layers

May 4, 2026

Changes in this version

+ var DNSRCodeBadAlg = &DNSRCode

+ var DNSRCodeBadCookie = &DNSRCode

+ var DNSRCodeBadKey = &DNSRCode

+ var DNSRCodeBadMode = &DNSRCode

+ var DNSRCodeBadName = &DNSRCode

+ var DNSRCodeBadTime = &DNSRCode

+ var DNSRCodeBadTrunc = &DNSRCode

+ var DNSRCodeBadVers = &DNSRCode

+ var DNSRCodeDSOTypeNI = &DNSRCode

+ var DNSRCodeFormatErr = &DNSRCode

+ var DNSRCodeNXDomain = &DNSRCode

+ var DNSRCodeNXRRSet = &DNSRCode

+ var DNSRCodeNoError = &DNSRCode

+ var DNSRCodeNotAuth = &DNSRCode

+ var DNSRCodeNotImpl = &DNSRCode

+ var DNSRCodeNotZone = &DNSRCode

+ var DNSRCodeRefused = &DNSRCode

+ var DNSRCodeServFail = &DNSRCode

+ var DNSRCodeYXDomain = &DNSRCode

+ var DNSRCodeYXRRSet = &DNSRCode

type DNSFlags

+ func NewDNSFlags(qr QRFlag, op OpCode, aa, tc, rd, ra, z, au, na bool, rc RCode) *DNSFlags

+ func NewDNSFlagsFromRaw(flags uint16) *DNSFlags

type DNSMessage

+ func NewDNSMessage(tid uint16, flags *DNSFlags, qd []*QueryEntry, an, ns, ar []*ResourceRecord) (*DNSMessage, error)

+ func (d *DNSMessage) MarshalBinary() ([]byte, error)

+ func (d *DNSMessage) ToBytes() []byte

+ type DNSOpCode struct

+ Desc string

+ Val OpCode

+ var DNSOpCodeDSO *DNSOpCode = &DNSOpCode{ ... }

+ var DNSOpCodeInvQuery *DNSOpCode = &DNSOpCode{ ... }

+ var DNSOpCodeNotify *DNSOpCode = &DNSOpCode{ ... }

+ var DNSOpCodeQuery *DNSOpCode = &DNSOpCode{ ... }

+ var DNSOpCodeStatus *DNSOpCode = &DNSOpCode{ ... }

+ var DNSOpCodeUpdate *DNSOpCode = &DNSOpCode{ ... }

+ func NewDNSOpCode(opcode OpCode) *DNSOpCode

+ func (do *DNSOpCode) String() string

+ type DNSQRFlag struct

+ Desc string

+ Val QRFlag

+ var DNSQuery *DNSQRFlag = &DNSQRFlag{ ... }

+ var DNSReply *DNSQRFlag = &DNSQRFlag{ ... }

+ func NewDNSQRFlag(qr QRFlag) *DNSQRFlag

+ func (qr *DNSQRFlag) String() string

+ type DNSRCode struct

+ Desc string

+ Val RCode

+ func NewDNSRCode(rc RCode) *DNSRCode

+ func (rc *DNSRCode) String() string

+ type OpCode uint8

+ const OpCodeDSO

+ const OpCodeInvQuery

+ const OpCodeNotify

+ const OpCodeQuery

+ const OpCodeStatus

+ const OpCodeUpdate

+ type QRFlag uint8

+ const QRFlagQuery

+ const QRFlagReply

type QueryEntry

+ func (qe *QueryEntry) MarshalBinary() ([]byte, error)

+ func (qe *QueryEntry) ToBytes() []byte

+ type RCode uint8

+ const RCodeBadAlg

+ const RCodeBadCookie

+ const RCodeBadKey

+ const RCodeBadMode

+ const RCodeBadName

+ const RCodeBadTime

+ const RCodeBadTrunc

+ const RCodeBadVers

+ const RCodeDSOTypeNI

+ const RCodeFormatError

+ const RCodeNXRRSet

+ const RCodeNameError

+ const RCodeNoError

+ const RCodeNotAuth

+ const RCodeNotImpl

+ const RCodeNotZone

+ const RCodeRefused

+ const RCodeServerFail

+ const RCodeYXDomain

+ const RCodeYXRRSet

+ type RData interface

+ ToBytes func() []byte

type RDataA

+ func (d *RDataA) MarshalBinary() ([]byte, error)

+ func (d *RDataA) ToBytes() []byte

type RDataAAAA

+ func (d *RDataAAAA) MarshalBinary() ([]byte, error)

+ func (d *RDataAAAA) ToBytes() []byte

type RDataCNAME

+ func (d *RDataCNAME) MarshalBinary() ([]byte, error)

+ func (d *RDataCNAME) ToBytes() []byte

type RDataHTTPS

+ func (d *RDataHTTPS) MarshalBinary() ([]byte, error)

+ func (d *RDataHTTPS) ToBytes() []byte

type RDataMX

+ func (d *RDataMX) MarshalBinary() ([]byte, error)

+ func (d *RDataMX) ToBytes() []byte

type RDataNS

+ func (d *RDataNS) MarshalBinary() ([]byte, error)

