handshake b2b

Three-way handshake and four-way handshake for TCP/IP protocol I. TCP Message formatFor more information about the TCP/IP protocol, see "TCP/IP protocol details. The following figure shows the TCP packet format: Figure 1 fields in the TCP packet format need to be described below: (1) sequence number: Seq number, which occupies 32 bits. It is used to identify the byte stream sent from the TCP source end to

Three-time handshake and four-time handshake process resolution for TCP/IP protocol One, TCP message formatFor more information on TCP/IP protocol, see the three volumes of the TCP/IP protocol. The following is a TCP message format diagram:Figure 1 TCP Message FormatThere are several fields in the diagram above that need to be highlighted below:(1) Serial number: SEQ sequence number, which is 32 bits, is us

Three-way handshake to establish a connection: First handshake:The client sends the SYN Packet (SEQ = x) to the server and enters the syn_send status. wait for confirmation from the server; The second handshake:When the server receives the SYN packet, it must confirm the customer's Syn (ACK = x + 1) and send a SYN Packet (SEQ = Y), that is, the SYN + ACK packet, the server enters the syn_recv status; The third handshake:The client receives the server'

TCP/IP protocol three-way handshake and four-way handshake (establish connection and disconnect), tcpip 1. TCP/IP protocol Overview The TCP/IP Protocol (TransmissionControl Protocol/Internet Protocol) is also called the transmission control/Internet Protocol and network communication Protocol. This Protocol is the basis of the Internet. TCP/IP is the basic communication protocol used in the network. Althoug

TCP three-way handshake and four-way handshake Three-way handshake TCP connections are connected through three handshakes. First handshake When the client initiates a connection request to the server, the client sends the synchronous sequence number SYN to the server. Here, we set SYN to m and wait for the server to c

The RS-232 mode allows simple connections to three lines: Tx, Rx, and ground. However, for data transmission, both parties must use the same baud rate for data at regular intervals. Although this method is sufficient for most applications, the use of this method is limited when the receiver is overloaded. In this case, the serial handshake function is required. In this section we discuss three of the most common RS-232 handshakes: Software handshakes,

1. Establish a connection protocol (three-way handshake)(1) the client sends a TCP packet with SYN flag to the server. This is packet 1 during the three-way handshake.(2) The server responds to the client. This is the first packet in the three-way handshake. This packet carries both the ACK mark and SYN sign. Therefore, it indicates the response to the client SYN

1. TCP (Transmission Control Protocol) Transmission Control Protocol TCP is the transmission control protocol used by the host to control the host layer. It provides reliable connection services and uses three handshakes to establish a connection: 2. Three-way handshake The first handshake: host a sends a packet with a SYN = 1, generates a data packet with seq = x at random to the server, and host B is know

Compared with socket developers, the TCP creation and link Division processes are automatically created by the TCP/IP protocol stack. therefore, developers do not need to control this process. however, it is helpful to understand the underlying TCP operation mechanism.In addition, a written examination such as a network protocol engineer is almost mandatory. the enthusiasm of the company for this issue is beyond my expectation :-). This problem is sometimes emphasized before the interview in the

http://blog.csdn.net/dotnetpig/article/details/6776999 Recently interviewed a lot of companies, in addition to Baidu, other companies Taobao etc will ask you TCP three handshake in the end is what, why is three times shaking hands instead of four times shaking hands. After reading this article, I am sure I will find the answer. 1, establish the Connection agreement (three times handshake)(1) The client sen

TCP three-way handshake and four-way handshakeCompared with SOCKET developers, the TCP creation and link Division processes are automatically created by the TCP/IP protocol stack. therefore, developers do not need to control this process. however, it is helpful to understand the underlying TCP operation mechanism. in addition, there are network protocol engineers such as the written examination, almost mandatory content. my company is very enthusiasti

Disclaimer: This article is reprinted ~ Shows the TCP/IP state machine: In TCP/IP, TCP provides reliable connection services and uses three handshakes to establish a connection, as shown in figure 1. (Syn packets indicate the flag SYN = 1, ACK packets indicate the flag ACK = 1, SYN + ACK packets indicate the flag SYN = 1, ACK = 1) (1) first handshake: when a connection is established, client a sends the SYN Packet (seq_number = J) to server B and en

I. TCP three-way handshake and four-way handshake Flag space: Syn (synchronous online) Ack (acknowledgement confirmation) Psh (push transfer) FIN (finish) RST (reset) URG (Urgent urgent) Sequence Number: Sequence Number (sequential number) -- seq Acknowledge number (confirmation number) -- ack Format of the first handshake pack

There are a lot of articles on the internet about why TCP needs three handshakes when connecting, and four handshake when closing the connection. A lot of principles are spoken. So many people are hard to understand.In fact, there is only one sentence: The TCP connection is between two endpoints. Because the TCP connection is a reliable connection, it requires two endpoints to send the request and receive confirmation whether the connection is establi

Tcp establishes a connection and disconnects. This problem is frequently asked during many interviews. Although many people know that tcp has three handshakes and four handshakes, however, if you want to explain the tcp connection and disconnection in detail, it will be a bit problematic .... TCP (Transmission Control Protocol) Transmission Control Protocol Three-way handshake: TCP is the transmission control protocol used by the host to control the

TCP three-way handshake and four-way handshake 1. Establish a connection protocol (three-way handshake) (1) the client sends a TCP packet with SYN flag to the server. This is packet 1 during the three-way handshake. (2) The server responds to the client. This is the first packet in the three-way

TCP establishes a connection and disconnects. This problem is frequently asked during many interviews. Although many people know that TCP has three handshakes and four handshakes, however, if you want to explain the TCP connection and disconnection in detail, it will be a bit problematic .... TCP (Transmission Control Protocol) transmission control protocol three-way handshake: TCP is the transmission control protocol of the host to the host layer, pr

on the slowest point. If a and B constitute a software based on TCP communication, the execution efficiency of the software is measured by the efficiency of A, B, and the overall network, the network is the slowest point. The network delay time is limited by the existing physical level and cannot be solved. In program development, the fewer network transmission times, the better, the less time the network latency is. In fact, the purpose of TCP three-way ha