package main import ( "crypto/tls" "crypto/x509" "encoding/hex" "flag" "fmt" "io" "log" "net/http" "os" "time" ) type ZeroRTT_t int type PubKeyAlgo_t int // Bitset const ( ZeroRTT_None ZeroRTT_t = 0 ZeroRTT_Offer = 1 << 0 ZeroRTT_Accept = 1 << 1 ) const ( PubKeyRSA PubKeyAlgo_t = iota PubKeyECDSA ) type server struct { Address string ZeroRTT ZeroRTT_t PubKey PubKeyAlgo_t ClientAuthMethod tls.ClientAuthType } var tlsVersionToName = map[uint16]string{ tls.VersionTLS10: "1.0", tls.VersionTLS11: "1.1", tls.VersionTLS12: "1.2", tls.VersionTLS13: "1.3", tls.VersionTLS13Draft18: "1.3 (draft 18)", tls.VersionTLS13Draft21: "1.3 (draft 21)", tls.VersionTLS13Draft22: "1.3 (draft 22)", tls.VersionTLS13Draft23: "1.3 (draft 23)", tls.VersionTLS13Draft28: "1.3 (draft 28)", } func NewServer() *server { s := new(server) s.ClientAuthMethod = tls.NoClientCert s.ZeroRTT = ZeroRTT_None s.Address = "0.0.0.1:443" return s } func (s *server) start() { cert, err := tls.X509KeyPair([]byte(ecdsaCert), []byte(ecdsaKey)) if s.PubKey == PubKeyRSA { cert, err = tls.X509KeyPair([]byte(rsaCert), []byte(rsaKey)) } if err != nil { log.Fatal(err) } var Max0RTTDataSize uint32 if (s.ZeroRTT & ZeroRTT_Offer) == ZeroRTT_Offer { Max0RTTDataSize = 100 * 1024 } var keyLogWriter io.Writer if keyLogFile := os.Getenv("SSLKEYLOGFILE"); keyLogFile != "" { keyLogWriter, err = os.OpenFile(keyLogFile, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0600) if err != nil { log.Fatalf("Cannot open keylog file: %v", err) } log.Println("Enabled keylog") } clientCAs := x509.NewCertPool() clientCAs.AppendCertsFromPEM([]byte(rsaCa_client)) httpServer := &http.Server{ Addr: s.Address, TLSConfig: &tls.Config{ Certificates: []tls.Certificate{cert}, Max0RTTDataSize: Max0RTTDataSize, Accept0RTTData: (s.ZeroRTT & ZeroRTT_Accept) == ZeroRTT_Accept, KeyLogWriter: keyLogWriter, GetConfigForClient: func(*tls.ClientHelloInfo) (*tls.Config, error) { // If we send the first flight too fast, NSS sends empty early data. time.Sleep(500 * time.Millisecond) return nil, nil }, MaxVersion: tls.VersionTLS13, ClientAuth: s.ClientAuthMethod, ClientCAs: clientCAs, }, } log.Fatal(httpServer.ListenAndServeTLS("", "")) } func main() { s := NewServer() arg_addr := flag.String("b", "0.0.0.0:443", "Address:port used for binding") arg_palg := flag.String("palg", "rsa", "Public algorithm to use: rsa or ecdsa") arg_zerortt := flag.String("rtt0", "n", `0-RTT, accepts following values [n: None, a: Accept, o: Offer, oa: Offer and Accept]`) arg_confirm := flag.Bool("rtt0ack", false, "0-RTT confirm") arg_clientauth := flag.Bool("cliauth", false, "Performs client authentication (RequireAndVerifyClientCert used)") flag.Parse() s.Address = *arg_addr if *arg_palg == "ecdsa" { s.PubKey = PubKeyECDSA } if *arg_zerortt == "a" { s.ZeroRTT = ZeroRTT_Accept } else if *arg_zerortt == "o" { s.ZeroRTT = ZeroRTT_Offer } else if *arg_zerortt == "oa" { s.ZeroRTT = ZeroRTT_Offer | ZeroRTT_Accept } if *arg_clientauth { s.ClientAuthMethod = tls.RequireAndVerifyClientCert } http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { tlsConn := r.Context().Value(http.TLSConnContextKey).(*tls.Conn) with0RTT := "" if !tlsConn.ConnectionState().HandshakeConfirmed { with0RTT = " [0-RTT]" } if *arg_confirm || r.URL.Path == "/confirm" { if err := tlsConn.ConfirmHandshake(); err != nil { log.Fatal(err) } if with0RTT != "" { with0RTT = " [0-RTT confirmed]" } if !tlsConn.ConnectionState().HandshakeConfirmed { panic("HandshakeConfirmed false after ConfirmHandshake") } } resumed := "" if r.TLS.DidResume { resumed = " [resumed]" } http2 := "" if r.ProtoMajor == 2 { http2 = " [HTTP/2]" } fmt.Fprintf(w, "

Hello TLS %s%s%s%s _o/\n", tlsVersionToName[r.TLS.Version], resumed, with0RTT, http2) }) http.HandleFunc("/ch", func(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "text/plain") fmt.Fprintf(w, "Client Hello packet (%d bytes):\n%s", len(r.TLS.ClientHello), hex.Dump(r.TLS.ClientHello)) }) s.start() } const ( rsaKey = `-----BEGIN RSA PRIVATE KEY----- MIIEpAIBAAKCAQEA1DHcIM3SThFqy8nAkPQFX0E7ph8jqh8EATXryjKHGuVjR3Xh OQ0BSPoJxyfdg/VEwevFrtmZAfz0WCbxvP2SVCmf7oobg4V2KPSo3nNt9vlBFUne RtIyHRQ8YRnGSWaRHzJbX6ffltnG2aD+8qUfk161rdZgxBA9G0Ga47IkwQhT2Hqu H3dW2Uu4W2WMyt6gX/tdyEAV57MOPcoceknr7Nb2kfiuDPR7h6wFrW3I6eoj8oX2 SkIOuVNt1Z31BAUcPJDUjqopI0o9tolM/7X13M8dEY0OJQVr7FQYDF9JeSYeEMyb wizjBaHDm48mSghP1o5UssQBbNNC83btXCjiLQIDAQABAoIBACzvGgRAUYaCnbDl 2kdXxUN0luMIuQ6vXrO67WF17bI+XRWm2riwDlObzzJDON9Wsua1vLjYD1SickOw i4RP1grIfbuPt1/UhT8LAC+LFgA0rBmL+OvaWw5ZWKffQ2QLujN3AG5zKB/Tog43 z4UmfldAuQxE11zta2M4M0qAUNQnQj1oiuI8RUdG0VvvLw8Htdi1ogH0CI5R669z NjHt+JV+2gzKx6EX0s8mQL3yXGkC2xXItRbFclyCMJEhPS7QbBu+tru35N6WpzAq BCl2Q7LQogvSA6MXuMOx6CyuExVfgmhbfeoheLE8gmXwl0Y37n/g6ZBZFAtpCjcs UckPv0ECgYEA1orl7RwgIsZljMap6vWtMGoRIHKmT91DGpMmkh4suZe+yAk85maU 