/// <summary>
/// Constructor for creating the web server
/// Example: HttpWebServer webServer = new HttpWebServer("SSID", "password", -4);
/// </summary>
public HttpWebServer(string SSID, string Password, Double TimeOffSet = -5)
{
bool success;
CancellationTokenSource cs = new(60000);
success = NetworkHelper.ConnectWifiDhcp(SSID, Password, setDateTime: true, token: cs.Token);
// Initialize Socket class
socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
//Request and bind to an IP from DHCP server
socket.Bind(new IPEndPoint(IPAddress.Any, 80));
Debug.WriteLine("IP " + NetworkInterface.GetAllNetworkInterfaces()[0].IPv4Address);
String macString = BitConverter.ToString(NetworkInterface.GetAllNetworkInterfaces()[0].PhysicalAddress);
Debug.WriteLine("Mac " + macString);
// Start listen for web requests
socket.Listen(10);
// SMTP connects automatically to get time
Rtc.SetSystemTime(DateTime.UtcNow.AddHours(TimeOffSet));
Debug.WriteLine("System time is:" + DateTime.UtcNow.ToString());
// Create and start a thead for listening for server requests
Thread tListenforRequest = new Thread(ListenForRequest);
tListenforRequest.Start();
}
// This method is run when the mainboard is powered up or reset.
public static void Main()
{
// Use Trace to show messages in Visual Studio's "Output" window during debugging.
Trace("Program Started");
telemetryTopic = String.Format("devices/{0}/messages/events/", deviceID);
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if HAS_WIFI
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
Thread.Sleep(3000); //used to reliably allow redeployment in VS2019
DoMqttStuff();
Thread.Sleep(Timeout.Infinite);
}
public static void Main()
{
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if BUILD_FOR_ESP32
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
// setup user button
_userButton = GpioController.GetDefault().OpenPin(0);
_userButton.SetDriveMode(GpioPinDriveMode.Input);
_userButton.ValueChanged += UserButton_ValueChanged;
/////////////////////////////////////////////////////////////////////////////////////
////add certificate in PEM format(as a string in the app). This was taken from Azure's sample at https://github.com/Azure/azure-iot-sdk-c/blob/master/certs/certs.c
/// chis cert should be used when connecting to Azure IoT on the Azure Cloud available globally. Additional certs can be found in the link above
X509Certificate rootCACert = new X509Certificate(azurePEMCertBaltimore);
/////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////
/// enter your Shared Access Signature. You can create this using the Azure IOT Explorer under "Device Identity" format is
/// "SharedAccessSignature sr=<iotHubName>.azure-devices.net%2Fdevices%2F<deviceName>&sig=<signature>"
/// See "Readme" for more details
string sas = "<Enter SAS Token Here See Read Me for example>";
///////////////////////////////////////////////////////////////////////////////////
//strip the device iotHubName from the SAS token
var from = sas.IndexOf('=') + 1;
var to = sas.IndexOf(".");
string iotHubName = sas.Substring(from, to - from);
// strip the deviceName from the SAS
to = sas.IndexOf("&");
from = sas.IndexOf("%2Fdevices%2F") + 13;
string deviceName = sas.Substring(from, to - from);
//Create the url for the azure iot hub
string url = $"https://{iotHubName}.azure-devices.net/devices/{deviceName}/messages/devicebound?api-version=2020-03-13";
Debug.WriteLine($"Your IOT Hub Name: {iotHubName} and your Device Name: {deviceName}");
Debug.WriteLine($"Performing Http request to: {url}");
WorkerThread(url, sas, rootCACert);
// A custom class that we will convert to Json and pass as the body of the post
Thread.Sleep(Timeout.Infinite);
}
public static void Main()
{
//Setup I2C pins for ESP32 board
