port

问题 I am using CentOS 7 and I have to ensure that ports 2888 and 3888 are open. I read this article but this did not work because on CentOS 7 OS there is no iptables save command. Someone told me that the above URL is not valid for CentOS 7. and I should follow this. But this article is not clear to me on exactly what command I need to execute. I also found firewall-cmd --zone=public --add-port=2888/tcp but this does not survive reboots. So how can I open the ports and make it survive reboots?

问题 I am using CentOS 7 and I have to ensure that ports 2888 and 3888 are open. I read this article but this did not work because on CentOS 7 OS there is no iptables save command. Someone told me that the above URL is not valid for CentOS 7. and I should follow this. But this article is not clear to me on exactly what command I need to execute. I also found firewall-cmd --zone=public --add-port=2888/tcp but this does not survive reboots. So how can I open the ports and make it survive reboots?

问题 How do you handle multiple client to connect to one server? I have this LogServer.java import javax.net.ssl.*; import javax.net.*; import java.io.*; import java.net.*; public class LogServer { private static final int PORT_NUM = 5000; public static void main(String args[]) { ServerSocketFactory serverSocketFactory = ServerSocketFactory.getDefault(); ServerSocket serverSocket = null; try { serverSocket = serverSocketFactory.createServerSocket(PORT_NUM); } catch (IOException ignored) { System

问题 Assuming infinite performance from hardware, can a Linux box support >65536 open TCP connections? I understand that the number of ephemeral ports (<65536) limits the number of connections from one local IP to one port on one remote IP. The tuple (local ip, local port, remote ip, remote port) is what uniquely defines a TCP connection; does this imply that more than 65K connections can be supported if more than one of these parameters are free. e.g. connections to a single port number on

问题 Assuming infinite performance from hardware, can a Linux box support >65536 open TCP connections? I understand that the number of ephemeral ports (<65536) limits the number of connections from one local IP to one port on one remote IP. The tuple (local ip, local port, remote ip, remote port) is what uniquely defines a TCP connection; does this imply that more than 65K connections can be supported if more than one of these parameters are free. e.g. connections to a single port number on

问题 I want to create live chatroom by BrainSocket.I follow from this tutorial ,and it's work well on my localhost.When i deploy on ubuntu 14.04 on azure virtual machine it not work. Chrome Inspect is tell me error on this part of my code app.BrainSocket = new BrainSocket( new WebSocket('ws://myappname.cloudapp.net:8080'), new BrainSocketPubSub() ); it's tell ws://myappname.cloudapp.net:8080 is return 404 not found... I guess it should be web socket port problem on Azure. How can I open web socket

问题 Consider a pair of IPv4 or IPv6 address and port, separated by either / or : , e.g. 10.10.10.10:1234 The port is optional, so strings like 10.10.10.10/ 10.10.10.10: 10.10.10.10 are also valid. The address/port pair may be followed by space or comma characters and it is part of a much longer enclosing string. What would be a very simple regex to extract the 2 values in separate fields from the enclosing string (without using String manipulation functions)? For example, an expression like (?

问题 I have to version of PHP installed on my lion osx /opt/local/bin/php (5.3.12) /usr/bin/php (5.3.10) When I try to install php modules using port , it refers to /opt/local/bin/php (5.3.12) But when I start the web server the apache is using /usr/bin/php because if I look to the phpinfo on the apache webserver it tells me PHP Version 5.3.10 . How can I fix this issue? My goal is to install php-modules using port which affects the php used by apache. 回答1: Apache is using neither of those

问题 I was hoping somone could help me with my problem with mongodb. I had been able to connect just fine before, however after my laptop's battery ran out during a power outage I have not been able to connect to port 28017 again. I repaired the database, yet when I connect it won't connect nor throw an error. Console: Fri Jul 19 22:19:01.175 [initandlisten] build info: Linux bs-linux32.10gen.cc 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:39:36 EST 2008 i686 BOOST_LIB_VERSION=1_49 Fri Jul 19 22:19:01

问题 Here's what I want to do: My web application is very slow at first until all pages have been precompiled and the cache has been populated. I want to 'warm up' the application in Global.asax by triggering a few HTTP requests to the slowest pages. The problem is that I don't know which port the application is running on. Could be 80 (my local IIS or the deployed server, 8080 on our test server or some random port for some colleagues who use the ASP.NET development server) I thought it would be