// 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.Client(tcpConn, &tlsConfig, utls.HelloCustom)
clientHelloSpec := tls.ClientHelloSpec {
CipherSuites: []uint16{
0xc087,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
0xc0ad,
0xc0af,
0xc08b,
tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
0xc081,
0x00a3,
0xc07d,
0x009f,
0xc09f,
0xc0a3,
0xc089,
0xc02e,
0xc08d,
0xc032,
0xc07b,
tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
0xc09d,
0xc0a1,
0xc083,
0x00a5,
0xc07f,
0x00a1,
0xc086,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
0xc0ac,
0xc0ae,
0xc073,
tls.DISABLED_TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
tls.TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,
0xc08a,
tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
0xc077,
tls.DISABLED_TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
0xc080,
0x00a2,
0x00c3,
0x006a,
0x0087,
0x0038,
0xc07c,
0x009e,
0xc09e,
0xc0a2,
0x00c4,
0x006b,
0x0088,
0x0039,
0xc088,
0xc02d,
0xc075,
0xc026,
0xc005,
0xc08c,
0xc031,
0xc079,
0xc02a,
0xc00f,
0xc07a,
tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
0xc09c,
0xc0a0,
0x00c0,
tls.DISABLED_TLS_RSA_WITH_AES_256_CBC_SHA256,
0x0084,
tls.TLS_RSA_WITH_AES_256_CBC_SHA,
0xc082,
0x00a4,
0x00c1,
0x0068,
0x0085,
0x0036,
0xc07e,
0x00a0,
0x00c2,
0x0069,
0x0086,
0x0037,
0xc072,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
tls.TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,
0xc076,
tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
tls.TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
0x00bd,
0x0040,
0x0044,
0x0032,
0x00be,
0x0067,
0x0045,
0x0033,
0xc074,
0xc025,
0xc004,
0xc078,
0xc029,
0xc00e,
0x00ba,
tls.TLS_RSA_WITH_AES_128_CBC_SHA256,
0x0041,
tls.TLS_RSA_WITH_AES_128_CBC_SHA,
0x0007,
0xff81,
0x00bb,
0x003e,
0x0042,
0x0030,
0x00bc,
0x003f,
0x0043,
0x0031,
0x00ff,
},
CompressionMethods: []byte{
0x00, // compressionNone
},
Extensions: []tls.TLSExtension{
&tls.SupportedCurvesExtension{[]tls.CurveID{
tls.CurveP521,
tls.CurveP384,
tls.CurveP256,
}},
&tls.SupportedPointsExtension{SupportedPoints: []byte{
0x00, // pointFormatUncompressed
}},
&tls.GenericExtension {id: 0x000f}, // WARNING: UNKNOWN EXTENSION, USE AT YOUR OWN RISK
&tls.GenericExtension {id: 0x0016}, // WARNING: UNKNOWN EXTENSION, USE AT YOUR OWN RISK
&tls.SignatureAlgorithmsExtension{SupportedSignatureAlgorithms: []SignatureScheme{
tls.ECDSAWithP521AndSHA512,
tls.PKCS1WithSHA512,
tls.ECDSAWithP384AndSHA384,
tls.PKCS1WithSHA384,
tls.ECDSAWithP256AndSHA256,
0x0402,
tls.PKCS1WithSHA256,
0x0303,
0x0302,
tls.ECDSAWithSHA1,
0x0202,
tls.PKCS1WithSHA1,
},},
&tls.UtlsPaddingExtension{GetPaddingLen: BoringPaddingStyle},
},
}
tlsConn.ApplyPreset(clientHelloSpec)
n, err = tlsConn.Write("Hello, World!")
// or tlsConn.Handshake() for better control