port

问题 I am new to TCP/IP and trying hard to learn basics. Well, I really wonder about inbound rules and outbound rules of Firewall and concept of source adress:port, destination adress:port. For example I am investigating port 80. I know that http uses port 80. But when I try to listen the traffic I see that my browser doesn't use 80. As you see from the image only destination port 80 is used and "destination" should be the server that hosts web pages not my computer. And also there is no used port

问题 I am a contracted Android developer, and I hate when people ask me to recreate the same "look and feel" that an iPhone application has on Android. How can I convince them that using the standard Android navigation and views will make their application more attractive than recreating a Javaized version of an iPhone app. Links appreciated. 回答1: One argument that I have used in the past is to point out that Android has a built-in "back" button. This can either take the form of a physical button,

问题 For example, in Android, the PID of a process 1234 is using ports 2222,2223,2224. Now I have a PID 1234. I was wondering how to find out port numbers 2222, 2223, 2224 which the process is using? I have tried using netstat -anp just as the way in Linux, but that didn't work. netstat -anp in ADB shell has the same effect as just netstat, which is without any command arguments. 回答1: You can either use busybox netstat -pt or cat /proc/1234/net/tcp 回答2: Try to check my github repository, https:/

问题 Here is my code to run the server: class MyRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler): #.... PORT = 8089 httpd = SocketServer.TCPServer(("", PORT), MyRequestHandler) httpd.allow_reuse_address = True print "Serving forever at port", PORT try: httpd.serve_forever() except: print "Closing the server." httpd.server_close() raise Yet this is what happens: ^CClosing the server. Traceback (most recent call last): File "server.py", line 118, in <module> self.send_error(400,

问题 Quoting from this socket tutorial: Sockets come in two primary flavors. An active socket is con­nect­ed to a remote active socket via an open data con­nec­tion... A passive socket is not con­nect­ed, but rather awaits an in­com­ing con­nec­tion, which will spawn a new active socket once a con­nec­tion is es­tab­lished ... Each port can have a single passive socket binded to it, await­ing in­com­ing con­nec­tions, and mul­ti­ple active sockets, each cor­re­spond­ing to an open con­nec­tion on

问题 can anyone tell me how to get host IP and port number on which the web application is running using javascript (e.g. 127.0.0.1:8080) 回答1: I'm afraid it's not possible to directly obtain the IP address via Javascript. It's not exposed in the window.location object. Part of the reason for that is that subsequently accessing address:port is not semantically the same as accessing hostname:port - they are technically different URLs. If what you're actually after is the host portion of the URL from

问题 I need to make my local node.js webapp listen 80 port. Now if run my app on port 80 I get this erro events.js:72 throw er; // Unhandled 'error' event ^ Error: listen EACCES at errnoException (net.js:901:11) at Server._listen2 (net.js:1020:19) at listen (net.js:1061:10) at Server.listen (net.js:1127:5) at Object.<anonymous> (\scripts\server.js:23:4) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module.js:356:32) at Function.Module.

问题 I'm currently trying to figure out a way to find the number of a free port to establish a connection, ideally with boost::asio. This port number would then be used to listen on (and only then can I open a socket). Roughly, is there a way to do tcp::resolver::query query("localhost", port); where the port is left blank (setting it to 0 doesn't work) None of the options seen previously were portable, or efficient. 回答1: The best way to handle this is to just let the OS pick a random available

问题 I'm running a Centos virtual machine using Vagrant. The machine seems to run properly, but when I try to sync Perforce I can see the following error: [vagrant@vagrant-c5-x86_64 ~]$ /perforce/p4 sync -f ... Perforce client error: Connect to server failed; check $P4PORT. failed.TCP connect to perforce.xxx.com:1666 Servname not supported for ai_socktype I have read this http://www.ducea.com/2006/09/11/error-servname-not-supported-for-ai_socktype/ and tried to set the ports in /etc/services , but

问题 I'm installing meld on Mac OS using port. It has downloaded all dependencies and told that everything is ok: Staging meld into destroot Installing meld @1.5.3_0 Activating meld @1.5.3_0 Cleaning meld Updating database of binaries: 100.0% Scanning binaries for linking errors: 100.0% No broken files found. but when I run: [18:28:24]~$ meld Traceback (most recent call last): File "/opt/local/bin/meld", line 75, in <module> locale.setlocale(locale.LC_ALL,'') File "/opt/local/Library/Frameworks