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Commands: Display Post-Quantum key exchange in tls ping #4857

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Merged
RPRX merged 4 commits into from
Jul 19, 2025
Merged

Commands: Display Post-Quantum key exchange in tls ping #4857

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6977110
Command tls: Display Post-Quantum key exchange
Fangliding Jul 4, 2025
d8557bf
Update CurvePreferences
Fangliding Jul 4, 2025
bcb11ad
Refine unsafe usage
Fangliding Jul 11, 2025
f2195fa
Support port in domain
Fangliding Jul 12, 2025
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37 changes: 32 additions & 5 deletions main/commands/all/tls/ping.go
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,9 @@ import (
"encoding/base64"
"fmt"
"net"
"reflect"
"strconv"
"unsafe"

"github.com/xtls/xray-core/main/commands/base"
. "github.com/xtls/xray-core/transport/internet/tls"
Expand Down Expand Up @@ -36,8 +39,13 @@ func executePing(cmd *base.Command, args []string) {
base.Fatalf("domain not specified")
}

domain := cmdPing.Flag.Arg(0)
fmt.Println("Tls ping: ", domain)
domainWithPort := cmdPing.Flag.Arg(0)
fmt.Println("Tls ping: ", domainWithPort)
TargetPort := 443
domain, port, err := net.SplitHostPort(domainWithPort)
if err == nil {
TargetPort, _ = strconv.Atoi(port)
}

var ip net.IP
if len(*pingIPStr) > 0 {
Expand All @@ -58,14 +66,14 @@ func executePing(cmd *base.Command, args []string) {
fmt.Println("-------------------")
fmt.Println("Pinging without SNI")
{
tcpConn, err := net.DialTCP("tcp", nil, &net.TCPAddr{IP: ip, Port: 443})
tcpConn, err := net.DialTCP("tcp", nil, &net.TCPAddr{IP: ip, Port: TargetPort})
if err != nil {
base.Fatalf("Failed to dial tcp: %s", err)
}
tlsConn := gotls.Client(tcpConn, &gotls.Config{
InsecureSkipVerify: true,
NextProtos: []string{"http/1.1"},
MaxVersion: gotls.VersionTLS12,
MaxVersion: gotls.VersionTLS13,
MinVersion: gotls.VersionTLS12,
// Do not release tool before v5's refactor
// VerifyPeerCertificate: showCert(),
Expand All @@ -75,6 +83,7 @@ func executePing(cmd *base.Command, args []string) {
fmt.Println("Handshake failure: ", err)
} else {
fmt.Println("Handshake succeeded")
printTLSConnDetail(tlsConn)
printCertificates(tlsConn.ConnectionState().PeerCertificates)
}
tlsConn.Close()
Expand All @@ -90,7 +99,7 @@ func executePing(cmd *base.Command, args []string) {
tlsConn := gotls.Client(tcpConn, &gotls.Config{
ServerName: domain,
NextProtos: []string{"http/1.1"},
MaxVersion: gotls.VersionTLS12,
MaxVersion: gotls.VersionTLS13,
MinVersion: gotls.VersionTLS12,
// Do not release tool before v5's refactor
// VerifyPeerCertificate: showCert(),
Expand All @@ -100,6 +109,7 @@ func executePing(cmd *base.Command, args []string) {
fmt.Println("handshake failure: ", err)
} else {
fmt.Println("handshake succeeded")
printTLSConnDetail(tlsConn)
printCertificates(tlsConn.ConnectionState().PeerCertificates)
}
tlsConn.Close()
Expand All @@ -117,6 +127,23 @@ func printCertificates(certs []*x509.Certificate) {
}
}

func printTLSConnDetail(tlsConn *gotls.Conn) {
var tlsVersion string
if tlsConn.ConnectionState().Version == gotls.VersionTLS13 {
tlsVersion = "TLS 1.3"
} else if tlsConn.ConnectionState().Version == gotls.VersionTLS12 {
tlsVersion = "TLS 1.2"
}
fmt.Println("TLS Version:", tlsVersion)
curveID := *(*gotls.CurveID)(unsafe.Pointer(reflect.ValueOf(tlsConn).Elem().FieldByName("curveID").UnsafeAddr()))
if curveID != 0 {
PostQuantum := (curveID == gotls.X25519MLKEM768)
fmt.Println("Post-Quantum key exchange:", PostQuantum, "("+curveID.String()+")")
} else {
fmt.Println("Post-Quantum key exchange: false (RSA Exchange)")
}
}

func showCert() func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
return func(rawCerts [][]byte, verifiedChains [][]*x509.Certificate) error {
hash := GenerateCertChainHash(rawCerts)
Expand Down
10 changes: 5 additions & 5 deletions transport/internet/tls/config.go
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Original file line number Diff line number Diff line change
Expand Up @@ -486,11 +486,11 @@ func ConfigFromStreamSettings(settings *internet.MemoryStreamConfig) *Config {

func ParseCurveName(curveNames []string) []tls.CurveID {
curveMap := map[string]tls.CurveID{
"curvep256": tls.CurveP256,
"curvep384": tls.CurveP384,
"curvep521": tls.CurveP521,
"x25519": tls.X25519,
"x25519kyber768draft00": 0x6399,
"curvep256": tls.CurveP256,
"curvep384": tls.CurveP384,
"curvep521": tls.CurveP521,
"x25519": tls.X25519,
"x25519mlkem768": tls.X25519MLKEM768,
}

var curveIDs []tls.CurveID
Expand Down
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