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WSASetLastError function

The WSASetLastError function sets the error code that can be retrieved through the WSAGetLastError function.

Syntax

C++


void WSASetLastError(
  _In_  int iError
);

Parameters

iError [in]: Integer that specifies the error code to be returned by a subsequent WSAGetLastError call.

Return value

This function generates no return values.

Error code	Meaning
WSANOTINITIALISED	A successful WSAStartup call must occur before using this function.

Remarks

The WSASetLastError function allows an application to set the error code to be returned by a subsequent WSAGetLastError call for the current thread. Note that any subsequent Windows Sockets routine called by the application will override the error code as set by this routine.

The error code set by WSASetLastError is different from the error code reset by calling the function getsockopt with SO_ERROR.

The Windows Sockets error codes used by this function are listed under Windows Sockets Error Codes.

Windows Phone 8: This API is supported.

Requirements

Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Winsock2.h
Library	Ws2_32.lib
DLL	Ws2_32.dll