Block diagram
The entries are used to synchronize the state of services instances and the Publish/-Subscribe handling.
This page hosts a formal specification of AUTOSAR SOME/IP Service Discovery Entries using Kaitai Struct. This specification can be automatically translated into a variety of programming languages to get a parsing library.
meta:
id: some_ip_sd_entries
title: AUTOSAR SOME/IP Service Discovery Entries
license: CC0-1.0
ks-version: 0.9
endian: be
doc: |
The entries are used to synchronize the state of services instances and the
Publish/-Subscribe handling.
doc-ref: |
https://www.autosar.org/fileadmin/standards/foundation/19-11/AUTOSAR_PRS_SOMEIPServiceDiscoveryProtocol.pdf
- section 4.1.2.3 Entry Format
seq:
- id: entries
type: sd_entry
repeat: eos
types:
sd_entry:
seq:
- id: header
type: sd_entry_header
- id: content
type:
switch-on: header.type
cases:
entry_types::find : sd_service_entry
entry_types::offer : sd_service_entry
entry_types::subscribe : sd_eventgroup_entry
entry_types::subscribe_ack : sd_eventgroup_entry
types:
sd_entry_header:
seq:
- id: type
type: u1
enum: entry_types
- id: index_first_options
type: u1
- id: index_second_options
type: u1
- id: number_first_options
type: b4
- id: number_second_options
type: b4
- id: service_id
type: u2
- id: instance_id
type: u2
- id: major_version
type: u1
- id: ttl
type: b24
sd_service_entry:
seq:
- id: minor_version
type: u4
sd_eventgroup_entry:
seq:
- id: reserved
type: u1
- id: initial_data_requested
type: b1
- id: reserved2
type: b3
- id: counter
type: b4
- id: event_group_id
type: u2
enums:
entry_types:
0x00 : find
0x01 : offer
0x06 : subscribe
0x07 : subscribe_ack