keep-alive

问题 I have a dotnet framework application which performs POST api requests to a remote server running Apache. It intermittently fails with the error: The underlying connection was closed: A connection that was expected to be kept alive was closed by the server. This occurs on the second request to the server when done over a keepalive TLS connection, and so occurs more frequently in production systems under heavy load and less frequently or not at all in development environments. We have tried:

问题 I'm writing a plugin for wordpress that needs to call an API for every request the user makes. These API-calls are done using the HTTPS protocol. Currently, for every new user request, I need to reopen the HTTPS connection. Yes, curl allows persistent connections (reusing the handle or using the multi handle) but I would like to persist the connection throughout multiple user requests. So: Is it possible to keep a HTTPS connection open throught multiple PHP processes and reuse it? The

问题 I'm writing a plugin for wordpress that needs to call an API for every request the user makes. These API-calls are done using the HTTPS protocol. Currently, for every new user request, I need to reopen the HTTPS connection. Yes, curl allows persistent connections (reusing the handle or using the multi handle) but I would like to persist the connection throughout multiple user requests. So: Is it possible to keep a HTTPS connection open throught multiple PHP processes and reuse it? The

问题 I am using RestSharp as the underlying HTTP client library to make a stress/throughput test client on a black box service. Threadpool and Servicepoint connection limits have been lifted to 5000, but that shouldn't be much of a worry as we are testing around 500-1000 requests per second. A high-resolution (microsecond) timer component is used to throw out requests at the rate we want to test. The RestSharp code roughly goes restClient.ExecuteAsync(postRequest, res => { stopwatch.Stop(); lock

问题 I have an asp.net core 2.1 website running on a windows server as an azure web app. I was asked to enable "keep-alive" so that when a client asks for "Connection:Keep-Alive" the connection is NOT closed. I cant find any documentation on how to do this (nor if this is even possible). The reason for getting a persistent connection (if this is the correct term) is to reduce the overhead from the SSL negotiation. I did find this: Azure Website Connection Keep-Alive stack-overflow question. The

问题 Below is the complete code simplified for the question. ids_to_check returns a list of ids. For my testing, I used a list of 13 random strings. #!/usr/bin/env python3 import time from multiprocessing.dummy import Pool as ThreadPool, current_process as threadpool_process import requests def ids_to_check(): some_calls() return(id_list) def execute_task(id): url = f"https://myserver.com/todos/{ id }" json_op = s.get(url,verify=False).json() value = json_op['id'] print(str(value) + '-' + str

问题 I'm running a node.js server A which uses superagent to issue HTTP requests to another server B. I investigated the request on server B and saw the the header connection being close and the httpVersion being 1.1 : var http = require('http'); var request = require('superagent'); http.createServer(function (req, res) { res.writeHead(200, {'Content-Type': 'text/plain'}); res.write('req.httpVersion seen on server:' + req.httpVersion); res.write('\nreq.headers.connection seen on server:' + req

问题 Android grpc client is receiving GOAWAY from server with "too many pings" error. Now I realise that this is probably a server side issue, but I think the issue is that the client channel settings do not match that of the servers. I have a C# gRPC server with the following settings: List<ChannelOption> channelOptions = new List<ChannelOption>(); channelOptions.Add(new ChannelOption("GRPC_ARG_HTTP2_MIN_RECV_PING_INTERVAL_WITHOUT_DATA_MS", 1000)); channelOptions.Add(new ChannelOption("GRPC_ARG

问题 Is there a way to tell Python urllib3 to not reuse idle connections after some period of time, and instead to close them? Looking in https://urllib3.readthedocs.io/en/latest/reference/index.html#module-urllib3.connectionpool doesn't seem to show anything relevant. 回答1: Remember: A connection pool is a cache of database connections maintained so that the connections can be "reused" when future requests to the database are required. You can do this is many ways (I guess): Set retries to one.

问题 Is there a way to tell Python urllib3 to not reuse idle connections after some period of time, and instead to close them? Looking in https://urllib3.readthedocs.io/en/latest/reference/index.html#module-urllib3.connectionpool doesn't seem to show anything relevant. 回答1: Remember: A connection pool is a cache of database connections maintained so that the connections can be "reused" when future requests to the database are required. You can do this is many ways (I guess): Set retries to one.