rndc connection

[Scenario description] The client is started, and the server is started. The client initiates a connection The client sends a packet containing the four bytes of "Hutu" Client disconnection, server disconnection [Process diagram]No picture, no truth! [Socket status change diagram]No picture, no truth! Establish a connection protocol (three-way handshake) (1) the client sends a TCP packet with SYN

I. Two Connection Files in Linux and two methods for creating Connection Files in Linux: soft connection and hard connection, although both are connection files, but there is a big difference between the two. One is a file (or directory) similar to the shortcut function of w

I. Connection establishment of TCP ( three-time handshake )Assume that host A is running a TCP client program, and B is running a TCP server program. The TCP process at both ends is the close (off) state. a actively opens the connection, while B passively opens the connection. The TCP server process for B first creates the transport control block TCP, ready to a

Basic Principles of connectable objects and connection points In order to provide greater interaction between the component object and the customer, the component object also needs to actively communicate with the customer. The Component Object communicates with the customer through the outgoing interface. If a component object defines one or more output interfaces, this component object is called a connectable object. The so-called outbound interfac

　The TCP creation process and the link dismantling process are created automatically by the TCP/IP protocol stack relative to the socket developer. Therefore, the developer does not need to control this process. But it is quite helpful to understand the underlying operating mechanism of TCP. And for the network protocol engineers, such as written tests, is almost necessary to test the content. So here is a detailed explanation of the two processes.TCP Packet FormatSequence Number (32-bit): Used

1. The relationship between the HTTP protocol and the TCP/IP protocolLong connections and short connections to HTTP are essentially TCP long connections and short connections. HTTP belongs to the Application layer protocol, which uses the TCP protocol at the Transport Layer and IP protocol at the network layer. The IP protocol mainly solves the network routing and addressing problems, the TCP protocol mainly solves how to reliably pass the packet over the IP layer, so that all the packets sent b

1. Preface Apache Mina is an excellent project organized by Apache. Mina is the abbreviation of multipurpose infrastructure for networkapplications. It is a network application framework that helps users easily develop high-performance and high-reliability network applications. This article describes how to use Apache mina2.0 to implement TCP persistent connections and short connection applications.2. system introduction 2.1 System Framework The entir

The following small series will give you an analysis of the non-interactive connection of mysql interactive connections. I think it is quite good. I will share it with you and give you a reference. Let's take a look at the interactive operations: in other words, you open the mysql client on your local machine, that is, the black window, and perform various SQL operations in the black window, of course, it must be the tcp protocol. Non-interactive ope

What is a long connection? In fact, long connection is relative to the usual short connection, that is, long time to maintain the client and server connection state. The usual short connection procedure is: Connection-"data tra

clearly, today I will give you say these two values.First, the concept1) Interactive_time: means that if the spare NS (n is the value of this attribute), then the MySQL connection will be closed automatically. What kind of MySQL connection is turned off? Before, we were in the what is MySQL interactive and noninteractive operation? In this article, MySQL is a two-way operation, there are two kinds of

Original address: http://blog.sina.com.cn/s/blog_6d39b5be0101k6v4.html　　　　A long connection and short connection: Long connection: The client and the server to establish a connection, the connection after the establishment of continuous open, and then send and receive messag

From: Http://blog.csdn.net/camel_flying/article/details/6056910 1. persistent connection and short connection: Persistent connection: The client establishes a connection with the server. After the connection is established, the connec