winsock dll

It's not always easy to develop a Web application, but in fact it's just a matter of mastering a few key principles-creating and connecting a socket, trying to connect, and sending and receiving data. The real difficulty is to write a network application that can accept fewer than one, and more than thousands of connections. This article discusses how to develop a highly scalable Winsock application on Windows NT and Windows 2000 through Winsock2. The

UDP-based Winsock programming (C ++) Compared with TCP-based Winsock programming, UDP-based Winsock programming lacks only one step. The Server is missingAccept connection(Accept () function call); for the Client,Request connection(Connect () function call ). In addition, the difference is that in UDP, the data sending and receiving functions are sendto () and re

Recently, the code of the new face detection algorithm always prompts WinSock. h has already been included. Someone has provided a solution and reprinted it to remember it. When you start to use the boost: asio library, the following error occurs during compilation: Fatal error C1189: # error: WinSock. h has already been pinned DED Check the boost code that throws this error. It was originally defined as

Title: design issues when using iocp in a Winsock Server Title: Use iocp to develop some design content for the Winsock server. Address: http://support.microsoft.com/kb/192800 Http://www.libing.net.cn/post/Design-Issues-When-Using-IOCP-in-a-Winsock-Server.php You are welcome to repost it. Please retain the translator.Translator: Hu zhangyou huzhangyouMSN: huzhan

Summary Socket is the basis of communication and the basic interface supporting network protocol data communication.WinsocketProvides some interestingI/OModel to facilitate applicationProgramOne "Asynchronous" method is used to manage the communication on one or more sockets at a time. These models includeSelect(Select ),Wsaasynselect(Asynchronous selection ),Wsaeventselect(Event Selection ),Overlapped I/O(OverlappingI/O) AndCompletion port(Complete port ). ① Select model: The select model

m_hwndFile: // handle of the Main Dialog Box or main window of the applicationIf (wsaasyncselect (serversock, m_hwnd, network_event,Fd_accept | fd_close | fd_read | fd_write) = socket_error){MessageBox ("failed to register Asynchronous Network events! ");Wsacleanup ();Return false;}Listen (serversock, 5); file: // sets the listening modeReturn true;} The following describes the Network Asynchronous Event Callback Function.Void csocketseverdlg: onnetevent (wparam, lparam){File: // call the

Network Asynchronous events for it, in which m_hwndFile: // handle of the Main Dialog Box or main window of the applicationIf (wsaasyncselect (serversock, m_hwnd, network_event,Fd_accept | fd_close | fd_read | fd_write) = socket_error){MessageBox ("failed to register Asynchronous Network events! ");Wsacleanup ();Return false;}Listen (serversock, 5); file: // sets the listening modeReturn true;} The following describes the Network Asynchronous Event Callback Function.Void csocketseverdlg: onnete

Full details of WinSock TCP Error 10053-Wsaeconnaborted: Berkeley description: A connection abort was caused internal to your host machine. The software caused a connection abort because there is no space on the socket's queue and the socket cannot receive further connections. Winsock description: Partly the same as Berkeley. the error can occur when the local network system aborts a connection. this wowou

The UDP-based Winsock programming is only missing a step compared to the TCP-based Winsock programming. For server, the process of accepting connections (accept () function calls) is missing, and for client, the process of requesting a connection (connect () function call) is missing.In addition to the TCP difference, in UDP, the data transceiver function is: SendTo (), and the Recvfrom () function.The func

Winsock is the specification of network programming in Windows-windows Sockets is a widely used and open network programming interface that supports multiple protocols in Windows. WinSock2 is an interface between connecting the system and the software you use, which is probably the function of repairing the correct communication between the software and the system. Winsock How to recover? 1. Can be added

Ninsys74.sys, b674a2d4. EXE, 42ae09e4. dll, msavp. dll, avpdj. dll, avpwl. dll, etc. EndurerOriginal2007-10-121Version At noon yesterday, I helped two netizens clean up computer viruses. Recall one of them first. The netizen's computer is installed with rising 2007 anti-virus software, but it is an expired download ver

UDP can be used in many aspects. So what we will introduce to you today is the process of implementing UDP using the WinSock API. First, let's take a look at the basic definition. User Data Protocol (UDP) is a Protocol used to define computer communication for Packet Exchange in an interconnected network environment. It is one of the widely used communication protocols on the Internet. UDP is directly located at the top layer of the IP protocol and be

The most serious problem is on the invalid_socket, why does this happen? Usually there is no permission, we do not run this thing with administrator privileges, of course, we can return to re-enter or log on to the computer will always use the administrator identity. Of course we can also change this place:This way if you do not run vs with the Administrator, you will be prompted to change, click on the confirmation, a lot of convenience.Of course, the problem is the following: VS2013 socket new

Winsock Transceiver Broadcast PacketThe concept of a broadcast packageBroadcast packets are typically used for two reasons: 11 applications want to find a resource on the local network, and the application has no prior knowledge of the address of the resource.2 Some important features, such as routing requirements, send their information to all the neighboring machines found.The destination address of the broadcast information depends on the network o

You can use the following components to create a query to search for a range of remote Bluetooth devices: WsaquerysetStruct WsalookupservicebeginFunction WsalookupservicenextFunction WsalookupserviceendFunction Note: For clarity, the error handling is ignored. Search and return the remote device address Provides the Winsock version and detailed implementation data to initialize the caller application. You can c

Winsock Study Notes 4: wsaeventselect Model Wsaeventselect is similar to wsaasycnselect. The difference is that when there is an "Event" on the socket, an event is passed instead of a Windows message. Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Unit unit1; Interface UsesWinsock2, windows, messages, sysutils, variants, classes, graphics, controls, forms,Dialogs, stdctrls, extctrls; TypeTwo

Winsock error code listSckOutOfMemory 7 out of memoryThe value of sckInvalidPropertyvalue 380 is invalid.The sckGetNotSupported 394 attribute is not readable.The sckGetNotSupported 383 attribute is read-only.SckBadState 40006 the transaction requested or the error protocol or error connection status of the request itselfThe format of the parameter passed to the function by sckInvalidArg 40014 is unknown or is not within the specified range.SckSuccess