When the server closes a connection, if the client sends data. According to the TCP protocol, an rst response is received. When the client sends data to the server, the system sends a sigpipe signal to the process, telling the process that the
2. network socket programming in the embedded operating system uClinuxNetwork socket data transmission is a special type of I/O, and socket is also a file descriptor. Socket also has a function call similar to opening a file. The socket () function
Reprinted: file: // C:/Documents % 20and % 20 settings/Administrator/% E6 % a1 % 8C % E9 % 9d % A2/login
The establishment of a P2P connection through a NAT device is only a little more complex than UDP. The TCP "hitting" is very similar to the UDP "
1. Establish a listener and Connection Service
The code for creating a TCO listener on the server is as follows:
Struct sockaddr_in locaddr; struct socket * sock; struct socket * newsock; int RC; int backlog = 0; int shutdown; char * server_ip = "19
High byte priority and low byte priority. Data on the internet is transmitted over the network in high byte precedence. Therefore, for machines that store data in low byte precedence mode, data transmission over the Internet requires conversion.
The
Send Function
Int send (socket S, const char far * Buf, int Len, int flags );
Both the client and server applications use the send function to send data to one end of the TCP connection.
The client program generally uses the send function to send
The premise is that,
When receiving a receipt or reading data, take two steps.
1. Wait for the data to be ready.
2. Copy data from the kernel to the process.
For a network io (socket) (Here we use read as an example), it involves two system objects,
What is the difference between network byte sequence and machine sequence?
There are two types of byte sequence: nbo and HBO.
Network byte order ):It stores data in a sequence from high to low and uses a unified network byte sequence on the
There are two types of computer data storage priorities: high byte priority and low byte priority. Data on the internet is transmitted over the network in high byte precedence. Therefore, for machines that store data in low byte precedence mode,
Document directory
Ping Command Implementation Program
Ping Running Effect
25.1. Overview
The original set of interfaces provides the following three functions that are not generally provided by TCP and UDP sets of interfaces.1. Use the original
BT source code learning experience (12): client source code analysis (from the beginning to the connection establishment stage) Author: Wolfenstein this time the recovery starts according to the process description, that is, from multitorrent. start_
This article is some of my experiences in MS-windows and HP-UNIX network programming. It is for your reference only. If the socket function mentioned in this article is not specifically described, it refers to the Windows Socket API. 1. The
First of all, you need to download and install the corresponding modules. You can search for them on the internet and install them easily, after installation, the MySQLdb folder under the site-packages folder under the Lib folder under the python
Generally, you only need to use a vro to access the Internet. However, for a qualified network administrator, you must know the working process of the vro, in particular, you need to know how data passes through a vro.
1. When data passes through a
Build mudlib--with Akuma, "first talk."First: Let it run.Note: Every talk I will upload a match lib, some files are old, some are new, I try to write clear notes in Lib. A more detailed description is written in the body of each lecture.What is the
In order for your route to process different types of files, you need to add a line in your route configuration file: connect function definition
Connect ($ route, $ default = array (), $ params = array ())
Returns this object's routes array.
Linux C Programming-Network Programming
Summary
Network programming must be inseparable from a set of interfaces. What is a set of interfaces? In Linux, All I/O operations are generated by reading and writing file descriptors, which are integers
I have forgotten a lot about using ODBC before. I am ready to learn how to use ADO.
ODBC has several ways to access the database.
Create a database and register the data source. You can use API functions to register data sources.
A CDatabase object
QT is a cross-platform C ++ GUI application framework. It provides a rich set of window components and features object-oriented, easy to expand, and true component programming, even more striking is that the most popular KDE Desktop Environment on
Network IPC: socket, network ipcInter-process network communication: socket API Introduction
Processes running on different computers (connected through the network) communicate with each other ).
A process can be uniquely identified by a process
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