What every programmer needs to know about game networking
January 24, 2010
Introduction
You ' re a programmer. Have you ever wondered how multiplayer games work?
From the outside it seems magical:two or more players sharing a consistent experience across the network like they Ly exist together in the same virtual world. But as programmers we know the truth of what is actually going on underneath are quite different from what It turns out that it's all a illusion. A massive sleight-of-hand. What
, after receiving XoffChar stop sending receive XonChar will restart Xon/xoff out flow control
Public Finx as Integer '//True, when the receive buffer receives the Xofflim that represents the buffer full, XoffChar sends out the receive buffer to receive the Xonlim that represents the buffer empty, XonChar sends out Xon/xoff in Flow control
Public Ferrorchar as Integer '//The value is True and Fparity is true, the character specified by the ErrorChar member is substituted for the receive characte
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Install tokyocabinet
./Configure -- prefix =/usr/local/tokyocabinet -- enable-off64
Make make install
Install tokyotyrant
./Configure -- prefix =/usr/local/tokyotryrant -- with-tc =/usr/local/tokyocabinet/
Make make install
Verify installation:Run: #./ttservctl start in the tokyotyrant-1.1.41# Telnet 127.0.0.1 1978 the default port is 1978. You can change the configuration in ttservctl.[Ttserver] # curl-x put http: // 127.0.0.1: 1978/sky_key-d "sky"Cr
Packet sending process:
Upper-layer objects (such as data queues) Call Recv ();
Recv () calls send ();
Send () encapsulate the data packet by calling senddata (P) and assign P to pkttx _. Because you need to send the RTS packet before sending the data packet, send () also calls sendrts () generates an RTS packet for packet P and assigns the generated RTS pack
(DCB );
If (! Buildcommdcb ("9600, N,", DCB ))...... // Parameter configuration error
Else ...... // Ready
Use the setcommstate function to manually set the initial value of DCB:
DCB;
Memset ( DCB, 0, sizeof (DCB ));
If (! Getcommstate (hcomm, DCB) return false;
DCB. baudrate = cbr_9600;
3.Traffic Control Device
The following two settings are available for throttling:
Hardware traffic control: There are two types of hardware traffic control: DTE/DSR mode and
Solution to LINUX serial port programming
Articles on Serial Port Programming in Linux are everywhere on the Internet, but most of them are from one article, and they all write some basic operations, such as controlling the Serial Port Pin status such as the RTS/CTS, the receipt and sending of binary data are not well described. I encountered some problems during use and wrote them out. I hope they will help you and avoid detours!
The operating system
rate. During transmission, the receiver finds that the input buffer is full because the CPU is busy with other work. To temporarily stop transmission, the receiver sends XOFF. The typical value is decimal 19, that is, hexadecimal 13, until the input buffer is empty. Once the receiver is ready to receive the message, it sends XON, the typical value is decimal 17, that is, hexadecimal 11, continue communication. When the input buffer is half full, LabWindows sends XOFF. In addition, if the XOFF t
The serial port under the SECURECRT cannot be entered
ProblemWith SECURECRT built a serial port COM1, after connecting the development Board, you can correctly accept and display the output of the serial port, but the key input is not valid.WaySession Options-Connection-Serial, Flow Control, the original default selected Rts/cts canceled, and then reconnect to the Development Board, once again connected, you can enter from the keyboard at
Systems (distribution System): logical components belonging to 802.11 that are responsible for forwarding frames to the destination. A distributed system is a backbone network that forwards frames between access points, so it is often referred to as a backbone (backbone network).The RTS frame itself has two purposes: to reserve the right to use the wireless link and to remain silent on other workstations that require this frame to be received. Once t
Wince debugging RS485 serial port sense (Serial library implementation of the source program in: http://download.csdn.net/detail/dijkstar/4072407 download, 2012-02-16 add; use Microsoft serial control MSComm Implementation of the source program in: http://download.csdn.net/detail/dijkstar/4199667download, 2012-04-04add) this article continues with "RS485 half duplex software programming implementation. As mentioned above, RS485 is a half-duplex protocol. Some Industrial Control motherboard manuf
In serial communication processing, we often see two options, namely, RTS/CTS and Xon/xoff. These are two traffic control options. Currently, traffic control is mainly used in modem data communication, however, it is advantageous to know more about General RS232 programming. So what is the role of Stream Control in serial communication and how to apply it in the preparation of serial communication programs? Here we will talk about this issue.
1. Role
any transit. This network topology model is common in many RTS games, and even the first model that many programmers think of when they think about the web is this model, because this model is really similar to the model that we normally communicate with human beings. by RelliktThe basic idea of this model is to abstract the game into a round round, convert all the inputs into one instruction per turn, and then process the instructions at the beginni
Due to the fact that wireless LAN transmission media (microwave and infrared) are not "Limited" wired, there are some new technical difficulties objectively. For this reason, the Protocol sets out some crucial technical mechanisms, for example, CSM/CA and RTS/CTS.1. CSMA/CA protocol we know that the standard protocol for a bus LAN on the MAC layer is CSMA/CD, that is, the carrier listens for Multi-Point Access/conflict detection (carriersensemultiplea
Flash file system implementation principleHttp://www.dpj.com.cn/web site
Abstract: In the in-depth analysis, Ti provides the RTS for DSP development. lib (RTS. SRC is the source code), this paper introduces the operation methods for custom files and devices, designs a simple FLASH file system
It facilitates application programming.
Keywords: dsp cc/CCS flash File System
1 Overview
Some data files are often
Linux Command set Wireless connection use iwconfig command javasiwconfig wlan0 essid "SPAEK" iwconfig wlan key s: liude0000123 dhclient wlan0 guest iwconfig is one of the User-layer configuration tools of Linux Wireless Extensions (LWE. LWE is a tool for wireless network configuration in Linux, including Kernel support, user-layer Configuration tool, and Driver Interface Support. At present, many wireless network cards support LWE, and mainstream Linux versions, such as Redhat Linux and Ubuntu L
Iwconfig is one of the User-layer configuration tools for Linux wireless extensions (LWE. LWE is a tool for wireless network configuration in Linux, including Kernel support, user-layer Configuration tool, and Driver Interface Support. At present, many wireless network cards support LWE, and mainstream Linux versions, such as RedHat Linux and Ubuntu Linux, have already brought this configuration tool. Usage: iwconfig interface [Essid {NN | on | off}] [nwid {NN | on | off}] [mode {managed | ad-ho
We know that the use of RS-232C protocols is well-developed in some areas of electrical and mechanical, and the basics of this are also described in previous articles. So as a supplement, we next to the RS-232C protocol interface signal to a comprehensive summary. I hope this will help you.
RS-232C protocol standard interface has 25 lines, 4 data lines, 11 control lines, 3 scheduled lines, 7 standby and undefined lines, commonly used only 9, they are
RS-232C protocol interface signal (1)
Contact
to use the Dremel electric grinder to achieve the purpose of the front, so that it can be welded on the back of the PCB board, the workload is still relatively large.Pin descriptionThe previous three useful pins have been obtained, but we have not yet specifically utilized the UART. What needs to be emphasized here is that the UART is one of the asynchronous serial communication protocols, which works by transmitting each character of the transmitted data one after the other. Let's review the U
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