A sample Diameter base Device Watchdog Answer(DWA) wireshark capture which may help Diameter base protocol beginners.
Diameter Protocol
Version: 0x01
Length: 64
Flags: 0x00
0... .... = Request: Not set
.0.. .... = Proxyable: Not set
..0. .... = Error: Not set
...0 .... = T(Potentially re-transmitted message): Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
Command Code: 280 Device-Watchdog
ApplicationId: Diameter Common Messages (0)
Hop-by-Hop Identifier: 0x00000198
End-to-End Identifier: 0x00000198
AVP: Result-Code(268) l=12 f=-M- val=DIAMETER_SUCCESS (2001)
AVP Code: 268 Result-Code
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 12
Result-Code: DIAMETER_SUCCESS (2001)
AVP: Origin-Host(264) l=15 f=-M- val=shareo1
AVP Code: 264 Origin-Host
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 15
Origin-Host: shareo1
Padding: 00
AVP: Origin-Realm(296) l=15 f=-M- val=shareo1
AVP Code: 296 Origin-Realm
AVP Flags: 0x40
0... .... = Vendor-Specific: Not set
.1.. .... = Mandatory: Set
..0. .... = Protected: Not set
...0 .... = Reserved: Not set
.... 0... = Reserved: Not set
.... .0.. = Reserved: Not set
.... ..0. = Reserved: Not set
.... ...0 = Reserved: Not set
AVP Length: 15
Origin-Realm: shareo1
Padding: 00