hop sockets

This article mainly describes how to design a client/server socket (socket) class based on multithreading. The developer/designer can decide whether to choose another thread depending on the specific needs. There are many other sockets classes on the network, but none can provide callback functionality (event monitoring) to your application as this class does. The classes designed in this article provide you with the following event monitoring: Comple

This article describes some functions that can be obtained by deriving your own class from the socket class. You can derive your own socket class from CAsyncSocket or CSocket to add your own functions. Specifically, these classes provide a large number of virtual member functions that can be rewritten, including OnReceive, OnSend, OnAccept, OnConnect, and OnClose. You can override the functions in the derived socket class and use the notifications they provide when a network event occurs. The Fr

Socket BasicsPHP uses the Berkley socket library to create its connection. A socket is simply a data structure. You use this socket data structure to start a session between a client and a server. This server is always listening ready to produce a new session. When a client connects to a server, it opens a session on a port that the server is listening on. At this point, the server accepts the client's connection request, then it loops. Now the client is able to send messages to the server, and

Java uses two sets of classes to implement sockets: one is socket and ServerSocket class, based on TCP protocol implementation, one is Datagramsocket class, based on UDP protocol.first, Socket classThere are four types of constructors for the socket class:(1) socket (string address, int port)The constructor specifies the address and port number of the native, and retrieves whether the established port number is open.(2) socket (inetaddress address, in

Author: Hu Huisheng Xie xiaofang In the design of a new Fully Distributed Ship command and control system, the communication structure shown in Figure 1 needs to be implemented. The line in the figure indicates the possible connection of the system during work, it can be dynamically connected or disconnected during system operation. The core problem of implementing the system is to design a universal communication interface module. Figure 1 communication structure of a fully distributed system

, enabling simultaneous support both on the server side and on the client side. At present, the SSL protocol using public key technology has become the industry standard of secure communication on the Internet. This article focuses on the SSL protocol and SSL programming two aspects of the author's understanding of SSL.Preliminary Introduction to SSL protocolThe Secure Sockets Layer protocol enables communication between user/server applications to be

other side is online, after the end of the communication must be disconnected (TCP three handshake).While UDP (User Datagram Protocol) is a no-connection protocol, there is no need to establish a virtual link before communication, no need to determine whether the other side is online.The two are completely different protocols, and each has 0-65535 ports.As mentioned above, all application layer protocols are located in the application layer, and if you need to communicate across hosts, you must

This article turns from the 5 pitfalls of Linux socket programming in IBM Blog."Developing reliable Web applications in a heterogeneous environment."The Socket API is a standard API for practical application development in Web applications. Although the API is simple, novice developers may experience some common problems. This article identifies some of the most common pitfalls and shows you how to avoid them.First introduced in the 4.2 BSD UNIX® operating system, the

PHP Sockets Extended InstallationToday installation cacti discovery requires PHP sockets extension, and now the LNMP is not installed, so think of the Phpzie tool installation extension, the installation method is as follows: CD php-5.3.8/ext/sockets/ /usr/local/php/bin/phpize ./configure--enable-sockets--w

(in some respects similar to a standard input/output stream) provides an ordered, reliable, bidirectional byte stream connection. PS: Use the ordinal mechanism in TCP to ensure that large messages will be fragmented, transferred, and re-reorganized. This is much like a file stream, which accepts large amounts of data and writes them to the underlying disk as small chunks of data.Flow sockets are specified by the underlying sock_stream, which are impl

First use of IntelliJ idea, after configuring Tomcat, start the report below exceptionInfo: Command line argument: (x86) \java\servers\apache-tomcat-7.0. -\temp .-8-Ten +: -: -org.apache.coyote.AbstractProtocol init info: Initializing Protocolhandler ["http-bio-8080"] .-8-Ten +: -: -org.apache.coyote.AbstractProtocol init info: Initializing Protocolhandler ["ajp-bio-1099"] .-8-Ten +: -: -org.apache.coyote.AbstractProtocol init critical: Failed to initialize end point associated with Protocolh

processes if need to communicate the most basic premise can be able to uniquely identify a process, in the local process communication we can use PID to uniquely identify a process, but the PID is only local only, the network of two process PID collision probability is very large, this time we need to separate its path, We know that the IP address can uniquely identify the host, and the TCP layer protocol and port number can uniquely identify a process for the host, so we can use the IP address

version number 4-bit header length 8-bit service type 16-bit total length___________________________________________________________________________________________16-bit indication 3-bit flag and offset__________________________________________________________________________8-bit time-to-Live 8-bit protocol 16-bit IP header checksum_________________________________________________________________________________________32-bit Source IP address__________________________________________________

When accessing a website in Google's browser, only some images and video files stored on Qiniu can be loaded, occupying all (6) scokets, the browser always prompts that it is requesting available sockets and does not know how to solve them. When you access a website in Google's browser, you can only load some images and video files stored on Qiniu, occupying all (6) scokets. the browser keeps prompting you to request available

specify the Af_route domain socket (af_route,sock_raw,0), create a routing socket, which can only support the original socket, and only the superuser can create the socket. After you create a routing socket, as with other sockets, you can call read () or the write () function to read and write, but since the system kernel completes the provision and modification of routing information based on messages written by the application, it differs from othe

Objective Based on C/s architecture.Web Service: Application layer protocol. (HTTP,HTTPS)Solve a specific type of application, with the application space of some kind of application to be responsible for the completion.Client: Browser-to-Application layer protocol: Http-->web Server (socket-based communication)======================================== Split Line =============================================The communication process between networks relies on socket files (ip/port) for commu

012-11-16 11:38:48 org. apache. coyote. http11.Http11Protocol initSevere: Error initializing endpointJava.net. SocketException: Unrecognized Windows Sockets error: 0: JVM_BindAt java.net. PlainSocketImpl. socketBind (Native Method)At java.net. PlainSocketImpl. bind (PlainSocketImpl. java: 365)At java.net. ServerSocket. bind (ServerSocket. java: 319)At java.net. ServerSocket. At java.net. ServerSocket. At org.apache.tomcat.util.net. DefaultServerSocket

One, TCP sockets1. Low version TCP socketsServer-Side Client　　　　2, improved version of TCP socketsServer-Side Client　　　Two, the UDP socketServer Client　　Note: A UDP socket can support simultaneous access by multiple clients, but TCP sockets do not, because TCP sockets have a TCP three handshake four times.What is the difference between recv and recvfrom?1, advance notice:1.1TCP is send message, recv receive

a process communicates, both parties must first create an endpoint, otherwise there is no way to establish a connection and communicate with each other. Just like before the phone call, both sides must each have a telephone. Inside the net, each socket is described in a semi-relevant description: (Protocol, local address, local port) A complete socket has a local unique socket number, which is allocated by the operating system. Most importantly, the socket is designed for client/server models a

Preface There are two modes of communication between Nginx and FastCGI, one is TCP and the other is UNIX Socke. Each of the two methods have advantages and disadvantages, here first gives two kinds of configuration methods, and then the performance, security, and so on to make a summary. TCP is using TCP ports to connect 127.0.0.1:9000The socket is a socket/dev/shm/php-cgi.sock using UNIX domain sockets (many tutorials use the path/tmp, and the path/d