JdkApplicationProtocolNegotiator.ProtocolSelectionListener (Netty API Reference (5.0.0.Alpha4))

Enclosing interface:

JdkApplicationProtocolNegotiator
```
public static interface JdkApplicationProtocolNegotiator.ProtocolSelectionListener
```
A listener to be notified by which protocol was select by its peer. Either the unsupported() OR the selected(String) method will be called for each SSL handshake.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`selected(String protocol)`	Callback invoked to let this application know the protocol chosen by the peer.
`void`	`unsupported()`	Callback invoked to let the application know that the peer does not support this `ApplicationProtocolNegotiator`.

- Method Detail
  - unsupported
```
void unsupported()
```
    Callback invoked to let the application know that the peer does not support this ApplicationProtocolNegotiator.
  - selected
```
void selected(String protocol)
       throws Exception
```
    Callback invoked to let this application know the protocol chosen by the peer.
    
    Parameters:
    
    protocol - the protocol selected by the peer. May be null or empty as supported by the application negotiation protocol.
    
    Throws:
    
    Exception - This may be thrown if the selected protocol is not acceptable and the desired behavior is to fail the handshake with a fatal alert.