package kcp import ( "crypto/cipher" "v2ray.com/core/common" "v2ray.com/core/transport/internet" ) // GetMTUValue returns the value of MTU settings. func (v *Config) GetMTUValue() uint32 { if v == nil || v.Mtu == nil { return 1350 } return v.Mtu.Value } // GetTTIValue returns the value of TTI settings. func (v *Config) GetTTIValue() uint32 { if v == nil || v.Tti == nil { return 50 } return v.Tti.Value } // GetUplinkCapacityValue returns the value of UplinkCapacity settings. func (v *Config) GetUplinkCapacityValue() uint32 { if v == nil || v.UplinkCapacity == nil { return 5 } return v.UplinkCapacity.Value } // GetDownlinkCapacityValue returns the value of DownlinkCapacity settings. func (v *Config) GetDownlinkCapacityValue() uint32 { if v == nil || v.DownlinkCapacity == nil { return 20 } return v.DownlinkCapacity.Value } // GetWriteBufferSize returns the size of WriterBuffer in bytes. func (v *Config) GetWriteBufferSize() uint32 { if v == nil || v.WriteBuffer == nil { return 2 * 1024 * 1024 } return v.WriteBuffer.Size } // GetReadBufferSize returns the size of ReadBuffer in bytes. func (v *Config) GetReadBufferSize() uint32 { if v == nil || v.ReadBuffer == nil { return 2 * 1024 * 1024 } return v.ReadBuffer.Size } // GetSecurity returns the security settings. func (v *Config) GetSecurity() (cipher.AEAD, error) { return NewSimpleAuthenticator(), nil } func (v *Config) GetPackerHeader() (internet.PacketHeader, error) { if v.HeaderConfig != nil { rawConfig, err := v.HeaderConfig.GetInstance() if err != nil { return nil, err } return internet.CreatePacketHeader(rawConfig) } return nil, nil } func (v *Config) GetSendingInFlightSize() uint32 { size := v.GetUplinkCapacityValue() * 1024 * 1024 / v.GetMTUValue() / (1000 / v.GetTTIValue()) if size < 8 { size = 8 } return size } func (v *Config) GetSendingBufferSize() uint32 { return v.GetWriteBufferSize() / v.GetMTUValue() } func (v *Config) GetReceivingInFlightSize() uint32 { size := v.GetDownlinkCapacityValue() * 1024 * 1024 / v.GetMTUValue() / (1000 / v.GetTTIValue()) if size < 8 { size = 8 } return size } func (v *Config) GetReceivingBufferSize() uint32 { return v.GetReadBufferSize() / v.GetMTUValue() } func init() { common.Must(internet.RegisterProtocolConfigCreator(internet.TransportProtocol_MKCP, func() interface{} { return new(Config) })) }