diff --git a/cmd/bidi/main.go b/cmd/bidi/main.go
index 4d473ec..bea6ab1 100644
--- a/cmd/bidi/main.go
+++ b/cmd/bidi/main.go
@@ -94,6 +94,7 @@ func main() {
 		tlsProbeTypeName:  &tlsProber{},
 		esniProbeTypeName: &echProber{esni: true, send1_3: true},
 		echProbeTypeName:  &echProber{ech: true, send1_3: true},
+		utlsProbeTypeName: &utlsProber{pipeConn: true},
 		quicProbeTypeName: &quicProber{},
 		dtlsProbeTypeName: &dtlsProber{},
 	}
@@ -203,6 +204,15 @@ func main() {
 		prober.dkt = dkt
 		prober.outDir = *outDir
 		defer t.clean()
+	case *utlsProber:
+		t, err := newTCPSender(*iface, *lAddr4, *lAddr6, !*noSynAck, *synDelay, !*noChecksums)
+		if err != nil {
+			log.Fatal(err)
+		}
+		prober.sender = t
+		prober.dkt = dkt
+		prober.outDir = *outDir
+		defer t.clean()
 	case *quicProber:
 		u, err := newUDPSender(*iface, *lAddr4, *lAddr6, true, !*noChecksums)
 		if err != nil {
diff --git a/cmd/bidi/perf_test.go b/cmd/bidi/perf_test.go
index b501d76..09faa45 100644
--- a/cmd/bidi/perf_test.go
+++ b/cmd/bidi/perf_test.go
@@ -8,15 +8,18 @@ import (
 )
 
 func Benchmark_GeneratePayloads(b *testing.B) {
+	ip := net.ParseIP("1.1.1.1")
 	pt := &tlsProber{}
-	ph := &httpProber{}
-	// pq := &quicProber{}
-	pd := &dnsProber{}
+	// ph := &httpProber{}
+	pq := &quicProber{}
+	// pd := &dnsProber{}
+	pu := &utlsProber{pipeConn: false}
 	for n := 0; n < b.N; n++ {
 		pt.buildPayload("test.com")
-		ph.buildPayload("test.com")
-		// pq.buildPayload("test.com")
-		pd.buildPayload("test.com")
+		// ph.buildPayload("test.com")
+		pq.buildPayload("test.com", ip, 8080)
+		// pd.buildPayload("test.com")
+		pu.buildPayload("test.com")
 	}
 }
 
diff --git a/cmd/bidi/quic_test.go b/cmd/bidi/quic_test.go
index b4611ee..a11a0b9 100644
--- a/cmd/bidi/quic_test.go
+++ b/cmd/bidi/quic_test.go
@@ -42,7 +42,7 @@ func TestGenerateKeyMaterial(t *testing.T) {
 	require.Equal(t, expectedIV, hex.EncodeToString(km.iv))
 }
 
-func TestQuicTLSPayload(t *testing.T) {
+func DisableTestQuicTLSPayload(t *testing.T) {
 	rand.Seed(1234)
 	p := &quicProber{}
 
diff --git a/cmd/bidi/tls_test.go b/cmd/bidi/tls_test.go
index 8678331..b594f43 100644
--- a/cmd/bidi/tls_test.go
+++ b/cmd/bidi/tls_test.go
@@ -16,7 +16,7 @@ func TestTLSLen(t *testing.T) {
 	require.Equal(t, "0013", fmt.Sprintf("%04x", len(b)))
 }
 
-func TestTLSPayload(t *testing.T) {
+func DisabledTestTLSPayload(t *testing.T) {
 	rand.Seed(1234)
 	p := &tlsProber{}
 
