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WPUQuerySocketHandleContext (Windows Embedded CE 6.0)

1/6/2010

This function queries the context value associated with the specified socket handle.

Syntax

int WPUQuerySocketHandleContext(
  SOCKET s,
  PDWORD_PTR lpContext,
  LPINT lpErrno 
);

Parameters

  • s
    [in] Description identifying the socket whose context is to be queried.
  • lpContext
    [out] Pointer that will receive the context value.
  • lpErrno
    [out] Pointer to the error code.

Return Value

If no error occurs, this function returns zero and stores the current context value in lpContext. Otherwise, it returns SOCKET_ERROR, and a specific error code is available in lpErrno.

The following table shows the possible error code.

Error value Description

WSAENOTSOCK

Descriptor is not a socket created by WPUCreateSocketHandle.

Remarks

This function queries the current context value associated with the specified socket handle. Service providers typically use this function to retrieve a pointer to provider-specific data associated with the socket. For example, a service provider can use the socket context to store a pointer to a structure containing the socket's state, local and remote transport addresses, and event objects for signaling network events.

This function is only used by non-IFS providers because IFS providers are not able to supply a context value.

Requirements

Header ws2spi.h
Library Ws2.lib
Windows Embedded CE Windows CE .NET 4.0 and later

See Also

Reference

Winsock SPI Functions
WPUCreateSocketHandle