hdlc protocol

PotocalN. Agreement; protocol; etiquette; Diplomatic etiquetteIn the field of computer network, the word potocal is usually translated as "protocol": IP Protocol, TCP Protocol, HTTP protocol (too many omit 1000 words) ~It refers to the agreement between the two parties on ho

The category classification file in OC is equivalent to some classes in C #, and the Protocol protocol file in OC (essentially a header file) is equivalent to an interface in C #. Here is a brief explanation of the two files in OC today.Since the video in the Xcode version is low, resulting in the classification files and protocol files are not found, and finally

Here is an example of the relationship between Uitableviewcontroller and UITableView://------------------------------------------------------------------------//UITableViewController.h@interfaceUitableviewcontroller:uiviewcontroller @property (nonatomic,retain) UITableView*TableView;@end//------------------------------------------------------------------------//UITableView.h@protocolUitableviewdatasource;@protocolUitableviewdelegate@optional//The delegate method is optional@end@interfaceUitablev

Adb overview and Protocol Reference, adb overview Protocol Reference Original article: https://github.com/android/platform_system_core/blob/master/adb/OVERVIEW.TXT) Implementation notes regarding ADB. ADB implementation Annotation 1. General Overview: 1 Overview The Android Debug Bridge (ADB) is used: ADB is used in the following scenarios: Keep track of all Android devices and emulators instances connect

I. Analysis of the Three-way handshake protocol First, let's look at one of the most common things in our life: During our online shopping, we often chat with customer service like this: We asked Customer Service about something, Customer Service answered, and then we broke the network... After a while, we will log on again and receive a response from the customer service. This interaction process completes a response three times. This process

1 Introduction of the Protocol 1.1 Protocol Overview The intermediate system to the intermediate system Is-is (intermediate system to Intermediatesystem) belongs to the Internal Gateway Protocol IGP (Interior Gateway Protocol) for internal autonomous systems. Is-is is also a link state

about iOS object-c categories-static methods for category categories and private variables, protocol protocol2014-02-18 19:57 315 People read Comments (0) favorite reports 1.category, the method of overwriting the original class, even if does not refer to the category header file, can also overwrite, Respondstoselector: Method can also respond.2.category, there can be no private variables, but there can be @property declaration, the property declar

In the learning hyperlink, the HTML click on the QQ icon will automatically start their own local QQ client, the method is to use the Hyperlink protocolSome common protocols are as follows:File resources are files on the local computer. Format file:///FTP accesses resources through FTP. Format ftp://Gopher accesses the resource through the Gopher protocol.HTTP accesses the resource over HTTP. Format/HTTP/HTTPS accesses the resource through secure HTTPS. Format https://The mailto resource is an e

The previous article has introduced the composition of the Protocol. A protocol generally has the following features: protocol header + Length + Data + verification. The text format can intuitively define that carriage return and line feed are the end of the Protocol, therefore, we can omit the Data Length and add the

The previous article has introduced the composition of the Protocol, a protocol, generally has: protocol header + length + data + checksum, text format can be intuitively defined carriage return line is the end of the protocol, so we can omit the length of the data, increase the end of the

Bluetooth protocol (2) specifications of the Bluetooth protocolChapter 2 Bluetooth protocol specifications (RF, baseband Link Control, and link management) The Bluetooth protocol is a rule for information exchange between bluetooth devices. Like the Open Systems Interconnection (OSI) model, the protocol system of Blue

The UDP protocol is also an unreliable transport protocol compared to TCP. So what is the occasion to use the UDP protocol:1. Efficient and reliable environment2. Because the UDP overhead is small (1) does not need three handshake 2) the transmission process does not need to confirm 3), it is appropriate to communicate in a light-weight environment, such as TFTP,

1. IntroductionIP is the most central protocol in the family of TCP/IP protocols. All TCP, UDP, ICMP, and IGMP data are transmitted in an IP datagram format. IP provides unreliable, non-connected datagram delivery services.(1) unreliableIt does not guarantee that IP datagrams will successfully reach their destination. IP only provides the best transport service. In the event of an error, such as a router temporarily running out of buffers, IP has a si

ObjectiveThe MQTT protocol focuses on network and resource-constrained environments, and it is normal to not consider the Web environment at the beginning of the establishment. Nevertheless, it does not mean that it is not suitable for the HTML5 environment.HTML5 WebSocket is a two-channel communication based on TCP, similar to TCP communication, and is suitable for web browser environments. Although the MQTT gene plane chooses TCP as the communicatio

First, prefaceWith the broadcast technology hot, all the Live app, the early live app's various request protocol parameter information did not do any encryption measures, but slowly someone began to use the back door began to brush powder attention tool, you can make a new small Hua Dan minute into the net red. So somewhere in this problem, the live app starts encrypting the network request parameters. So that is the focus of this article analysis. Th

　　This article is mainly for the access to SVN two protocols to illustrate one is the SVN itself service protocol, one is to run HTTP through Apache Access SVN Protocol SVN protocol access format similar to the followingSvn://192.168.1.34/repos/cottonThe SVN protocol has a certain disadvantage is that only through the

This article illustrates how Android programming uses HTTP protocol and TCP protocol to upload files. Share to everyone for your reference, specific as follows: There are two ways to upload files to Android, the first is based on the HTTP protocol httpurlconnection, and the second is the socket based on the TCP protocol