+ func (d *RDataNS) ToBytes() []byte

type RDataOPT

+ func (d *RDataOPT) MarshalBinary() ([]byte, error)

+ func (d *RDataOPT) ToBytes() []byte

type RDataSOA

+ func (d *RDataSOA) MarshalBinary() ([]byte, error)

+ func (d *RDataSOA) ToBytes() []byte

type RDataTXT

+ func (d *RDataTXT) MarshalBinary() ([]byte, error)

+ func (d *RDataTXT) ToBytes() []byte

type RDataUnknown

+ func (d *RDataUnknown) MarshalBinary() ([]byte, error)

+ func (d *RDataUnknown) ToBytes() []byte

+ type RecType uint16

+ const RecTypeA

+ const RecTypeAAAA

+ const RecTypeCNAME

+ const RecTypeHTTPS

+ const RecTypeMX

+ const RecTypeNS

+ const RecTypeOPT

+ const RecTypeSOA

+ const RecTypeTXT

type RecordClass

+ func NewRecordClass(cls uint16) *RecordClass

type RecordType

+ var DNSRecTypeA *RecordType = &RecordType{ ... }

+ var DNSRecTypeAAAA *RecordType = &RecordType{ ... }

+ var DNSRecTypeCNAME *RecordType = &RecordType{ ... }

+ var DNSRecTypeHTTPS *RecordType = &RecordType{ ... }

+ var DNSRecTypeMX *RecordType = &RecordType{ ... }

+ var DNSRecTypeNS *RecordType = &RecordType{ ... }

+ var DNSRecTypeOPT *RecordType = &RecordType{ ... }

+ var DNSRecTypeSOA *RecordType = &RecordType{ ... }

+ var DNSRecTypeTXT *RecordType = &RecordType{ ... }

+ func NewRecordType(rt RecType) *RecordType

type ResourceRecord

+ func (rt *ResourceRecord) MarshalBinary() ([]byte, error)

+ func (rt *ResourceRecord) ToBytes() []byte

type SvcParam

+ func (sp *SvcParam) MarshalBinary() ([]byte, error)

+ func (sp *SvcParam) ToBytes() []byte

Mar 29, 2026

Changes in this version

+ const HeaderSizeEthernet

+ const HeaderSizeIPv6

+ var ExtHdrs = []IPv6ExtHdrType

+ func GenerateRandomUint32BE() (uint32, error)

+ func GenerateRandomUint32LE() (uint32, error)

+ func MustGenerateRandomUint32BE() uint32

+ func MustGenerateRandomUint32LE() uint32

+ type DestOptsExtHeader struct

+ HdrExtLen uint8

+ NextHeader *IPProtocol

+ Options []TLVOpt

+ func (dst *DestOptsExtHeader) MarshalBinary() ([]byte, error)

+ func (dst *DestOptsExtHeader) SetNextHeader(next *IPProtocol)

+ func (dst *DestOptsExtHeader) ToBytes() []byte

+ func (dst *DestOptsExtHeader) Type() IPv6ExtHdrType

+ type FragmentExtHeader struct

+ FragmentOffset uint16

+ Identification uint32

+ M bool

+ NextHeader *IPProtocol

+ func (fr *FragmentExtHeader) MarshalBinary() ([]byte, error)

+ func (fr *FragmentExtHeader) SetNextHeader(next *IPProtocol)

+ func (fr *FragmentExtHeader) ToBytes() []byte

+ func (fr *FragmentExtHeader) Type() IPv6ExtHdrType

+ type HopByHopExtHeader struct

+ HdrExtLen uint8

+ NextHeader *IPProtocol

+ Options []TLVOpt

+ func (hbh *HopByHopExtHeader) MarshalBinary() ([]byte, error)

+ func (hbh *HopByHopExtHeader) SetNextHeader(next *IPProtocol)

+ func (hbh *HopByHopExtHeader) ToBytes() []byte

+ func (hbh *HopByHopExtHeader) Type() IPv6ExtHdrType

type IPProtocol

+ var IPProtocolAuthHeader *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolESP *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolFragment *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolHIP *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolHOPOPT *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolICMP *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolICMPv6 *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolMobility *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolNoNxt *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolOpts *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolRoute *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolShim6 *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolTCP *IPProtocol = &IPProtocol{ ... }

+ var IPProtocolUDP *IPProtocol = &IPProtocol{ ... }

+ func ExtHeaderProtoFromType(eht IPv6ExtHdrType) *IPProtocol

+ type IPv6ExtHdrOptType uint8

+ const OptAltMark

+ const OptCALIPSO

+ const OptDeprecated

+ const OptEndpointIdentification

+ const OptHomeAddress

+ const OptILNPNonce

+ const OptIOAMDestinationandIOAMHopbyHop

+ const OptIOAMDestinationandIOAMHopbyHop2

+ const OptIPDFF

+ const OptJumboPayload

+ const OptLineIdentification

+ const OptMPL

+ const OptMinimumPathMTUHopbyHop

+ const OptPad1

+ const OptPadN

+ const OptPerformanceandDiagnosticMetrics

+ const OptQuickStart

+ const OptRPL

+ const OptRPL2

+ const OptRouterAlert

+ const OptSMFDPD

+ const OptTunnelEncapsulationLimit

+ type IPv6ExtHdrType uint8

+ const ExtHdrAuthHeader

+ const ExtHdrESP

+ const ExtHdrFragment

+ const ExtHdrHIP

+ const ExtHdrHOPOPT

+ const ExtHdrMobility

+ const ExtHdrNoNxt

+ const ExtHdrOpts

+ const ExtHdrRoute

+ const ExtHdrShim6

+ type IPv6ExtHeader interface

+ MarshalBinary func() ([]byte, error)

