[dotnet] Source-generate CDP command and response serialization

dotnet/src/webdriver/DevTools/DevToolsSession.cs

@@ -18,6 +18,7 @@
 // </copyright>
 
 using OpenQA.Selenium.Internal.Logging;
+using OpenQA.Selenium.DevTools.Json;
 using System;
 using System.Collections.Concurrent;
 using System.Globalization;
@@ -60,6 +61,11 @@ public class DevToolsSession : IDevToolsSession
 
         private readonly static ILogger logger = Internal.Logging.Log.GetLogger<DevToolsSession>();
 
+        private static readonly JsonSerializerOptions s_devToolsSerializerOptions = new()
+        {
+            TypeInfoResolver = CdpSerializationContext.Default,
+        };
+
         /// <summary>
         /// Initializes a new instance of the DevToolsSession class, using the specified WebSocket endpoint.
         /// </summary>
@@ -189,7 +195,7 @@ public T GetVersionSpecificDomains<T>() where T : DevToolsSessionDomains
                 throw new ArgumentNullException(nameof(command));
             }
 
-            var result = await SendCommand(command.CommandName, sessionId, JsonSerializer.SerializeToNode(command), cancellationToken, millisecondsTimeout, throwExceptionIfResponseNotReceived).ConfigureAwait(false);
+            var result = await SendCommand(command.CommandName, sessionId, JsonSerializer.SerializeToNode(command, s_devToolsSerializerOptions), cancellationToken, millisecondsTimeout, throwExceptionIfResponseNotReceived).ConfigureAwait(false);
 
             if (result == null)
             {
@@ -201,7 +207,7 @@ public T GetVersionSpecificDomains<T>() where T : DevToolsSessionDomains
                 throw new InvalidOperationException($"Type {typeof(TCommand)} does not correspond to a known command response type.");
             }
 
-            return result.Value.Deserialize(commandResponseType) as ICommandResponse<TCommand>;
+            return (ICommandResponse<TCommand>)result.Value.Deserialize(commandResponseType, s_devToolsSerializerOptions);
         }
 
         /// <summary>

dotnet/src/webdriver/DevTools/Json/CdpJsonSerializationContext.cs

@@ -0,0 +1,8 @@
+using System.Text.Json.Serialization;
+
+namespace OpenQA.Selenium.DevTools.Json;
+
+[JsonSerializable(typeof(ICommand))]
+[JsonSerializable(typeof(ICommandResponse<>))]
+[JsonSourceGenerationOptions(Converters = [typeof(StringConverter)])]
+internal sealed partial class CdpSerializationContext : JsonSerializerContext;

third_party/dotnet/devtools/src/generator/Templates/command.hbs

@@ -55,3 +55,10 @@ namespace {{rootNamespace}}.{{domain.Name}}
     {{/each}}
     }
 }
+
+namespace OpenQA.Selenium.DevTools.Json
+{
+    [global::System.Text.Json.Serialization.JsonSerializable(typeof(global::{{rootNamespace}}.{{domain.Name}}.{{className}}CommandSettings))]
+    [global::System.Text.Json.Serialization.JsonSerializable(typeof(global::{{rootNamespace}}.{{domain.Name}}.{{className}}CommandResponse))]
+    internal sealed partial class CdpSerializationContext;
+}