49Vd+8ZfIN41AH37yrsGOcPHgz5o5QufELpoub6DCsQ7u9F1vQp55cp+qyBWzAgz b/xUuVnIyv3kLan3fpk7ZGCBXFBpLG0QXMFOHtda3Mlk5SmuoEYaYRkCgYEA/TLR u4neKqyqwsqMuRJGC1iKFVmfCjZeNMtPNbTWpdqez/vvT8APnEpIumUGt8YROLGZ 8biUr5/ViOkmaP3wmQbO9m2/cE01lMTYv75w1cw2KVQe6kAHJkOx+JEx9xg53RJ/ QlFtG5MQUy2599Gxp8BMGaXLH5yo4qwvNvY6CDUCgYEArxr7AwX7rKZlZ/sV4HHY gzVu+R7aY0DibiRATO5X7rrNuhLgI+UCDNqvNLn6FqeGdvpcsmDneeozQwmDL77G ey7KHyBBcF4tquQQxtRwHX+i1yUz8p+W7AX1WLrRSezjeenJ2QhUE1849hGjZeE2 g546lq2Kub2enfPhVWsiSLECgYEA72T5QCPeVuLioUH5Q5Kvf1K7W+xcnr9A2xHP Vqwgtre5qFQ/tFuXZuIlWXbjnyY6aiwhrZYjntm0f7pRgrt2nHj/fafOdVPK8Voc xU4+SSbHntPWVw0qtVcUEjzVzRauvwMaJ43tZ0DpEnwNdO5i1oTObwF+x+jLFWZP TdwIinECgYBzjZeCxxOMk5SlPpTsLUtgC+q3m1AavXhUVNEPP2gKMOIPTETPbhbG LBxB2vVbJiS3J7itQy8gceT89O0vSEZnaTPXiM/Ws1QbkBJ8yW7KI7X4WuzN4Imq /cLBRXLb8R328U27YyQFNGMjr2tX/+vx5FulJjSloWMRNuFWUngv7w== -----END RSA PRIVATE KEY-----` rsaCert = `-----BEGIN CERTIFICATE----- MIIC+jCCAeKgAwIBAgIRANBDimJ/ww2tz77qcYIhuZowDQYJKoZIhvcNAQELBQAw EjEQMA4GA1UEChMHQWNtZSBDbzAeFw0xNjA5MjQxNzI5MTlaFw0yNjA5MjIxNzI5 MTlaMBIxEDAOBgNVBAoTB0FjbWUgQ28wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAw ggEKAoIBAQDUMdwgzdJOEWrLycCQ9AVfQTumHyOqHwQBNevKMoca5WNHdeE5DQFI +gnHJ92D9UTB68Wu2ZkB/PRYJvG8/ZJUKZ/uihuDhXYo9Kjec232+UEVSd5G0jId FDxhGcZJZpEfMltfp9+W2cbZoP7ypR+TXrWt1mDEED0bQZrjsiTBCFPYeq4fd1bZ S7hbZYzK3qBf+13IQBXnsw49yhx6Sevs1vaR+K4M9HuHrAWtbcjp6iPyhfZKQg65 U23VnfUEBRw8kNSOqikjSj22iUz/tfXczx0RjQ4lBWvsVBgMX0l5Jh4QzJvCLOMF ocObjyZKCE/WjlSyxAFs00Lzdu1cKOItAgMBAAGjSzBJMA4GA1UdDwEB/wQEAwIF oDATBgNVHSUEDDAKBggrBgEFBQcDATAMBgNVHRMBAf8EAjAAMBQGA1UdEQQNMAuC CWxvY2FsaG9zdDANBgkqhkiG9w0BAQsFAAOCAQEAygPV4enmvwSuMd1JarxOXpOK Z4Nsk7EKlfCPgzxQUOkFdLIr5ZG1kUkQt/omzTmoIWjLAsoYzT0ZCPOrioczKsWj MceFUIkT0w+eIl+8DzauPy34o8rjcApglF165UG3iphlpI+jdPzv5TBarUAbwsFb ClMLEiNJQ0OMxAIaRtb2RehD4q3OWlpWf6joJ36PRBqL8T5+f2x6Tg3c64UR+QPX 98UcCQHHdEhm7y2z5Z2Wt0B48tZ+UAxDEoEwMghNyw7wUD79IRlXGYypBnXaMuLX 46aGxbsSQ7Rfg62Co3JG7vo+eJd0AoZHrtFUnfM8V70IFzMBZnSwRslHRJe56Q== -----END CERTIFICATE-----` rsaCa_client = `-----BEGIN CERTIFICATE----- MIIFYDCCA0igAwIBAgIJAPpBgIvtQb1EMA0GCSqGSIb3DQEBCwUAMEUxCzAJBgNV BAYTAkFVMRMwEQYDVQQIDApTb21lLVN0YXRlMSEwHwYDVQQKDBhJbnRlcm5ldCBX aWRnaXRzIFB0eSBMdGQwHhcNMTgwMjEzMjAxNjA3WhcNMTkwMjEzMjAxNjA3WjBF MQswCQYDVQQGEwJBVTETMBEGA1UECAwKU29tZS1TdGF0ZTEhMB8GA1UECgwYSW50 ZXJuZXQgV2lkZ2l0cyBQdHkgTHRkMIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIIC