Feat/gateway

.github/workflows/samples2docker.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Login to GitHub Container Registry
-      uses: docker/login-action@v1
+      uses: docker/login-action@v2
       with:
         registry: ghcr.io
         username: ${{ github.actor }}

samples/iothub-sample/appsettings.json

@@ -7,6 +7,6 @@
     }
   },
   "ConnectionStrings": {
-    "cs": "HostName=rido-freetier.azure-devices.net;DeviceId=device23;SharedAccessKey=MDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDA="
+    "cs": "HostName=ridofree.azure-devices.net;DeviceId=leaf02;SharedAccessKey=+icdXc8+XlxlggkOXdpaK7lacuJHOKqdwok8ClkFWFY=;GatewayHostName=localhost;CaFile=c:/certs/localhost/ca.pem"
   }
 }

samples/memmon/Device.cs

@@ -238,7 +238,7 @@ string RenderData()
             StringBuilder sb = new();
             AppendLineWithPadRight(sb, " ");
             AppendLineWithPadRight(sb, $"{connectionSettings?.HostName}:{connectionSettings?.TcpPort}");
-            AppendLineWithPadRight(sb, $"{connectionSettings.ClientId} (Auth:{connectionSettings.Auth}/ TLS:{connectionSettings.UseTls})");
+            AppendLineWithPadRight(sb, $"{connectionSettings.ClientId} (Auth:{connectionSettings.Auth}/ TLS:{connectionSettings.UseTls}) GW: {connectionSettings.GatewayHostName}");
             AppendLineWithPadRight(sb, " ");
             AppendLineWithPadRight(sb, string.Format("{0:8} | {1:15} | {2}", "Property", "Value".PadRight(15), "Version"));
             AppendLineWithPadRight(sb, string.Format("{0:8} | {1:15} | {2}", "--------", "-----".PadLeft(15, '-'), "------"));

src/MQTTnet.Extensions.MultiCloud.AwsIoTClient/ShadowSerializer.cs

@@ -28,7 +28,9 @@ public static T FromString<T>(string s) => JsonSerializer.Deserialize<T>(s,
             })!;
     }
 
+#pragma warning disable CA1822 // Mark members as static
     public byte[] ToBytes<T>(T payload, string name = "", int? version = null)
+#pragma warning restore CA1822 // Mark members as static
     {
         if (string.IsNullOrEmpty(name))
         {

src/MQTTnet.Extensions.MultiCloud/Binders/CloudToDeviceBinder.cs

@@ -42,7 +42,7 @@ public CloudToDeviceBinder(IMqttClient connection, string name, IMessageSerializ
                     if (resp != null)
                     {
                         byte[] responseBytes = serializer.ToBytes(resp, WrapResponse ? _name : string.Empty);
-                        string? resTopic = responseTopicPattern?.Replace("{rid}", tp.Rid.ToString()).Replace("{version}", tp.Version.ToString());
+                        string? resTopic = responseTopicPattern?.Replace("{rid}", tp.Rid!).Replace("{version}", tp.Version.ToString());
                         _ = connection.PublishAsync(
                             new MqttApplicationMessageBuilder()
                                 .WithTopic(resTopic)

src/MQTTnet.Extensions.MultiCloud/Binders/TopicParameters.cs

@@ -2,6 +2,6 @@
 
 public class TopicParameters
 {
-    public int Rid { get; set; }
+    public string? Rid { get; set; }
     public int Version { get; set; }
 }

src/MQTTnet.Extensions.MultiCloud/Binders/TopicParser.cs

@@ -8,19 +8,15 @@ public static TopicParameters ParseTopic(string topic)
         {
             var segments = topic.Split('/');
             int twinVersion = -1;
-            int rid = -1;
+            string rid = string.Empty;
             if (topic.Contains('?'))
             {
                 var qs = HttpUtility.ParseQueryString(segments[^1]);
                 if (int.TryParse(qs["$version"], out int v))
                 {
                     twinVersion = v;
                 }
-
-                if (int.TryParse(qs["$rid"], out int r))
-                {
-                    rid = r;
-                }
+                rid = Convert.ToString(qs["$rid"])!;
             }
             return new TopicParameters() { Rid = rid, Version = twinVersion };
         }

src/MQTTnet.Extensions.MultiCloud/Connections/ConnectionSettings.cs

@@ -42,6 +42,8 @@ public AuthType Auth
     public string? CaFile { get; set; }
     public bool DisableCrl { get; set; }
 
