ea51dee28d5dd636

// import tls "github.com/refraction-networking/utls"
tcpConn, err := net.Dial("tcp", "tlsfingerprint.io:443")
if err != nil {
	fmt.Printf("net.Dial() failed: %+v\n", err)
	return
}

config := tls.Config{ServerName: "tlsfingerprint.io"}
// This fingerprint includes feature(s), not fully supported by TLS.
// uTLS client with this fingerprint will only be able to to talk to servers,
// that also do not support those features. 
tlsConn := tls.UClient(tcpConn, &tlsConfig, tls.HelloCustom)
clientHelloSpec := tls.ClientHelloSpec {
	CipherSuites: []uint16{
		0x00a5,
		0x00a1,
		0x0069,
		0x0068,
		0x0037,
		0x0036,
		0x0086,
		0x0085,
		0x00a7,
		0x006d,
		0x003a,
		0x0089,
		tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
		tls.DISABLED_TLS_RSA_WITH_AES_256_CBC_SHA256,
		tls.TLS_RSA_WITH_AES_256_CBC_SHA,
		0x0084,
		0x00a4,
		0x00a0,
		0x003f,
		0x003e,
		0x0031,
		0x0030,
		0x0043,
		0x0042,
		0x00a6,
		0x006c,
		0x0034,
		0x0046,
		tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
		tls.TLS_RSA_WITH_AES_128_CBC_SHA256,
		tls.TLS_RSA_WITH_AES_128_CBC_SHA,
		0x0041,
		0x0010,
		0x000d,
		0x001b,
		tls.TLS_RSA_WITH_3DES_EDE_CBC_SHA,
		0x00ff,
	},
	CompressionMethods: []byte{
		0x00, // compressionNone
	},
	Extensions: []tls.TLSExtension{
code generation error: short curves	},
}
tlsConn.ApplyPreset(&clientHelloSpec)
        
n, err = tlsConn.Write([]byte("Hello, World!"))
// or tlsConn.Handshake() for better control