linux multicast example

Reprint http://blog.sina.com.cn/s/blog_4fc7368a0100okbq.html 1, multicast and broadcast need to be in the LAN to achieve, and also to see whether the Linux system support multicast and broadcast: Ifconfig up broadcast multicast mtu:1500 metric: 1Explains that the NIC supports2, send

Java program into a jar package in Linux or window, by typing1.Java-jar Mult.jar Nodeone(Please change the name of your jar bag)2.Java-jar Mult.jar NodetwoThe effect should be sending Message:nodeoneReceived:nodeoneReceived:nodetwoI tested it with window, and the results were the same on Linux, as follows:650) this.width=650; "Src=" http://dl2.iteye.com/upload/attachment/0119/2467/ 3d7597ab-36ca-376d-b48f-

sockets **/ + if(SOCKFD = socket (af_inet, SOCK_DGRAM,0)) == -1) A { atPerror ("Socket"); -Exit (-1); - } - - structsockaddr_in myaddr; -myaddr.sin_family =af_inet; inMYADDR.SIN_ADDR.S_ADDR = inet_addr ("239.0.0.1"); -Myaddr.sin_port = htons (50001); to + /** Bind multicast ip**/ - if(Bind (SOCKFD, (structSOCKADDR *) myaddr,sizeof(MYADDR)) == -1) the { *Perror ("Bind"); $Exit (-1);Panax Notoginseng } -

mapping process, the multicast group corresponding to each Ethernet multicast address is not unique . 32 different multicast group numbers are mapped to an Ethernet address. For example, multicast addresses 224.128.64.32 (hex e0.80.40.20) and 224.0.64.32 (hex e0.00.40.20) a

The multicast IP technology of Linux Network-Linux Enterprise Application-Linux server application information. The following is a detailed description. Author: Cao jianghua Multicast broadcast is an important tool used to establish a distributed system, such as online game

Article title: configure and use multicast IP technology for Linux networks. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. For example

A unicast address identifies a single IP interface, and the broadcast address identifies all IP interfaces for a subnet. Multicast addresses represent a set of IP interfaces, unicast and broadcast are the two extremes (either single or full) of the addressing scheme, and multicast is intended to provide a compromise between the two. Multicast is an important tool

Linux under TCP,UDP and broadcast and multicast Communications (Code encyclopedia) TCP, UDP, broadcast, multicast client server code link addresses are (for free): TCP Code: http://download.csdn.net/detail/huangminqiang201209/4860661UDP Code: http://download.csdn.net/detail/huangminqiang201209/4860665Broadcast code: http://download.csdn.net/detail/huangminqiang

The test code for multicasting is as follows:#include The following error occurred during the Ubuntu compilation run:The answers to the relevant information are as follows:It means that the tool was trying to use multicast and the network interface doesn ' t support it there be, likely causes :· Your machine doesn ' t has multicast support enabled. For example, o

For a 2.6 kernel, there is a struct pointer inside the Net_device,struct dev_mc_list *dev->mc_listBy accessing it, you can loop through all of the multicast MAC addresses.However, the new kernel (at least 3.10) has changed, insteadstruct netdev_hw_addr_list mc;We can obtain the corresponding data by directly accessing the MC, or we can take advantage of the macros provided by the Linux kernel.netdev_mc_coun

Let's take the multicast data sent to UDP as an example. In fact, the difference between sending a UDP multicast datagram and sending a unicast UDP datagram is not big. First, in the myudp_sendmsg function, if the source address of the sending interface is not determined and the target address is a multicast address, t

Record a Multicast DNS (mdns) problem-(ifconfig in linux), mdnsifconfig Preface:Recently, the problem of mdns query has been fixed. The problem can be summarized into three parts, which are basic issues: 1. Gateway ifconfig query address 2. encoding of multiple programs occupying one port at the same time 3. mdns protocol and source code Mdns is a protocol used for LAN discovery. For the

1. ssmping implements the multicast ping function specified by the rfc6450: https://tools.ietf.org/html/rfc64502. Ssmping's source package can be downloaded from here: https://launchpad.net/ubuntu/trusty/+package/ssmping3. Unzip and then execute the make report on CentOS Linux with the following error:Ssmpingd.c:44:error:dereferencing pointer to incomplete typeThe workaround is to edit the makefile file and

/*************************************** ************** Function: Linux arm-Linux UPD multicast ** Time: 2006-03-07 ** Writing: Li Yinan ***************************************** *************/# Include # Include # Include # Include # Include # Include # Include # Include Int Port = 6789; // Communication PortInt main (void){Int socket_descriptor;Struct sockaddr

Server#include Client: #include 　　Linux Multicast implementation

Linux Kernel proc file system usage example, Linux kernel proc example /* * Kernel programming test code** Copyright (C) 2014 Sun Mingbao * Dual licensed under the MIT and/or GPL licenses.**/# Include # Include # Include # Include # Include # Include MODULE_AUTHOR ("Sun Mingbao MODULE_DESCRIPTION ("kernel programming t

Linux ip command example IP 1. RoleIP is a powerful network configuration tool in the iproute2 software package. It can replace some traditional network management tools, such as ifconfig and route, and use permissions as superusers. Almost all Linux releases support this command. 2. FormatIP [Options] object [Command [arguments] 3. Main ParametersOptions is an o

Linux versions are installed on hard drives in windows at, September 28. Take Linux mint 14 as an example. I. Preparations 1. Partition To ensure the security of hard disk data, we recommend that you partition at the end of the hard disk. A 10-20 GB swap is used to place the system, and a swap partition of about 2 GB (The role of the swap space can be simply desc

First section click to viewPart II: Linux installation of the system (in Linux-mint as an example)At the end of the first part, the virtual machine is created successfully and then the Linux system is installed under the virtual machine, and here I take linux-mint as an

sys is used as a helper macro. The value 0 after the call name indicates the number of parameters required for the system call. It can only be added at the end of sys_call_table. Otherwise, standard system calls will be disrupted. 2. Implement system calls You can provide an implementation in arch/MIPS/kernel/syscall. C, for example:....../* Wenxy add begin, 20091119, A.M .*/# Include "/opt/bcm97405/kernel/stblinux-2.6.18/ARCH/MIPS/SiByte/CFE/cfe_api