+    public string? GatewayHostName { get; set; }
+
     public ConnectionSettings()
     {
         SasMinutes = Default_SasMinutes;
@@ -50,6 +52,7 @@ public ConnectionSettings()
         UseTls = Default_UseTls == "true";
         DisableCrl = Default_DisableCrl == "true";
         CleanSession = Default_CleanSession == "true";
+        GatewayHostName = string.Empty;
     }
 
     public static ConnectionSettings FromConnectionString(string cs) => new(cs);
@@ -98,6 +101,7 @@ private void ParseConnectionString(string cs)
         UseTls = GetStringValue(map, nameof(UseTls), Default_UseTls) == "true";
         CaFile = GetStringValue(map, nameof(CaFile));
         DisableCrl = GetStringValue(map, nameof(DisableCrl), Default_DisableCrl) == "true";
+        GatewayHostName = GetStringValue(map, nameof(GatewayHostName));
     }
 
     private static void AppendIfNotEmpty(StringBuilder sb, string name, string val)
@@ -129,6 +133,7 @@ public override string ToString()
         AppendIfNotEmpty(result, nameof(ModelId), ModelId!);
         AppendIfNotEmpty(result, nameof(ClientId), ClientId!);
         AppendIfNotEmpty(result, nameof(Auth), Auth!.ToString());
+        AppendIfNotEmpty(result, nameof(GatewayHostName), GatewayHostName!.ToString());
         result.Remove(result.Length - 1, 1);
         return result.ToString();
     }

src/MQTTnet.Extensions.MultiCloud/Connections/SasAuth.cs

@@ -16,12 +16,16 @@ internal static string Sign(string requestString, string key)
 
     internal static string CreateSasToken(string resource, string sasKey, int minutes)
     {
-
         var expiry = DateTimeOffset.UtcNow.AddMinutes(minutes).ToUnixTimeSeconds().ToString();
         var sig = System.Net.WebUtility.UrlEncode(Sign($"{resource}\n{expiry}", sasKey));
         return $"SharedAccessSignature sr={resource}&sig={sig}&se={expiry}";
     }
 
-    internal static (string username, string password) GenerateHubSasCredentials(string hostName, string deviceId, string sasKey, string modelId, int minutes = 60) =>
-        (GetUserName(hostName, deviceId, modelId), CreateSasToken($"{hostName}/devices/{deviceId}", sasKey, minutes));
+    internal static (string username, string password) GenerateHubSasCredentials(string hostName, string deviceId, string sasKey, string audience, string modelId, int minutes = 60)
+    {
+        string user = GetUserName(hostName, deviceId, modelId);
+        string pwd = CreateSasToken($"{audience}/devices/{deviceId}", sasKey, minutes);
+        return (user, pwd);
+    }
+
 }