Configuration.SetPinFunction(21, DeviceFunction.I2C1_DATA);
Configuration.SetPinFunction(22, DeviceFunction.I2C1_CLOCK);
CancellationTokenSource cs = new(sleepTimeMinutes);
var success = NetworkHelper.ConnectWifiDhcp(wifiSSID, wifiApPASSWORD, setDateTime: true, token: cs.Token);
if (!success)
{
Debug.WriteLine($"Can't connect to wifi: {NetworkHelper.ConnectionError.Error}");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"NetworkHelper.ConnectionError.Exception");
}
GoToSleep();
}
// Reset the time counter if the previous date was not valid
if (allupOperation.Year < 2018)
{
allupOperation = DateTime.UtcNow;
}
Debug.WriteLine($"Date and time is now {DateTime.UtcNow}");
const int busId = 1;
//If SDO pin connected to the 3V,Bmp280.DefaultI2cAddress if SDO pin connected to the GND then Bmp280.SecondaryI2cAddress
I2cConnectionSettings i2cSettings = new(busId, Bmp280.SecondaryI2cAddress);
I2cDevice i2cDevice = I2cDevice.Create(i2cSettings);
bme280Sensor = new Bme280(i2cDevice);
if (!SetupThingsBoard())
{
Debug.WriteLine("Error connecting to the server");
return;
}
// launch telemetry thread
Thread telemetryThread = new Thread(new ThreadStart(TelemetryLoop));
telemetryThread.Start();
Debug.WriteLine("Connected to the server.");
while (true)
{
Thread.Sleep(10000);
}
}
public static void Main()
{
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if HAS_WIFI
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
// setup user button
// F769I-DISCO -> USER_BUTTON is @ PA0 -> (0 * 16) + 0 = 0
_userButton = GpioController.GetDefault().OpenPin(3 * 16 + 7);
_userButton.SetDriveMode(GpioPinDriveMode.Input);
_userButton.ValueChanged += UserButton_ValueChanged;
// setup AMQP
// set trace level
AmqpTrace.TraceLevel = TraceLevel.Frame | TraceLevel.Information;
// enable trace
AmqpTrace.TraceListener = WriteTrace;
/////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////
// *** CHECK README for details on this configuration **** //
Connection.DisableServerCertValidation = false;
/////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////
// launch worker thread
new Thread(WorkerThread).Start();
Thread.Sleep(Timeout.Infinite);
}
private static bool ConnectToWifi()
{
Debug.WriteLine("Program Started, connecting to WiFi.");
// As we are using TLS, we need a valid date & time
// We will wait maximum 1 minute to get connected and have a valid date
var success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: new CancellationTokenSource(WifiSleepTime).Token);
if (!success)
{
Debug.WriteLine($"Can't connect to wifi: {NetworkHelper.ConnectionError.Error}");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"NetworkHelper.ConnectionError.Exception");
}
}
Debug.WriteLine($"Date and time is now {DateTime.UtcNow}");
return(success);
}
public static void Main()
{
Debug.WriteLine("Hello from a webserver!");
try
{
int connectRetry = 0;
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if HAS_WIFI
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
// Instantiate a new web server on port 80.
using (WebServer server = new WebServer(80, HttpProtocol.Http, new Type[] { typeof(ControllerGpio) }))
{
// Start the server.
server.Start();
Thread.Sleep(Timeout.Infinite);
}
}
catch (Exception ex)
{
Debug.WriteLine($"{ex}");
}
}
public static void Main()
{
X509Certificate _myWebServerCertificate509 = new X509Certificate2(_myWebServerCrt, _myWebServerPrivateKey, "");
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if BUILD_FOR_ESP32
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
// setup HTTP response
string responseString = "<HTML><BODY>Hello world! This is nanoFramework.</BODY></HTML>";
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(responseString);
// Create a listener.
