poc socket

0. nc-lk Port number : always listen for data on this port on the local computer .1. Import three header files { #import #import #import } 2. Socket writing steps {1. Create client socket socket ( c8> 2. Create a server Socket struct sockaddr_in serveraddr ESS; 3. Connect to the server (

In the article Java Socket Chat room programming (i) the use of socket to implement chat message push we talked about how to use the socket to allow the server and the client to pass messages between the message to achieve the purpose of the push message, and then I will write out how to let the server establish client and client communication. In fact, it is to

Socket (socket)(turn) What is a socket (socket)?When the application layer communicates data through the transport layer, TCP and UDP encounter problems that simultaneously provide concurrent services for multiple application processes . Multiple TCP connections or multiple application processes may require data to be

What is a socket? A socket is an intermediate software abstraction layer that the application layer communicates with the TCP/IP protocol family, which is a set of interfaces. In design mode, the socket is actually a façade mode, it is the complex TCP/IP protocol family hidden behind the socket interface, for the use

Sockets are abstractions of communication endpoints. Just as using file descriptors to access a file, the application accesses the socket with a socket descriptor. The socket descriptor is considered to be a file descriptor in a UNIX system. In fact, many functions that handle file descriptors (read and write) can be used to handle

Socket address In Java, you can use the host name or host address to identify a network address, for example, www.baidu.com and 115.239.210.26, but the host name must be resolved to a digital address for Communication (DNS ), this process will take a certain amount of time, so we generally use a digital address in the program. In Java, inetaddress represents a network destination address, including host name and number address information. It has two

Java Socket Message Communication (i) socket creationCome and share with you today how to use the socket for communication in Java. Let's take a look at TCP/IP and UDP for a second:TCP is the short name of Transfer Control Protocol and is a connection-oriented protocol that guarantees reliable transmission. With the TCP protocol transmission, a sequential error-f

Previously also learned the socket programming, this time want to systematically study the use of Python network programming. Do this, for testing progress, also leave notes and footprints for the follow-up. Socket common functions get host name and host address Socket.gethostname () Socket.gethostbyname () Import Socket host = Socket.gethostname () IP = socket

Summary of Socket-based simple chat tools (original) and socket chat tools During this time, I can't help but try to write a summary to encourage myself to study hard and write poorly. Please advise me! The following is a simple program for sending messages and files. First, the server needs to prepare two sockets and two threads as follows: // Communicate with the client private

The original meaning of the socket is "hole" or "socket". Here as a 4BDS UNIX process communication mechanism, take the latter meaning. The socket is very similar to a telephone socket. Take a national telephone network for example. Telephone calls are equivalent to each other 2 processes of communication, the area cod

Php method to send and receive data to the socket server, socket The example in this paper describes how PHP is sending and receiving data to the socket server. Share to everyone for your reference. Specific as follows: In PHP to send data to other programs, you need to use the socket function to PHP to the instance,

PHP socket connects to the server template, socket server. When the socket of PHP is connected to the server template, the socket server finds that some cached data needs to be accessed by external interfaces while organizing the new framework. What is more convenient is the php interface, PHP

Socket socket TCP Apisocket concept Socket, also known as "socket", is a network of interprocess communication data channel of an endpoint, or called a handle. IP address + port number you can uniquely identify a socket. The TCP/IP protocol family includes the t

Package helper. socket {import config. configvar; import flash. errors. ioerror; import flash. events. event; import flash. events. eventdispatcher; import flash. events. ioerrorevent; import flash. events. progressevent; import flash. events. securityerrorevent; import flash.net. socket; import helper. hh_fun; public class phpsocket extends eventdispatcher {private var msocket:

UDP-based socketsNon-connected unreliable data transmission, can be no server side, but no server side, the data sent will be directly discarded, and can not reach the server side1 #客户端2 Import Socket3 ip_port= (' 127.0.0.1 ', 8080) 4 bufsize=10245 sock_client=socket.socket (socket.af_inet,socket. SOCK_DGRAM) #SOCK_DGRAM就是UDP6 while True:7 msg=input (' >> '). Strip () 8 if not msg:continue9 Sock_client.sendto (Msg.encode (' Utf-8 '), Ip

First, the network program based on TCP protocol The following figure is a general process for client/server programs based on TCP protocol: After the server calls the socket (), bind (), listen () completes initialization, calls the accept () blocking wait, is in the listening port state, the client calls the socket () initialization, calls connect () sends the SYN segment and blocks waiting for the se

http://www.cnblogs.com/hq-antoine/archive/2012/02/11/2346474.html 1.1 ServerSocket classCreate a ServerSocket class and establish a listening service at the specified port of the computer on which the statement is run, such as:ServerSocket mylistener=new ServerSocket (600);This specifies that the port that provides the listening service is 600, a computer can provide multiple services at the same time, these different services are differentiated by port number, and different services are provide

Use socket to implement multiple connections and ssh functions, and socket to implement multiple sshI. Preface In the previous article, we already know that the client connects to the server through socket for a data transmission. How can we implement multiple data occurrences on the client? But does the server accept multiple clients?2. Send Chinese Information

After all data operations are completed, you can call the close () function to release the socket and stop any data operations on the socket:Close (sockfd ); You can also call the shutdown () function to close the socket. This function allows you to stop data transmission in a certain direction, while data transmission in one direction continues. For example, you can close the write operation of a

First, the socket to write the server steps:1. The first step is to create the socket object. Call the socket constructor. Such as: 1 socket = socket.socket (family, type) The family parameter represents the address family, which can be either af_inet or Af_unix. The Af_inet family includes Internet addre