pragmatic general multicast

Why do Android apps use MulticastSocket to listen for multicast? Why do they connect to different routes and run on different mobile phones? Some of them cannot receive multicast messages. ---------------------------!! Reprinted please indicate the source !! ----------------------- A project that uses Wi-Fi multicast to discover devices in the LAN. However, it is

Social network development, let us easier to find other people's lives, more convenient to show their lives, we look more and more close, in the social network sharing, praise, comments busy, but we send the more, the more want to show themselves, unconsciously, in fact, from the inner calm more and more distant. Busy with PO map, busy brush friends circle, in the end found that these are fleeting. We want to show a more beautiful point, let others appear your life more high-end, gradually, vani

Pragmatic supremacy: RasmusLerdorf, the "father of PHP", talks about Rasmus Lerdorf's straightforward personality and concise wording. the words reveal the spirit of "pragmatic supremacy. On the eve of the "PHP Global Developer Conference", the "real-person" received an interview with "programmer" and shared his programming insights. Focus The projects I participate in are directly related to users. I ha

Pragmatic unit testing in java with JUnit-- Unit test background My internship in the company has been very fulfilling for the past two weeks, but I am also very tired. I am tired of working in a different way than before. Although the tone is the same, there are many differences in details, the current project is very large and important. The technical manager intends to adopt a more standardized and stricter development model. Therefore, testing is

Python crawler Pragmatic Series IVDescription: In the previous blog post and we've done it from go on a single home page to crawl all the links and download them down and analyze them into Excel. The objective of this session: in this section, we'll use python multithreading techniques to crawl links and analyze from go, noting that the number of links we can capture this time can be far greater than the one captured in the prev

The pragmatic programmer) The pragmatic programmer-from journeyman to master 1. care about your skillsCare about your craftUnless you care about developing software beautifully, other things are meaningless. 2. Think! Your jobThink! About your workThink about what you are doing when you do something. Keep thinking and criticize your work in real time. This will take up some of your precious time. The rewar

Even though, now is an Internet + double-gen (Volkswagen Entrepreneurship Innovation) era, a lot of exciting entrepreneurial stories emerge, this era for the community to create a large number of distinctive personality, dare to say, high-profile entrepreneurial myth characters, I think they are really strong, good at application and integration of resources, Fast viral internet communication, which in itself should be an innovation capability for Internet + ERA entrepreneurs. My topic today is

Pragmatic Version Control Using GitJump to: Navigation, search git config--global user.name "Travis Swicegood" git config--global user.email "[Email protected]" git config--global--list git config--global color.ui "Auto" CD MySite git init Git commit-m "Add in Hello World HTML"//SHA1 Hash Git branch rb_1.0 master//Create Branch git checkout rb_1.0//?? Doesn't seem to go to another directory?? I personally doubt the efficiency of doi

The Pragmatic Programmer)The Pragmatic Programmer-From journeyman to master 1. care about your skillsCare About Your CraftUnless you care about developing software beautifully, other things are meaningless. 2. Think! Your jobThink! About Your WorkThink about what you are doing when you do something. Keep thinking and criticize your work in real time. This will take up some of your precious time. The reward

Python crawler Pragmatic Series IIIDescription: In our previous blog, we've learned to extract information from a company on go and store it in Excel. The objective of this session: In this section, we will bulk download all the company interfaces on the market's home page (note that not all of the company pages on go, we can leave this for later tasks), and batch process all company information, and save to Excel. Note:

UDP MulticastImplement the server to group the client to play (send data).Implementation steps:server.c1. Create a server socket#include #include int socket (int domain, int type, int protocol); return Socket2. Building the server address structurestruct sockaddr_in serveraddr;#include Bzero (serveraddr, sizeof (SERVERADDR));serveraddr.sin_family = af_inet;SERVERADDR.SIN_ADDR.S_ADDR = htonl (Inaddr_any); IpServeraddr.sin_port = htons (server_port);// Port3. Binding Addressint bind (int sockfd, c

Multicast refers to a group of hosts, where one host sends data and other hosts in the group receive the data. First, describe the principles of Multicast: We also regard the vro192.168.192.168.0.1 port as a host, so that four hosts are connected to the vswitch. According to the principle of Ethernet, the switch does not know the existence of the IP address, but only the MAC address. The switch forwards dat

With the gradual use of IPv6, our integration with the original IPv4 network has become a key issue in the current transitional phase. We will not go into details about multiple types of excessive technologies here. This article will introduce the basics of the multicast translation gateway model for IPv6 multicast. Multicast translation gateway Model The

Unicast can only be sent to one receiver, but when sent to multiple receivers, it is not only consuming traffic, but also time consuming, total traffic = The receiver of the traffic per recipient.Broadcast mode is sent to all hosts, the disadvantage of broadcasting is to cause information pollution, a large amount of information will occupy the network bandwidth.Multicast (multicast): Only hosts that join a multic