Refers an URI to the remote participant. Namespace: Microsoft.Rtc.Signaling
Assembly: Microsoft.Rtc.Collaboration (in microsoft.rtc.collaboration.dll)

Syntax

Exceptions

Exception type Condition
ArgumentNullException

Thrown when arguments are null.

ArgumentException

Thrown when invalid arguments are passed.

InvalidOperationException

Thrown when the session is an invalid state to send a Refer.

Remarks

The platform supports multiple Refer operations at the same time. Some clients may not support parallel Refer operations. Until the first notification is received, the capability of the remote client is not known. For this reason, the first Refer operation is special in the sense the subsequent Refer operations are queued until first notify is received to learn the capability of the remote client. If the remote supports parallel Refer operations, the queued Refer operations are all released. If the remote does not support parallel Refer operations, the Refer operations are carried out one at a time. When the terminating notify is received, the next Refer operation is started. For this reason, calling synchronous method to send Refer or waiting on the operation to complete (EndRefer) before the callback is called are highly discouraged.


Thread Safety

All public static (Shared in Visual Basic) members of this type are thread-safe. Instance members are not guaranteed to be thread-safe.

Platforms

Development Platforms

Windows XP Professional with Service Pack 2 (SP2), Windows Server 2003, Windows Vista Ultimate Edition, Windows Vista Business Edition, Windows Vista Enterprise Edition

Target Platforms

See Also