CancelInvocationMessage interface  
A hub message sent to request that a streaming invocation be canceled.
- Extends
 
Properties
| headers | A MessageHeaders dictionary containing headers attached to the message.  | 
| invocation | 
	The invocation ID.  | 
| type | 
Property Details
headers
A MessageHeaders dictionary containing headers attached to the message.
headers?: MessageHeaders
				Property Value
		invocationId
	 
	The invocation ID.
invocationId: string
				Property Value
string