fingerprint

Documentation

Overview

Package `fingerprint` reads `metadata` and calculate the JA3, JA4, HTTP2 fingerprints, etc.

It also implements `header_injector` interface from package `reverseproxy`, which allows passing fingerprints to the backend through the forwarding request headers.

Index

• Variables
• func JA3Fingerprint(data *metadata.Metadata) (string, error)
• func JA4Fingerprint(data *metadata.Metadata) (string, error)
• func RegisterDurationMetric(registry *prometheus.Registry, buckets []float64, prefix string)
• type FingerprintFunc
• type FingerprintHeaderInjector
  • func NewFingerprintHeaderInjector(headerName string, fingerprintFunc FingerprintFunc) *FingerprintHeaderInjector
  • func (i *FingerprintHeaderInjector) GetHeaderName() string
  • func (i *FingerprintHeaderInjector) GetHeaderValue(req *http.Request) (string, error)
• type HTTP2FingerprintParam
  • func (p *HTTP2FingerprintParam) HTTP2Fingerprint(data *metadata.Metadata) (string, error)

Variables

var (
	VerboseLogs bool
	Logger      *log.Logger
)

Functions

func JA3Fingerprint

func JA3Fingerprint(data *metadata.Metadata) (string, error)

JA3Fingerprint is a FingerprintFunc

func JA4Fingerprint

func JA4Fingerprint(data *metadata.Metadata) (string, error)

JA4Fingerprint is a FingerprintFunc

func RegisterDurationMetric

func RegisterDurationMetric(registry *prometheus.Registry, buckets []float64, prefix string)

Types

type FingerprintFunc

type FingerprintFunc func(*metadata.Metadata) (string, error)

type FingerprintHeaderInjector

type FingerprintHeaderInjector struct {
	HeaderName                       string
	FingerprintFunc                  FingerprintFunc
	FingerprintDurationSucceedMetric prometheus.Observer
	FingerprintDurationErrorMetric   prometheus.Observer
}

FingerprintHeaderInjector implements reverseproxy.HeaderInjector

func NewFingerprintHeaderInjector

func NewFingerprintHeaderInjector(headerName string, fingerprintFunc FingerprintFunc) *FingerprintHeaderInjector

func (*FingerprintHeaderInjector) GetHeaderName

func (i *FingerprintHeaderInjector) GetHeaderName() string

func (*FingerprintHeaderInjector) GetHeaderValue

func (i *FingerprintHeaderInjector) GetHeaderValue(req *http.Request) (string, error)

type HTTP2FingerprintParam

type HTTP2FingerprintParam struct {
	MaxPriorityFrames uint
}

func (*HTTP2FingerprintParam) HTTP2Fingerprint

func (p *HTTP2FingerprintParam) HTTP2Fingerprint(data *metadata.Metadata) (string, error)

HTTP2Fingerprint is a FingerprintFunc, it creates Akamai HTTP2 fingerprints as the suggested format: S[;]|WU|P[,]#|PS[,]