waves maxxaudio

As we all know, TCP requires three handshakes to establish a connection, but the disconnection requires four waves. Why do we need four waves and so many wait states, such as Wait1 and wait2, this is because when establishing a connection, both the sending and receiving sides are "pure". When the client sends SYN, the server does not have any data to send, but only needs to send a synack, therefore, the han

Tags: Internet applications, IP protocol, computer internet Wireshark packet capture illustration TCP three-way handshake/four waves details 1. The link layer, also known as the data link layer or network interface layer, usually includes the device driver in the operating system and the network interface card corresponding to the computer. They work together with the physical interface details of the cable (or any other transmission medium. 2. The

by step 2 and step 3 are from the end of the passive shutdown and may be merged into a sub-section. [2] (2) Between step 2 and step 3, from the execution of the passive closed end to the execution of the active closed one end of the flow of data is possible, this is called "semi-closed" (half-close). (3) When a UNIX process terminates either voluntarily (calling exit or returning from the main function) or involuntarily (receiving a signal terminating the process), all open descriptors are clos

"Three handshakes and four waves of the HTTP protocol":Three-time handshake: First handshake: When a connection is established, the client sends a SYN packet (SYN=J) to the server and enters the Syn_send state, waiting for the server to confirm; Second handshake: The server receives the SYN packet, it must confirm the customer's SYN (ACK=J+1), and also send itself a SYN packet (syn=k), that is, the Syn+ack packet, when the server enters the SYN_

Times in the development, technology is ever-changing!background-based template language, always put the "front" in a "secondary" position, it has been in order to do the "main" and struggle ...With the development of the web, JS is stable and popular, and finally the template language based on JS appears.For example, simple refining of the underscore Template,mustache, support for custom label handlebars and so on.JS-based template can be more granular definition, run based on JS, the relevant

Eclipse appears with red strip and red exclamation marks, eclipse Waves I have been using eclipse to write Python, and I always see some strings with red wavy lines, It looks uncomfortable. It was finally eliminated after a long time. It turned out to be a spelling check. Windows> Preferences> General> Editors> Text Editors> Spelling can cancel Enable spell checking. There is also a yellow exclamation point prompt Window> Preferences> General>

, normative system and procedures, enterprises like an efficient operation of the machine, departmental functions, job responsibilities, code of conduct, operational procedures to achieve programmatic, information transmission, the work to achieve the program, talent, capital, materials, time and other resources to achieve scientific use, These enterprises have entered the stage of scientific management, while some multinational companies and a few excellent enterprises in the establishment of s

Marker Indicator 76 page from the description of multiple occurrences of shift-to-right, refers to the 1th wave rebound in the process of forming a 2th wave (not confirmed 1th wave), can not complete the 2th wave initialization conditions, the formation of 8 lower than the previous closing price of K line, and then directly to the bottom of the rebound, at this time, Cancels the non-formed 2th wave, and does not think that the 1th wave is formed, and the wave shifts right to the current highest

".First wave: The active shutdown sends a FIN, which is used to close the active side to the passive closed side of the data transfer, that is, the active shutdown to tell the passive shut-off party: I will no longer send you the data (of course, the data sent before the FIN packet, if not received the corresponding ACK acknowledgement message, The active shutdown will still re-send the data), but the active shut-off party can also accept the data at this time.Second wave: The passive closing pa

TIME_WAIT state, if the last ACK sent by the TCP client is lost, it is re-sent. The time required in the TIME_WAIT state is dependent on the implementation method. Typical values are 30 seconds, 1 minutes, and 2 minutes. The connection is formally closed after waiting, and all resources (including the port number) are released. "Question 1" Why is the handshake three times when it is connected and four times when it is closed?A: The syn+ack message can be sent directly after the server receives

" in the time_wait state, if the last ACK sent by the TCP client is lost, it will be re-sent. The time required in the TIME_WAIT state is dependent on the implementation method. Typical values are 30 seconds, 1 minutes, and 2 minutes. The connection is formally closed after waiting, and all resources (including the port number) are released."Question 1" Why is the handshake three times when it is connected and four times when it is closed? A: The syn+ack message can be sent directly after the se

need to go through 2MSL (maximum message segment lifetime) to return to the close state? This is because although both sides agreed to close the connection, and I received the four messages are also coordinated and sent, can be directly back to the closed state (like from the Syn_send state to establish state); but because we have to assume that the network is unreliable, You cannot guarantee that the last ACK message you send will be received by the other side, so the other side in

lost, it will be re-sent. The time required in the TIME_WAIT state is dependent on the implementation method. Typical values are 30 seconds, 1 minutes, and 2 minutes. The connection is formally closed after waiting, and all resources (including the port number) are released."Question 1" Why is the handshake three times when it is connected and four times when it is closed?A: The syn+ack message can be sent directly after the server receives the SYN connection request message from the client sid

message I received." I can't send fin messages until all the messages on my server end are sent, so I can't send them together. Therefore, four-step handshake is required.Why does the time_wait state need to go through 2MSL (maximum message segment lifetime) to return to the close state?A: Although according to reason, four messages are sent, we can go directly to the close state, but we must pretend that the network is unreliable, there can be a last ACK lost. So the TIME_WAIT state is used to

, you may also need to send some data to the other side, Send the FIN message to the other side to show that you agree that you can now close the connection, so it is here that the ACK message and fin messages are sent separately in most cases.2, why time_wait state also need to wait 2MSL to return to closed status?This is because: although both sides agree to close the connection, and the handshake of the 4 messages are also coordinated and sent, can be directly back to the closed state (like f

request is issued. A confirmation message section is sent to a, agreeing to establish a connection. Assuming a three-time handshake is not used, the new connection is established as soon as B confirms.Because a does not make a connection request now, it does not respond to the acknowledgment of B, nor does it send data to B. But B thought the new transport connection had been established and was waiting for a to send the data. Many of the resources of B have been wasted in vain.The use of three

unconsciously standing on the waves of the technological revolution. Over the past decade, they have represented the wave of Science and Technology until the next wave came ". Dozens of companies listed in the book, such as ATT IBM, apple, Intel, Microsoft, Cisco, Yahoo, and Google all represent the peaks of the times. They are the buzz of the times, and we may sigh, in that lucky age, they caught a certain detail, and then a group of young people st

[Programming Basics] three handshakes and four waves in the TCP protocol (illustration), programming basics tcp TCP establishment requires three handshakes to be established, and disconnection requires four handshakes. The entire process is shown in: Let's take a look at how to establish a connection. First, the Client sends a connection request message. The Server segment replies to the ACK packet after accepting the connection and allocates resour

Void timer0_isr (void) interrupt 1 using 1{Static unsigned char I; // returns the value of 12 m for Crystal Oscillator computation. The instruction period is 1 US, 500x2 = 1 ms square wave.Th0 = (65536-500)/256;Tl0 = (65536-500) % 256;I ++;P0 = I; // The P0 port outputs 8 different frequencies, which is equivalent to a divider and is frequently used as an indication wave.// Device measurement, which can be directly observed by led at low frequency// P0.0 outputs 1 ms square wave, p0.1 outputs 2

January 26 Question list Source Knowledge points Completion Time A 1275 Abacus Test Noip popularity group 2014 Violent ??? 2018.11.2 B C 1277 spiral Matrix Thinking ??? 2018.11.2 D E F 1208 expression evaluation (after-game question completion) Violent ??? 2018.11.2