+ SetNextHeader func(next *IPProtocol)

+ ToBytes func() []byte

+ Type func() IPv6ExtHdrType

+ type IPv6OptHomeAddress struct

+ HomeAddress netip.Addr

+ func (ha *IPv6OptHomeAddress) MarshalBinary() ([]byte, error)

+ func (ha *IPv6OptHomeAddress) ToBytes() []byte

+ func (ha *IPv6OptHomeAddress) Type() IPv6ExtHdrOptType

+ type IPv6OptPad1 struct

+ func (pad1 *IPv6OptPad1) MarshalBinary() ([]byte, error)

+ func (pad1 *IPv6OptPad1) ToBytes() []byte

+ func (pad1 *IPv6OptPad1) Type() IPv6ExtHdrOptType

+ type IPv6OptPad1M struct

+ Count int

+ func (pad1m *IPv6OptPad1M) MarshalBinary() ([]byte, error)

+ func (pad1m *IPv6OptPad1M) ToBytes() []byte

+ func (pad1m *IPv6OptPad1M) Type() IPv6ExtHdrOptType

+ type IPv6OptPadN struct

+ OptDataLen uint8

+ func (padn *IPv6OptPadN) MarshalBinary() ([]byte, error)

+ func (padn *IPv6OptPadN) ToBytes() []byte

+ func (padn *IPv6OptPadN) Type() IPv6ExtHdrOptType

type IPv6Packet

+ ExtHeaders []IPv6ExtHeader

+ FinalDestination netip.Addr

+ UpperLayer *IPProtocol

+ type IPv6RoutingType uint8

+ const CRH16

+ const CRH32

+ const Nimrod

+ const RPLSourceRouteHeade

+ const SegmentRoutingHeader

+ const SourceRoute

+ const Type2RoutingHeader

+ type MobilityExtHeader struct

+ Checksum uint16

+ HdrExtLen uint8

+ MHType uint8

+ MessageData []byte

+ NextHeader *IPProtocol

+ Options []TLVOpt

+ func (mb *MobilityExtHeader) MarshalBinary() ([]byte, error)

+ func (mb *MobilityExtHeader) SetNextHeader(next *IPProtocol)

+ func (mb *MobilityExtHeader) ToBytes() []byte

+ func (mb *MobilityExtHeader) Type() IPv6ExtHdrType

+ type NoNextExtHeader struct

+ func (nn *NoNextExtHeader) MarshalBinary() ([]byte, error)

+ func (nn *NoNextExtHeader) SetNextHeader(next *IPProtocol)

+ func (nn *NoNextExtHeader) ToBytes() []byte

+ func (nn *NoNextExtHeader) Type() IPv6ExtHdrType

+ type RoutingExtHeader struct

+ Data []byte

+ HdrExtLen uint8

+ NextHeader *IPProtocol

+ RoutingType IPv6RoutingType

+ SegmentsLeft uint8

+ func NewRouting0ExtHeader(next IPProto, addrs []netip.Addr) (*RoutingExtHeader, error)

+ func NewRouting2ExtHeader(next IPProto, homeAddress netip.Addr) (*RoutingExtHeader, error)

+ func (rt *RoutingExtHeader) MarshalBinary() ([]byte, error)

+ func (rt *RoutingExtHeader) SetNextHeader(next *IPProtocol)

+ func (rt *RoutingExtHeader) ToBytes() []byte

+ func (rt *RoutingExtHeader) Type() IPv6ExtHdrType

+ type TLVOpt interface

+ MarshalBinary func() ([]byte, error)

+ ToBytes func() []byte

+ Type func() IPv6ExtHdrOptType

Mar 13, 2026

Changes in this version

+ const ICMPv6NALen

+ const ICMPv6NSLen

+ const ICMPv6OptLenLLA

+ const ICMPv6OptLenMTU

+ const ICMPv6OptLenPrefixInfo

+ const ICMPv6OptLenRDNSS

+ const ICMPv6RALen

+ const ICMPv6RSLen

+ func CalculateInternetChecksum(data []byte, checksumOffset int) (uint16, error)

+ type ICMPv6Message interface

+ MarshalBinary func() ([]byte, error)

+ SetChecksum func(pseudo []byte) error

+ ToBytes func() []byte

+ Type func() ICMPv6MessageType

+ type ICMPv6MessageType uint8

+ const ICMPv6TypeNeighborAdvertisement

+ const ICMPv6TypeNeighborSolicitation

+ const ICMPv6TypeRouterAdvertisement

+ const ICMPv6TypeRouterSolicitation

+ type ICMPv6NeighborAdvertisement struct

+ Checksum uint16

+ Options []ICMPv6Option

+ Override bool

+ Router bool

+ Solicited bool

+ TargetAddress netip.Addr

+ func (na *ICMPv6NeighborAdvertisement) MarshalBinary() ([]byte, error)

