localhost

I want to understand how my local IP address (localhost) can be exposed to Internet. For that I've read [here] a method of port forwarding using SSH. Which basically does routing from publicly available server to our localhost using SSH. But I wonder how the service like 'LocalTunnel' works? In above article it's written as following: There services (localtunnel for example) creates a tunnel from their server back to port 3000 on your dev box. It functions pretty much exactly like an SSH tunnel, but doesn’t require that you have a server. I've tried reading code from it's github repository and

I need to test the performance of application running on localhost as if it were in the online environment. I mean the performance test conducted by the network traffic simulation, limited bandwidth simulation, or other parameter as if it were online. Could Apache Ab do the simulation? We've used Charles and Firefox Throttle in the past to simulate slow networks. Yes, but you will need to connect to your application by IP address, not "localhost" or 127.0.0.1. Typically for web applications (HTTP) I use Fiddler which can simulate limited bandwidth, but only if you connect as I have noted.

I have a simple node.js /socket.io (websockets) application running @localhost. I am trying to see how many concurrent connections it can handle. Is it possible to simulate several concurrent users on localhost itself ? This is my half baked attempt using socket.io-client: function connectAndSend(){ socket.emit('qand',{ code :'ubuntu' }); } socket.on('connect', function () { }); socket.on('q', function (data) { console.log(data); }); function callConnect(){ console.log('calling'); connectAndSend() ; setTimeout(callConnect,100) ; } callConnect() ; As I see it this only 'emits' a new message

安装zookeeper kafka运行需要有jdk+zookeeper环境才能够使用,jdk的安装和环境变量的配置就不介绍了,这里需要先安装zookeeper.可以从官网上下载 https://www.apache.org/dyn/closer.cgi/zookeeper/ 清华镜像：https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/ 将下载下来的包解压一下,然后在conf目录下将zoo_sample.cfg改成zoo.cfg,如图 之后打开zoo.cfg将里面的dataDir的路径改一下,我这里修改成下面的 dataDir=E:\\Software\\data\\logs\\zookeeper 之后把zookeeper配到环境变量里面,它的配置和jdk的配置类似 运行zookeeper,在cmd里面输入zkserver会出现下面的就便是安装成功 安装kafka kafka: http://kafka.apache.org/downloads 将下载下来的安装包解压,并进入到conf目录下面找到server.properties文件 找到并编辑 log.dirs=E:\\Software\\data\\logs\\kafkazookeeper.connect=localhost:2181

I have a simple HTTP Server standing up in Golang: h := http.NewServeMux() h.Handle("/somepath", MyHandler) s := &http.Server{ Addr: "1234", Handler: h, } s.ListenAndServe(); What is the best way to drop connections where the caller is not localhost? Currently I'm considering inspecting the underlying connection information and ensuring that the IP Address is 127.0.0.1 , but this wastes a whole lot of resources (and runs through a whole bunch of Go code) before ultimately dropping the connection. Ideally, I can instrument the Golang server to drop the initial TCP SYN packet based on IP Address

I have a chat application implemented in PHP using WebSockets ( http://code.google.com/p/phpwebsocket/ ), and on my localhost when i test it i have to run the WebSockets server through a command "php server.php" , which starts the server on localhost and the file keeps running till i press "Ctrl + c" on my Ubuntu terminal. I mean it keeps on running the while loop, which is quite normal bcoz the server should be up to listen to the requests. Now my doubt is that i have hosted this application on a shared hosting, which does not give me SSH access, i mean i cannot get a terminal like interface

kafka自带sh脚本使用示例： （1）启动/关闭kafka服务： ```shell nohup env JMX_PORT=9999 /path/to/kafka_2.10-0.8.2.2/bin/kafka-server-start.sh config/server.properties >/dev/null 2>&1 & /path/to/kafka_2.10-0.8.2.2/bin/zookeeper-server-stop.sh config/zookeeper.properties >/dev/null 2>&1 & ``` （2）创建topic /path/to/kafka_2.10-0.8.2.2/bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic test 查看topic列表 /path/to/kafka_2.10-0.8.2.2/bin/kafka-topics.sh --list --zookeeper localhost:2181 （3）发送msg /path/to/kafka_2.10-0.8.2.2/bin/kafka-console-producer.sh --broker-list localhost