a5b7582f7fcd93b6

// 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{
		0x00e0,
		0x00e1,
		0x00e2,
		0x00e3,
		0x00e4,
		0x00e5,
		0x00e6,
		0x00e7,
		0x00e8,
		0x00e9,
		0x00ea,
		0x00eb,
		0x00ec,
		0x00ed,
		0x00ee,
		0x00ef,
		0x00f0,
		0x00f1,
		0x00f2,
		0x00f3,
		0x00f4,
		0x00f5,
		0x00f6,
		0x00f7,
		0x00f8,
		0x00f9,
		0x00fa,
		0x00fb,
		0x00fc,
		0x00fd,
		0x00fe,
		0x00ff,
	},
	CompressionMethods: []byte{
		0x00, // compressionNone
	},
	Extensions: []tls.TLSExtension{
code generation error: short sig_algs	},
}
tlsConn.ApplyPreset(&clientHelloSpec)
        
n, err = tlsConn.Write([]byte("Hello, World!"))
// or tlsConn.Handshake() for better control