MessageEventListener (Tyrus 2.1.0 API)

```
@Beta
public interface MessageEventListener
```
Listens for message-level events that are interesting for monitoring.

Author:

Petr Janouch

Field Summary

Fields
Modifier and Type Field Description

static MessageEventListener NO_OP
An instance of @MessageEventListener that does not do anything.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onFrameReceived(TyrusFrame.FrameType frameType, long payloadLength)`	Called when a frame has been received.
`void`	`onFrameSent(TyrusFrame.FrameType frameType, long payloadLength)`	Called when a frame has been sent.

- Field Detail
  - NO_OP
```
static final MessageEventListener NO_OP
```
    An instance of @MessageEventListener that does not do anything.
- Method Detail
  - onFrameSent
```
void onFrameSent(TyrusFrame.FrameType frameType,
                 long payloadLength)
```
    Called when a frame has been sent.
    
    Parameters:
    
    frameType - type of the frame.
    
    payloadLength - length of the frame payload.
  - onFrameReceived
```
void onFrameReceived(TyrusFrame.FrameType frameType,
                     long payloadLength)
```
    Called when a frame has been received.
    
    Parameters:
    
    frameType - type of the frame.
    
    payloadLength - length of the frame payload.