winsock dll

When I was a beginner in Windows Network Programming, I encountered two types of compilation errors (102 errors are displayed in the build window of vc6), which are some of the undefined types or repeated definitions, I am very depressed. The first error message is: Error 1: mswsock. H (69): Error c2065: 'socket ': Undeclared identifier Error Scenario 2: winsock2.h (99): Error c2011: 'fd _ set': 'struct 'type redefinition Later, I calmed down and analyzed the error prompt and related documents c

Use Pb To write Winsock TCP/IP applicationsAuthor: Unknown Source: moonlight software station time: moonlight software StationHttp://www.it97.cn/Art/Show.asp? Id = 18705Http://www.moon-soft.com/doc/4023.htm The sockets in Pb are provided through the Winsock. PBL library. It encapsulates the data structures and processes used in socket programming and is functionally similar to the

to change the order of the two to solve the problem. For the reason, see the link below. In addition, these problems not only affect files that directly contain the two, but also affect indirect inclusion. For example,. h contains windows. h, B. h contains winsock2.h. h to reference. H and B. h, then the correct order should be B. h prior to. h. Of course, in practice, it is sometimes difficult to find out which two files are in wrong order. The ultimate solution is that in the current project

Visual Basic Winsock Control detailsThe Winsock control can connect to a remote machine through UDP (User Datagram Protocol) or TCP (Data Transmission Protocol) and exchange data. Both protocols can be used to create client and server applications. Like the timer control, the Winsock control does not have a visual interface when running.Possible Use· Create a cli

Program | Design Summary With the rapid development of the Internet, the communication of the network interface enables us to receive all the information that happens all over the place immediately. When we use various browser to browse various outlets, as long as the server can provide chat (chat) service items, we can through browser provided chat program and other users on the network to talk about the exchange of experience. This article designs a chat application with the

WinXPCMD------------->netsh winsock reset=============Related knowledge:The netsh winsock reset command means to reset the Winsock directory. If there is a problem with the Winsock protocol configuration on a machine that will cause problems such as network connectivity, you will need to reset the

　 WinSock programming in VB 　 I. Introduction Socket originally meant "socket", which is used for computer communication to represent a point-to-point information transmission. Early communication programming specifications were used on Unix systems. The communication parties were composed of two "servers" and "customers" representing two points, and information exchange was conducted based on the IP protocol according to the TCP or UDP specifications

, there is no guarantee that the receiving end is listening. Datagram socket transmission efficiency is high. 3. Original socket (Raw-protocol interface) Defined: #define SOCK_RAW 3 The original socket holds the full IP header in the packet, and the previous two sockets receive only user data. Therefore, the data can be analyzed by the original socket. The other two kinds of sockets are not commonly used, here is not introduced. The files required for socket development (take

The following example allows InstallShield to obtain an IP address using Winsock, which saves the following files as Tcpip.rul #define WSADESCRIPTION_LEN 256 #define Wsasys_status_len 128 typedef Wsadata Begin INT wversion; INT whighversion; Char szdescription[wsadescription_len+1]; Char szsystemstatus[wsasys_status_len+1]; Short imaxsockets; Short IMAXUDPDG; Pointer lpvendorinfo; End Wsadata Structwsadata; Wsadata pointer pwsadata; typedef hostent Be

This article is about how to invoke C (c + +)-written DLLs in a C # environment. "Reprint marked the source." First, the preferred creation of a C DLL project, production DLL files used for standby, steps are as follows: 1, VS2010 create C + + Project Select Win32 Application, the name is Createcdll, in the application settings interface to select the DLL, the fo

Socket mode: locked or unlockedSocket I/O model: select)Wsaasyncselect (asynchronous selection)Wsaeventselect (Event Selection)Overlapped I/O (overlapping I/O)Completion port (completion port)I. IntroductionThe emergence of the socket model aims to solve some limitations in the socket mode.All wi n d o w s platforms support socket locking or non-locking. However, not every platform supports each I/O model.Support for socket I/O models by the operating systemPlatformSelectWsaasyncWsaeventselectOv

In the following example, InstallShield can use Winsock to obtain the IP address and save the following files as tcpip. rul # Define wsadescription_len 256 # Define wsasys_status_len 128 Typedef Wsadata Begin Int wversion; Int whighversion; Char szdescription [wsadescription_len + 1]; Char szsystemstatus [wsasys_status_len + 1]; Short imaxsockets; Short imaxudpdg; Pointer lpvendorinfo; End; Wsadata structwsadata; Wsadata pointer pwsadata; Typedef host

# Include # Include # Include { Word wversionrequested; Int err; Wversionrequested = makeword (2, 0); // query Winsock 2.0 Err = wsastartup (wversionrequested, wsadata); // load and initialize Windows Sockets DLL If (Err! = 0 ){ Printf ("no windows socket dynamic library! \ N "); Getch (); Return false; } If (lobyte (wsadata. wversion )! = 2 | hibyte (wsadata. wversion )! = 0 ){ Printf ("Windows Socket 2

Document directory WinSock programming specifications Winsock entertainment Winsock network programming Today, let's talk about Winsock. I also want to talk about Winsock's simplest programming. If you like it, you can pay attention to it. When compiling windows network applications, the most common one is the