string prefix = "https";
int port = prefix == "http" ? 80 : 443;
Debug.WriteLine("* Creating Http Listener: " + prefix + " on port " + port);
HttpListener listener = new HttpListener(prefix, port);
// assign server certificate
listener.HttpsCert = _myWebServerCertificate509;
listener.SslProtocols = System.Net.Security.SslProtocols.Tls | System.Net.Security.SslProtocols.Tls11 | System.Net.Security.SslProtocols.Tls12;
Debug.WriteLine($"Listening for HTTP requests @ {NetworkInterface.GetAllNetworkInterfaces()[0].IPv4Address}:{port} ...");
listener.Start();
while (true)
{
try
{
// now wait on context for a connection
HttpListenerContext context = listener.GetContext();
// Get the response stream and write the response content to it
context.Response.ContentLength64 = buffer.Length;
context.Response.OutputStream.Write(buffer, 0, buffer.Length);
// output stream must be closed
context.Response.Close();
// context must be closed
context.Close();
}
catch (Exception ex)
{
Debug.WriteLine("* Error getting context: " + ex.Message + "\r\nSack = " + ex.StackTrace);
}
}
}
public static void Main()
{
var success = NetworkHelper.ConnectWifiDhcp(Ssid, Paswword, token: new CancellationTokenSource(60000).Token);
if (!success)
{
Debug.WriteLine("Can't connect to wifi");
return;
}
Debug.WriteLine("Hello from nanoFramework MQTT 5.0 real v5.0 server test!");
// You can change the server to test
// Mosquitto supports MQTT5.0 but send some of the messages as v3.1.1 (forgetting the specific MQTT v5.0 property size)
// MqttClient mqtt = new MqttClient("test.mosquitto.org", 8883, true, new X509Certificate(CertMosquitto), null, MqttSslProtocols.TLSv1_2);
// EMQX fully supports v5.0 and sends properly the v.5 property size
// MqttClient mqtt = new MqttClient("broker.emqx.io", 8883, true, new X509Certificate(CertEMQX), null, MqttSslProtocols.TLSv1_2);
// Azure IoT Edge
MqttClient mqtt = new MqttClient(IoTHub, 8883, true, new X509Certificate(CertAzure), null, MqttSslProtocols.TLSv1_2);
mqtt.ProtocolVersion = MqttProtocolVersion.Version_5;
mqtt.ConnectionOpened += MqttConnectionOpened;
mqtt.ConnectionClosed += MqttConnectionClosed;
mqtt.MqttMsgPublished += MqttMsgPublished;
mqtt.MqttMsgPublishReceived += MqttMqttMsgPublishReceived;
mqtt.MqttMsgSubscribed += MqttMqttMsgSubscribed;
mqtt.MqttMsgUnsubscribed += MqttMqttMsgUnsubscribed;
mqtt.ConnectionClosedRequest += MqttConnectionClosedRequest;
mqtt.RequestResponseInformation = true;
// Seems like no need of password or user name for Mosquitto or EMQX
// var ret = mqtt.Connect("nanoTestDevice", true);
// Need device ID and Sas token for Azure
var at = DateTime.UtcNow;
var atString = (at.ToUnixTimeSeconds() * 1000).ToString();
var expiry = at.AddMinutes(40);
var expiryString = (expiry.ToUnixTimeSeconds() * 1000).ToString();
string toSign = $"{IoTHub}\n{DeviceID}\n\n{atString}\n{expiryString}\n";
var hmac = new HMACSHA256(Convert.FromBase64String(Sas));
var sas = hmac.ComputeHash(Encoding.UTF8.GetBytes(toSign));
mqtt.AuthenticationMethod = "SAS";
mqtt.AuthenticationData = sas;
mqtt.UserProperties.Add(new UserProperty("sas-at", atString));
mqtt.UserProperties.Add(new UserProperty("sas-expiry", expiryString));
mqtt.UserProperties.Add(new UserProperty("api-version", "2020-10-01-preview"));
mqtt.UserProperties.Add(new UserProperty("host", IoTHub));
var ret = mqtt.Connect(DeviceID,
null,
null,
false,
MqttQoSLevel.AtLeastOnce,
false, null,
null,
true,
60
);
if (ret != MqttReasonCode.Success)
{
Debug.WriteLine($"ERROR connecting: {ret}");
mqtt.Disconnect();
return;
}
// 30 seconds max waiting
var token = new CancellationTokenSource(30000).Token;
while (!mqtt.IsConnected && !token.IsCancellationRequested)
{
Thread.Sleep(200);
}
if (token.IsCancellationRequested)
{
Debug.WriteLine($"Too long time to connect, connection closed");
mqtt.Disconnect();
return;
}
// Uncomment to get flooded with topics
// mqtt.Subscribe(new string[] { "$SYS/#" }, new MqttQoSLevel[] { MqttQoSLevel.AtLeastOnce });
