Revision as of 14:34, 2 October 2022

YSF Direct Protocol

The target if this protocol is to allow users to connect their SystemFusion YSF-enabled hotspots and repeaters directly to BrandMeister.

YSF Direct is an extension to existing YSF reflector protocol.

IPv4 only
Standard YSFD and YSFP messages (user has to ping a server)
Additional messages:
- Login messages (YSFL / YSFK) - similar to MMDVM DMR's protocol
- Configuration message (YSFO) - to assign a talk group
- Status messages (YSFACK / YSFNACK)

User -> Server: "YSFL" <10 characters of hotspot/repeater call-sign>
Server -> User: "YSFACK" <4 bytes of salt>
User -> Server: "YSFK" <10 characters of hotspot/repeater call-sign> <32 bytes of SHA256(salt + password)>
Server -> User: "YSFACK" <10 characters of hotspot/repeater call-sign>

In case of failure: "YSFNAK" <4 bytes of salt>

User -> Server: "YSFO" <10 characters of call-sign> "group=" <string contains a talk group number>
Server -> User: "YSFACK" <10 characters of call-sign>

In case of failure: "YSFNAK" <10 characters of call-sign>

@@ Line 13: / Line 13: @@
 == Login procedure ==
-# User -> Server: "YSFL" <10 characters of call-sign>
+# User -> Server: "YSFL" <10 characters of hotspot/repeater call-sign>
 # Server -> User:  "YSFACK" <4 bytes of salt>
-# User -> Server: "YSFK" <10 characters of call-sign> <32 bytes of SHA256(salt + password)>
+# User -> Server: "YSFK" <10 characters of hotspot/repeater call-sign> <32 bytes of SHA256(salt + password)>
-# Sever -> User:  "YSFACK"
+# Server -> User:  "YSFACK" <10 characters of hotspot/repeater call-sign>
 In case of failure: "YSFNAK" <4 bytes of salt>