Calculates additional header fields for the outgoing SIP message.

C# | Visual Basic | Visual C++ |
IEnumerable<PreparedExtensionHeader> PrepareAdditionalHeaders( MessageModifierInfo outgoingMessageInfo )
Function PrepareAdditionalHeaders ( outgoingMessageInfo As MessageModifierInfo ) As IEnumerable(Of PreparedExtensionHeader)
IEnumerable<PreparedExtensionHeader^>^ PrepareAdditionalHeaders( MessageModifierInfo^ outgoingMessageInfo )

- outgoingMessageInfo (MessageModifierInfo)
- The text representation of outgoing SIP message.

IEnumerable<(Of <(<'PreparedExtensionHeader>)>)>
Nonempty list of extra header field, otherwise null.
Nonempty list of extra header field, otherwise null.
Assembly: VoIPSDK (Module: VoIPSDK.dll) Version: 11.2.4.290