ports and protocols

This article mainly introduces a simple WebSocket server that is compatible with the old and new Socket protocols in Python, if you need it, you can refer to the WebSocket technology introduced in HTML5 that needs to be used in a recent project. I thought it would be easy to handle it, who knows that there are a lot of troubles after the development is really started? although we are a long-experienced team in development and design, we have never bee

In the network, we usually use routers to allocate IP addresses. In the network protocol, the protocol that regulates the routing status is the routing selection protocol. Now let's take a look at the specific content of the routing protocol. First, let's take a look at its basic concepts and definitions. The routing selection protocol enables the router to dynamically broadcast and acquire paths and determine which paths are available for selection, and which one is the best path to transmit da

The network routing protocol is essential in the network. As a protocol for address management and allocation, there are many types of protocols. Next we will summarize several important routing protocols for you to explain. Generally, there are two typical routing Methods: Static Routing and dynamic routing ｡ Static Routing is a fixed route table set in a vro. Static Routing does not change unless the netw

objc_method_list *class_methods OBJC2_UNAVAILABLE; // 类方法列表 struct objc_protocol_list *protocols OBJC2_UNAVAILABLE; // 分类所实现的协议列表} This structure mainly contains the instance and class methods of the classification definition, where the Instance_methods list is a subset of the method list in Objc_class, and the Class_methods list is a subset of the meta-class method list.ProtocolProtocol is defined as follows:typedef struct objc_obj

objc_method_list *class_methods OBJC2_UNAVAILABLE; // 类方法列表 struct objc_protocol_list *protocols OBJC2_UNAVAILABLE; // 分类所实现的协议列表} This structure mainly contains the instance and class methods of the classification definition, where the Instance_methods list is a subset of the method list in Objc_class, and the Class_methods list is a subset of the meta-class method list.ProtocolProtocol is defined as follows:typedef struct objc_obj

Multicast routing is a good technology. It broadcasts data over the Internet. Unlike broadcast, due to broadcast storms, the router prohibits cross-route transmission of broadcast data. Multicast solves this problem. Currently, m$ software such as NetMeeting and WMS are widely used in multicast. Here we will discuss how to build your Linux into a multicast router.(Generally, gateways and routers do not support multicast data packets ). 1. Transmission Protocol Network Cameras provide many IP-b

, there were two versions of "0.9 and 1.0", with HTTP 0.9 "not" widely used, and HTTP 1.0 being widely used.In addition, it is said that the IETF will release the HTTP 2.0 standard next year. I'll wait and see.2. The relationship between HTTP and TCPSimply put, the TCP protocol is the cornerstone of the HTTP protocol--http protocol needs to rely on the TCP protocol to transfer data.In the network layering model, TCP is called the Transport Layer protocol, and HTTP is called the application-layer

versions of "0.9 and 1.0", with HTTP 0.9 "not" widely used, and HTTP 1.0 being widely used.In addition, it is said that the IETF will release the HTTP 2.0 standard next year. I'll wait and see. The relationship between HTTP and TCP Simply put, the TCP protocol is the cornerstone of the HTTP protocol--http protocol needs to rely on the TCP protocol to transfer data.In the network layering model, TCP is called the Transport Layer protocol, and HTTP is called the application-layer pr

(All of the following is the hand of pure hand, there are flaws in the place, please also contain a lot of information to send piglets to exchange!) ）(All content and annotations in this article are displayed in the recursive architecture, because the format display does not understand the point of understanding!) ）(In this paper, the command keyword is mostly used shorthand, if there is an unknown, it is best to type the command when you use TAB completion!) ）cisco-sw-three-layer switching betw

"not" widely used, and HTTP 1.0 being widely used.In addition, it is said that the IETF will release the HTTP 2.0 standard next year. I'll wait and see.2. The relationship between HTTP and TCPSimply put, the TCP protocol is the cornerstone of the HTTP protocol--http protocol needs to rely on the TCP protocol to transfer data.In the network layering model, TCP is called the Transport Layer protocol, and HTTP is called the application-layer protocol.There are many common application-layer

Source: The blog of the Green Snow ClubTCP HTTP UDP:is the communication protocol, that is, the rules of communication, only the two parties in accordance with this rule "speak", the other party can understand or serve.The relationship between TCP HTTP UDP three:TCP/IP is a protocol group, which can be divided into four levels: network interface layer, network layer, Transport layer and application layer.At the network layer are IP protocols, ICMP

uses similar authoritative protocols, such as Web Hypertext Transfer Protocol (HTTP) formatting and Simple Mail Transfer Protocol (SMTP) email protocols-evolved and evolved into a new and powerful standard. However, although SIP uses its own unique user proxy and server, it does not work in an integrated manner. SIP supports integrated multimedia services and works with a large number of existing

1. Introduction Digital video transmission is a communication method that people use vision to obtain information. Compared with other information transmission methods, digital video transmission is accurate, intuitive, and efficient. Due to the large amount of information transmitted by digital videos and limited bandwidth, the compression and encoding of videos, selection of transmission channels and network protocols, and IP multicast technology

languages. By using source code and documents, you can understand the architecture of the entire software and the implementation methods of a specific function. Object Code refers to the object code generated after the source code is compiled, similar to the "class library". It provides various interfaces for others to use. According to my understanding, it is something like common DLL, ActiveX, OCX controls. (I don't know if this is correct) The purpose of these two concepts is to make it clea

and other multimedia information, as a package protocol, IP addresses seem a little inadequate: Long latency and not a fixed value. packet loss leads to discontinuous signals and high distortion. To solve these problems, the vendor provides several solutions: the first solution is based on the priority of different objects, and some devices are mostly multimedia applications.) data packets can be uploaded first. The second scheme is based on the protocol priority. You can define which Protocol

HTTPS protocols: TLS, SSL, SNI, ALPN, PNP, snialpn HTTPS is now widely used. It brings security while introducing more complicated concepts to the Web. This includes a series of network protocols that have never been seen before. Now, based on the principle of HTTPS, Harttle tries to interpret these protocols in the most popular way. HTTPS Overview HTTPS is an H

Why are we always talking about router protocols? For the construction of a network, the use of the router protocol is directly related to the various performance and indicators of the network. So this is very important. With the complexity of the network structure, the use of a single Router Protocol can no longer meet the needs. Therefore, there will be a variety of router protocols in a network, so how t

infrastructure or central device. In this system, all nodes can be moved randomly, and can maintain contact with other nodes, that is, each mobile node acts as both a router and a terminal at the same time. When two user terminals cannot communicate directly, communication is usually achieved by means of the routing function of other nodes ｡ The routing protocol is the basis for communication between mobile nodes in the Ad-hoc network. It also directly affects QoS and security of communication

The legendary WCF (1): Is this hard to learn?The legendary WCF (2): What about service agreements?Legendary WCF (3): multiple protocolsLegendary WCF (4): send and receive SOAP HeadersLegendary WCF (5): data protocols ()Legendary WCF (6): data protocols (B)Legendary WCF (7): "one-way" "two-way"Legendary WCF (8): Play with message protocolsLegendary WCF (9): stream and file transferLegendary WCF (10): messag

The legendary WCF (1): Is this hard to learn?The legendary WCF (2): What about service agreements?Legendary WCF (3): multiple protocolsLegendary WCF (4): send and receive SOAP HeadersLegendary WCF (5): data protocols ()Legendary WCF (6): data protocols (B)Legendary WCF (7): "one-way" "two-way"Legendary WCF (8): Play with message protocolsLegendary WCF (9): stream and file transferLegendary WCF (10): messag