fix connection bug

NNostr.Client/IsExternalInit.cs

@@ -0,0 +1,8 @@
+
+#if !NET5_0_OR_GREATER
+namespace System.Runtime.CompilerServices
+{
+    internal static class IsExternalInit {}
+}
+
+#endif

NNostr.Client/NNostr.Client.csproj

@@ -6,7 +6,7 @@
         <Nullable>enable</Nullable>
         <LangVersion>11</LangVersion>
         <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-        <PackageVersion>0.0.44</PackageVersion>
+        <PackageVersion>0.0.45</PackageVersion>
         <Title>Nostr Client</Title>
         <Description>A client for Nostr</Description>
         <Copyright>MIT</Copyright>

NNostr.Client/NostrClient.cs

@@ -226,11 +226,6 @@ public void Dispose()
         }
 
 
-        public async Task ConnectAndWaitUntilConnected(CancellationToken token = default)
-        {
-
-        }
-
         public async Task ConnectAndWaitUntilConnected(CancellationToken connectionCancellationToken = default,
             CancellationToken lifetimeCancellationToken = default)
         {

NNostr.Client/Protocols/NIP67.cs

@@ -0,0 +1,51 @@
+using System.Web;
+using NBitcoin.Secp256k1;
+
+namespace NNostr.Client.Protocols;
+
+public static class NIP67
+{
+    public static int EventKind = 33194;
+    public record NIP67UriPayload(
+        ECXOnlyPubKey Pubkey,
+        ECPrivKey Secret,
+        string[] Relays,
+        string[] RequiredCommands,
+        string[] OptionalCommands,
+        string? Budget,
+        string? Identity)
+    {
+        public override string ToString()
+        {
+            var result =
+                $"nostr+walletauth://{Pubkey.ToHex()}?relay={string.Join("&relay=", Relays)}&secret={Secret.CreateXOnlyPubKey().ToHex()}&required_commands={string.Join(" ", RequiredCommands)}";
+
+            if(OptionalCommands.Length > 0)
+                result += $"&optional_commands={string.Join(" ", OptionalCommands)}";
+            if(Budget is not null)
+                result += $"&budget={Budget}";
+            if(Identity is not null)
+                result += $"&identity={Identity}";
+            return result;
+        }
+    }
+
+
+    public const string UriScheme = "nostr+walletconnect";
+
+    //nostr+walletauth://b889ff5b1513b641e2a139f661a661364979c5beee91842f8f0ef42ab558e9d4?relay=wss%3A%2F%2Frelay.damus.io&secret=b8a30fafa48d4795b6c0eec169a383de&required_commands=pay_invoice%20pay_keysend%20make_invoice%20lookup_invoice&optional_commands=list_transactions&budget=10000%2Fdaily
+
+    public static NIP67UriPayload ParseUri(Uri uri)
+    {
+        var query = HttpUtility.ParseQueryString(uri.Query);
+
+        var relays = query.GetValues("relay") ?? Array.Empty<string>();
+        var secret = NostrExtensions.ParseKey(query["secret"]);
+        var requiredCommands = query.GetValues("required_commands")?.SelectMany(s => s.Split(" ")).Distinct().ToArray() ?? Array.Empty<string>();
+        var optionalCommands = query.GetValues("optional_commands")?.SelectMany(s => s.Split(" ")).Distinct().ToArray() ?? Array.Empty<string>();
+        var budget = query.GetValues("budget")?.FirstOrDefault();
+        var identity = query.GetValues("identity")?.FirstOrDefault();
+
+        return new NIP67UriPayload(NostrExtensions.ParsePubKey(uri.Host), secret, relays, requiredCommands, optionalCommands, budget, identity);
+    }
+}