Block diagram
FormatOptions are used to transport additional information to the entries. This includes forinstance the information how a service instance is reachable (IP-Address, TransportProtocol, Port Number).
This page hosts a formal specification of AUTOSAR SOME/IP Service Discovery Options 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_options
title: AUTOSAR SOME/IP Service Discovery Options
license: CC0-1.0
ks-version: 0.9
endian: be
doc: |
FormatOptions are used to transport additional information to the entries.
This includes forinstance the information how a service instance is
reachable (IP-Address, TransportProtocol, Port Number).
doc-ref: |
https://www.autosar.org/fileadmin/standards/foundation/19-11/AUTOSAR_PRS_SOMEIPServiceDiscoveryProtocol.pdf
- section 4.1.2.4 Options Format
seq:
- id: entries
type: sd_option
repeat: eos
types:
sd_option:
seq:
- id: header
type: sd_option_header
- id: content
type:
switch-on: header.type
cases:
option_types::configuration_option : sd_configuration_option
option_types::load_balancing_option : sd_load_balancing_option
option_types::ipv4_endpoint_option : sd_ipv4_endpoint_option
option_types::ipv6_endpoint_option : sd_ipv6_endpoint_option
option_types::ipv4_multicast_option : sd_ipv4_multicast_option
option_types::ipv6_multicast_option : sd_ipv6_multicast_option
option_types::ipv4_sd_endpoint_option : sd_ipv4_sd_endpoint_option
option_types::ipv6_sd_endpoint_option : sd_ipv6_sd_endpoint_option
types:
sd_option_header:
seq:
- id: length
type: u2
- id: type
type: u1
enum: option_types
sd_configuration_option:
seq:
- id: reserved
type: u1
- id: configurations
type: sd_config_strings_container
size: _parent.header.length - 1
sd_config_strings_container:
seq:
- id: config_strings
type: sd_config_string
repeat: eos
sd_config_string:
seq:
- id: length
type: u1
- id: config
type: sd_config_kv_pair
size: length
if: length != 0
sd_config_kv_pair:
seq:
- id: key
type: str
terminator: 0x3D
encoding: ASCII
- id: value
type: str
size-eos: true
encoding: ASCII
sd_load_balancing_option:
seq:
- id: reserved
type: u1
- id: priority
type: u2
- id: weight
type: u2
sd_ipv4_endpoint_option:
seq:
- id: reserved
type: u1
- id: address
size: 4
- id: reserved2
type: u1
- id: l4_protocol
type: u1
- id: port
type: u2
sd_ipv6_endpoint_option:
seq:
- id: reserved
type: u1
- id: address
size: 16
- id: reserved2
type: u1
- id: l4_protocol
type: u1
- id: port
type: u2
sd_ipv4_multicast_option:
seq:
- id: reserved
type: u1
- id: address
size: 4
- id: reserved2
type: u1
- id: l4_protocol
type: u1
- id: port
type: u2
sd_ipv6_multicast_option:
seq:
- id: reserved
type: u1
- id: address
size: 16
- id: reserved2
type: u1
- id: l4_protocol
type: u1
- id: port
type: u2
sd_ipv4_sd_endpoint_option:
seq:
- id: reserved
type: u1
- id: address
size: 4
- id: reserved2
type: u1
- id: l4_protocol
type: u1
- id: port
type: u2
sd_ipv6_sd_endpoint_option:
seq:
- id: reserved
type: u1
- id: address
size: 16
- id: reserved2
type: u1
- id: l4_protocol
type: u1
- id: port
type: u2
enums:
option_types:
0x01 : configuration_option
0x02 : load_balancing_option
0x04 : ipv4_endpoint_option
0x06 : ipv6_endpoint_option
0x14 : ipv4_multicast_option
0x16 : ipv6_multicast_option
0x24 : ipv4_sd_endpoint_option
0x26 : ipv6_sd_endpoint_option