d72dbd44f45f4e5b

// 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{
		tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
		tls.DISABLED_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
		0xc04c,
		0xc060,
		0xc04d,
		0xc061,
		0xc076,
		0xc08a,
		0xc077,
		0xc08b,
		tls.TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
		tls.OLD_TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
		0xc010,
		tls.TLS_ECDHE_RSA_WITH_RC4_128_SHA,
		0xc003,
		0x004a,
		0xc004,
		0x004b,
		0xc025,
		0xc02d,
		0xc005,
		0x004c,
		0xc026,
		0xc02e,
		0xc04a,
		0xc05e,
		0xc04b,
		0xc05f,
		0xc074,
		0xc088,
		0xc075,
		0xc089,
		0x0049,
		0xc001,
		0x0047,
		0xc002,
		0x0048,
		0x004e,
		0x004d,
		0xc00d,
		0xc00e,
		0xc029,
		0xc031,
		0xc00f,
		0xc02a,
		0xc032,
		0xc04e,
		0xc062,
		0xc04f,
		0xc063,
		0xc078,
		0xc08c,
		0xc079,
		0xc08d,
		0xc00b,
		0xc00c,
		0x005b,
		0x005c,
		0x0057,
		0xc017,
		0x005a,
		0xc018,
		0xc019,
	},
	CompressionMethods: []byte{
		0x00, // compressionNone
	},
	Extensions: []tls.TLSExtension{
		&tls.SupportedPointsExtension{SupportedPoints: []byte{
			0x00, // pointFormatUncompressed
		}},
		&tls.SupportedCurvesExtension{[]tls.CurveID{
			tls.CurveP256,
			tls.CurveP384,
			tls.CurveP521,
			tls.X25519,
			0x0100,
		}},
		&tls.SignatureAlgorithmsExtension{SupportedSignatureAlgorithms: []tls.SignatureScheme{
			0x0101,
			tls.PKCS1WithSHA1,
			0x0301,
			tls.PKCS1WithSHA256,
			0x0402,
			tls.ECDSAWithP256AndSHA256,
			0x0407,
			0x0408,
			tls.PKCS1WithSHA512,
			0x0602,
			tls.ECDSAWithP521AndSHA512,
			0x0607,
			0x0608,
		},},
	},
}
tlsConn.ApplyPreset(&clientHelloSpec)
        
n, err = tlsConn.Write([]byte("Hello, World!"))
// or tlsConn.Handshake() for better control