socket emit

relatively simple;4. Flow mode and datagram mode;5.TCP guarantees data correctness, UDP may drop packets, TCP guarantees data order, UDP is not guaranteed. TCP fails to retransmit, UDP does notNext, let's look at the socket programming that works in the application layer:Sockets are a way of communicating with other programs using the standard UNIX file descriptor (descriptor). Sockets can be thought of as communication connection endpoints for two p

Reprinted from Http://dotnet.chinaitlab.com/ASPNET/731870.html Many people think that the server socket in the network application should not use synchronous sockets. Yes, in most cases it is, but there are also scenarios where we might get more results with a sync socket. We can consider using synchronous sockets for the following two scenarios. One, the number of clients is less than: A smaller number ref

'); // socket. leave ('some room') ;}); // say to roomio. to ('some room '). emit ('some event'): io. in ('some room '). emit ('some event '): Code githubCreate a folder chatapp-demoChatapp-demo/package. json { "name": "chatapp-demo", "version": "1.0.0", "description": "multi room chat app demo, powered by socket.io", "main": "app.js?6.1.3", "dependencies": {

Socket programming practices in Linux (2) introduction to basic socket programming APIs What is Socket? Socket originated from Unix, and one of the basic philosophies of Unix/Linux is "Everything is a file". You can use the "open-> read/write-> close" mode to operate. Socket

Hp-socket is a common set of high-performance Windows Socket component packages that contain server-side components (IOCP models) and client components (Event Select model), which are widely used in Windows platform TCP communication systems. Hp-socket the communication layer is fully encapsulated, the upper application does not need to pay attention to any detai

First, socketThe English literal of the socket is "hole" or "socket". As the BSD UNIX process communication mechanism, take the latter one meaning. usually alsoCalled sockets, which describe IP addresses and ports, is a handle to a communication chain that can be used to communicate between different virtual machines or different computers. Hosts on the internet typically run multiple service software, whil

Socket network programming, socketSocket network programming network communication three elements: IP Address [host name] Identifier of the device in the Network Local loopback address: 127.0.0.1 Host Name: localhost Port Number The logical address used to identify the process. Valid port: 0 ~ 65535 0 ~ 1024 is used or reserved by the system. Do not use port 1024 during development. Transmission Protocol [communication r

1. basic structure of socketsstruct SOCKADDRThis structure is used to store socket addresses.Data definition:struct SOCKADDR {unsigned short sa_family; /* Address family, AF_XXX */Char sa_data[14]; /* Protocol address for bytes */};Sa_family in general, are "afinet".Sa_data contains the number of addresses, ports, and sockets for some remote computers, and the data inside it is mixed in one cut. To deal with Struct sockaddr, the programmer builds anot

Network sockets are also called an Internet socket, which in English is a Web socket. In a network, a socket plays a role as a socket, an endpoint that can be connected to other sockets in the network. Sockets allow two of processes to communicate, which may run on the same machine or on different machines. More preci

SIGPIPE signal in socket programming and sigpipe in socket programming I wrote a server programLinuxAnd then write the client in C ++ to perform stress testing with tens of millions of short links.However, the Server Always exits without core files. Finally, the problem is determined to call two write operations on a socket that has been closed on the peer end. T

Socket programming refers to a complete set of API programming about sockets, not just the use of socket () system calls, but also a complete set of functions around this system call. Here we will start from the basics and learn how to write the socket program initially. host byte order and network byte order To learn about s