Solve the problem that the UDT memory is not available, and solve the udt memoryWhen a simple network communication program is compiled using the UDT library, a problem is found. After some connections are closed, the memory usage of the program remains unchanged. For example, connect 500 first, then connect to another 500, first turn off the next 500, the progra
Over the past two years, we have chosen the UDT protocol for data transmission because we wanted to choose a protocol that combines the reliability of the TCP protocol and the efficiency of the UDP protocol. We have also studied and practiced it for a while. However, in the end, it was abandoned because it was not suitable for our business scenarios. However, I was deeply impressed by its implementation principle, code implementation, and excellent ap
Over the past two years, we have chosen the UDT protocol for data transmission because we wanted to choose a protocol that combines the reliability of the TCP protocol and the efficiency of the UDP protocol. We have also studied and practiced it for a while. However, in the end, it was abandoned because it was not suitable for our business scenarios. However, I was deeply impressed by its implementation principle, code implementation, and excellent ap
In the development of video conferencing systems, we must ensure the reliability of audio and video data, because the video conferencing system is a very real-time system, if the network is not good, packet loss, data delay, and data congestion may occur, which may affect data reliability, this results in a reduction in the sound and video quality of the video conferencing system. So how can we implement real-time data, but ensure data reliability? In the previous article "video conferencing tra
Java Implementation of udt and udtjava implementation
What is the udt protocol?
I will not answer the question. I can search for it online. It has always been c ++. the java implementation has not been modified for a long time.
After testing, the java version has some problems and has been fixed and uploaded to csdn.
In addition, the package is further encapsulated based on the actual application;
Beca
In UDT, epoll processes the CLOSE state and udtepollclose state.When epoll_wait () returns the available uid, it obtains the status of the uid, which should have been BROKEN but CLOSED. However, CLOSED events cannot be handled like BROKEN events, and CLOSED events cannot be removed, therefore, epoll_wait continuously returns the uid, resulting in an endless loop. Trace the code to the underlying layer to find the cause. Int CUDTUnited: epoll_remove_us
We are very familiar with UDP. Here we will introduce the UDT protocol. The two protocols are easy to confuse in terms of abbreviations. You must first distinguish them clearly. Next, let's compare and differentiate this part of content.
1. Introduction
With the increase of network bandwidth latency products (BDP), the TCP protocol is usually becoming inefficient. This is because its AIMDadditive increase multiplicative decrease) algorithm completely
The overall structure of the UDT The UDT socket is the core of the UDT, and it is also a bridge that connects the user application of the UDT with the internal implementation part to the management of the data structure, and the transmission of the network. The application either puts the data in the send buffer to be
IBM 3624 Customer pin,natural pin,pin offset related contentThe following describes how to generate a K-bit user pin using IBM 36241. Use the PIN verification Key (PVK) to encrypt the pan (Primary account number) to the right 16 bits, resulting in a 16-bit hexadecimal string
Tags: inserting data developer blog characters src HTML IDE sel env1. Oracle Data typeOracle's data types are as follows String type char nchar varchar2 NVARCHAR2 numeric type int number integer smallint Day Type Date Timestamp Custom type Create type Here the UDT represents the Oracle custom type, the syntax is as follows CREATE type xxx As Object (field 1 type 1, field 2 Type 2, ...); A custom type was created as follows Addr_type The type can be a
ANSI X9.8 Standard pin xor pan get pin BlOCKBefore I saw a few introductions, the ANSI is said to be 16 bytes, really rip, all kinds of fraught, the real ANSI algorithm is actually 8 bytes, the specific format is as follows:(1) ANSI X9.8 Format(without master account information)PIN (Personal identification number Personal Identity number) has a total of 8 byte l
My motherboard is a 24PIN power interface, the power is 20PIN interface, compared, the more out of the interface is (+12V, +5v) and (+3.3v, GND) Two groups, now the motherboard only one +3.3v output used in the SATA power sockets, Want to use a large 4-pin socket to transfer into the 4-pin motherboard power connector, but the big 4PIN socket is (+12v, +5v, GND, GND), with one of the GND output instead of +3
Fixed navigation when jQuery. Pin is used for vertical scrolling. jquery. pin navigation
ZKEACMS navigation cannot be fixed by default, and the page is scrolled. To have a better user experience, you can pin the navigation to the top when the page is scrolling down, this makes it easy for users to click.
JQuery Pin
Maxcompute is a chip that converts the rs232 signal level (-10, + 10 v) of a computer serial port to the TTL signal point (0, + 5) used by a single-chip microcomputer, the price of this chip is about 6 yuan. Next I will introduce the maxcompute pin diagram, the connection circuit between maxcompute and the computer serial port, and the RS232 pin definition. ************************ * ** Maxcompute chip is t
Use linux shell to automatically pin and linux shell to pin
If I post a post on the Forum to ask something, once the post fails, it will sink in seconds, but I really don't want to go to the top all the time. What should I do? The following shows how to use shell crontab to implement automatic top-up.
I will not talk much about it. Take Douban as an example --1:Use chrome to open the Douban webpage: 2:Ri
Connection Methods for serial communication: 9-pin/25-pin
Basic connection method for Serial Communication
Currently, the commonly used serial ports include 9-pin serial ports (DB9) and 25-pin serial ports (DB25). When the communication distance is close (
2. RS232C Serial Communication Connection method (three-
1. Under the Metro interface, press the keyboard "WIN" + "C" key combination to run the Super button.2. In the Super button, select "Settings". 3. Click "Change computer Settings" below. 4. In Computer settings, select Users. 5. In the "Login Options", click "Change Pin". 6. According to the prompts to the current use of the password input, and then click on the bottom right of "OK." 7. Finally, the new 4-digit password input, click the bottom of the
WIN10 Unable to use PIN login, WIN10 PIN code login failure to do,WIN10 PIN code is not a workaround,pin password is a new sign-in authentication method from the beginning of Win8 windows, Microsoft is also highly recommended a way to login. During the installation of WIN10, Microsoft will prompt the user that the trad
Tags:. NET white log ack BSP Ace RS232 pin Postwhat you see. DB9 pin-type RS485 output signal and terminal pin assignment . This DB9 needle type differs from the standard RS232 or RS485 DB9 definition, and the DB9 pin type description is only for USB to 485DB9 interfaces.Watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqv/fo
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