openvpn client linux

beginning. But returning information from a child process to the parent process requires more work. Threads help solve both of these problems. Threads are sometimes referred to as light weight processes (lightweight process), because threads are "lighter" than processes, and in general, creating a thread is 10~100 times faster than creating a process. All threads in a process share the same global memory, which makes it easy for threads to share information, but this simplicity also poses a s

;If(Socket_client_create_connect (server,client)) {Pthread_create (tid, null,client_recv_msg, client); while (1) {fgets (data,1024x768, stdin); if (send (Client->sock_fd,data,1024x768,0) ==-1) {perror ("error to send:"); break;}} } return 0;} Makefile:All: server clientserver: server.c gcc-o Server server.c-pthreadclient: client.c Gc

Linux is known for its source code, and its stability and reliability in the field of the operating system, the network application technology is more widely used. It has been one of Windows ' most important rivals for a long time. With the advent of the Internet era, this advantage of Linux has become more prominent. This article will discuss how to use the socket to implement

. QT is a complete framework for C + + application development. It contains a class library, and tools for cross-platform development and internationalization. The QT API is the same on all supported platforms, and the QT tools are used consistently on these platforms, so the development and deployment of QT applications is platform agnostic. In desktop systems, the QT program is typically an X protocol-compliant application that requires X-server support.QT/E is the QT version for embedded

Below is the Ubuntu and arch under the installation method, Ubuntu's turn from the network,Ubuntu: Download the client and unzip Install the development packagesudo-i2 dpkg--add-Architecture i386 # Add 32-bit support 3 apt-get updateinstall Build-essential Gnome-core-devel # Installation of two development packages (optional) RunCD drclient2./privillege. SH Get dependency Package file information, install dependent packages1LDD Drclie

Two days ago, Microsoft said it was going to give "Linux users an exciting news", and today the news came. It has just released a new Skype client for Linux.In this release, Microsoft's Skype Client for Linux is consistent with its version of Windows, which includes similar interfaces, support for file and image sharin

Label: Download Zabbix installation package (Zabbix installation package contains ZABBIX_AGENTD client installation package, we only select ZABBIX_AGENTD Client installation)Zbbix Official website: http://www.zabbix.com/downloadClient actionsTips: Linux Software compilation installation requires two installation packages gcc gcc-c++ make can be installed online u

This article tests the Linux system environment for Ubuntu15.10 Destop, which is not verified under other systems, does not represent the LTS version or the older version according to the method described herein can be 100% correct use of the latest Ruijie authentication client.This article is oriented to the students of South China Normal University, the school Ruijie authentication Client please click HER

the Epoll_create () was created, the parameter timeout is the timeout (in milliseconds, 0 returns immediately , 1 will be uncertain, and there are statements that are permanently blocked). The function returns the number of events that need to be processed, such as returning 0 to indicate a timeout.Application Examples:Below, I refer to a simple program written by someone else in Google code to illustrate it. SVN path: http://sechat.googlecode.com/svn/trunk/The program a simple chat room progra

Premise　　In general, we need to Telnet to Linux in Windows development, commonly used Telnet tools are SSH (ssh Secure Shell client) and SECURECRT, where SSH Secure Shell client is free and recommended. Using SSH (ssh Secure Shell Client) to Telnet to Linux requires installi

Recently did a Linux C network project, simply write the server between the client upload, download files, the use of concurrent server, you can implement multiple clients simultaneously upload, download.Write not good, also please big God more advice! Many do not say, everything is in the code, some of the code is as follows:/*SERVER.C */server-side void *recvmation (void *arg)//receive the message sent ov

Method One, install Oracle client Download Instant-client Installer to website Http://www.oracle.com/technetwork/database/features/instant-client/index-097480.htmlTake Redhat 32bit For example, where you choose to download instant Client for Linux x86Then choose the versio

CauseWhen using SECURECRT to access Linux via telnet or SSH, there is always an issue where the connection prompt will be disconnected after a period of time. Initially thought is caused by network instability, but I test found in the server can always ping the client IP, the same client can ping the server, so the network should be no problem (

Tags: span end mailbox Map etc Mil Pass echo ClientLinux configuration mail client 1. Request a 163 mailbox and configure the client authorization password L Open Pop3/smtp/imapL Set the client authorization password# # # This password cannot be the same as the mailbox password, this password is used in Linux mail

the customer is blocked by the contact, it can read the data returned by the server from its own pipeline.The entire process repeats until the last client closes the server pipeline, which causes the server's read call to fail (return 0) because no process has opened the server pipeline in writing.If this is a true server process, it will also need to continue waiting for the customer's request, you need to modify it in two ways, as follows:1. Open a

Summary: Thunderbird is an open source, free, cross-platform web-based e-mail, news, and chat client application designed to manage multiple e-mail accounts and news feeds. On December 28, 2016, the Mozilla team announced the release of Thunderbird 45.6.0.Thunderbird is an open source, free, cross-platform web-based e-mail, news, and chat client application designed to manage multiple e-mail accounts and ne

:/nfs /mnt# echo "Hello from Tecmint.com" > /mnt/greeting.txtMount NFS sharesNow let's uninstall the share, rename the key table file in the client (impersonate it doesn't exist) and then try to mount the shared directory again:# umount /mnt# mv /etc/krb5.keytab /etc/krb5.keytab.origMount/Uninstall Kerberos NFS shareNow you can use the NFS share based on Kerberos authentication.SummarizeIn this article we describe how to set up NFS with Kerberos authe

Is you a hacker?How to build another qq/wechat/whatsapp/skype/imessage?Let's go through this!!!!Materials:A Linux/unix/windows/mac Computer/server, and do some basic things!Is you feeling?Okay, let ' s ride the rocket!Get materials:1. A Search Engineduckduckgo.com to search ' OpenFire '2. Service Software' OpenFire ' From here http://www.igniterealtime.org/downloads/index.jspAnd the client software spark: '

Install BT client transmission on Linux Centos systemTransmission is a BitTorrent client, characterized by a cross-platform backend and a concise user interface on it, licensed under the MIT License and the GNU General Public License dual license, thus being a free software and also by many Linux distributions, includi

Introduction to Windows SSH client PuttyIntroduction of PuttyPutty is a free and compact Win32 platform for Telnet,rlogin and SSH clients. Its main program is only 364k, but the functional wire is not inferior to the commercial Telnet tool.Official homepage:http://www.chiark.greenend.org.uk/~sgtatham/putty/Putty is a handy Telnet tool for Linux, for reasons such as:1. Completely free telnet and SSH