+ func (na *ICMPv6NeighborAdvertisement) SetChecksum(pseudo []byte) error

+ func (na *ICMPv6NeighborAdvertisement) ToBytes() []byte

+ func (na *ICMPv6NeighborAdvertisement) Type() ICMPv6MessageType

+ type ICMPv6NeighborSolicitation struct

+ Checksum uint16

+ Options []ICMPv6Option

+ TargetAddress netip.Addr

+ func (ns *ICMPv6NeighborSolicitation) MarshalBinary() ([]byte, error)

+ func (ns *ICMPv6NeighborSolicitation) SetChecksum(pseudo []byte) error

+ func (ns *ICMPv6NeighborSolicitation) ToBytes() []byte

+ func (ns *ICMPv6NeighborSolicitation) Type() ICMPv6MessageType

+ type ICMPv6OptLinkLayerAddress struct

+ Addr net.HardwareAddr

+ Direction LLADirection

+ func (lla *ICMPv6OptLinkLayerAddress) MarshalBinary() ([]byte, error)

+ func (lla *ICMPv6OptLinkLayerAddress) OptType() ICMPv6OptionType

+ func (lla *ICMPv6OptLinkLayerAddress) ToBytes() []byte

+ type ICMPv6OptMTU struct

+ MTU uint32

+ func (om *ICMPv6OptMTU) MarshalBinary() ([]byte, error)

+ func (om *ICMPv6OptMTU) OptType() ICMPv6OptionType

+ func (om *ICMPv6OptMTU) ToBytes() []byte

+ type ICMPv6OptPrefixInfo struct

+ AutonomousAddressConfiguration bool

+ OnLink bool

+ PreferredLifetime uint32

+ Prefix netip.Addr

+ PrefixLength uint8

+ ValidLifetime uint32

+ func (pi *ICMPv6OptPrefixInfo) MarshalBinary() ([]byte, error)

+ func (pi *ICMPv6OptPrefixInfo) OptType() ICMPv6OptionType

+ func (pi *ICMPv6OptPrefixInfo) ToBytes() []byte

+ type ICMPv6OptRDNSS struct

+ Addresses []netip.Addr

+ Lifetime uint32

+ func (rd *ICMPv6OptRDNSS) MarshalBinary() ([]byte, error)

+ func (rd *ICMPv6OptRDNSS) OptType() ICMPv6OptionType

+ func (rd *ICMPv6OptRDNSS) ToBytes() []byte

+ type ICMPv6Option interface

+ MarshalBinary func() ([]byte, error)

+ OptType func() ICMPv6OptionType

+ ToBytes func() []byte

+ type ICMPv6OptionType uint8

+ const ICMPv6OptTypeMTU

+ const ICMPv6OptTypePrefixInfo

+ const ICMPv6OptTypeRDNSS

+ const ICMPv6OptTypeSourceLLA

+ const ICMPv6OptTypeTargetLLA

+ type ICMPv6RouterAdvertisement struct

+ Checksum uint16

+ CurHopLimit uint8

+ HomeAgent bool

+ ManagedConfiguration bool

+ NDProxy bool

+ Options []ICMPv6Option

+ OtherConfiguration bool

+ Prf ICMPv6RouterPreference

+ ReachableTime uint32

+ RetranstTimer uint32

+ RouterLifetime uint16

+ SNACRouter bool

+ func (ra *ICMPv6RouterAdvertisement) MarshalBinary() ([]byte, error)

+ func (ra *ICMPv6RouterAdvertisement) SetChecksum(pseudo []byte) error

+ func (ra *ICMPv6RouterAdvertisement) ToBytes() []byte

+ func (ra *ICMPv6RouterAdvertisement) Type() ICMPv6MessageType

+ type ICMPv6RouterPreference int

+ const ICMPv6RouterPreferenceHigh

+ const ICMPv6RouterPreferenceLow

+ const ICMPv6RouterPreferenceMedium

+ const ICMPv6RouterPreferenceReserved

+ type ICMPv6RouterSolicitation struct

+ Checksum uint16

+ Options []ICMPv6Option

+ func (rs *ICMPv6RouterSolicitation) MarshalBinary() ([]byte, error)

+ func (rs *ICMPv6RouterSolicitation) SetChecksum(pseudo []byte) error

+ func (rs *ICMPv6RouterSolicitation) ToBytes() []byte

+ func (rs *ICMPv6RouterSolicitation) Type() ICMPv6MessageType

type ICMPv6Segment

+ func (i *ICMPv6Segment) MarshalBinary() ([]byte, error)