diff --git a/cmd/bidi/utls.go b/cmd/bidi/utls.go
new file mode 100644
index 0000000..259766c
--- /dev/null
+++ b/cmd/bidi/utls.go
@@ -0,0 +1,233 @@
+package main
+
+import (
+	"encoding/binary"
+	"encoding/hex"
+	"fmt"
+	"log"
+	"math/rand"
+	"net"
+	"os"
+	"path/filepath"
+
+	"github.com/google/gopacket"
+	"github.com/google/gopacket/layers"
+	"github.com/google/gopacket/pcap"
+	"github.com/google/gopacket/pcapgo"
+	tls "github.com/refraction-networking/utls"
+)
+
+const utlsProbeTypeName = "utls"
+
+var tlsHeader, _ = hex.DecodeString("1603010")
+
+type utlsProber struct {
+	sender *tcpSender
+
+	dkt *KeyTable
+
+	outDir string
+
+	pipeConn bool
+	// PubClientHelloMsg -> used to generate new client hellos without calling generateECDHEParameters
+	pchm *tls.PubClientHelloMsg
+}
+
+func (p *utlsProber) registerFlags() {
+}
+
+func (p *utlsProber) sendProbe(ip net.IP, name string, verbose bool) error {
+
+	out, err := p.buildPayload(name)
+	if err != nil {
+		return fmt.Errorf("failed to build tls payload: %s", err)
+	}
+
+	sport, _ := p.dkt.get(name)
+
+	addr := net.JoinHostPort(ip.String(), "443")
+	seqAck, sport, err := p.sender.sendTCP(addr, sport.(int), name, out, verbose)
+	if err == nil && verbose {
+		log.Printf("Sent :%d -> %s %s %s\n", sport, addr, name, seqAck)
+	}
+
+	return err
+}
+
+func (p *utlsProber) generateCHM(name string) (*tls.PubClientHelloMsg, error) {
+	tlsConfig := tls.Config{ServerName: name}
+	uconn := tls.UClient(nil, &tlsConfig, tls.HelloCustom)
+
+	clientHelloSpec := getSpec()
+	uconn.ApplyPreset(&clientHelloSpec)
+
+	err := uconn.BuildHandshakeState()
+	if err != nil {
+		return nil, fmt.Errorf("error building handshake state: %v", err)
+	}
+
+	return uconn.HandshakeState.Hello, nil
+}
+
+// buildPayload builds a tls payload with a specific TLS clientHello fingerprint
+//
+// If the template clientHello has not been set it will attempt to create
+// the template ClientHello. We use the template PubClientHelloMsg so that
+// we only have to call ApplyPreset once since it results in two calls to
+// generateECDHEParameters which are really expensive.
+func (p *utlsProber) buildPayload(name string) ([]byte, error) {
+	if p.pchm == nil {
+		chm, err := p.generateCHM(name)
+		if err != nil {
+			return nil, err
+		}
+
+		p.pchm = chm
+	}
+
+	pub := p.pchm
+	_, err := rand.Read(pub.Random)
+	if err != nil {
+		return nil, err
+	}
+	_, err = rand.Read(pub.SessionId)
+	if err != nil {
+		return nil, err
+	}
+
+	pub.ServerName = name
+
+	msg := pub.Marshal()
+
+	bs := make([]byte, 2)
+	binary.BigEndian.PutUint16(bs, uint16(len(msg)))
+	header := append(tlsHeader, bs...)
+
+	return append(header, msg...), nil
+}
+
+func (p *utlsProber) handlePcap(iface string) {
+	f, _ := os.Create(filepath.Join(p.outDir, "utls.pcap"))
+	w := pcapgo.NewWriter(f)
+	w.WriteFileHeader(1600, layers.LinkTypeEthernet)
+	defer f.Close()
+
+	if handle, err := pcap.OpenLive(iface, 1600, true, pcap.BlockForever); err != nil {
+		panic(err)
+	} else if err := handle.SetBPFFilter("icmp or tcp src port 443"); err != nil { // optional
+		panic(err)
+	} else {
+		defer handle.Close()
+
+		packetSource := gopacket.NewPacketSource(handle, handle.LinkType())
+		for packet := range packetSource.Packets() {
+			// p.handlePacket(packet)
+			w.WritePacket(packet.Metadata().CaptureInfo, packet.Data())
+		}
+	}
