Update MaxIdleSessionCount to default to 10,000

Author: halter73

src/ModelContextProtocol.AspNetCore/HttpServerTransportOptions.cs

@@ -66,9 +66,9 @@ public class HttpServerTransportOptions
     /// Past this limit, the server will log a critical error and terminate the oldest idle sessions even if they have not reached
     /// their <see cref="IdleTimeout"/> until the idle session count is below this limit. Clients that keep their session open by
     /// keeping a GET request open will not count towards this limit.
-    /// Defaults to 100,000 sessions.
+    /// Defaults to 10,000 sessions.
     /// </remarks>
-    public int MaxIdleSessionCount { get; set; } = 100_000;
+    public int MaxIdleSessionCount { get; set; } = 10_000;
 
     /// <summary>
     /// Used for testing the <see cref="IdleTimeout"/>.

src/ModelContextProtocol.Core/McpSession.cs

@@ -736,7 +736,7 @@ private static TimeSpan GetElapsed(long startingTimestamp) =>
     [LoggerMessage(Level = LogLevel.Warning, Message = "{EndpointName} method '{Method}' request handler failed.")]
     private partial void LogRequestHandlerException(string endpointName, string method, Exception exception);
 
-    [LoggerMessage(Level = LogLevel.Information, Message = "{EndpointName} received request for unknown request ID '{RequestId}'.")]
+    [LoggerMessage(Level = LogLevel.Information, Message = "{EndpointName} received message for unknown request ID '{RequestId}'.")]
     private partial void LogNoRequestFoundForMessageWithId(string endpointName, RequestId requestId);
 
     [LoggerMessage(Level = LogLevel.Warning, Message = "{EndpointName} request failed for method '{Method}': {ErrorMessage} ({ErrorCode}).")]