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devices constantly detect the network bus, including the time between pauses. When the first domain (address field) is received, each device is decoded to determine if it is destined for itself. After the last transmission character, a pause of at least 3.5 character time is calibrated to the end of the message. A new message can begin after this pause. The entire message frame must be lost as a continuous flow. If there is a pause time of more than 1.5 characters before the frame completes, th
TCP/IP protocol ----- excellent notes, tcpip protocol -----1. Introduction The TCP/IP Protocol is not a single TCP Protocol or an IP Protocol. It is a group of protocols, including TCP and IP Protocol, UDP
First, Introduction The Protocol deals with properties and methods that act like abstract classes in Java, and types in swift implement some of the agreed properties and methods by adhering to the protocol. The protocol in Swift is declared using the Protocol keyword. The protocol
IntroductionHTTP is an object-oriented protocol belonging to the application layer, which is suitable for distributed hypermedia information System because of its simple and fast way. It was proposed in 1990, after several years of use and development, has been continuously improved and expanded. Currently used in the WWW is the sixth edition of Http/1.0, http/1.1 standardization work is in progress, and Http-ng (Next Generation of HTTP) has been prop
what is the HTTP protocol?HTTP is an abbreviation for the Hyper Text Transfer Protocol (Hypertext Transfer Protocol). Its development was the result of collaboration between the World Wide Web Association (Wide) and the Internet Working Group IETF (Internet Engineering Task Force), which eventually released a series of RFC,RFC 1945 defines the http/1.0 version. T
The difference between TCP protocol and UDP Protocol (RPM)First we find out that the TCP protocol and the UCP protocol and the TCP/IP protocol, many people confused, has always been the TCP/IP protocol and the difference between t
Part1. The most familiar strangersCompared with the TCP/UDP protocol, the HTTP protocol may be more familiar, as everyone can see the http://xxx.com word everywhere. But, reallyThe students who are aware of the HTTP protocol may be just a few, and many people don't even know what "404" means. And this article, it is to let everyone more in-depth understandingNext
IP protocol Header formatAddress Resolution Protocol ARPReverse Address Resolution Protocol RARPInter-network Control Message Protocol ICMPInternet Group Management Protocol IGMP IP Datagram HeaderIP Datagram Header format:The highest bit is on the left and is recorded
PPP Internet Protocol Control Protocol (ipcp) 1. Introduction PPP has three main components: Encrypts data packets on a serial line; The Connection Control Protocol (LCP) used to establish, configure, and detect data link connections ). The Network Control Protocol (NCP) protoc
Note: This is my translation, may not be accurate, may have errors, but basically understandable, hope to be helpful to everyone. (reproduced please specify the source: This article from Learnhard Blog: http://www.codelast.com/ http://blog.csdn.net/learnhard/) This tutorial provides a basic C + + Programmer ' s introduction to working with protocol buffers. By walking through creating a simple example application, it shows · Define message formats in
SMTP is used to deliver e-mail messages on the Internet. Document RFC821 provides all the details of the agreement. But you just have to remember the following-the basic commands and methods of the agreement. The principle of the protocol is simple. Nothing more than a client computer sending a command to the server, and then the server returns some information to the client computer. The commands sent by the guest room and the server response are s
Introduction There are many types of caching: Server caching, Third-party caching, browser caching, proxy caching, gateway caching, database caching, and so on. The browser cache is the least expensive because the browser cache relies on the client and consumes almost no server-side resources. Today's summary is also associated with browser caching. Browser caching must be very familiar, simply that the browser on the disk to the most recent user requested data storage, when we request this page
AJP13 is the directional package protocol. For performance reasons, the binary format is used to transmit readability text. The Web server is connected through a TCP connection and a servlet container. To reduce the cost of process generation sockets, the Web server and the servlet container try to maintain a persistent TCP connection and reuse a connection for multiple request/reply loops. Once a connection is assigned to a specific request, it is no
UDP belongs to the transport layer together with the TCP mentioned earlier. UDP differs from TCP in that it is a non-connection-oriented protocol, that is, when both parties communicate with each other, they do not need to establish a connection beforehand. So the UDP header saves a lot of fields, and the UDP header is only 8 bytes. The UDP header consists of the following: The UDP header contains only the source port and destination port, plus th
Mobile device management (MDM) and OMA (OTA) DM protocol wizard (II) -- WAP protocol (1) Connect to "mobile device management (MDM) and OMA (OTA) DM protocol wizard (I )" 16. Can I directly access the WiMAX device through a web server?For more information, see "WAP protocol (1) -- Chapter 1 WAP network deployment"17. C
The linux OSI Layer-7 model, TCP/IP protocol stack, and the structure of each layer reveal big secrets. The osi protocol stack When I learn Linux, I know the OSI model even if I am a little cute. What ?! You don't know !!! Okay, this secret is taken away. Thank you ~~~ I,Two protocols (1OSI protocol model (layer-7) International ProtocolPDU: The data unit transm
1. TCP connectionTCP (transmission Control Protocol) transmission protocol. TCP is the host-to-host layer of the Transmission Control Protocol, providing a reliable connection service, using three-time handshake confirmation to establish a connection. The bit code is the TCP flag bit, there are 6 kinds of marking: SYN (synchronous set up) ACK (acknowledgement ack
TCP the difference between protocol and UDP protocolfirst, let's get this straight.TCPagreements andUCPAgreement andTCP/IPagreement, a lot of people are confused, has always been saidTCP/IPAgreement andUDPthe difference between the protocols, I think it is not clear from the nature of network communication! TCP/IPthe protocol is a protocol cluster. It includes a
IP datagram Header highest bit on the left, recorded as 0 bit, the lowest bit on the right, recorded as a bitVersion:4 bits, refers to the IP protocol version of the current IP protocol version number is 4 (that is, IPV4)Header Length:4 bits, the maximum value that can be represented is 15 units (4 bytes in one unit) so the maximum of the first ministerial degree of the IP is 60 bytesDifferentiated Services
Tutorial on http protocol and http protocolSummary Hyper Text documents contain hyperlinks that point to other resources. Hypertext document is the foundation of World Wide Web (www. The HTTP protocol solves the problem of file transmission. HTTP is an application layer protocol, mainly based on TCP protocol (occasion
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