Adjust default PooledConnectionIdleTimeout to 5 seconds

ClickHouse.Driver/Http/DefaultPoolHttpClientFactory.cs

@@ -5,13 +5,13 @@ namespace ClickHouse.Driver.Http;
 
 internal class DefaultPoolHttpClientFactory : IHttpClientFactory, IDisposable
 {
-    private readonly DefaultHttpClientHandler handler;
+    private readonly HttpMessageHandler handler;
 
     public TimeSpan Timeout { get; init; }
 
     public DefaultPoolHttpClientFactory(bool skipServerCertificateValidation)
     {
-        handler = new(skipServerCertificateValidation);
+        handler = HttpHandlerProvider.CreateHandler(skipServerCertificateValidation);
     }
 
     public HttpClient CreateClient(string name) => new(handler, false) { Timeout = Timeout };

ClickHouse.Driver/Http/HttpHandlerProvider.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Net;
+using System.Net.Http;
+using System.Net.Security;
+
+namespace ClickHouse.Driver.Http;
+
+internal static class HttpHandlerProvider
+{
+    public static HttpMessageHandler CreateHandler(bool skipServerCertificateValidation, int? maxConnectionsPerServer = null)
+    {
+#if NETCOREAPP2_1_OR_GREATER
+        var socketsHandler = new SocketsHttpHandler
+        {
+            AutomaticDecompression = DecompressionMethods.GZip | DecompressionMethods.Deflate,
+            PooledConnectionIdleTimeout = TimeSpan.FromSeconds(5),
+        };
+
+        if (maxConnectionsPerServer.HasValue)
+        {
+            socketsHandler.MaxConnectionsPerServer = maxConnectionsPerServer.Value;
+        }
+
+        if (skipServerCertificateValidation)
+        {
+            socketsHandler.SslOptions = new SslClientAuthenticationOptions
+            {
+                RemoteCertificateValidationCallback = (_, _, _, _) => true,
+            };
+        }
+        return socketsHandler;
+#else
+        var defaultHandler = new DefaultHttpClientHandler(skipServerCertificateValidation);
+        if (maxConnectionsPerServer.HasValue)
+        {
+            defaultHandler.MaxConnectionsPerServer = maxConnectionsPerServer.Value;
+        }
+        return defaultHandler;
+#endif
+    }
+}

ClickHouse.Driver/Http/SingleConnectionHttpClientFactory.cs

@@ -5,13 +5,13 @@ namespace ClickHouse.Driver.Http;
 
 internal class SingleConnectionHttpClientFactory : IHttpClientFactory, IDisposable
 {
-    private readonly DefaultHttpClientHandler handler;
+    private readonly HttpMessageHandler handler;
 
     public TimeSpan Timeout { get; init; }
 
     public SingleConnectionHttpClientFactory(bool skipServerCertificateValidation)
     {
-        handler = new(skipServerCertificateValidation) { MaxConnectionsPerServer = 1 };
+        handler = HttpHandlerProvider.CreateHandler(skipServerCertificateValidation, maxConnectionsPerServer: 1);
     }
 
     public HttpClient CreateClient(string name) => new(handler, false) { Timeout = Timeout };