src/MQTTnet.Extensions.MultiCloud/Connections/WithAzureIoTHubCredentials.cs

@@ -7,6 +7,11 @@ public static partial class MqttNetExtensions
 {
     internal static MqttClientOptionsBuilder WithAzureIoTHubCredentials(this MqttClientOptionsBuilder builder, ConnectionSettings? cs)
     {
+        string? hostName = cs!.HostName!;
+        if (!string.IsNullOrEmpty(cs.GatewayHostName))
+        {
+            hostName = cs.GatewayHostName;
+        }
         if (cs?.Auth == AuthType.Sas)
         {
             if (string.IsNullOrEmpty(cs.ModuleId))
@@ -17,7 +22,8 @@ internal static MqttClientOptionsBuilder WithAzureIoTHubCredentials(this MqttCli
             {
                 cs.ClientId = $"{cs.DeviceId}/{cs.ModuleId}";
             }
-            return builder.WithAzureIoTHubCredentialsSas(cs.HostName!, cs.DeviceId!, cs.ModuleId!, cs.SharedAccessKey!, cs.ModelId!, cs.SasMinutes, cs.TcpPort);
+            builder.WithTlsSettings(cs);
+            return builder.WithAzureIoTHubCredentialsSas(hostName, cs.DeviceId!, cs.ModuleId!, cs.HostName!, cs.SharedAccessKey!, cs.ModelId!, cs.SasMinutes, cs.TcpPort);
         }
         else if (cs?.Auth == AuthType.X509)
         {
@@ -34,31 +40,29 @@ internal static MqttClientOptionsBuilder WithAzureIoTHubCredentials(this MqttCli
             {
                 cs.DeviceId = clientId;
             }
-
-            return builder.WithAzureIoTHubCredentialsX509(cs.HostName!, cert, cs.ModelId!, cs.TcpPort);
+            builder.WithTlsSettings(cs);
+            return builder.WithAzureIoTHubCredentialsX509(hostName, cert, cs.ModelId!, cs.TcpPort);
         }
         else
         {
             throw new ApplicationException("Auth not supported: " + cs?.Auth);
         }
     }
 
-    public static MqttClientOptionsBuilder WithAzureIoTHubCredentialsSas(this MqttClientOptionsBuilder builder, string hostName, string deviceId, string moduleId, string sasKey, string modelId, int sasMinutes, int tcpPort)
+    public static MqttClientOptionsBuilder WithAzureIoTHubCredentialsSas(this MqttClientOptionsBuilder builder, string hostName, string deviceId, string moduleId, string audience, string sasKey, string modelId, int sasMinutes, int tcpPort)
     {
         if (string.IsNullOrEmpty(moduleId))
         {
-            (string username, string password) = SasAuth.GenerateHubSasCredentials(hostName, deviceId, sasKey, modelId, sasMinutes);
+            (string username, string password) = SasAuth.GenerateHubSasCredentials(hostName, deviceId, sasKey, audience, modelId,  sasMinutes);
             builder
                 .WithTcpServer(hostName, tcpPort)
-                .WithTls()
                 .WithCredentials(username, password);
         }
         else
         {
-            (string username, string password) = SasAuth.GenerateHubSasCredentials(hostName, $"{deviceId}/{moduleId}", sasKey, modelId, sasMinutes);
+            (string username, string password) = SasAuth.GenerateHubSasCredentials(hostName, $"{deviceId}/{moduleId}", sasKey, modelId, audience, sasMinutes);
             builder
                 .WithTcpServer(hostName, tcpPort)
-                .WithTls()
                 .WithCredentials(username, password);
         }
         return builder;
@@ -70,13 +74,7 @@ public static MqttClientOptionsBuilder WithAzureIoTHubCredentialsX509(this MqttC
 
         builder
             .WithTcpServer(hostName, tcpPort)
-            .WithCredentials(new MqttClientCredentials(SasAuth.GetUserName(hostName, clientId, modelId)))
-            .WithTls(new MqttClientOptionsBuilderTlsParameters
-            {
-                UseTls = true,
-                SslProtocol = System.Security.Authentication.SslProtocols.Tls12,
-                Certificates = new List<X509Certificate> { cert }
-            });
+            .WithCredentials(new MqttClientCredentials(SasAuth.GetUserName(hostName, clientId, modelId)));
         return builder;
     }
 

tests/MQTTnet.Extensions.MultiCloud.UnitTests/MockMqttClient.cs

@@ -11,7 +11,7 @@ namespace MQTTnet.Extensions.MultiCloud.UnitTests
 
     internal class MockMqttClient : IMqttClient
     {
-        string _clientId = "";
+        readonly string _clientId = "";
 
 
 #pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider declaring as nullable.