+ func (i *ICMPv6Segment) ToBytes() []byte

+ func (i *ICMPv6Segment) UnmarshalBinary(data []byte) error

type IPProto

+ const ProtoAuthHeader

+ const ProtoESP

+ const ProtoFragment

+ const ProtoHIP

+ const ProtoHOPOPT

+ const ProtoICMPv6

+ const ProtoMobility

+ const ProtoNoNxt

+ const ProtoOpts

+ const ProtoRoute

+ const ProtoShim6

+ type IPProtocol struct

+ Desc string

+ Val IPProto

+ func NewIPv4Proto(proto IPProto) *IPProtocol

+ func NewIPv6Proto(proto IPProto) *IPProtocol

+ func (p *IPProtocol) String() string

type IPv6Packet

+ func NewIPv6Packet(srcIP, dstIP netip.Addr, proto IPProto, payload []byte) (*IPv6Packet, error)

+ func (p *IPv6Packet) MarshalBinary() ([]byte, error)

+ func (p *IPv6Packet) PseudoHeader() *IPv6PseudoHeader

+ func (p *IPv6Packet) SetPayload(payload []byte)

+ func (p *IPv6Packet) ToBytes() []byte

+ func (p *IPv6Packet) UnmarshalBinary(data []byte) error

+ type IPv6PseudoHeader struct

+ DstIP netip.Addr

+ NextHeader *IPProtocol

+ SrcIP netip.Addr

+ UpperLayerPacketLength uint32

+ func (ph *IPv6PseudoHeader) MarshalBinary() ([]byte, error)

+ func (ph *IPv6PseudoHeader) ToBytes() []byte

+ type LLADirection uint8

+ const LLASource

+ const LLATarget

type TrafficClass

+ func NewTrafficClass(tc uint8) *TrafficClass

Aug 12, 2025

Changes in this version

+ func GenerateRandomBytes(n int) ([]byte, error)

+ func GenerateRandomUint16BE() (uint16, error)

+ func GenerateRandomUint16LE() (uint16, error)

+ func GenerateRandomUint16NE() (uint16, error)

+ func MustGenerateRandomUint16NE() uint16

Aug 11, 2025

Changes in this version

+ var ErrParsingAddress = fmt.Errorf("failed parsing IP address")

+ var ErrSliceBounds = fmt.Errorf("slice bounds out of range")

+ var Layers = []LayerName

type ARPPacket

+ func (ap *ARPPacket) Name() LayerName

type DNSMessage

+ func (d *DNSMessage) MarshalJSON() ([]byte, error)

+ func (d *DNSMessage) Name() LayerName

+ func (d *DNSMessage) UnmarshalBinary(data []byte) error

type EthernetFrame

+ func (ef *EthernetFrame) Name() LayerName

type FTPMessage

+ func (f *FTPMessage) Name() LayerName

type HTTPMessage

+ func (h *HTTPMessage) Name() LayerName

type ICMPSegment

+ func (i *ICMPSegment) Name() LayerName

type ICMPv6Segment

+ func (i *ICMPv6Segment) Name() LayerName

type IPv4Packet

+ func (p *IPv4Packet) Name() LayerName

+ func (p *IPv4Packet) SetPayload(payload []byte)

type IPv6Packet

+ Payload []byte

+ func (p *IPv6Packet) Name() LayerName

type Layer

+ func GetLayer(layer LayerName) Layer

+ func ParseNextLayer(data []byte, src, dst *uint16) Layer

+ Name func() LayerName

+ type LayerName string

+ const LayerARP

+ const LayerDNS

+ const LayerETH

+ const LayerFTP

+ const LayerHTTP

+ const LayerICMP

+ const LayerICMPv6

+ const LayerIPv4

+ const LayerIPv6

+ const LayerSNMP

+ const LayerSSH

+ const LayerTCP

+ const LayerTLS

+ const LayerUDP

type RDataHTTPS

+ Length int

+ SvcParams []*SvcParam

+ SvcPriority uint16

+ TargetName string

type ResourceRecord

+ func (rt *ResourceRecord) Summary() string

type SNMPMessage

+ func (s *SNMPMessage) Name() LayerName

type SSHMessage

+ func (s *SSHMessage) Name() LayerName

+ type SvcParam struct

+ Key *SvcParamKey

+ Length uint16

+ Value []byte

+ func (sp *SvcParam) String() string

+ type SvcParamKey struct

+ Desc string

+ Val uint16

+ func (spk *SvcParamKey) String() string

type TCPSegment

+ Payload []byte

+ func (t *TCPSegment) Name() LayerName

type TLSMessage

+ func (t *TLSMessage) Name() LayerName

type UDPSegment

+ func (u *UDPSegment) Name() LayerName

+ func (u *UDPSegment) SetChecksum(pseudo []byte) error

Jul 26, 2025

Changes in this version

+ func CalculateIPv4Checksum(data []byte) (uint16, error)

+ func CalculateUDPChecksum(data []byte) (uint16, error)

+ type IPProto uint8

+ const ProtoICMP

+ const ProtoTCP

+ const ProtoUDP

type IPv4Flags

+ Raw uint8

+ func NewIPv4Flags(flags uint8) *IPv4Flags

type IPv4Packet

+ Payload []byte

+ func NewIPv4Packet(srcIP, dstIP netip.Addr, proto IPProto, payload []byte) (*IPv4Packet, error)

+ func (p *IPv4Packet) MarshalBinary() ([]byte, error)