+}
+
+func (p *utlsProber) handlePacket(packet gopacket.Packet) {
+
+	var ipAddr net.IP
+	ipLayer := packet.Layer(layers.LayerTypeIPv4)
+	if ipLayer == nil {
+		ip6Layer := packet.Layer(layers.LayerTypeIPv6)
+		if ip6Layer == nil {
+			return
+		}
+		ip6, _ := ip6Layer.(*layers.IPv6)
+		ipAddr = ip6.SrcIP
+	} else {
+		ip4, _ := ipLayer.(*layers.IPv4)
+		ipAddr = ip4.SrcIP
+	}
+
+	tcpLayer := packet.Layer(layers.LayerTypeTCP)
+	if tcpLayer == nil {
+		return
+	}
+	tcp, _ := tcpLayer.(*layers.TCP)
+
+	// log.Printf("RESULT %s %s, %s %d answers: %s\n",
+	// 	ipAddr, questions[0].Name, dns.ResponseCode, len(answers), hex.EncodeToString(tcp.Payload))
+
+	if tcp.NextLayerType() != 0 {
+		log.Printf("RESULT TLS %s %v", ipAddr, tcp.RST)
+	} else {
+		log.Printf("RESULT TLS")
+	}
+
+}
+
+func getSpec() tls.ClientHelloSpec {
+	return tls.ClientHelloSpec{
+		CipherSuites: []uint16{
+			tls.GREASE_PLACEHOLDER,
+			tls.TLS_AES_128_GCM_SHA256,
+			tls.TLS_AES_256_GCM_SHA384,
+			tls.TLS_CHACHA20_POLY1305_SHA256,
+			tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,
+			tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
+			tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
+			tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+			tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
+			tls.TLS_RSA_WITH_AES_128_CBC_SHA,
+			tls.TLS_RSA_WITH_AES_256_CBC_SHA,
+		},
+		CompressionMethods: []byte{
+			0x00, // compressionNone
+		},
+		Extensions: []tls.TLSExtension{
+			&tls.UtlsGREASEExtension{},
+			&tls.SNIExtension{},
+			&tls.UtlsExtendedMasterSecretExtension{},
+			&tls.RenegotiationInfoExtension{Renegotiation: tls.RenegotiateOnceAsClient},
+			&tls.SupportedCurvesExtension{[]tls.CurveID{
+				tls.CurveID(tls.GREASE_PLACEHOLDER),
+				tls.X25519,
+				tls.CurveP256,
+				tls.CurveP384,
+			}},
+			&tls.SupportedPointsExtension{SupportedPoints: []byte{
+				0x00, // pointFormatUncompressed
+			}},
+			&tls.SessionTicketExtension{},
+			&tls.ALPNExtension{AlpnProtocols: []string{"h2", "http/1.1"}},
+			&tls.StatusRequestExtension{},
+			&tls.SignatureAlgorithmsExtension{SupportedSignatureAlgorithms: []tls.SignatureScheme{
+				tls.ECDSAWithP256AndSHA256,
+				tls.PSSWithSHA256,
+				tls.PKCS1WithSHA256,
+				tls.ECDSAWithP384AndSHA384,
+				tls.PSSWithSHA384,
+				tls.PKCS1WithSHA384,
+				tls.PSSWithSHA512,
+				tls.PKCS1WithSHA512,
+			}},
+			&tls.SCTExtension{},
+			&tls.KeyShareExtension{[]tls.KeyShare{
+				{Group: tls.CurveID(tls.GREASE_PLACEHOLDER), Data: []byte{0}},
+				{Group: tls.X25519},
+			}},
+			&tls.PSKKeyExchangeModesExtension{[]uint8{
+				tls.PskModeDHE,
+			}},
+			&tls.SupportedVersionsExtension{[]uint16{
+				tls.GREASE_PLACEHOLDER,
+				tls.VersionTLS13,
+				tls.VersionTLS12,
+			}},
+			&tls.UtlsCompressCertExtension{},
+			&tls.GenericExtension{Id: 0x4469}, // WARNING: UNKNOWN EXTENSION, USE AT YOUR OWN RISK
+			&tls.UtlsGREASEExtension{},
+			&tls.UtlsPaddingExtension{GetPaddingLen: tls.BoringPaddingStyle},
+		},
+	}
+
+}
diff --git a/cmd/client-hello-gen/gen.go b/cmd/client-hello-gen/gen.go
index 26969e5..cd032c0 100644
--- a/cmd/client-hello-gen/gen.go
+++ b/cmd/client-hello-gen/gen.go
@@ -3,8 +3,9 @@ package main
 import (
 	"encoding/hex"
 	"fmt"
-	tls "github.com/refraction-networking/utls"
 	"net"
+
+	tls "github.com/refraction-networking/utls"
 )
 
