87867ce35080bc9b

// 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{
		0xdf7d,
		0x9e04,
		0x4b6e,
		0x73e9,
		0x3406,
		0x9c06,
		0xef48,
		0x59ff,
		0x765f,
		0xdf5c,
		0x66d1,
		0x0899,
		0x7802,
		0x04c6,
		0x6a7b,
		0xa058,
		0x016e,
		0x007a,
		0xe8e5,
		0xa682,
		0x6792,
		0x57d5,
	},
	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