// mqtt.Subscribe(new string[] { "nanoTestDevice/#" }, new MqttQoSLevel[] { MqttQoSLevel.AtLeastOnce });
// For Azure IoT, if you have a subscription that allow cloud to device, you can subscribe to it:
// mqtt.Subscribe(new string[] { "$iothub/commands" }, new MqttQoSLevel[] { MqttQoSLevel.AtLeastOnce });
//mqtt.UserProperties.Add(new UserProperty("my beautiful", "property"));
for (int i = 0; (i < 100) && mqtt.IsConnected; i++)
{
// For normal servers
// var number = mqtt.Publish("nanoTestDevice/publish", Encoding.UTF8.GetBytes($"{{\"Number\":{i}}}"), MqttQoSLevel.ExactlyOnce, false);
// For Azure IoT
var number = mqtt.Publish("$iothub/telemetry", Encoding.UTF8.GetBytes($"{{\"Number\":{i}}}"), MqttQoSLevel.AtLeastOnce, false);
Debug.WriteLine($"Posted message: {number}");
Thread.Sleep(10000);
}
if (mqtt.IsConnected)
{
mqtt.Disconnect();
}
Thread.Sleep(Timeout.Infinite);
}
public static void Main()
{
Debug.WriteLine("Hello from a webserver!");
try
{
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if HAS_WIFI
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
#if HAS_STORAGE
_storage = KnownFolders.RemovableDevices.GetFolders()[0];
#endif
_controller = new GpioController();
#if USE_TLS
X509Certificate _myWebServerCertificate509 = new X509Certificate2(_myWebServerCrt, _myWebServerPrivateKey, "1234");
// Instantiate a new web server on port 443.
using (WebServer server = new WebServer(443, HttpProtocol.Https, new Type[] { typeof(ControllerPerson), typeof(ControllerTest), typeof(ControllerAuth) }))
#else
// Instantiate a new web server on port 80.
using (WebServer server = new WebServer(80, HttpProtocol.Http, new Type[] { typeof(ControllerPerson), typeof(ControllerTest), typeof(ControllerAuth) }))
#endif
{
// To test authentication with various scenarios
server.ApiKey = _securityKey;
server.Credential = new NetworkCredential("user", "password");
// Add a handler for commands that are received by the server.
server.CommandReceived += ServerCommandReceived;
#if USE_TLS
server.HttpsCert = _myWebServerCertificate509;
server.SslProtocols = System.Net.Security.SslProtocols.Tls11 | System.Net.Security.SslProtocols.Tls12;
#endif
// Start the server.
server.Start();
Thread.Sleep(Timeout.Infinite);
}
}
catch (Exception ex)
{
Debug.WriteLine($"{ex}");
}
}
public static void Main()
{
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if BUILD_FOR_ESP32
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
/////////////////////////////////////////////////////////////////////////////////////
// add certificate in PEM format (as a string in the app)
X509Certificate letsEncryptCACert = new X509Certificate(_dstRootCAX3);
/////////////////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////////////////
// add certificate in CER format (as a managed resource)
X509Certificate digiCertGlobalRootCACert = new X509Certificate(Resources.GetBytes(Resources.BinaryResources.DigiCertGlobalRootCA));
/////////////////////////////////////////////////////////////////////////////////////
// get host entry for How's my SSL test site
//IPHostEntry hostEntry = Dns.GetHostEntry("www.howsmyssl.com");
// get host entry for Global Root test site
IPHostEntry hostEntry = Dns.GetHostEntry("https://global-root-ca.chain-demos.digicert.com");
// need an IPEndPoint from that one above
IPEndPoint ep = new IPEndPoint(hostEntry.AddressList[0], 443);
Debug.WriteLine("Opening socket...");
using (Socket mySocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
{
try
{
Debug.WriteLine("Connecting...");
// connect socket
mySocket.Connect(ep);
Debug.WriteLine("Authenticating with server...");
// setup SSL stream
using (SslStream sslStream = new SslStream(mySocket))
{
///////////////////////////////////////////////////////////////////////////////////
// Authenticating using a client certificate stored in the device is possible by
// setting the UseStoredDeviceCertificate property.
