diff --git a/conn.go b/conn.go
index b007f7d..224522d 100644
--- a/conn.go
+++ b/conn.go
@@ -198,6 +198,15 @@ func (c *Conn) CurrentCipher() (string, error) {
 	return C.GoString(p), nil
 }
 
+func (c *Conn) GetVersion() (string, error) {
+	p := C.X_SSL_get_version(c.ssl)
+	if p == nil {
+		return "", errors.New("Failed to get version")
+	}
+
+	return C.GoString(p), nil
+}
+
 func (c *Conn) fillInputBuffer() error {
 	for {
 		n, err := c.into_ssl.ReadFromOnce(c.conn)
diff --git a/examples/client/ntls_client.go b/examples/client/ntls_client.go
new file mode 100644
index 0000000..7167383
--- /dev/null
+++ b/examples/client/ntls_client.go
@@ -0,0 +1,151 @@
+// Copyright 2023 The Tongsuo Project Authors. All Rights Reserved.
+//
+// Licensed under the Apache License 2.0 (the "License").  You may not use
+// this file except in compliance with the License.  You can obtain a copy
+// in the file LICENSE in the source distribution or at
+// https://github.com/Tongsuo-Project/tongsuo-go-sdk/blob/main/LICENSE
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"os"
+
+	ts "github.com/tongsuo-project/tongsuo-go-sdk"
+)
+
+func main() {
+	cipherSuite := ""
+	signCertFile := ""
+	signKeyFile := ""
+	encCertFile := ""
+	encKeyFile := ""
+	caFile := ""
+	connAddr := ""
+
+	flag.StringVar(&connAddr, "conn", "127.0.0.1:443", "host:port")
+	flag.StringVar(&cipherSuite, "cipher", "ECC-SM2-SM4-CBC-SM3", "cipher suite")
+	flag.StringVar(&signCertFile, "sign_cert", "", "sign certificate file")
+	flag.StringVar(&signKeyFile, "sign_key", "", "sign private key file")
+	flag.StringVar(&encCertFile, "enc_cert", "", "encrypt certificate file")
+	flag.StringVar(&encKeyFile, "enc_key", "", "encrypt private key file")
+	flag.StringVar(&caFile, "CAfile", "", "CA certificate file")
+
+	flag.Parse()
+
+	ctx, err := ts.NewCtxWithVersion(ts.NTLS)
+	if err != nil {
+		panic(err)
+	}
+
+	if err := ctx.SetCipherList(cipherSuite); err != nil {
+		panic(err)
+	}
+
+	if signCertFile != "" {
+		signCertPEM, err := os.ReadFile(signCertFile)
+		if err != nil {
+			panic(err)
+		}
+		signCert, err := ts.LoadCertificateFromPEM(signCertPEM)
+		if err != nil {
+			panic(err)
+		}
+
+		if err := ctx.UseSignCertificate(signCert); err != nil {
+			panic(err)
+		}
+	}
+
+	if signKeyFile != "" {
+		signKeyPEM, err := os.ReadFile(signKeyFile)
+		if err != nil {
+			panic(err)
+		}
+		signKey, err := ts.LoadPrivateKeyFromPEM(signKeyPEM)
+		if err != nil {
+			panic(err)
+		}
+
+		if err := ctx.UseSignPrivateKey(signKey); err != nil {
+			panic(err)
+		}
+	}
+
+	if encCertFile != "" {
+		encCertPEM, err := os.ReadFile(encCertFile)
+		if err != nil {
+			panic(err)
+		}
+		encCert, err := ts.LoadCertificateFromPEM(encCertPEM)
+		if err != nil {
+			panic(err)
+		}
+
+		if err := ctx.UseEncryptCertificate(encCert); err != nil {
+			panic(err)
+		}
+	}
+
+	if encKeyFile != "" {
+		encKeyPEM, err := os.ReadFile(encKeyFile)
+		if err != nil {
+			panic(err)
+		}
+
+		encKey, err := ts.LoadPrivateKeyFromPEM(encKeyPEM)
+		if err != nil {
+			panic(err)
+		}
+
+		if err := ctx.UseEncryptPrivateKey(encKey); err != nil {
+			panic(err)
+		}
+	}
+
+	if caFile != "" {
+		if err := ctx.LoadVerifyLocations(caFile, ""); err != nil {
+			panic(err)
+		}
+	}
+
+	conn, err := ts.Dial("tcp", connAddr, ctx, ts.InsecureSkipHostVerification)
+	if err != nil {
+		panic(err)
+	}
+	defer conn.Close()
+
+	cipher, err := conn.CurrentCipher()
+	if err != nil {
+		panic(err)
+	}
+
+	ver, err := conn.GetVersion()
+	if err != nil {
+		panic(err)
+	}
+
+	fmt.Println("New connection: " + ver + ", cipher=" + cipher)
+
+	reader := bufio.NewReader(os.Stdin)
+	text, _ := reader.ReadString('\n')
+
+	request := text + "\n"
+	fmt.Println(">>>\n" + request)
+	if _, err := conn.Write([]byte(request)); err != nil {
+		panic(err)
+	}
+
+	buffer := make([]byte, 4096)
+	n, err := conn.Read(buffer)
+	if err != nil {
+		fmt.Println("read error:", err)
+		return
+	}
+
+	fmt.Println("<<<\n" + string(buffer[:n]))
+
+	return
+}
diff --git a/examples/server/ntls_server.go b/examples/server/ntls_server.go
new file mode 100644
index 0000000..f218e2f
--- /dev/null
+++ b/examples/server/ntls_server.go
@@ -0,0 +1,178 @@
+// Copyright 2023 The Tongsuo Project Authors. All Rights Reserved.
