WPUQuerySocketHandleContext function (ws2spi.h)

The WPUQuerySocketHandleContext function queries the context value associated with the specified socket handle.

Syntax

int WPUQuerySocketHandleContext(
  [in]  SOCKET     s,
  [out] PDWORD_PTR lpContext,
  [out] LPINT      lpErrno
);

Parameters

[in] s

Description that identifies the socket whose context is to be queried.

[out] lpContext

Pointer that will receive the context value.

[out] lpErrno

Pointer to the error code.

Return value

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

Remarks

The WPUQuerySocketHandleContext 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.

Only non-IFS providers use this function, because IFS providers are not able to supply a context value.

Requirements

See also

WPUCreateSocketHandle