857cf9371dde63a6

// 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{
		0x00e8,
		0x00e7,
		0x00e6,
		0x00e5,
		0x0083,
		0x0082,
		0x0081,
		0x0080,
		0x002b,
		0x002a,
		0x0029,
		0x0028,
		0x0027,
		0x0026,
		0x0025,
		0x0024,
		0x0023,
		0x0022,
		0x0021,
		0x0020,
		0x001f,
		0x001e,
		0x001d,
		0x001c,
		0x00ff,
	},
	CompressionMethods: []byte{
		0x00, // compressionNone
		0x01
	},
	Extensions: []tls.TLSExtension{
code generation error: short curves	},
}
tlsConn.ApplyPreset(&clientHelloSpec)
        
n, err = tlsConn.Write([]byte("Hello, World!"))
// or tlsConn.Handshake() for better control