request_subscription_async
Description:
[ Version ( since = "0.15.5" ) ]
public async bool request_subscription_async (string message) throws Error
public async bool request_subscription_async (string message) throws Error
Convenience wrapper for request_subscription_async on a single contact.
Parameters:
| this |
a Contact |
| message |
an optional message |
| callback |
a callback to call when the operation finishes |
| user_data |
data to pass to |