())
    server_disc = ConnectionClosed(server)
    server_rst = DataReceived(server,
                              cff.build_rst_stream_frame(1).serialize())

    evts: Dict[str, Tuple[Any, Any, Any]] = {}
    # precondition, but-not-after-this
    evts["data_req"] = data_req, None, client_disc
    evts["data_reqbody"] = data_reqbody, data_req, client_disc
    evts["reply_hook_req_headers"] = reply(
        to=hook_req_headers, side_effect=maybe_stream), hook_req_headers, None
    evts["reply_hook_req"] = reply(to=hook_req), hook_req, None
    evts["reply_openconn"] = reply(None, to=openconn,
                                   side_effect=make_h2), openconn, None
    evts["data_resp"] = data_resp, send_upstream, server_disc
    evts["data_respbody"] = data_respbody, data_resp, server_disc
    evts["reply_hook_resp_headers"] = reply(
        to=hook_resp_headers,
        side_effect=maybe_stream), hook_resp_headers, None
    evts["reply_hook_resp"] = reply(to=hook_resp), hook_resp, None
    evts["reply_hook_error"] = reply(to=hook_error), hook_error, None

    evts["err_client_disc"] = client_disc, None, None
    evts["err_client_rst"] = client_rst, None, client_disc
    evts["err_server_disc"] = server_disc, send_upstream, None
    evts["err_server_rst"] = server_rst, send_upstream, server_disc

    def eq_maybe(a, b):
        # _eq helpfully raises a TypeError when placeholder types don't match
        # that is useful in (test) development, but may happen legitimately when fuzzing here.
        try:
            return _eq(a, b)
        except TypeError:
            return False

    while evts:
        candidates = []
        for name, (evt, precon, negprecon) in evts.items():
            precondition_ok = (precon is None or any(
                eq_maybe(x, precon) for x in playbook.actual))
            neg_precondition_ok = (
                negprecon is None
                or not any(eq_maybe(x, negprecon) for x in playbook.actual))
            if precondition_ok and neg_precondition_ok:
                # crude hack to increase fuzzing efficiency: make it more likely that we progress.
                for i in range(1 if name.startswith("err_") else 3):
                    candidates.append((name, evt))
        if not candidates:
            break

        name, evt = draw(candidates)
        del evts[name]
        try:
            assert playbook >> evt
        except AssertionError:
            if any(
                    isinstance(x, _TracebackInPlaybook)
                    for x in playbook.actual):
                raise
            else:
                # add commands that the server issued.
                playbook.expected.extend(
                    playbook.actual[len(playbook.expected):])
Beispiel #12
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def test_kill_flow(tctx, when):
    """Test that we properly kill flows if instructed to do so"""
    server = Placeholder(Server)
    connect_flow = Placeholder(HTTPFlow)
    flow = Placeholder(HTTPFlow)

    def kill(flow: HTTPFlow):
        # Can't use flow.kill() here because that currently still depends on a reply object.
        flow.error = Error(Error.KILLED_MESSAGE)

    def assert_kill(err_hook: bool = True):
        playbook >> reply(side_effect=kill)
        if err_hook:
            playbook << http.HttpErrorHook(flow)
            playbook >> reply()
        playbook << CloseConnection(tctx.client)
        assert playbook

    playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular))
    assert (playbook >> DataReceived(
        tctx.client, b"CONNECT example.com:80 HTTP/1.1\r\n\r\n") <<
            http.HttpConnectHook(connect_flow))
    if when == "http_connect":
        return assert_kill(False)
    assert (
        playbook >> reply() << SendData(
            tctx.client,
            b'HTTP/1.1 200 Connection established\r\n\r\n') >> DataReceived(
                tctx.client,
                b"GET /foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n") <<
        layer.NextLayerHook(Placeholder()) >>
        reply_next_layer(lambda ctx: http.HttpLayer(ctx, HTTPMode.transparent))
        << http.HttpRequestHeadersHook(flow))
    if when == "requestheaders":
        return assert_kill()
    assert (playbook >> reply() << http.HttpRequestHook(flow))
    if when == "request":
        return assert_kill()
    if when == "script-response-responseheaders":
        assert (playbook >> reply(
            side_effect=lambda f: setattr(f, "response", HTTPResponse.make()))
                << http.HttpResponseHeadersHook(flow))
        return assert_kill()
    assert (
        playbook >> reply() << OpenConnection(server) >>
        reply(None) << SendData(
            server, b"GET /foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n")
        >> DataReceived(
            server,
            b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World") <<
        http.HttpResponseHeadersHook(flow))
    if when == "responseheaders":
        return assert_kill()

    if when == "response":
        assert (playbook >> reply() >> DataReceived(server, b"!") <<
                http.HttpResponseHook(flow))
        return assert_kill(False)
    elif when == "error":
        assert (playbook >> reply() >> ConnectionClosed(server) <<
                CloseConnection(server) << http.HttpErrorHook(flow))
        return assert_kill(False)
    else:
        raise AssertionError
Beispiel #13
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def test_request_streaming(tctx, response):
    """
    Test HTTP request streaming