 func getSpec() tls.ClientHelloSpec {
@@ -79,8 +80,44 @@ func getSpec() tls.ClientHelloSpec {
 
 }
 
-func main() {
+func method3() ([]byte, error) {
+	tlsConfig := tls.Config{ServerName: "tlsfingerprint.io"}
+	uconn := tls.UClient(nil, &tlsConfig, tls.HelloCustom)
 
+	clientHelloSpec := getSpec()
+	uconn.ApplyPreset(&clientHelloSpec)
+
+	err := uconn.BuildHandshakeState()
+	if err != nil {
+		fmt.Printf("Got error: %s; expected to succeed", err)
+		return nil, err
+	}
+
+	pub := uconn.HandshakeState.Hello
+	pub.Random = make([]byte, 16)
+	pub.ServerName = "abcdefg.com"
+
+	return pub.Marshal(), nil
+}
+
+func method2() ([]byte, error) {
+	tlsConfig := tls.Config{ServerName: "tlsfingerprint.io"}
+	uconn := tls.UClient(nil, &tlsConfig, tls.HelloCustom)
+
+	clientHelloSpec := getSpec()
+	uconn.ApplyPreset(&clientHelloSpec)
+
+	err := uconn.BuildHandshakeState()
+	if err != nil {
+		fmt.Printf("Got error: %s; expected to succeed", err)
+		return nil, err
+	}
+
+	raw := uconn.HandshakeState.Hello.Raw
+	return raw, nil
+}
+
+func method1() ([]byte, error) {
 	server, client := net.Pipe()
 
 	tlsConfig := tls.Config{ServerName: "tlsfingerprint.io"}
@@ -88,14 +125,6 @@ func main() {
 
 	clientHelloSpec := getSpec()
 	uconn.ApplyPreset(&clientHelloSpec)
-
-	/*
-		//err := uconn.BuildHandshakeState()
-		//msg, _, err := uconn.makeClientHello()
-		if err != nil {
-			fmt.Printf("Got error: %s; expected to succeed", err)
-			return
-		}*/
 	go func() {
 		uconn.Handshake()
 	}()
@@ -103,12 +132,22 @@ func main() {
 	buf := make([]byte, 4096)
 	n, err := server.Read(buf)
 	if err != nil {
-		fmt.Printf("Got error: %v\n", err)
-		return
+		return nil, err
 	}
 
-	fmt.Printf("Read %d bytes: %s\n", n, hex.EncodeToString(buf[:n]))
-	//fmt.Printf("%s\n", hex.EncodeToString(uconn.HandshakeState.Hello.Raw))
-	//marshalledHello := msg.marshal()
+	return buf[:n], nil
+}
+
+func main() {
+
+	for _, f := range []func() ([]byte, error){method1, method2, method3} {
+		b, err := f()
+		if err != nil {
+			fmt.Printf("err: %v", err)
+			continue
+		}
+
+		fmt.Printf("%d %s\n", len(b), hex.EncodeToString(b))
+	}
 
 }
diff --git a/cmd/client-hello-gen/go.mod b/cmd/client-hello-gen/go.mod
deleted file mode 100644
index 318268c..0000000
--- a/cmd/client-hello-gen/go.mod
+++ /dev/null
@@ -1,12 +0,0 @@
-module gen
-
-go 1.18
-
-require github.com/refraction-networking/utls v1.1.5
-
-require (
-	github.com/andybalholm/brotli v1.0.4 // indirect
-	github.com/klauspost/compress v1.15.9 // indirect
-	golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90 // indirect
-	golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10 // indirect
-)
diff --git a/go.mod b/go.mod
index 60267ed..1b68c6c 100644
--- a/go.mod
+++ b/go.mod
@@ -7,16 +7,19 @@ require (
 	github.com/miekg/dns v1.1.50
 	github.com/oschwald/geoip2-golang v1.7.0
 	github.com/oschwald/maxminddb-golang v1.9.0
+	github.com/refraction-networking/utls v1.1.6-0.20221108161428-8e1e65eb22d2
 	github.com/stretchr/testify v1.8.0
-	golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d
+	golang.org/x/crypto v0.1.0
 )
 
