libupnp/docs/dist/html/upnp/UpnpUnSubscribeAsync.html
2006-07-06 12:37:29 +00:00

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<H2>EXPORT_SPEC int <A HREF="#DOC.DOCU">UpnpUnSubscribeAsync</A></H2><H2>( IN <!1><A HREF="UpnpClient_Handle.html">UpnpClient_Handle</A> Hnd,<BR>&nbsp; IN Upnp_SID SubsId,<BR>&nbsp; IN Upnp_FunPtr Fun,<BR>&nbsp; IN const void* Cookie )</H2><BLOCKQUOTE><B>UpnpUnSubscribeAsync</B> removes a subscription of a control point from a service previously subscribed to using <B>UpnpSubscribe</B> or <B>UpnpSubscribeAsync</B>, generating a callback when the operation is complete.</BLOCKQUOTE>
<A NAME="DOC.DOCU"></A>
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<H2>Documentation</H2>
<BLOCKQUOTE><B>UpnpUnSubscribeAsync</B> removes a subscription of a control
point from a service previously subscribed to using <B>
UpnpSubscribe</B> or <B>UpnpSubscribeAsync</B>, generating a callback
when the operation is complete.
<P>Note that many of the error codes for this function are returned in
the <B>Upnp_Event_Subscribe</B> structure. In those cases, the function
returns <TT>UPNP_E_SUCCESS</TT> and the appropriate error code will
be in the <B>Upnp_Event_Subscribe.ErrCode</B> field in the <B>Event</B>
structure passed to the callback.
<P></BLOCKQUOTE>
<DL><DT><DT><B>Parameters:</B><DD><B>Hnd</B> - The handle of the subscribed control
point.
<BR><B>SubsId</B> - The ID returned when the
control point subscribed to the service.
<BR><B>Fun</B> - Pointer to a callback function to be
called when the operation is complete.
<BR><B>Cookie</B> - Pointer to user data to pass to the
callback function when invoked. <BR><DT><B>Returns:</B><DD> [int] An integer representing one of the following:
<UL>
<LI> <TT>UPNP_E_SUCCESS</TT>: The operation completed successfully.
<LI> <TT>UPNP_E_INVALID_HANDLE</TT>: The handle is not a valid control
point handle.
<LI> <TT>UPNP_E_INVALID_SID</TT>: The <B>SubsId</B> is not a valid SID.
<LI> <TT>UPNP_E_INVALID_PARAM</TT>: <B>Fun</B> is not a valid callback
function pointer.
<LI> <TT>UPNP_E_OUTOF_MEMORY</TT>: Insufficient resources exist to
complete this operation.
<LI> <TT>UPNP_E_NETWORK_ERROR</TT>: A network error occured (returned in
the <B>Upnp_Event_Subscribe.ErrCode</B> field as part of the
callback).
<LI> <TT>UPNP_E_SOCKET_WRITE</TT>: An error or timeout occurred writing
to a socket (returned in the <B>
Upnp_Event_Subscribe.ErrCode</B> field as part of the callback).
<LI> <TT>UPNP_E_SOCKET_READ</TT>: An error or timeout occurred reading
from a socket (returned in the
<B>Upnp_Event_Subscribe.ErrCode</B> field as part of the
callback).
<LI> <TT>UPNP_E_SOCKET_BIND</TT>: An error occurred binding the socket
(returned in the <B>Upnp_Event_Subscribe.ErrCode</B> field as
part of the callback).
<LI> <TT>UPNP_E_SOCKET_CONNECT</TT>: An error occurred connecting to
<B>PublisherUrl</B> (returned in the <B>
Upnp_Event_Subscribe.ErrCode</B> field as part of the callback).
<LI> <TT>UPNP_E_OUTOF_SOCKET</TT>: An error occurred creating a socket (
returned in the <B>Upnp_Event_Subscribe.ErrCode</B> field as
part of the callback).
<LI> <TT>UPNP_E_BAD_RESPONSE</TT>: An error occurred in response from
the publisher (returned in the <B>
Upnp_Event_Subscribe.ErrCode</B> field as part of the callback).
<LI> <TT>UPNP_E_UNSUBSCRIBE_UNACCEPTED</TT>: The publisher refused
the subscription request (returned in the <B>
Upnp_Event_Subscribe.ErrCode</B> field as part of the callback).
</UL>
<BR><DD></DL><P><P><I><A HREF="index.html">Alphabetic index</A></I></P><HR>
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