mirror of https://github.com/grpc/grpc.git
The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
https://grpc.io/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
75 lines
3.2 KiB
75 lines
3.2 KiB
2 years ago
|
# Copyright 2023 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 implementation of the GRPC helloworld.Greeter server with keepAlive options."""
|
||
|
|
|
||
|
|
from concurrent import futures
|
||
|
|
import logging
|
||
|
|
from time import sleep
|
||
|
|
|
||
|
|
import grpc
|
||
|
|
import helloworld_pb2
|
||
|
|
import helloworld_pb2_grpc
|
||
|
|
|
||
|
|
|
||
|
|
class Greeter(helloworld_pb2_grpc.GreeterServicer):
|
||
|
|
|
||
|
|
def SayHello(self, request, context):
|
||
|
|
message = request.name
|
||
|
|
if message.startswith("[delay]"):
|
||
|
|
sleep(5)
|
||
|
|
return helloworld_pb2.HelloReply(message=message)
|
||
|
|
|
||
|
|
|
||
|
|
def serve():
|
||
|
|
"""
|
||
|
|
grpc.keepalive_time_ms: The period (in milliseconds) after which a keepalive ping is
|
||
|
|
sent on the transport.
|
||
|
|
grpc.keepalive_timeout_ms: The amount of time (in milliseconds) the sender of the keepalive
|
||
|
|
ping waits for an acknowledgement. If it does not receive an acknowledgment within
|
||
|
|
this time, it will close the connection.
|
||
|
|
grpc.http2.min_ping_interval_without_data_ms: Minimum allowed time (in milliseconds)
|
||
|
|
between a server receiving successive ping frames without sending any data/header frame.
|
||
|
|
grpc.max_connection_idle_ms: Maximum time (in milliseconds) that a channel may have no
|
||
|
|
outstanding rpcs, after which the server will close the connection.
|
||
|
|
grpc.max_connection_age_ms: Maximum time (in milliseconds) that a channel may exist.
|
||
|
|
grpc.max_connection_age_grace_ms: Grace period (in milliseconds) after the channel
|
||
|
|
reaches its max age.
|
||
|
|
grpc.http2.max_pings_without_data: How many pings can the client send before needing to
|
||
|
|
send a data/header frame.
|
||
|
|
grpc.keepalive_permit_without_calls: If set to 1 (0 : false; 1 : true), allows keepalive
|
||
|
|
pings to be sent even if there are no calls in flight.
|
||
|
|
For more details, check: https://github.com/grpc/grpc/blob/master/doc/keepalive.md
|
||
|
|
"""
|
||
|
|
server_options = [('grpc.keepalive_time_ms', 20000),
|
||
|
|
('grpc.keepalive_timeout_ms', 10000),
|
||
|
|
('grpc.http2.min_ping_interval_without_data_ms', 5000),
|
||
|
|
('grpc.max_connection_idle_ms', 10000),
|
||
|
|
('grpc.max_connection_age_ms', 30000),
|
||
|
|
('grpc.max_connection_age_grace_ms', 5000),
|
||
|
|
('grpc.http2.max_pings_without_data', 5),
|
||
|
|
('grpc.keepalive_permit_without_calls', 1)]
|
||
|
|
port = '50051'
|
||
|
|
server = grpc.server(thread_pool=futures.ThreadPoolExecutor(max_workers=10),
|
||
|
|
options=server_options)
|
||
|
|
helloworld_pb2_grpc.add_GreeterServicer_to_server(Greeter(), server)
|
||
|
|
server.add_insecure_port('[::]:' + port)
|
||
|
|
server.start()
|
||
|
|
print("Server started, listening on " + port)
|
||
|
|
server.wait_for_termination()
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
logging.basicConfig()
|
||
|
|
serve()
|