WebhostUnregisterProtocol Function

Requests that a protocol be unregistered when a listener adapter is shutting down.

Syntax

HRESULT WebhostUnregisterProtocol(  
   IN DWORD ProtocolHandle  
);  

Parameters

ProtocolHandle
[IN] A DWORD that represents the protocol to be unregistered.

Return Value

An HRESULT. Possible values include, but are not limited to, those in the following table.

Value	Definition
S_OK	Indicates that the operation was successful.
HRESULT_FROM_WIN32( ERROR_ALREADY_EXISTS )	Indicates that there is already a listener adapter registered in this process for this protocol.
HRESULT_FROM_WIN32( ERROR_NOT_FOUND )	Indicates that the protocol was not found.

Remarks

Before calling this function, the listener adaptor should perform the following tasks:

1. Request all listener channels to stop (by calling the WebhostCloseAllListenerChannelInstances function).

2. Wait for the Windows Process Activation Service notification from the PFN_WEBHOST_LISTENER_APPLICATION_POOL_ALL_LISTENER_CHANNEL_INSTANCES_STOPPED callback function. This callback confirms that all the listener channel instances have stopped.

Requirements

Type	Description
Client	- IIS 7.0 on Windows Vista - IIS 7.5 on Windows 7 - IIS 8.0 on Windows 8 - IIS 10.0 on Windows 10
Server	- IIS 7.0 on Windows Server 2008 - IIS 7.5 on Windows Server 2008 R2 - IIS 8.0 on Windows Server 2012 - IIS 8.5 on Windows Server 2012 R2 - IIS 10.0 on Windows Server 2016
Product	- IIS 7.0, IIS 7.5, IIS 8.0, IIS 8.5, IIS 10.0 - IIS Express 7.5, IIS Express 8.0, IIS Express 10.0
Header	Listeneradapter.h

See Also

Listener Adapter Exported Functions