+ func (p *IPv4Packet) PseudoHeader() *IPv4PseudoHeader

+ func (p *IPv4Packet) ToBytes() []byte

+ func (p *IPv4Packet) UnmarshalBinary(data []byte) error

+ type IPv4Proto struct

+ Desc string

+ Val IPProto

+ func (p *IPv4Proto) String() string

+ type IPv4PseudoHeader struct

+ DstIP netip.Addr

+ Protocol *IPv4Proto

+ SrcIP netip.Addr

+ TotalLength uint16

+ func (ph *IPv4PseudoHeader) MarshalBinary() ([]byte, error)

+ func (ph *IPv4PseudoHeader) ToBytes() []byte

type UDPSegment

+ Payload []byte

+ func NewUDPSegment(srcPort, dstPort uint16, payload []byte, pseudo *[]byte) (*UDPSegment, error)

+ func (u *UDPSegment) MarshalBinary() ([]byte, error)

+ func (u *UDPSegment) ToBytes() []byte

+ func (u *UDPSegment) UnmarshalBinary(data []byte) error

Jul 12, 2025

Changes in this version

+ var ErrTLSTooShort = fmt.Errorf("tls message too short")

+ type ARPOperation struct

+ Desc string

+ Val Operation

+ func (ao *ARPOperation) String() string

type ARPPacket

+ DstVendor string

+ SrcVendor string

+ func NewARPPacket(op Operation, senderMAC net.HardwareAddr, senderIP netip.Addr, ...) (*ARPPacket, error)

+ func (ap *ARPPacket) MarshalBinary() ([]byte, error)

+ func (ap *ARPPacket) ToBytes() []byte

+ func (ap *ARPPacket) UnmarshalBinary(data []byte) error

+ type EtherType uint16

+ const EtherTypeARP

+ const EtherTypeIPv4

+ const EtherTypeIPv6

type EthernetFrame

+ DstVendor string

+ Payload []byte

+ SrcVendor string

+ func NewEthernetFrame(dstMAC, srcMAC net.HardwareAddr, et EtherType, payload []byte) (*EthernetFrame, error)

+ func (ef *EthernetFrame) MarshalBinary() ([]byte, error)

+ func (ef *EthernetFrame) ToBytes() []byte

+ func (ef *EthernetFrame) UnmarshalBinary(data []byte) error

+ type EthernetType struct

+ Desc string

+ Val EtherType

+ func (et *EthernetType) String() string

+ type Operation uint16

+ const OperationReply

+ const OperationRequest

+ type TCPFlag struct

+ Desc string

+ Val uint8

type TCPFlags

+ Val []*TCPFlag

type TLSVersion

+ Val uint16

Jul 6, 2025

Changes in this version

+ var TLSTooShortErr = fmt.Errorf("tls message too short")

Jun 17, 2025

Changes in this version

type HTTPMessage

+ func (h *HTTPMessage) MarshalJSON() ([]byte, error)

+ type HTTPRequest struct

+ ContentLength int

+ Header http.Header

+ Host string

+ Method string

+ Proto string

+ URI string

+ type HTTPRequestWrapper struct

+ Request HTTPRequest

+ type HTTPResponse struct

+ ContentLength int

+ Header http.Header

+ Proto string

+ Status string

+ type HTTPResponseWrapper struct

+ Response HTTPResponse

type TLSClientHello

+ func (tch *TLSClientHello) MarshalJSON() ([]byte, error)

+ type TLSClientHelloRequest struct

+ ALPN []string

+ CipherSuites []string

+ Extensions []string

+ SNI string

+ SessionID string

+ Type string

+ Version string

+ type TLSClientHelloRequestWrapper struct

+ Request TLSClientHelloRequest

type TLSServerHello

+ func (tsh *TLSServerHello) MarshalJSON() ([]byte, error)

