| 类 | 说明 | 
|---|---|
| AbstractMessageDecoder | 
 A  
MessageDecoder that decodes message header and forwards
 the decoding of body to a subclass. | 
| AbstractMessageEncoder | 
 A  
MessageEncoder that encodes message header and forwards
 the encoding of body to a subclass. | 
| AddMessageDecoder | 
 A  
MessageDecoder that decodes AddMessage. | 
| AddMessageEncoder | 
 A  
MessageEncoder that encodes AddMessage. | 
| Constants | 
 Provides SumUp protocol constants. 
 | 
| ResultMessageDecoder | 
 A  
MessageDecoder that decodes ResultMessage. | 
| ResultMessageEncoder | 
 A  
MessageEncoder that encodes ResultMessage. | 
| SumUpProtocolCodecFactory | 
 A  
ProtocolCodecFactory that provides a protocol codec for
 SumUp protocol. |