private void DataReceivedHandler(IntPtr ssl) { RemoteClient RmClient = null; wolfssl.DTLS_con con = wolfssl.get_dtls_fd(ssl); string IpPortStr = $"DTLS:{con.ep.Address.ToString()}:{con.ep.Port.ToString()}"; var RemoteEndPoint = new IPEndPoint(con.ep.Address, con.ep.Port); CilentConnectPrompt(IpPortStr, RemoteEndPoint, ssl); byte[] buff = new byte[2048]; while (true) { try { Console.WriteLine("Begin read message"); var recvd = wolfssl.read(ssl, buff, 2048); if (recvd <= 0) { throw new Exception("Error reading message"); } Console.WriteLine($"Read {recvd} bytes data"); ClientList.TryGetValue(IpPortStr, out RmClient); RmClient.ActiveTime = DateTime.Now; byte[] data = new byte[recvd]; Array.Copy(buff, data, recvd); if (iDataReceivedFDback != null) { Task unwait = Task.Run(() => iDataReceivedFDback(IpPortStr, data)); } } catch (Exception) { Disconnect(IpPortStr); return; } } }
public static void Main(string[] args) { IntPtr ctx; IntPtr ssl; /* These paths should be changed for use */ string fileCert = @"server-cert.pem"; string fileKey = @"server-key.pem"; StringBuilder dhparam = new StringBuilder("dh2048.pem"); StringBuilder buff = new StringBuilder(1024); StringBuilder reply = new StringBuilder("Hello, this is the wolfSSL C# wrapper"); //example of function used for setting logging wolfssl.SetLogging(standard_log); wolfssl.Init(); Console.WriteLine("Calling ctx Init from wolfSSL"); ctx = wolfssl.CTX_dtls_new(wolfssl.useDTLSv1_2_server()); if (ctx == IntPtr.Zero) { Console.WriteLine("Error creating ctx structure"); wolfssl.CTX_free(ctx); return; } Console.WriteLine("Finished init of ctx .... now load in cert and key"); if (!File.Exists(fileCert) || !File.Exists(fileKey)) { Console.WriteLine("Could not find cert or key file"); wolfssl.CTX_free(ctx); return; } if (wolfssl.CTX_use_certificate_file(ctx, fileCert, wolfssl.SSL_FILETYPE_PEM) != wolfssl.SUCCESS) { Console.WriteLine("Error setting cert file"); wolfssl.CTX_free(ctx); return; } if (wolfssl.CTX_use_PrivateKey_file(ctx, fileKey, wolfssl.SSL_FILETYPE_PEM) != wolfssl.SUCCESS) { Console.WriteLine("Error setting key file"); wolfssl.CTX_free(ctx); return; } short minDhKey = 128; wolfssl.CTX_SetMinDhKey_Sz(ctx, minDhKey); IPAddress ip = IPAddress.Parse("0.0.0.0"); UdpClient udp = new UdpClient(11111); IPEndPoint ep = new IPEndPoint(ip, 11111); Console.WriteLine("Started UDP and waiting for a connection"); ssl = wolfssl.new_ssl(ctx); if (ssl == IntPtr.Zero) { Console.WriteLine("Error creating ssl object"); wolfssl.CTX_free(ctx); return; } if (wolfssl.SetTmpDH_file(ssl, dhparam, wolfssl.SSL_FILETYPE_PEM) != wolfssl.SUCCESS) { Console.WriteLine("Error in setting dhparam"); Console.WriteLine(wolfssl.get_error(ssl)); udp.Close(); clean(ssl, ctx); return; } if (wolfssl.set_dtls_fd(ssl, udp, ep) != wolfssl.SUCCESS) { Console.WriteLine(wolfssl.get_error(ssl)); udp.Close(); clean(ssl, ctx); return; } if (wolfssl.accept(ssl) != wolfssl.SUCCESS) { Console.WriteLine(wolfssl.get_error(ssl)); udp.Close(); clean(ssl, ctx); return; } /* print out results of TLS/SSL accept */ Console.WriteLine("SSL version is " + wolfssl.get_version(ssl)); Console.WriteLine("SSL cipher suite is " + wolfssl.get_current_cipher(ssl)); /* get connection information and print ip - port */ wolfssl.DTLS_con con = wolfssl.get_dtls_fd(ssl); Console.Write("Connected to ip "); Console.Write(con.ep.Address.ToString()); Console.Write(" on port "); Console.WriteLine(con.ep.Port.ToString()); /* read information sent and send a reply */ if (wolfssl.read(ssl, buff, 1023) < 0) { Console.WriteLine("Error reading message"); Console.WriteLine(wolfssl.get_error(ssl)); udp.Close(); clean(ssl, ctx); return; } Console.WriteLine(buff); if (wolfssl.write(ssl, reply, reply.Length) != reply.Length) { Console.WriteLine("Error writing message"); Console.WriteLine(wolfssl.get_error(ssl)); udp.Close(); clean(ssl, ctx); return; } Console.WriteLine("At the end freeing stuff"); wolfssl.shutdown(ssl); udp.Close(); clean(ssl, ctx); }
public static void Main(string[] args) { IntPtr ctx; IntPtr ssl; wolfssl.loggingCb loggingCb = Log; wolfssl.SetLogging(loggingCb); wolfssl.psk_delegate psk_cb = new wolfssl.psk_delegate(my_psk_server_cb); byte[] buff = new byte[1024]; byte[] stubReply = new byte[] { 0xe1, 0x6f, 0x80, 0xff, 0xbe, 0xdc, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02 }; wolfssl.Init(); Console.WriteLine("Calling ctx Init from wolfSSL"); ctx = wolfssl.CTX_dtls_new(wolfssl.useDTLSv1_2_server()); if (ctx == IntPtr.Zero) { Console.WriteLine("Error creating ctx structure"); return; } Console.WriteLine("Finished init of ctx .... now load in cert and key"); /* Test psk use with DHE */ StringBuilder hint = new StringBuilder("PROJECT_76"); //Hardcoded hint in Fo76 if (wolfssl.CTX_use_psk_identity_hint(ctx, hint) != wolfssl.SUCCESS) { Console.WriteLine("Error setting hint"); wolfssl.CTX_free(ctx); return; } wolfssl.CTX_set_psk_server_callback(ctx, psk_cb); Console.Write("Setting cipher suite to "); StringBuilder set_cipher = new StringBuilder("TLS_PSK_WITH_AES_128_GCM_SHA256"); Console.WriteLine(set_cipher); if (wolfssl.CTX_set_cipher_list(ctx, set_cipher) != wolfssl.SUCCESS) { Console.WriteLine("Failed to set cipher suite"); wolfssl.CTX_free(ctx); return; } IPAddress ip = IPAddress.Parse("127.0.0.1"); UdpClient udp = new UdpClient(3001); IPEndPoint ep = new IPEndPoint(ip, 3001); Console.WriteLine("Started UDP and waiting for a connection"); ssl = wolfssl.new_ssl(ctx); if (ssl == IntPtr.Zero) { Console.WriteLine("Error creating ssl object"); udp.Close(); wolfssl.CTX_free(ctx); return; } if (wolfssl.set_dtls_fd(ssl, udp, ep) != wolfssl.SUCCESS) { Console.WriteLine(wolfssl.get_error(ssl)); udp.Close(); clean(ssl, ctx); return; } if (wolfssl.accept(ssl) != wolfssl.SUCCESS) { Console.WriteLine(wolfssl.get_error(ssl)); udp.Close(); clean(ssl, ctx); return; } /* print out results of TLS/SSL accept */ Console.WriteLine("SSL version is " + wolfssl.get_version(ssl)); Console.WriteLine("SSL cipher suite is " + wolfssl.get_current_cipher(ssl)); /* get connection information and print ip - port */ wolfssl.DTLS_con con = wolfssl.get_dtls_fd(ssl); Console.Write("Connected to ip "); Console.Write(con.ep.Address.ToString()); Console.Write(" on port "); Console.WriteLine(con.ep.Port.ToString()); /* read information sent and send a reply */ if (wolfssl.read(ssl, buff, 1023) < 0) { Console.WriteLine("Error reading message"); Console.WriteLine(wolfssl.get_error(ssl)); udp.Close(); clean(ssl, ctx); return; } Console.WriteLine(ByteArrayToString(buff)); if (wolfssl.write(ssl, stubReply, stubReply.Length) != stubReply.Length) { Console.WriteLine("Error writing message"); Console.WriteLine(wolfssl.get_error(ssl)); udp.Close(); clean(ssl, ctx); return; } Console.WriteLine("At the end freeing stuff"); wolfssl.shutdown(ssl); udp.Close(); clean(ssl, ctx); }