Make properties in SseClientTransportOptions settable.

Author: eiriktsarpalis

src/ModelContextProtocol/Client/SseClientTransportOptions.cs

@@ -43,12 +43,12 @@ public required Uri Endpoint
     /// <see href="https://modelcontextprotocol.io/specification/2024-11-05/basic/transports#http-with-sse">HTTP with SSE transport specification</see>.
     /// </para>
     /// </remarks>
-    public HttpTransportMode TransportMode { get; init; } = HttpTransportMode.AutoDetect;
+    public HttpTransportMode TransportMode { get; set; } = HttpTransportMode.AutoDetect;
 
     /// <summary>
     /// Gets a transport identifier used for logging purposes.
     /// </summary>
-    public string? Name { get; init; }
+    public string? Name { get; set; }
 
     /// <summary>
     /// Gets or sets a timeout used to establish the initial connection to the SSE server. Defaults to 30 seconds.
@@ -61,13 +61,13 @@ public required Uri Endpoint
     /// </list>
     /// If the timeout expires before the connection is established, a <see cref="TimeoutException"/> will be thrown.
     /// </remarks>
-    public TimeSpan ConnectionTimeout { get; init; } = TimeSpan.FromSeconds(30);
+    public TimeSpan ConnectionTimeout { get; set; } = TimeSpan.FromSeconds(30);
 
     /// <summary>
     /// Gets custom HTTP headers to include in requests to the SSE server.
     /// </summary>
     /// <remarks>
     /// Use this property to specify custom HTTP headers that should be sent with each request to the server.
     /// </remarks>
-    public Dictionary<string, string>? AdditionalHeaders { get; init; }
+    public Dictionary<string, string>? AdditionalHeaders { get; set; }
 }