esp-idf/examples/protocols/sockets/udp_multicast/main/Kconfig.projbuild

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menu "Example Configuration"
choice EXAMPLE_IP_MODE
prompt "Multicast IP type"
help
Example can multicast IPV4, IPV6, or both.
config EXAMPLE_IPV4_V6
bool "IPV4 & IPV6"
select EXAMPLE_IPV4
select EXAMPLE_IPV6
config EXAMPLE_IPV4_ONLY
bool "IPV4"
select EXAMPLE_IPV4
config EXAMPLE_IPV6_ONLY
bool "IPV6"
select EXAMPLE_IPV6
endchoice
config EXAMPLE_IPV4
bool
config EXAMPLE_IPV6
bool
select EXAMPLE_CONNECT_IPV6
config EXAMPLE_MULTICAST_IPV4_ADDR
string "Multicast IPV4 Address (send & receive)"
default "232.10.11.12"
depends on EXAMPLE_IPV4
help
IPV4 multicast address. Example will both send to and listen to this address.
config EXAMPLE_MULTICAST_IPV6_ADDR
string "Multicast IPV6 Address (send & receive)"
default "FF02::FC"
depends on EXAMPLE_IPV6
help
IPV6 multicast address. Example will both send to and listen to this address.
The default FF02::FC address is a link-local multicast address.
Consult IPV6 specifications or documentation for information about
meaning of different IPV6 multicast ranges.
config EXAMPLE_PORT
int "Multicast port (send & receive)"
range 0 65535
default 3333
help
Multicast port the example will both send & receive UDP packets on.
config EXAMPLE_LOOPBACK
bool "Multicast loopback"
help
Enables IP_MULTICAST_LOOP/IPV6_MULTICAST_LOOP options, meaning
that packets transmitted from the device are also received by the
device itself.
config EXAMPLE_MULTICAST_TTL
int "Multicast packet TTL"
range 1 255
help
Sets TTL field of multicast packets. Separate from uni- & broadcast TTL.
choice EXAMPLE_MULTICAST_IF
prompt "Multicast Interface"
default EXAMPLE_MULTICAST_LISTEN_DEFAULT_IF
help
Multicast socket can bind to default interface, or all interfaces.
config EXAMPLE_MULTICAST_LISTEN_ALL_IF
bool "All interfaces"
config EXAMPLE_MULTICAST_LISTEN_DEFAULT_IF
bool "Default interface"
endchoice
endmenu