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WSAStartup initiates the use of RT-TCP/IP by an RTSS process.
Syntax
int WSAStartup( __in WORD wVersionRequested, __out LPWSADATA lpWSAData );
Parameters
wVersionRequested
The highest version of WinSock support that the caller can use. The high order byte specifies the minor version (revision) number; the low-order byte specifies the major version number.
lpWSAData
A pointer to the WSADATA data structure that is to receive details of the WinSock implementation.
Return Values
0 (zero) if the function succeeds
One of these error codes if the function fails:
|
Error Code |
Description |
|
WSAEFAULT |
The lpWSAData parameter is an invalid pointer. |
|
WSAVERNOTSUPPORTED |
The version of WinSock support requested is not provided by this particular WinSock implementation. |
|
WSASYSNOTREADY |
Network subsystem is not ready for network communications. |
Remarks
The WSAStartup function should only be called once within an RTSS process.
Requirements
| Library | Rtxtcpip.lib |