keep-alive

I'd like to lower the TCP keepalive time on a Socket I'm opening from 2 hours to something on the order of ten minutes. I can make it use keepalive with socket.setKeepAlive(true), but how can I control the time before a keepalive packet is sent? It looks like I could do this if I was using the NDK, but I want to distribute this code as a jar, so that's not ideal for me. This is probably too obvious an answer [i.e. it's not an option for your specific case] but you can of course implement your own keepalive by sending 1 throw-away byte (in either direction) every 10 minutes. I think it might be

I'm trying to write an HTTPS client in Ruby. It will connect to the server using HTTPS, passing an authentication token (obtained through a separate login process) and an SSL client certificate. I'm doing the following with rest-client : client = RestClient::Resource.new(url, :ssl_client_cert => OpenSSL::X509::Certificate.new(File.read('./certificate/client-2048.pem')), :ssl_client_key => OpenSSL::PKey::RSA.new(File.read('./certificate/client-2048.key'), ''), :verify_ssl => OpenSSL::SSL::VERIFY_NONE) # ... headers = { 'X-Application' => APP_KEY, 'X-Authentication' => @session_token, 'content

先澄清几个术语——HTTPS、SSL、TLS 1. “HTTP”是干嘛用滴？ 2. “SSL/TLS”是干嘛用滴？ 3. “HTTPS”是啥意思？ 再来说说 HTTP 协议的特点 1. HTTP 的版本和历史 2. HTTP 和 TCP 之间的关系 在网络分层模型中，TCP 被称为“传输层协议”，而 HTTP 被称为“应用层协议”。 3. HTTP 协议如何使用 TCP 连接？ 谈谈“对称加密”和“非对称加密”的概念 1. 啥是“加密”和“解密”？ 2. 啥是“对称加密”？ 3. 啥是“非对称加密”？ 4. 各自有啥优缺点？ CA 证书的原理及用途 HTTPS 协议的需求是啥？ 为什么 兼容性 可扩展性 保密性（防泄密） 完整性（防篡改） 真实性（防假冒） 性能 先澄清几个术语——HTTPS、SSL、TLS 1. “HTTP”是干嘛用滴？ 首先，HTTP 是一个网络协议，是专门用来帮你传输 Web 内容滴。关于这个协议，就算你不了解，至少也听说过吧？比如你访问俺的博客的主页，浏览器地址栏会出现网址 俺加了粗体的部分就是指 HTTP 协议。大部分网站都是通过 HTTP 协议来传输 Web 页面、以及 Web 页面上包含的各种东东（图片、CSS 样式、JS 脚本）。 2. “SSL/TLS”是干嘛用滴？ SSL 是洋文“Secure Sockets Layer”的缩写，中文叫做

I need to issue around 50 HTTP requests to a single host (API calls). Performance is important, so I'd like to use HTTP KeepAlive's. Does WebClient support this? It does on my machine, but I can't see that it's documented to. I'd certainly expect it to by default. The simplest way to tell is to run Wireshark (or Fiddler) and look at exactly what's going down the wire. For example, this program: using System; using System.Net; class Test { static void Main() { WebClient client = new WebClient(); for (int i = 0; i < 50; i++) { string text = client.DownloadString("http://www.microsoft.com");

I need to issue around 50 HTTP requests to a single host (API calls). Performance is important, so I'd like to use HTTP KeepAlive's. Does WebClient support this? It does on my machine, but I can't see that it's documented to. I'd certainly expect it to by default. The simplest way to tell is to run Wireshark (or Fiddler) and look at exactly what's going down the wire. For example, this program: using System; using System.Net; class Test { static void Main() { WebClient client = new WebClient(); for (int i = 0; i < 50; i++) { string text = client.DownloadString("http://www.microsoft.com");

I'm writing a bot, which should emulate firefox as closely as possible. By examining the headers that it is sending, I've found one minor difference, that I do not know how to get rid off: Firefox uses following keep-alive header: Connection: keep-alive While c# always sends out: Connection: Keep-Alive I know that it probably does not matter, but I'd still love to know if there is any way/hack to modify that header to be all lower case. Any ideas how to do this? In .net 4.0 this works: request.Headers.GetType().InvokeMember( "ChangeInternal", BindingFlags.Instance | BindingFlags.NonPublic |

让多个组件使用同一个挂载点，并动态切换，这就是动态组件。 通过使用保留的 <component> 元素，动态地绑定到它的 is 特性，可以实现动态组件。 方式一：局部注册所需组件 <div id="example"> <button @click="change">切换页面</button> <component :is="currentView"></component> </div> <script> var home = {template:'<div>我是主页</div>'}; var post = {template:'<div>我是提交页</div>'}; var archive = {template:'<div>我是存档页</div>'}; new Vue({ el: '#example', components: { home, post, archive, }, data:{ index:0, arr:['home','post','archive'], }, computed:{ currentView(){ return this.arr[this.index]; } }, methods:{ change(){ this.index = (++this.index)%3; } } }) </script> 使用<keep-alive>缓存 <keep

I am about to develop a console application that will be required to continually run and carry out work at specific times. My question is what is are best methods or practices to keep your application alive? My thought were: A loop that never ends? A timer that sleeps and then jumps to routine when required (after set sleep period)? I will be compiling the application into an exe and then running it as a service using AlwaysUp. Regards.. Peter A better solution would be to write a console application that does its job and quits. You can then use the Windows Task Scheduler to run it