CgKCAgEAr4xgdmB4DaEh8zRFmg/1ZxYhQZMUP0iQX/Y8nDWxNlcd42p3TgpY1biz jrq58ln9Om4U/GAn2RmtBAynSBXIlR5oVa44JeMM8Ka8R/dMKyHpF0Nj2EJB9unb TC33PfzOlnKQxATwevnnhI6tGluWmwvxXUi7WnX0di+nQg9HrIVom3KrmRr2/41y g497ccYUuNnKE6sewGdGzw045oWZpMDA2Us+MFo1IywOurjaM9bueRhPTcIiQ8RE h7qb+FRwfxaj9ynZA2PCM7WMSSWCiZJV0uj/pshYF2lvtJcJef4dhwnsYBpc+mgx 2q9qcUBeo3ZHbi1/PRqjwSmcW3yY5cQRbpYp6xFmgmX3oHQkVXS0UlpNVZ+morcS HEpaK8b76fCFcL5yFsAJkPPfny1IKU+CfaVq60dM/mxbEW6J4mZT/uAiqrCilMC+ FyiATCZur8Ks7p47eZy700DllLod7gWTiuZTgHeQFVoX+jxbCZKlFn5Xspu8ALoK Mla/q83mICRVy3+eMUsD7DNvoWYpCAYy/oMk0VWfrQ48JkCGbBW2PW/dU2nmqVhY /11rurkr+1TUvYodnajANtXvUjW1DPOLb4dES4Qc4b7Fw8eFXrARhl5mXiL5HFKR /VnRshiJ+QwTVkxl+KkZHEm/WS8QD+Zd8leAxh9MCoaU/XrBUBkCAwEAAaNTMFEw HQYDVR0OBBYEFKUinuD1xRvcNd2Wti/PnBJp7On1MB8GA1UdIwQYMBaAFKUinuD1 xRvcNd2Wti/PnBJp7On1MA8GA1UdEwEB/wQFMAMBAf8wDQYJKoZIhvcNAQELBQAD ggIBAJdJrNBftqkTs2HyuJ3x5RIsTxYh85hJYwNOdFLyzVG6HER9jRCnvmNTjG0O I5wz5hQvDpwXs4BCCXHQZrTLAi3BEjq3AjrmR/XeGHulbWh3eh8LVu7MiLRgt+Ys GnL2IaERrbkje24nCCMNPbI3fGDQEhTIYmmX8RJp+5BOJgCycKk6pFgfrjJv2C+d 78pcjlYII6M4vPnr/a08M49Bq6b5ADvIfe5G2KrUvD/+vwoAwv6d/daymHCQ2rY5 kmdVk9VUp3Q4uKoeej4ENJSAUNTV7oTu346oc7q9sJffB5OltqbrE7ichak7lL+v EjArZHElAhKNFXRZViCMvGDs+7JztqbsfT8Xb6Z27e+WyudB2bOUGm3hKuTIl06D bA7yUskwEhmkd1CJqO5RLEJjKitOqe6Ye0/GsmPQNDK8GvyXTyGQK5OqBuzEexF0 mlPoIhpSVH3K9SkRTTHvvcbdYlaQLi6gKq2uhbk4PnS2nfBtXqYIy9mxcgBJzLiB /ydfLcf3GClwgvO1JHp6qAl4CO7oe8jqHpoGuznwi1aqkTyNkQWh0OXq3MS+dyqB 2yXFCFIeKCx18TE1OtuTD3ppBDjpyd0o/a6kYR3FDmdks/J33bGwLsLH3lbN6VjF PNfNkaE1tfkpSGYsuT1DPxX8aAT4JLUfZ1Si6iO+E0Sj9LXA -----END CERTIFICATE-----` ecdsaCert = `-----BEGIN CERTIFICATE----- MIIBbTCCAROgAwIBAgIQZCsHZcs5ZkzV+zC2E6j5RzAKBggqhkjOPQQDAjASMRAw DgYDVQQKEwdBY21lIENvMB4XDTE2MDkyNDE3NTE1OFoXDTI2MDkyMjE3NTE1OFow EjEQMA4GA1UEChMHQWNtZSBDbzBZMBMGByqGSM49AgEGCCqGSM49AwEHA0IABDTO B3IyzjYfKCp2HWy+P3QHxhdBT4AUGYgwTiSEj5phumPIahFNcOSWptN0UzlZvJdN MMjVmrFYK/FjF4abkNKjSzBJMA4GA1UdDwEB/wQEAwIFoDATBgNVHSUEDDAKBggr BgEFBQcDATAMBgNVHRMBAf8EAjAAMBQGA1UdEQQNMAuCCWxvY2FsaG9zdDAKBggq hkjOPQQDAgNIADBFAiEAp9W157PM1IadPBc33Cbj7vaFvp+rXs/hSuMCzP8pgV8C IHCswo1qiC0ZjQmWsBlmz5Zbp9rOorIzBYmGRhRdNs3j -----END CERTIFICATE-----` ecdsaKey = `-----BEGIN EC PRIVATE KEY----- MHcCAQEEIFdhO7IW5UIwpB1e2Vunm9QyKvUHWcVwGfLjhpOajuR7oAoGCCqGSM49 AwEHoUQDQgAENM4HcjLONh8oKnYdbL4/dAfGF0FPgBQZiDBOJISPmmG6Y8hqEU1w 5Jam03RTOVm8l00wyNWasVgr8WMXhpuQ0g== -----END EC PRIVATE KEY-----` )