#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#

config NETUTILS_DHCPC
	bool "DHCP client"
	default n
	depends on NET_UDP
	select NET_BINDTODEVICE if !NET_UDP_NO_STACK
	---help---
		Enable support for the DHCP client.

if NETUTILS_DHCPC

config NETUTILS_DHCPC_HOST_NAME
	string "DHCP client host name"
	default "nuttx"

config NETUTILS_DHCPC_RECV_TIMEOUT_MS
	int "Number of receive timeout in millisecond"
	default 3000
	---help---
		This is the timeout value when dhcp client receives response

config NETUTILS_DHCPC_RETRIES
	int "Number of retries for dhcp client request"
	default 3
	---help---
		This setting determines how many times resolver retries request
		until failing.

config NETUTILS_DHCPC_BOOTP_FLAGS
	hex "Flags of Bootstrap"
	default 0x0000 if !NET_IPFORWARD
	default 0x8000 if NET_IPFORWARD
	---help---
		This setting to set the BOOTP broadcast flags.
		Reference RFC1542: Clarifications and Extensions for the
		Bootstrap Protocol.

		Note: We're not always able to receive unicast traffic before
		being fully configured, e.g. with forward enabled. Then we need
		to enable the broadcast flag under these situations.

config NETUTILS_DHCPC_RELEASE_RETRIES
	int "DHCP Release send retries"
	default 3
	---help---
		Number of times to retry sending DHCPRELEASE message if sendto() fails.
		Default is 3 attempts.

config NETUTILS_DHCPC_RELEASE_TRANSMISSION_DELAY_MS
	int "DHCP Release transmission delay (milliseconds)"
	default 10
	---help---
		Delay in milliseconds used for:
		1. Between DHCPRELEASE retry attempts when sendto() fails
		2. To ensure packet transmission before socket closure (if IP clearing enabled)
		Since UDP is connectionless, this delay gives the network stack
		time to actually send the packet. Set to 0 to disable delays
		(not recommended). Default is 10ms.

config NETUTILS_DHCPC_RELEASE_ENSURE_TRANSMISSION
	bool "Ensure DHCP Release message transmission"
	default y
	---help---
		Add a delay after successfully sending DHCPRELEASE message to ensure
		the packet is actually transmitted before the function returns.
		Since DHCP RELEASE has no ACK response from server, this delay helps
		ensure the release message reaches the server before closing the socket.
		Uses the same delay value as CONFIG_NETUTILS_DHCPC_RELEASE_TRANSMISSION_DELAY_MS.

config NETUTILS_DHCPC_RELEASE_CLEAR_IP
	bool "Clear IP address after DHCP release"
	default n
	---help---
		Clear all network configuration from the interface after sending
		DHCPRELEASE message. This includes IP address, subnet mask, default
		gateway. RFC 2131 doesn't mandate immediate clearing, so this is
		disabled by default to maintain connectivity.
		Enable this for scenarios where complete network reset is required.

endif