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protocol

package

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Versions in this module

v1

v1.0.6

Jan 23, 2025

Changes in this version

+ const ICMP_TTL

v1.0.5

Jan 21, 2025

v1.0.4

Nov 21, 2024

v1.0.3

Jan 20, 2024

v1.0.2

Nov 2, 2023

v1.0.1

Aug 24, 2023

Changes in this version

+ func HandleIpv4PktTtl(pktRaw []byte) (pkt []byte, alive bool)

+ func IpAddrToU(ipAddr []byte) (ipAddrU uint32)

+ func NatChangeDst(pktRaw []byte, ipAddr []byte, port uint16) (pkt []byte)

+ func NatChangeSrc(pktRaw []byte, ipAddr []byte, port uint16) (pkt []byte)

+ func NatGetSrcDstPort(pkt []byte) (srcPort uint16, dstPort uint16)

+ func ReCalcIpv4CheckSum(pktRaw []byte) (pkt []byte)

+ func ReCalcTcpCheckSum(pktRaw []byte) (pkt []byte)

+ func ReCalcUdpCheckSum(pktRaw []byte) (pkt []byte)

+ func UToIpAddr(ipAddrU uint32) (ipAddr []byte)

v1.0.0

Aug 19, 2023

Changes in this version

+ const ARP_REPLY

+ const ARP_REQUEST

+ const ARP_UNKNOWN

+ const ETH_PROTO_ARP

+ const ETH_PROTO_IPV4

+ const ETH_PROTO_IPV6

+ const ETH_PROTO_UNKNOWN

+ const ICMP_REPLY

+ const ICMP_REQUEST

+ const ICMP_UNKNOWN

+ const IEEE_802_3

+ const IPH_PROTO_ICMP

+ const IPH_PROTO_TCP

+ const IPH_PROTO_UDP

+ const IPH_PROTO_UNKNOWN

+ var ICMP_DEFAULT_PAYLOAD = []byte

+ func BuildArpPkt(option uint16, srcMac []byte, srcAddr []byte, dstMac []byte, dstAddr []byte) (pkt []byte, err error)

+ func BuildEthFrm(payload []byte, dstMac []byte, srcMac []byte, ethProto uint16) (frm []byte, err error)

+ func BuildIcmpPkt(payload []byte, icmpType uint8, icmpId []byte, icmpSeq []byte) (pkt []byte, err error)

+ func BuildIpv4Pkt(payload []byte, ipHeadProto uint8, srcAddr []byte, dstAddr []byte) (pkt []byte, err error)

+ func BuildTcpAckPkt(srcPort uint16, dstPort uint16, srcAddr []byte, dstAddr []byte, seqNum uint32, ...) (pkt []byte, err error)

+ func BuildTcpSynAckPkt(srcPort uint16, dstPort uint16, srcAddr []byte, dstAddr []byte, seqNum uint32, ...) (pkt []byte, err error)

+ func BuildTcpSynPkt(srcPort uint16, dstPort uint16, srcAddr []byte, dstAddr []byte, seqNum uint32) (pkt []byte, err error)

+ func BuildUdpPkt(payload []byte, srcPort uint16, dstPort uint16, srcAddr []byte, dstAddr []byte) (pkt []byte, err error)

+ func ConvIpAddrToUint32(ipAddr []byte) (ipAddrUint32 uint32)

+ func GetCheckSum(data []byte) []byte

+ func ParseArpPkt(pkt []byte) (option uint16, srcMac []byte, srcAddr []byte, dstMac []byte, dstAddr []byte, ...)

+ func ParseEthFrm(frm []byte) (payload []byte, dstMac []byte, srcMac []byte, ethProto uint16, err error)

+ func ParseIcmpPkt(pkt []byte) (payload []byte, icmpType uint8, icmpId []byte, icmpSeq []byte, err error)

+ func ParseIpv4Pkt(pkt []byte) (payload []byte, ipHeadProto uint8, srcAddr []byte, dstAddr []byte, err error)

+ func ParseUdpPkt(pkt []byte, srcAddr []byte, dstAddr []byte) (payload []byte, srcPort uint16, dstPort uint16, err error)

+ func SetRandIpHeaderId()