hdlc protocol

Simple implementation of Mina custom protocol and mina custom protocol Because the company needs to create an automatic weighing system for electronic scales and implement a custom protocol, Mina is used for simple implementation. Because it is relatively simple, code is directly used. Change to Netty if you have timeServer Package net. heartma. server; import ja

One-phase commit protocol and two-phase commit protocol for transactions Because transactions need to implement ACID, that is, atomicity, consistency, isolation, and durability, a certain mechanism is required to ensure that transactions are committed in stages. XA: XA protocol, which specifies the Transaction Manager and resource manager interfaces and adopts th

Http protocol and http protocol details HTTP is an object-oriented protocol at the application layer. It is applicable to distributed hypermedia information systems due to its simple and fast method. It proposed in 1990 that, after several years of use and development, it has been continuously improved and expanded. Currently, the sixth version of HTTP/1.0 is use

"Protocol" is an indispensable concept for understanding servers and networks."Agreement (Protocol)" has the meaning of "rules, provisions".In fact, the function of "protocol" is very wide, in the field of communication, "protocol" provides "in the communication, in what circumstances, in what order, what kind of way t

TPC/IP Protocol is a Transport layer protocol, which mainly solves how data is transmitted in the network, and HTTP is the application layer protocol, which mainly solves how to wrap the data. regarding the relationship between TCP/IP and HTTP protocol, the network has a relatively easy to understand:"When we transmit

formation, traffic control, data error detection, and re-transmission. At this layer, the unit of data is frame ). Data link layer protocols include SDLC, HDLc, PPP, STP, and frame relay. Device: bridge adapter switch SwitchPhysical Layer) Specifies the mechanical, electrical, functional, and process characteristics of communication equipment for establishing, maintaining, and removing physical link connections. Specifically, the mechanical character

The registration and initialization process of the pci NIC Driver is implemented. the TCP/IP protocol stack and the pci protocol stack are implemented after soft interruptions occur.0x01 reason The purpose of this study is to follow the outline below: The three handshakes, data transmission, and four handshakes are debugged by the server client program. The setup environment is as follows: debug the Linux k

I. background and functions of the SIP protocolSIP (Session Initiation Protocol) is developed to help provide advanced telephone services that span the internet. Internet telephone IP telephone) is evolving to a formal business telephone model, and SIP is an important member of the series of protocols to ensure the implementation of this evolution.SIP is part of the IETF standard process. It is built based on simple SMTP Mail Transfer

HTTP is a stateless protocol, with two consecutive requests for the same session that are not known to each other, and they are parsed by the newly instantiated environment, which does not save any information about the session, except that the application itself may have all the information stored in the global object.Own understanding, In asp: Each time the page is submitted to the server does not have any relationship, each time the information rec

Tutorial on using GTIDs replication protocol and interrupt protocol in MySQL MySQL5.6 has many new features, and many of them are interested in the global transaction sequence number function (GTIDs ). The reason why everyone is very interested in this feature is also very understandable, that is, it is always very troublesome to re-connect the slave server and a new master server, however, it becomes easy

Tutorial on using GTIDs replication protocol and interrupt protocol in MySQL, mysqlgtids MySQL5.6 has many new features, and many of them are interested in the global transaction sequence number function (GTIDs ). The reason why everyone is very interested in this feature is also very understandable, that is, it is always very troublesome to re-connect the slave server and a new master server, however, it b

The Transport layer provides communication services to the application layer above it, which belongs to the highest level of the communication section and is also the bottom of the user's function. Two hosts are actually communicating with each other in a two host application process . Communication between application processes is also known as end-to-end communication . The messages of different processes in the application layer are delivered down to the transport layer through different

Protocol (Protocol) 's role:1. Specification interface, used to define a common set of interfaces;2. Constrain or filter the object.Agent (Delegate):It is in itself a design pattern that delegates an object I. Define a common set of interfaces1 /** Agreement*/2@protocol Executeprotocol 3 4 @required5 /**6 * @brief A method that must be implemented7 */8-(Nsuinteg

Tcp-ip detailed volume 3:TCP transaction protocol, HTTP, NNTP, and UNIX domain protocol "PDF" Download Link:https://u253469.pipipan.com/fs/253469-230062539Content IntroductionThe TCP. IP Detail (Volume 3): CP Transaction Protocol. The HP.P and UIX domain protocols are the continuation of the TCP/IP detailed series. The main contents include: TCP transaction

Note: The content of this article comes from the Netizen God, as the study note record in this. If there is a similar, please understand;The TCP/IP protocol stack is divided into four layers: application layer, Transport layer, network, data link layer, each layer has corresponding protocol;The so-called protocol: is a format for both parties to transmit data. Th

first, the protocol formatThe format of the ARP protocol is as follows: two chunks to explain: 1, the red box up is: Ethernet header, a total of 14 bytes. This is part of the packet that you send whatever Ethernet protocol you want, and it is necessary. Description of each field: Field The number of bytes occupied Description

protocol [' pr?ut?k?l] (example:http://blog.sina.com.cn/s/blog_6aafe9c90100yozz.html )I. Descriptiontwo classes for communication, with the protocol is more convenient. 1. The protocol declares a method that can be implemented by any class2. The protocol is not a class, it defines an interface that other objects can

HTTP is a stateless protocol, with two consecutive requests for the same session that are not known to each other, and they are parsed by the newly instantiated environment, which does not save any information about the session, except that the application itself may already be stored in the global object. own understanding, in the ASP: every time the page submission server does not have any relationship, each time the information recorded on the pag

We have analyzed some protocols and the content of the protocol stack. I believe everyone understands the content of the H.323 protocol. Here we will explain the development of this protocol stack. Developing an H.323 protocol stack is an extremely arduous task in the communication design process. The difficulty lies i

------Java Training, Android training, iOS training,. NET training, look forward to communicating with you! ------- Can be used to declare a whole bunch of methods (cannot declare member variables) As long as a class adheres to this protocol, it is equivalent to having all the method declarations in this agreement As long as the parent class adheres to a protocol, the subclass also adheres