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Week 8 of Python learning from scratch: socket and python week 8Socket network programming 1, Socket programming (1) Socket Method Introduction S
for the TCP three-way handshake process to be completed.2. Queue with Connection completed As shown in: 4. Accept Function Include header file Function: returns the first connection from the completed connection queue. If the completed connection queue is empty, the connection is blocked.Prototype: int accept (INT sockfd, struct sockaddr * ADDR, socklen_t * addrlen );ParametersSockfd: server socketADDR: the socket address of the peer is returned.Ad
thrown when the domain name is incorrect. The following statement throws a Unknownhostexception exception:Socket SOCKET1 = new socket ("www.ptpress123.com.cn", 80); public class Protocolexception extends IOException This exception is not often thrown. For unknown reasons, TCP/IP packets are corrupted, and a Protocolexception exception is thrown. public class Sockettimeoutexception extends Interruptedioexception If the serv
different threads or other shared resources. synchronous TCP and asynchronous TCP refer to the two different working modes used in TCP programming, that is, whether the program continues to execute the statements from execution to method, receipt, or listening,Asynchronous TCP continues to be executed. If the program is blocked, synchronous TCP is used.. In response to the synchronous and asynchronous modes of work, the. NET Framework for applicati
acknowledgement.(1) Server monitoring: Is the server end socket does not locate the specific client socket, but in the status of waiting for the connection, real-time monitoring network status.(2) Client request: Refers to the client's socket to make a connection request, to connect to the target is the server-side socket
the socket interface is a TCP/IP network API, the socket interface defines a number of functions or routines that programmers can use to develop applications on a TCP/IP network. To learn about TCP/IP network programming on the Internet, you must understand the socket interface. The
"Network Programming for Microsoft Windows 2nd"2. Berkeley socket Interface (Berkeley socket), winsock1.1 backwards compatible with Berkeley sockets, so porting to other platforms is also more convenient.Reference reading: Http://zh.wikipedia.org/zh-cn/Berkeley_sockets."Network Programming for Microsoft Windows 2nd":T
in which they are sent. Then TCP is a reliable protocol. The order of packets received by the receiving end is consistent with the order of the packets on the sending side.In short, TCP is suitable for network services such as remote login (rlogin,telnet) and file Transfer (FTP). Because the size of the data that needs to be transferred is indeterminate. UDP is simpler and lighter than TCP. UDP is used to achieve higher real-time or packet loss is not important for some services. UDP packet los
Java TCP/IP Socket programming Series [Java TCP/IP Socket] Message frame and resolution in application protocol [Java TCP/IP Socket] Build and parse custom protocol messages [Java TCP/IP Socket] a tcp server based on a thread pool [Java TCP/IP
The socket programming here does not mean using the XMLHttpRequest object, but actually creating a socket to implement and send and receive data. Use JavaScript to invoke Java's NIO interface to implement socket programming. Implement a simple echoserver, create a file: Echo
Socket (socket) communication { network communication is actually the communication between sockets }, first understand the concept: "from Baidu Encyclopedia""Two programs use a two-way communication connection to exchange data, and one end of the connection is called a socket. "It can be said that the socket is a netw
Socket programming, socket I. Data Types and related functions of socket addresses Socket API is an abstract network programming interface that is applicable to various underlying network protocols, such as IPv4, IPv6, and UNIX Do
Simplest Socket socket programming (2)-Poll () and epoll () Author: gaopenghigh. For more information, see the source. (Original address) This document describes how to usepoll()Andepoll()The main step of Socket network programming in UNIX environment is to implement a simp
the TCP transmission efficiency is not as high as UDP.2,UDPIt is simple to operate and requires less monitoring, so it is usually used for client/server applications in decentralized systems with high reliability on the LAN. For example, video conferencing system, does not require audio and video data is absolutely correct, as long as the consistency can be guaranteed, in this case, the obvious use of UDP is more reasonable. Three, Java network programming
1. What is socket? A socket can be considered as a programming interface between a user process and the kernel network protocol stack.Socket can be used not only for inter-process communication on the local machine, but also for inter-process communication between different hosts on the network. Socket API is an abstr
socket.shutdownoutput (); 3. Close Resource pw.close (); Os.close (); Socket.close (); } catch (IOException ex) { Logger.getlogger (Client.class.getName ()). log (Level.severe, NULL, ex);}}} After that, run the server side and run the results: = = Server is about to start, waiting for client connection = =Then run the client, no output. At this point, to see the output of the server-side class, the discov
JAVA Study Notes (fifty-nine)-Socket programming, Study Notes socketClient Import java. io. IOException; import java.net. datagramPacket; import java.net. datagramSocket; import java.net. inetAddress; import java.net. unknownHostException;/** Client */public class Client {public static void main (String [] args) throws IOException {/** send data to the server * // 1. define the server address, port, and dat
node. JS's net module provides a socket programming interface that allows us to implement application protocols using a lower-level socket interface. This time we look at a simple echo server example, including the service side and the client code.Sockets can also be programmed using JavaScript, haha, this acid is cool!CodeTwo parts of the server and the client.E
;importjava.io.outputstream;importjava.io.printwriter;import java.net.serversocket;importjava.net.socket;/*** Create a service thread to continuously respond to customer requests * @author ljb* @version 2015 March 12 */publicclassserverthreadextendsthread {Socketsocket=null;publicServerThread (Socketsocket ) {this.socket=socket;}// respond to customer requests publicvoid run () {try{// get input stream inputstream is=socket.getinputstream ();// to ge
Socket (socket) communication { network communication is actually the communication between sockets }, first understand the concept: "from Baidu Encyclopedia" "Two programs use a two-way communication connection to exchange data, and one end of the connection is called a socket. " It can be said that the socket is a ne
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