An example illustrating this is shown below. From the server form you can start pre-defined. Note that when the value of Protocol is 0, the created protocol is TCP. The protocol to be set in Winsock control is set through Protocol, such as sock. It should set what protocol you create step by step. On project start, an instance of the component listens on port 22222 (can be changed in code). Winsock created in VBS can’t set parameters just like the graphical interface in VB. Server would echo a client request prefixed by 'you sent ' (echo server). Example demonstrates using the component in client-server scenario. The WIN32_LEAN_AND_MEAN macro prevents the Winsock.h from being included by the Windows.h header. VB6 CLient-Server example for OstroSoft Winsock Component.
#Vb6 winsock udp windows#
The declarations in the Winsock.h header file will conflict with the declarations in the Winsock2.h header file required by Windows Sockets 2.0. For historical reasons, the Windows.h header defaults to including the Winsock.h header file for Windows Sockets 1.1. If an #include line is needed for the Windows.h header file, this should be preceded with the #define WIN32_LEAN_AND_MEAN macro. The Winsock2.h header file internally includes core elements from the Windows.h header file, so there is not usually an #include line for the Windows.h header file in Winsock applications. The client and server application that is used for illustration is a very basic client and server. It is designed to provide an understanding of basic Winsock functions and data structures, and how they work together. This is the snippet Two-Way TCP/IP File Transfer via Winsock on FreeVBCode. When the Iphlpapi.h header file is required, the #include line for the Winsock2.h header file should be placed before the #include line for the Iphlpapi.h header file. Winsock API WSAStartupWinsock WSAStartupDeclare Function WSAStartup Lib 'ws232. The following is a step-by-step guide to getting started with Windows Sockets programming. The Iphlpapi.h header file is required if an application is using the IP Helper APIs.