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# Copyright 2016 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""The Python client used to test negative http2 conditions."""
import argparse
import grpc
import time
from src.proto.grpc.testing import test_pb2
from src.proto.grpc.testing import messages_pb2
def _validate_payload_type_and_length(response, expected_type, expected_length):
if response.payload.type is not expected_type:
raise ValueError('expected payload type %s, got %s' %
(expected_type, type(response.payload.type)))
elif len(response.payload.body) != expected_length:
raise ValueError('expected payload body size %d, got %d' %
(expected_length, len(response.payload.body)))
def _expect_status_code(call, expected_code):
if call.code() != expected_code:
raise ValueError('expected code %s, got %s' %
(expected_code, call.code()))
def _expect_status_details(call, expected_details):
if call.details() != expected_details:
raise ValueError('expected message %s, got %s' %
(expected_details, call.details()))
def _validate_status_code_and_details(call, expected_code, expected_details):
_expect_status_code(call, expected_code)
_expect_status_details(call, expected_details)
# common requests
_REQUEST_SIZE = 314159
_RESPONSE_SIZE = 271828
_SIMPLE_REQUEST = messages_pb2.SimpleRequest(
response_type=messages_pb2.COMPRESSABLE,
response_size=_RESPONSE_SIZE,
payload=messages_pb2.Payload(body=b'\x00' * _REQUEST_SIZE))
def _goaway(stub):
first_response = stub.UnaryCall(_SIMPLE_REQUEST)
_validate_payload_type_and_length(first_response, messages_pb2.COMPRESSABLE,
_RESPONSE_SIZE)
time.sleep(1)
second_response = stub.UnaryCall(_SIMPLE_REQUEST)
_validate_payload_type_and_length(second_response,
messages_pb2.COMPRESSABLE, _RESPONSE_SIZE)
def _rst_after_header(stub):
resp_future = stub.UnaryCall.future(_SIMPLE_REQUEST)
_validate_status_code_and_details(resp_future, grpc.StatusCode.INTERNAL,
"Received RST_STREAM with error code 0")
def _rst_during_data(stub):
resp_future = stub.UnaryCall.future(_SIMPLE_REQUEST)
_validate_status_code_and_details(resp_future, grpc.StatusCode.INTERNAL,
"Received RST_STREAM with error code 0")
def _rst_after_data(stub):
resp_future = stub.UnaryCall.future(_SIMPLE_REQUEST)
_validate_status_code_and_details(resp_future, grpc.StatusCode.INTERNAL,
"Received RST_STREAM with error code 0")
def _ping(stub):
response = stub.UnaryCall(_SIMPLE_REQUEST)
_validate_payload_type_and_length(response, messages_pb2.COMPRESSABLE,
_RESPONSE_SIZE)
def _max_streams(stub):
# send one req to ensure server sets MAX_STREAMS
response = stub.UnaryCall(_SIMPLE_REQUEST)
_validate_payload_type_and_length(response, messages_pb2.COMPRESSABLE,
_RESPONSE_SIZE)
# give the streams a workout
futures = []
for _ in range(15):
futures.append(stub.UnaryCall.future(_SIMPLE_REQUEST))
for future in futures:
_validate_payload_type_and_length(
future.result(), messages_pb2.COMPRESSABLE, _RESPONSE_SIZE)
def _run_test_case(test_case, stub):
if test_case == 'goaway':
_goaway(stub)
elif test_case == 'rst_after_header':
_rst_after_header(stub)
elif test_case == 'rst_during_data':
_rst_during_data(stub)
elif test_case == 'rst_after_data':
_rst_after_data(stub)
elif test_case == 'ping':
_ping(stub)
elif test_case == 'max_streams':
_max_streams(stub)
else:
raise ValueError("Invalid test case: %s" % test_case)
def _args():
parser = argparse.ArgumentParser()
parser.add_argument(
'--server_host',
help='the host to which to connect',
type=str,
default="127.0.0.1")
parser.add_argument(
'--server_port',
help='the port to which to connect',
type=int,
default="8080")
parser.add_argument(
'--test_case',
help='the test case to execute',
type=str,
default="goaway")
return parser.parse_args()
def _stub(server_host, server_port):
target = '{}:{}'.format(server_host, server_port)
channel = grpc.insecure_channel(target)
grpc.channel_ready_future(channel).result()
return test_pb2.TestServiceStub(channel)
def main():
args = _args()
stub = _stub(args.server_host, args.server_port)
_run_test_case(args.test_case, stub)
if __name__ == '__main__':
main()
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