| Class | Description | 
|---|---|
| ErrorResponse | 
ErrorResponse messages are sent by the DXL fabric itself or service instances upon receiving
 Request messages. | 
| Event | 
 Event messages are sent using the  
DxlClient.sendEvent(com.opendxl.client.message.Event) method of a client instance. | 
| Message | 
 The base class for the different Data Exchange Layer (DXL) message types. 
 | 
| Request | 
 A  
Request messages are sent using the DxlClient.syncRequest(com.opendxl.client.message.Request) and DxlClient.asyncRequest(com.opendxl.client.message.Request, com.opendxl.client.callback.ResponseCallback, long)
 methods of a client instance. | 
| Response | 
| Enum | Description | 
|---|---|
| DxlErrorMessageEnum | 
 Enumeration of DXL error messages 
 |