//
// In practice it's equivalent to providing a client certificate in
// the 'clientCertificate' parameter when calling AuthenticateAsClient(...)
//
///////////////////////////////////////////////////////////////////////////////////
//stream.UseStoredDeviceCertificate = true;
///////////////////////////////////////////////////////////////////////////////////
// Authenticating the server can be handled in one of three ways:
//
// 1. By providing the root CA certificate of the server being connected to.
//
// 2. Having the target device preloaded with the root CA certificate.
//
// !! NOT SECURED !! NOT RECOMENDED !!
// 3. Forcing the authentication workflow to NOT validate the server certificate.
//
///////////////////////////////////////////////////////////////////////////////////
// option 1
// setup authentication (add CA root certificate to the call)
// Let's encrypt test certificate
//stream.AuthenticateAsClient("www.howsmyssl.com", null, letsEncryptCACert, SslProtocols.Tls11);
// GlobalRoot CA cert from resources
sslStream.AuthenticateAsClient("global-root-ca.chain-demos.digicert.com", null, digiCertGlobalRootCACert, SslProtocols.Tls12);
// option 2
// setup authentication (without providing root CA certificate)
// this requires that the trusted root CA certificates are available in the device certificate store
//stream.AuthenticateAsClient("www.howsmyssl.com", SslProtocols.Tls11);
//stream.AuthenticateAsClient("global-root-ca.chain-demos.digicert.com", SslProtocols.Tls12);
// option 3
// disable certificate validation
//stream.SslVerification = SslVerification.NoVerification;
//stream.AuthenticateAsClient("www.howsmyssl.com", SslProtocols.TLSv11);
Debug.WriteLine("SSL handshake OK!");
// write an HTTP GET request to receive data
byte[] buffer = Encoding.UTF8.GetBytes("GET / HTTP/1.0\r\n\r\n");
sslStream.Write(buffer, 0, buffer.Length);
Debug.WriteLine($"Wrote {buffer.Length} bytes");
int bytesCounter = 0;
do
{
var bufferLenght = sslStream.Length;
// if available length is 0, need to read at least 1 byte to get it started
if (bufferLenght == 0)
{
bufferLenght = 1;
}
// setup buffer to read data from socket
buffer = new byte[bufferLenght];
// trying to read from socket
int bytes = sslStream.Read(buffer, 0, buffer.Length);
bytesCounter += bytes;
if (bytes > 0)
{
// data was read!
// output as string
// mind to use only the amount of data actually read because it could be less than the requested count
Debug.Write(new String(Encoding.UTF8.GetChars(buffer, 0, bytes)));
}
}while (sslStream.DataAvailable);
Debug.WriteLine($"Read {bytesCounter} bytes");
}
}
catch (SocketException ex)
{
Debug.WriteLine($"** Socket exception occurred: {ex.Message} error code {ex.ErrorCode}!**");
}
catch (Exception ex)
{
Debug.WriteLine($"** Exception occurred: {ex.Message}!**");
}
}
Thread.Sleep(Timeout.Infinite);
}
public static void Main()
{
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if BUILD_FOR_ESP32
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
// follow some test URLs and root CA certificates
/////////////////////////////////////////////////////////////////////////////////////
////add certificate in PEM format(as a string in the app)
//X509Certificate rootCACert = new X509Certificate(letsEncryptCACertificate);
////test URL for Let's encrypt certificate
//string url = "https://www.howsmyssl.com";
/////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////
// add certificate from resources in CRT format
X509Certificate rootCACert = new X509Certificate(Resources.GetBytes(Resources.BinaryResources.DigiCertGlobalRootCA));
// test URL for DigiCert certificate
string url = "https://global-root-ca.chain-demos.digicert.com";
///////////////////////////////////////////////////////////////////////////////////
Debug.WriteLine($"Performing Http request to: {url}");
// perform the request as a HttpWebRequest
var httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
httpWebRequest.Method = "GET";