+//
+// Licensed under the Apache License 2.0 (the "License").  You may not use
+// this file except in compliance with the License.  You can obtain a copy
+// in the file LICENSE in the source distribution or at
+// https://github.com/Tongsuo-Project/tongsuo-go-sdk/blob/main/LICENSE
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"log"
+	"net"
+	"os"
+
+	ts "github.com/tongsuo-project/tongsuo-go-sdk"
+)
+
+func handleConn(conn net.Conn) {
+	defer conn.Close()
+
+	// Read incoming data into buffer
+	req, err := bufio.NewReader(conn).ReadString('\n')
+	if err != nil {
+		log.Printf("Error reading incoming data: %v", err)
+		return
+	}
+
+	ntls := conn.(*ts.Conn)
+	ver, err := ntls.GetVersion()
+	if err != nil {
+		log.Println("failed get version: ", err)
+		return
+	}
+
+	cipher, err := ntls.CurrentCipher()
+	if err != nil {
+		log.Println("failed get cipher: ", err)
+		return
+	}
+
+	log.Println("New connection: " + ver + ", cipher=" + cipher)
+	log.Println("Recv:\n" + req)
+
+	// Send a response back to the client
+	if _, err = conn.Write([]byte(req + "\n")); err != nil {
+		log.Printf("Unable to send response: %v", err)
+		return
+	}
+
+	log.Println("Sent:\n" + req)
+	log.Println("Close connection")
+}
+
+func newNTLSServer(acceptAddr string, signCertFile string, signKeyFile string, encCertFile string, encKeyFile string, cafile string) (net.Listener, error) {
+	ctx, err := ts.NewCtxWithVersion(ts.NTLS)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	if err := ctx.LoadVerifyLocations(cafile, ""); err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	encCertPEM, err := os.ReadFile(encCertFile)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	signCertPEM, err := os.ReadFile(signCertFile)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	encCert, err := ts.LoadCertificateFromPEM(encCertPEM)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	signCert, err := ts.LoadCertificateFromPEM(signCertPEM)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	if err := ctx.UseEncryptCertificate(encCert); err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	if err := ctx.UseSignCertificate(signCert); err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	encKeyPEM, err := os.ReadFile(encKeyFile)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	signKeyPEM, err := os.ReadFile(signKeyFile)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	encKey, err := ts.LoadPrivateKeyFromPEM(encKeyPEM)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	signKey, err := ts.LoadPrivateKeyFromPEM(signKeyPEM)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	if err := ctx.UseEncryptPrivateKey(encKey); err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	if err := ctx.UseSignPrivateKey(signKey); err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	lis, err := ts.Listen("tcp", acceptAddr, ctx)
+	if err != nil {
+		log.Println(err)
+		return nil, err
+	}
+
+	return lis, nil
+}
+
+func main() {
+	signCertFile := ""
+	signKeyFile := ""
+	encCertFile := ""
+	encKeyFile := ""
+	caFile := ""
+	acceptAddr := ""
+
+	flag.StringVar(&acceptAddr, "accept", "127.0.0.1:443", "host:port")
+	flag.StringVar(&signCertFile, "sign_cert", "", "sign certificate file")
+	flag.StringVar(&signKeyFile, "sign_key", "", "sign private key file")
+	flag.StringVar(&encCertFile, "enc_cert", "", "encrypt certificate file")
+	flag.StringVar(&encKeyFile, "enc_key", "", "encrypt private key file")
+	flag.StringVar(&caFile, "CAfile", "", "CA certificate file")
+
+	flag.Parse()
+
+	server, err := newNTLSServer(acceptAddr, signCertFile, signKeyFile, encCertFile, encKeyFile, caFile)
+
+	if err != nil {
+		return
+	}
+	defer server.Close()
+
+	for {
+		conn, err := server.Accept()
+		if err != nil {
+			log.Println("failed accept: ", err)
+			continue
+		}
+
+		go handleConn(conn)
+	}
+}
diff --git a/shim.c b/shim.c
index 02a9c82..61ca40a 100644
--- a/shim.c
+++ b/shim.c
@@ -445,9 +445,15 @@ long X_SSL_clear_options(SSL* ssl, long options) {
 long X_SSL_set_tlsext_host_name(SSL *ssl, const char *name) {
    return SSL_set_tlsext_host_name(ssl, name);
 }
-const char * X_SSL_get_cipher_name(const SSL *ssl) {
+
+const char *X_SSL_get_cipher_name(const SSL *ssl) {
    return SSL_get_cipher_name(ssl);
 }
+
+const char *X_SSL_get_version(const SSL *ssl) {
+   return SSL_get_version(ssl);
+}
+
 int X_SSL_session_reused(SSL *ssl) {
     return SSL_session_reused(ssl);
 }
diff --git a/shim.h b/shim.h
index a6c9b32..ea41c72 100644
--- a/shim.h
+++ b/shim.h
@@ -50,7 +50,8 @@ extern long X_SSL_set_options(SSL* ssl, long options);
 extern long X_SSL_get_options(SSL* ssl);
 extern long X_SSL_clear_options(SSL* ssl, long options);
 extern long X_SSL_set_tlsext_host_name(SSL *ssl, const char *name);
-extern const char * X_SSL_get_cipher_name(const SSL *ssl);
+extern const char *X_SSL_get_cipher_name(const SSL *ssl);
+extern const char *X_SSL_get_version(const SSL *ssl);
 extern int X_SSL_session_reused(SSL *ssl);
 extern int X_SSL_new_index();