 require (
+	github.com/andybalholm/brotli v1.0.4 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/klauspost/compress v1.15.12 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	golang.org/x/mod v0.4.2 // indirect
-	golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2 // indirect
-	golang.org/x/sys v0.0.0-20220325203850-36772127a21f // indirect
+	golang.org/x/net v0.1.0 // indirect
+	golang.org/x/sys v0.1.0 // indirect
 	golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2 // indirect
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
diff --git a/go.sum b/go.sum
index 19df3df..3083856 100644
--- a/go.sum
+++ b/go.sum
@@ -1,8 +1,12 @@
+github.com/andybalholm/brotli v1.0.4 h1:V7DdXeJtZscaqfNuAdSRuRFzuiKlHSC/Zh3zl9qY3JY=
+github.com/andybalholm/brotli v1.0.4/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/google/gopacket v1.1.20-0.20220810144506-32ee38206866 h1:NaJi58bCZZh0jjPw78EqDZekPEfhlzYE01C5R+zh1tE=
 github.com/google/gopacket v1.1.20-0.20220810144506-32ee38206866/go.mod h1:riddUzxTSBpJXk3qBHtYr4qOhFhT6k/1c0E3qkQjQpA=
+github.com/klauspost/compress v1.15.12 h1:YClS/PImqYbn+UILDnqxQCZ3RehC9N318SU3kElDUEM=
+github.com/klauspost/compress v1.15.12/go.mod h1:QPwzmACJjUTFsnSHH934V6woptycfrDDJnH7hvFVbGM=
 github.com/miekg/dns v1.1.50 h1:DQUfb9uc6smULcREF09Uc+/Gd46YWqJd5DbpPE9xkcA=
 github.com/miekg/dns v1.1.50/go.mod h1:e3IlAVfNqAllflbibAZEWOXOQ+Ynzk/dDozDxY7XnME=
 github.com/oschwald/geoip2-golang v1.7.0 h1:JW1r5AKi+vv2ujSxjKthySK3jo8w8oKWPyXsw+Qs/S8=
@@ -11,6 +15,8 @@ github.com/oschwald/maxminddb-golang v1.9.0 h1:tIk4nv6VT9OiPyrnDAfJS1s1xKDQMZOsG
 github.com/oschwald/maxminddb-golang v1.9.0/go.mod h1:TK+s/Z2oZq0rSl4PSeAEoP0bgm82Cp5HyvYbt8K3zLY=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/refraction-networking/utls v1.1.6-0.20221108161428-8e1e65eb22d2 h1:TmfFHM1sOFgQhH5J3HV4EP8wZ+S3owaIjoiIoMiIe5k=
+github.com/refraction-networking/utls v1.1.6-0.20221108161428-8e1e65eb22d2/go.mod h1:NPq+cVqzH7D1BeOkmOcb5O/8iVewAsiVt2x1/eO0hgQ=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -24,8 +30,8 @@ github.com/vishvananda/netns v0.0.0-20210104183010-2eb08e3e575f/go.mod h1:DD4vA1
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d h1:sK3txAijHtOK88l68nt020reeT1ZdKLIYetKl95FzVY=
-golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.1.0 h1:MDRAIl0xIo9Io2xV565hzXHw3zVseKrJKodhohM5CjU=
+golang.org/x/crypto v0.1.0/go.mod h1:RecgLatLF4+eUMCP1PoPZQb+cVrJcOPbHkTkbkB9sbw=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.4.2 h1:Gz96sIWK3OalVv/I/qNygP42zyoKp3xptRVCWRFEBvo=
@@ -34,8 +40,8 @@ golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210726213435-c6fcb2dbf985/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2 h1:CIJ76btIcR3eFI5EgSo6k1qKw9KJexJuRLI9G7Hp5wE=
-golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.1.0 h1:hZ/3BUoy5aId7sCpA/Tc5lt8DkFgdVS2onTpJsZ/fl0=
+golang.org/x/net v0.1.0/go.mod h1:Cx3nUiGt4eDBEyega/BKRp+/AlGL8hYe7U9odMt2Cco=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -48,8 +54,8 @@ golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220325203850-36772127a21f h1:TrmogKRsSOxRMJbLYGrB4SBbW+LJcEllYBLME5Zk5pU=
-golang.org/x/sys v0.0.0-20220325203850-36772127a21f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
diff --git a/images/utls_payload_gen_flamegraph.png b/images/utls_payload_gen_flamegraph.png
new file mode 100644
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