+ type TLSServerHelloResponse struct

+ CipherSuite string

+ Extensions []string

+ SessionID string

+ SupportedVersion string

+ Type string

+ Version string

+ type TLSServerHelloResponseWrapper struct

+ Response TLSServerHelloResponse

Jun 16, 2025

Changes in this version

+ const ClientHelloTLSVal

+ const HandshakeTLSVal

+ const ServerHelloTLSVal

+ type CipherSuite struct

+ Desc string

+ Value uint16

+ func (cs *CipherSuite) String() string

+ type Extension struct

+ Desc string

+ Value uint16

+ func (e *Extension) String() string

+ type HSTLSParser interface

+ ParseHS func(data []byte) error

+ func HSTLSParserByType(hstype uint8) HSTLSParser

type HTTPMessage

+ Request *http.Request

+ Response *http.Response

+ func (h *HTTPMessage) IsEmpty() bool

type Record

+ Data []byte

+ type ServerName struct

+ Length uint16

+ SNListLength uint16

+ SNName string

+ SNNameLength uint16

+ SNType uint8

+ Type uint16

+ func (sn *ServerName) Parse(data []byte) error

+ func (sn *ServerName) String() string

+ type TLSClientHello struct

+ ALPN []string

+ CipherSuites []*CipherSuite

+ CipherSuitesLength uint16

+ CmprMethods []byte

+ CmprMethodsLength uint8

+ ExtensionLength uint16

+ Extensions []*Extension

+ Length int

+ Random []byte

+ ServerName *ServerName

+ SessionID string

+ SessionIDLength uint8

+ Type uint8

+ TypeDesc string

+ Version *TLSVersion

+ func (tch *TLSClientHello) ParseHS(data []byte) error

+ func (tch *TLSClientHello) String() string

+ type TLSServerHello struct

+ CipherSuite *CipherSuite

+ CmprMethod uint8

+ ExtensionLength uint16

+ Extensions []*Extension

+ Length int

+ Random []byte

+ SessionID string

+ SessionIDLength uint8

+ SupportedVersion *TLSVersion

+ Type uint8

+ TypeDesc string

+ Version *TLSVersion

+ func (tsh *TLSServerHello) ParseHS(data []byte) error

+ func (tsh *TLSServerHello) String() string

+ type TLSVersion struct

+ Desc string

+ Value uint16

+ func (tv *TLSVersion) String() string

Sep 17, 2024

Changes in this version

+ var LayerMap = map[string]Layer

+ type ARPPacket struct

+ HardwareType uint16

+ Hlen uint8

+ Op uint16

+ OpDesc string

+ Plen uint8

+ ProtocolType uint16

+ ProtocolTypeDesc string

+ SenderIP netip.Addr

+ SenderMAC net.HardwareAddr

+ TargetIP netip.Addr

+ TargetMAC net.HardwareAddr

+ func (ap *ARPPacket) NextLayer() (layer string, payload []byte)

+ func (ap *ARPPacket) Parse(data []byte) error

+ func (ap *ARPPacket) String() string

+ func (ap *ARPPacket) Summary() string

+ type DNSFlags struct

+ AA uint8

+ AU uint8

+ NA uint8

+ OPCode uint8

+ OPCodeDesc string

+ QR uint8

+ QRDesc string

+ RA uint8

+ RCode uint8

+ RCodeDesc string

+ RD uint8

+ Raw uint16

+ TC uint8

+ Z uint8

+ func (df *DNSFlags) String() string

+ type DNSMessage struct

+ ANCount uint16

+ ARCount uint16

+ AdditionalRRs []*ResourceRecord

+ AnswerRRs []*ResourceRecord

+ AuthorityRRs []*ResourceRecord

+ Flags *DNSFlags

+ NSCount uint16

+ QDCount uint16

+ Questions []*QueryEntry

+ TransactionID uint16

+ func (d *DNSMessage) NextLayer() (layer string, payload []byte)

+ func (d *DNSMessage) Parse(data []byte) error

+ func (d *DNSMessage) String() string

+ func (d *DNSMessage) Summary() string

+ type EthernetFrame struct

+ DstMAC net.HardwareAddr

+ EtherType uint16

+ EtherTypeDesc string

+ SrcMAC net.HardwareAddr

+ func (ef *EthernetFrame) NextLayer() (string, []byte)

+ func (ef *EthernetFrame) Parse(data []byte) error

+ func (ef *EthernetFrame) String() string

+ func (ef *EthernetFrame) Summary() string

+ type FTPMessage struct

+ func (f *FTPMessage) NextLayer() (layer string, payload []byte)

+ func (f *FTPMessage) Parse(data []byte) error

+ func (f *FTPMessage) String() string

+ func (f *FTPMessage) Summary() string

+ type HTTPMessage struct

+ func (h *HTTPMessage) NextLayer() (layer string, payload []byte)

+ func (h *HTTPMessage) Parse(data []byte) error

+ func (h *HTTPMessage) String() string

+ func (h *HTTPMessage) Summary() string

+ type ICMPSegment struct

+ Checksum uint16

+ Code uint8

+ CodeDesc string

+ Data []byte

+ Type uint8

+ TypeDesc string

+ func (i *ICMPSegment) NextLayer() (layer string, payload []byte)

+ func (i *ICMPSegment) Parse(data []byte) error

+ func (i *ICMPSegment) String() string

+ func (i *ICMPSegment) Summary() string

+ type ICMPv6Segment struct

+ Checksum uint16

+ Code uint8

+ CodeDesc string

+ Data []byte

+ Type uint8

+ TypeDesc string

+ func (i *ICMPv6Segment) NextLayer() (layer string, payload []byte)

+ func (i *ICMPv6Segment) Parse(data []byte) error

+ func (i *ICMPv6Segment) String() string

+ func (i *ICMPv6Segment) Summary() string

+ type IPv4Flags struct

+ DF uint8

+ MF uint8

+ Reserved uint8

+ func (i *IPv4Flags) String() string

+ type IPv4Packet struct

+ DSCP uint8

+ DSCPDesc string

+ DstIP netip.Addr

+ ECN uint8

+ Flags *IPv4Flags

+ FragmentOffset uint16

+ HeaderChecksum uint16

+ IHL uint8

+ Identification uint16

+ Options []byte

+ Protocol uint8

+ ProtocolDesc string

+ SrcIP netip.Addr

+ TTL uint8

+ TotalLength uint16

+ Version uint8

+ func (p *IPv4Packet) NextLayer() (string, []byte)

