package protocol import ( "runtime" "v2ray.com/core/common/bitmask" "v2ray.com/core/common/net" "v2ray.com/core/common/uuid" ) // RequestCommand is a custom command in a proxy request. type RequestCommand byte const ( RequestCommandTCP = RequestCommand(0x01) RequestCommandUDP = RequestCommand(0x02) RequestCommandMux = RequestCommand(0x03) ) func (c RequestCommand) TransferType() TransferType { switch c { case RequestCommandTCP, RequestCommandMux: return TransferTypeStream case RequestCommandUDP: return TransferTypePacket default: return TransferTypeStream } } const ( // RequestOptionChunkStream indicates request payload is chunked. Each chunk consists of length, authentication and payload. RequestOptionChunkStream bitmask.Byte = 0x01 // RequestOptionConnectionReuse indicates client side expects to reuse the connection. RequestOptionConnectionReuse bitmask.Byte = 0x02 RequestOptionChunkMasking bitmask.Byte = 0x04 ) type RequestHeader struct { Version byte Command RequestCommand Option bitmask.Byte Security SecurityType Port net.Port Address net.Address User *User } func (h *RequestHeader) Destination() net.Destination { if h.Command == RequestCommandUDP { return net.UDPDestination(h.Address, h.Port) } return net.TCPDestination(h.Address, h.Port) } const ( ResponseOptionConnectionReuse bitmask.Byte = 0x01 ) type ResponseCommand interface{} type ResponseHeader struct { Option bitmask.Byte Command ResponseCommand } type CommandSwitchAccount struct { Host net.Address Port net.Port ID uuid.UUID Level uint32 AlterIds uint16 ValidMin byte } func (sc *SecurityConfig) GetSecurityType() SecurityType { if sc == nil || sc.Type == SecurityType_AUTO { if runtime.GOARCH == "amd64" || runtime.GOARCH == "s390x" { return SecurityType_AES128_GCM } return SecurityType_CHACHA20_POLY1305 } return sc.Type } func isDomainTooLong(domain string) bool { return len(domain) > 256 }