//////////////////////////////////////////////////////////////////////
// need to set the SSL protocol that the connection is going to use //
// *** this MANDATORY otherwise the authentication will fail *** //
//////////////////////////////////////////////////////////////////////
httpWebRequest.SslProtocols = System.Net.Security.SslProtocols.Tls12;
// if the request is to a secured server we need to make sure that we either:
// 1. provide the root CA certificate
// 2. the device has already stored a root CA bundle that will use when performing the authentication
httpWebRequest.HttpsAuthentCert = rootCACert;
// get the response as a HttpWebResponse
// wrap the response object with a using statement to make sure that it's disposed
using (var httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse())
{
// wrap the response stream on a using statement to make sure that it's disposed
using (var stream = httpWebResponse.GetResponseStream())
{
// read response in chunks of 1k
byte[] buffer = new byte[1024];
int bytesRead = 0;
Debug.WriteLine("Http response follows");
Debug.WriteLine(">>>>>>>>>>>>>");
do
{
bytesRead = stream.Read(buffer, 0, buffer.Length);
Debug.Write(Encoding.UTF8.GetString(buffer, 0, bytesRead));
}while (bytesRead >= buffer.Length);
}
Debug.WriteLine(">>>>>>>>>>>>>");
Debug.WriteLine("End of Http response");
}
Thread.Sleep(Timeout.Infinite);
}
public static void Main()
{
NetworkStream netStream = null;
Socket listenerSocket = null;
CertificateManager.AddCaCertificateBundle(testCACertificate);
// server certificate
// make sure to add a correct PEM encoded certificate, including the RSA key
X509Certificate2 serverCert = new X509Certificate2(serverTestCertificate, serverTestCertificateKey, "");
Debug.WriteLine("Waiting for network up and IP address...");
bool success;
CancellationTokenSource cs = new(60000);
#if BUILD_FOR_ESP32
success = NetworkHelper.ConnectWifiDhcp(MySsid, MyPassword, setDateTime: true, token: cs.Token);
#else
success = NetworkHelper.WaitForValidIPAndDate(true, System.Net.NetworkInformation.NetworkInterfaceType.Ethernet, cs.Token);
#endif
if (!success)
{
Debug.WriteLine($"Can't get a proper IP address and DateTime, error: {NetworkHelper.ConnectionError.Error}.");
if (NetworkHelper.ConnectionError.Exception != null)
{
Debug.WriteLine($"Exception: {NetworkHelper.ConnectionError.Exception}");
}
return;
}
Debug.WriteLine("Setting up socket...");
using (Socket mySocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IPv4))
{
// create a local IPEndPoint
IPEndPoint ep = new IPEndPoint(0, 443);
Debug.WriteLine("Listen to connections...");
// bind socket to local endpoint
mySocket.Bind(ep);
// wait for connection
mySocket.Listen(1);
listenerSocket = mySocket.Accept();
try
{
// Once connection established need to create secure stream and authenticate server.
netStream = new SslStream(listenerSocket);
///////////////////////////////////////////////////////////////////////////////////
// Using a server certificate stored in the device is possible by
// setting the UseStoredDeviceCertificate property.
//
// In practice it's equivalent to providing a server certificate in
// the 'serverCertificate' parameter when calling AuthenticateAsServer(...)
//
///////////////////////////////////////////////////////////////////////////////////
((SslStream)netStream).UseStoredDeviceCertificate = true;
// Throws exception if this fails
// pass the server certificate
// do not require client certificate
((SslStream)netStream).AuthenticateAsServer(serverCert, false, SslProtocols.Tls11);
// setup buffer to read data from socket
byte[] buffer = new byte[1024];
// trying to read from socket
int bytes = netStream.Read(buffer, 0, buffer.Length);
Debug.WriteLine($"Read {bytes} bytes");
if (bytes > 0)
{
// we have data!
// output as string
Debug.WriteLine(new string(Encoding.UTF8.GetChars(buffer)));
}
}
catch
{
}
finally
{
if (netStream != null)
{
netStream.Close();
listenerSocket.Close();
}
}
}
}