+ func (p *IPv4Packet) Parse(data []byte) error

+ func (p *IPv4Packet) String() string

+ func (p *IPv4Packet) Summary() string

+ type IPv6Packet struct

+ DstIP netip.Addr

+ FlowLabel uint32

+ HopLimit uint8

+ NextHeader uint8

+ NextHeaderDesc string

+ PayloadLength uint16

+ SrcIP netip.Addr

+ TrafficClass *TrafficClass

+ Version uint8

+ func (p *IPv6Packet) NextLayer() (string, []byte)

+ func (p *IPv6Packet) Parse(data []byte) error

+ func (p *IPv6Packet) String() string

+ func (p *IPv6Packet) Summary() string

+ type Layer interface

+ NextLayer func() (layer string, payload []byte)

+ Parse func(data []byte) error

+ Summary func() string

+ type Message struct

+ MesssageType uint8

+ MesssageTypeDesc string

+ PacketLength uint32

+ PaddingLength uint8

+ Payload []byte

+ func (m *Message) String() string

+ type QueryEntry struct

+ Class *RecordClass

+ Name string

+ Type *RecordType

+ func (qe *QueryEntry) String() string

+ type RDataA struct

+ Address netip.Addr

+ func (d *RDataA) String() string

+ type RDataAAAA struct

+ Address netip.Addr

+ func (d *RDataAAAA) String() string

+ type RDataCNAME struct

+ CName string

+ func (d *RDataCNAME) String() string

+ type RDataHTTPS struct

+ Data string

+ func (d *RDataHTTPS) String() string

+ type RDataMX struct

+ Exchange string

+ Preference uint16

+ func (d *RDataMX) String() string

+ type RDataNS struct

+ NsdName string

+ func (d *RDataNS) String() string

+ type RDataOPT struct

+ DataLen uint16

+ EDNSVer uint8

+ HigherBitsExtRCode uint8

+ UDPPayloadSize uint16

+ Z uint16

+ func (d *RDataOPT) String() string

+ type RDataSOA struct

+ ExpireLimit uint32

+ MinimumTTL uint32

+ PrimaryNS string

+ RefreshInterval uint32

+ RespAuthorityMailbox string

+ RetryInterval uint32

+ SerialNumber uint32

+ func (d *RDataSOA) String() string

+ type RDataTXT struct

+ TxtData string

+ func (d *RDataTXT) String() string

+ type RDataUnknown struct

+ Data string

+ func (d *RDataUnknown) String() string

+ type Record struct

+ ContentType uint8

+ ContentTypeDesc string

+ Length uint16

+ Version uint16

+ VersionDesc string

+ func (r *Record) String() string

+ type RecordClass struct

+ Name string

+ Val uint16

+ func (c *RecordClass) String() string

+ type RecordType struct

+ Name string

+ Val uint16

+ func (rt *RecordType) String() string

+ type ResourceRecord struct

+ Class *RecordClass

+ Name string

+ RDLength uint16

+ RData fmt.Stringer

+ TTL uint32

+ Type *RecordType

+ func (rt *ResourceRecord) String() string

+ type SNMPMessage struct

+ Payload []byte

+ func (s *SNMPMessage) NextLayer() (layer string, payload []byte)

+ func (s *SNMPMessage) Parse(data []byte) error

+ func (s *SNMPMessage) String() string

+ func (s *SNMPMessage) Summary() string

+ type SSHMessage struct

+ Messages []*Message

+ Protocol string

+ func (s *SSHMessage) NextLayer() (layer string, payload []byte)

+ func (s *SSHMessage) Parse(data []byte) error

+ func (s *SSHMessage) String() string

+ func (s *SSHMessage) Summary() string

+ type TCPFlags struct

+ ACK uint8

+ CWR uint8

+ ECE uint8

+ FIN uint8

+ PSH uint8

+ RST uint8

+ Raw uint8

+ SYN uint8

+ URG uint8

+ func (t *TCPFlags) String() string

+ type TCPSegment struct

+ AckNumber uint32

+ Checksum uint16

+ DataOffset uint8

+ DstPort uint16

+ Flags *TCPFlags

+ Options []byte

+ Reserved uint8

+ SeqNumber uint32

+ SrcPort uint16

+ UrgentPointer uint16

+ WindowSize uint16

+ func (t *TCPSegment) NextLayer() (string, []byte)

+ func (t *TCPSegment) Parse(data []byte) error

+ func (t *TCPSegment) String() string

+ func (t *TCPSegment) Summary() string

+ type TLSMessage struct

+ Data []byte

+ Records []*Record

+ func (t *TLSMessage) NextLayer() (layer string, payload []byte)

+ func (t *TLSMessage) Parse(data []byte) error

+ func (t *TLSMessage) String() string

+ func (t *TLSMessage) Summary() string

+ type TrafficClass struct

+ DSCP uint8

+ DSCPDesc string

+ ECN uint8

+ Raw uint8

+ func (p *TrafficClass) String() string

+ type UDPSegment struct

+ Checksum uint16

+ DstPort uint16

+ SrcPort uint16

+ UDPLength uint16

+ func (u *UDPSegment) NextLayer() (string, []byte)

+ func (u *UDPSegment) Parse(data []byte) error

+ func (u *UDPSegment) String() string

+ func (u *UDPSegment) Summary() string