settings

const (
	// SplitAuto is the default dial strategy; chosen by the engine.
	SplitAuto int32 = iota
	// SplitTCPOrTLS splits first TCP segment or fragments the TLS SNI header.
	SplitTCPOrTLS
	// SplitTCP splits the first TCP segment.
	SplitTCP
	// SplitDesync splits the first TCP segment after desynchronizing the connection
	// by sending a different, but fixed, first TCP segement to the censor.
	SplitDesync
	// SplitNever doesn't muck; connects as-is.
	SplitNever
)

const (
	// RetryAfterSplit retries connection as-is after split fails.
	RetryAfterSplit int32 = iota
	// RetryWithSplit connects as-is, but retries with split.
	RetryWithSplit
	// RetryNever never retries.
	RetryNever
)

const (
	PlusFilterSafest = iota
	PlusOrderRandom
	PlusOrderFastest
	PlusOrderRobust
)

const (
	Ns4  = 0b010 // 2
	Ns46 = 0b110 // 6
	Ns6  = 0b100 // 4
)

const (
	IP4  = "4"
	IP46 = "46"
	IP6  = "6"
)

const (
	// local mode: backend.Auto uses local proxies (ex: ipn.Exit) only.
	AutoModeLocal int32 = iota
	// remote mode: backend.Auto uses remote proxies (ex: RPN) only.
	AutoModeRemote
	// hybrid mode: backend.Auto uses local and remote proxies.
	AutoModeHybrid
)

const (
	// DNSModeNone does not redirect DNS queries sent to the tunnel.
	DNSModeNone int32 = 0
	// DNSModeIP redirects DNS requests sent to the IP endpoint set by VPN.
	DNSModeIP int32 = 1
	// DNSModePort redirects all DNS requests on port 53.
	DNSModePort int32 = 2
)

const (
	// BlockModeNone filters no packet.
	BlockModeNone int32 = 0
	// BlockModeFilter filters packets on connection establishment.
	BlockModeFilter int32 = 1
	// BlockModeSink blackholes all packets.
	BlockModeSink int32 = 2
	// BlockModeFilterProc determines owner-uid of a tcp/udp connection
	// from procfs before filtering
	BlockModeFilterProc int32 = 3
)

const (
	// PtModeAuto does not enforce (but may still use) 6to4 protocol translation.
	PtModeAuto int32 = 0
	// PtModeForce64 enforces 6to4 protocol translation.
	PtModeForce64 int32 = 1
	// Android implements 464Xlat out-of-the-box, so this zero userspace impl
	PtModeNo46 int32 = 2
)

const AndroidCcUa = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.32 Safari/537.36"

const IntraUa = "Intra"

const NICID = 0x01