    This is a bit more contrived as we may receive server data while we are still sending the request.
    """
    server = Placeholder(Server)
    flow = Placeholder(HTTPFlow)
    playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular))

    def enable_streaming(flow: HTTPFlow):
        flow.request.stream = lambda x: x.upper()

    assert (playbook >> DataReceived(
        tctx.client, b"POST http://example.com/ HTTP/1.1\r\n"
        b"Host: example.com\r\n"
        b"Content-Length: 6\r\n\r\n"
        b"abc") << http.HttpRequestHeadersHook(flow) >>
            reply(side_effect=enable_streaming) << http.HttpRequestHook(flow)
            >> reply() << OpenConnection(server) >> reply(None) << SendData(
                server, b"POST / HTTP/1.1\r\n"
                b"Host: example.com\r\n"
                b"Content-Length: 6\r\n\r\n"
                b"ABC"))
    if response == "normal response":
        assert (
            playbook >> DataReceived(tctx.client, b"def") << SendData(
                server, b"DEF") >> DataReceived(
                    server, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n") <<
            http.HttpResponseHeadersHook(flow) >> reply() <<
            http.HttpResponseHook(flow) >> reply() << SendData(
                tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n"))
    elif response == "early response":
        # We may receive a response before we have finished sending our request.
        # We continue sending unless the server closes the connection.
        # https://tools.ietf.org/html/rfc7231#section-6.5.11
        assert (playbook >> DataReceived(
            server,
            b"HTTP/1.1 413 Request Entity Too Large\r\nContent-Length: 0\r\n\r\n"
        ) << http.HttpResponseHeadersHook(flow) >> reply(
        ) << http.HttpResponseHook(flow) >> reply() << SendData(
            tctx.client,
            b"HTTP/1.1 413 Request Entity Too Large\r\nContent-Length: 0\r\n\r\n"
        ) >> DataReceived(tctx.client, b"def") << SendData(
            server, b"DEF")  # Important: no request hook here!
                )
    elif response == "early close":
        assert (playbook >> DataReceived(
            server,
            b"HTTP/1.1 413 Request Entity Too Large\r\nContent-Length: 0\r\n\r\n"
        ) << http.HttpResponseHeadersHook(flow) >> reply(
        ) << http.HttpResponseHook(flow) >> reply() << SendData(
            tctx.client,
            b"HTTP/1.1 413 Request Entity Too Large\r\nContent-Length: 0\r\n\r\n"
        ) >> ConnectionClosed(server) << CloseConnection(server) <<
                CloseConnection(tctx.client))
    elif response == "early kill":
        err = Placeholder(bytes)
        assert (playbook >> ConnectionClosed(server) << CloseConnection(server)
                << http.HttpErrorHook(flow) >> reply() << SendData(
                    tctx.client, err) << CloseConnection(tctx.client))
        assert b"502 Bad Gateway" in err()
    else:  # pragma: no cover
        assert False
Beispiel #14
0
def test_http2_client_aborts(tctx, stream, when, how):
    """
    Test handling of the case where a client aborts during request or response transmission.

    If the client aborts the request transmission, we must trigger an error hook,
    if the client disconnects during response transmission, no error hook is triggered.
    """
    server = Placeholder(Server)
    flow = Placeholder(HTTPFlow)
    playbook, cff = start_h2_client(tctx)
    resp = Placeholder(bytes)

    def enable_request_streaming(flow: HTTPFlow):
        flow.request.stream = True

    def enable_response_streaming(flow: HTTPFlow):
        flow.response.stream = True

    assert (playbook >> DataReceived(
        tctx.client,
        cff.build_headers_frame(example_request_headers).serialize()) <<
            http.HttpRequestHeadersHook(flow))
    if stream and when == "request":
        assert (playbook >> reply(side_effect=enable_request_streaming) <<
                http.HttpRequestHook(flow) >> reply() << OpenConnection(server)
                >> reply(None) << SendData(
                    server, b"GET / HTTP/1.1\r\n"
                    b"Host: example.com\r\n\r\n"))
    else:
        assert playbook >> reply()

    if when == "request":
        if "RST" in how:
            playbook >> DataReceived(
                tctx.client,
                cff.build_rst_stream_frame(1, ErrorCodes.CANCEL).serialize())
        else:
            playbook >> ConnectionClosed(tctx.client)
            playbook << CloseConnection(tctx.client)

        if stream:
            playbook << CloseConnection(server)
        playbook << http.HttpErrorHook(flow)
        playbook >> reply()

        if how == "RST+disconnect":
            playbook >> ConnectionClosed(tctx.client)
            playbook << CloseConnection(tctx.client)

        assert playbook
        assert "stream reset" in flow(
        ).error.msg or "peer closed connection" in flow().error.msg
        return

    assert (playbook >> DataReceived(
        tctx.client,
        cff.build_data_frame(b"", flags=["END_STREAM"]).serialize()) <<
            http.HttpRequestHook(flow) >> reply() << OpenConnection(server) >>
            reply(None) << SendData(
                server, b"GET / HTTP/1.1\r\n"
                b"Host: example.com\r\n\r\n") >> DataReceived(
                    server, b"HTTP/1.1 200 OK\r\nContent-Length: 6\r\n\r\n123")
            << http.HttpResponseHeadersHook(flow))
    if stream:
        assert (playbook >> reply(side_effect=enable_response_streaming) <<
                SendData(tctx.client, resp))
    else:
        assert playbook >> reply()

    if "RST" in how:
        playbook >> DataReceived(
            tctx.client,
            cff.build_rst_stream_frame(1, ErrorCodes.CANCEL).serialize())
    else:
        playbook >> ConnectionClosed(tctx.client)
        playbook << CloseConnection(tctx.client)

    assert (playbook << CloseConnection(server) << http.HttpErrorHook(flow) >>
            reply())

    if how == "RST+disconnect":
        assert (playbook >> ConnectionClosed(tctx.client) << CloseConnection(
            tctx.client))

    if "RST" in how:
        assert "stream reset" in flow().error.msg
    else:
        assert "peer closed connection" in flow().error.msg