[dotnet] Utilize dedicated WebDriver Spec endpoint to get named cookie

dotnet/src/webdriver/CookieJar.cs

@@ -36,27 +36,20 @@ public ReadOnlyCollection<Cookie> AllCookies
             {
                 Response response = driver.InternalExecute(DriverCommand.GetAllCookies, new Dictionary<string, object>());
 
-                try
+                List<Cookie> toReturn = new List<Cookie>();
+                if (response.Value is object?[] cookies)
                 {
-                    List<Cookie> toReturn = new List<Cookie>();
-                    if (response.Value is object?[] cookies)
+                    foreach (object? rawCookie in cookies)
                     {
-                        foreach (object? rawCookie in cookies)
+                        if (rawCookie != null)
                         {
-                            if (rawCookie != null)
-                            {
-                                Cookie newCookie = Cookie.FromDictionary((Dictionary<string, object?>)rawCookie);
-                                toReturn.Add(newCookie);
-                            }
+                            Cookie newCookie = Cookie.FromDictionary((Dictionary<string, object?>)rawCookie);
+                            toReturn.Add(newCookie);
                         }
                     }
-
-                    return new ReadOnlyCollection<Cookie>(toReturn);
-                }
-                catch (Exception e)
-                {
-                    throw new WebDriverException("Unexpected problem getting cookies", e);
                 }
+
+                return new ReadOnlyCollection<Cookie>(toReturn);
             }
         }
 
@@ -124,22 +117,21 @@ public void DeleteAllCookies()
         /// <returns>A Cookie from the name; or <see langword="null"/> if not found.</returns>
         public Cookie? GetCookieNamed(string name)
         {
-            if (name is null)
+            if (string.IsNullOrWhiteSpace(name))
             {
-                throw new ArgumentNullException(nameof(name));
+                throw new ArgumentException("Cookie name cannot be empty", nameof(name));
             }
 
-
-            foreach (Cookie currentCookie in this.AllCookies)
+            try
             {
-                if (name.Equals(currentCookie.Name))
-                {
-                    return currentCookie;
-                }
+                var rawCookie = driver.InternalExecute(DriverCommand.GetCookie, new() { { "name", name } }).Value;
 
+                return Cookie.FromDictionary((Dictionary<string, object>)rawCookie);
+            }
+            catch (NoSuchCookieException)
+            {
+                return null;
             }
-
-            return null;
         }
     }
 }

dotnet/src/webdriver/ICookieJar.cs

@@ -47,7 +47,7 @@ public interface ICookieJar
         /// <param name="name">The name of the cookie to retrieve.</param>
         /// <returns>The <see cref="Cookie"/> containing the name. Returns <see langword="null"/>
         /// if no cookie with the specified name is found.</returns>
-        /// <exception cref="ArgumentNullException">If <paramref name="name"/> is <see langword="null"/>.</exception>
+        /// <exception cref="ArgumentException">If <paramref name="name"/> is <see langword="null"/> or <see cref="string.Empty"/>.</exception>
         Cookie? GetCookieNamed(string name);
 
         /// <summary>

dotnet/src/webdriver/NoSuchCookieException.cs

@@ -0,0 +1,63 @@
+// <copyright file="NoSuchCookieException.cs" company="Selenium Committers">
+// Licensed to the Software Freedom Conservancy (SFC) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The SFC licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+// </copyright>
+
+using System;
+
+#nullable enable
+
+namespace OpenQA.Selenium
+{
+    /// <summary>
+    /// The exception that is thrown when a cookie is not found.
+    /// </summary>
+    [Serializable]
+    public class NoSuchCookieException : NotFoundException
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NoSuchCookieException"/> class.
+        /// </summary>
+        public NoSuchCookieException()
+            : base()
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NoSuchCookieException"/> class with
+        /// a specified error message.
+        /// </summary>
+        /// <param name="message">The message that describes the error.</param>
+        public NoSuchCookieException(string? message)
+            : base(message)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="NoSuchCookieException"/> class with
+        /// a specified error message and a reference to the inner exception that is the
+        /// cause of this exception.
+        /// </summary>
+        /// <param name="message">The error message that explains the reason for the exception.</param>
+        /// <param name="innerException">The exception that is the cause of the current exception,
+        /// or <see langword="null"/> if no inner exception is specified.</param>
+        public NoSuchCookieException(string? message, Exception? innerException)
+            : base(message, innerException)
+        {
+        }
+    }
+}

dotnet/src/webdriver/Remote/W3CWireProtocolCommandInfoRepository.cs

@@ -104,7 +104,7 @@ protected override void InitializeCommandDictionary()
             this.TryAddCommand(DriverCommand.ExecuteScript, new HttpCommandInfo(HttpCommandInfo.PostCommand, "/session/{sessionId}/execute/sync"));
             this.TryAddCommand(DriverCommand.ExecuteAsyncScript, new HttpCommandInfo(HttpCommandInfo.PostCommand, "/session/{sessionId}/execute/async"));
             this.TryAddCommand(DriverCommand.GetAllCookies, new HttpCommandInfo(HttpCommandInfo.GetCommand, "/session/{sessionId}/cookie"));
-            this.TryAddCommand(DriverCommand.GetCookie, new HttpCommandInfo(HttpCommandInfo.PostCommand, "/session/{sessionId}/cookie/{name}"));
+            this.TryAddCommand(DriverCommand.GetCookie, new HttpCommandInfo(HttpCommandInfo.GetCommand, "/session/{sessionId}/cookie/{name}"));
             this.TryAddCommand(DriverCommand.AddCookie, new HttpCommandInfo(HttpCommandInfo.PostCommand, "/session/{sessionId}/cookie"));
             this.TryAddCommand(DriverCommand.DeleteCookie, new HttpCommandInfo(HttpCommandInfo.DeleteCommand, "/session/{sessionId}/cookie/{name}"));
             this.TryAddCommand(DriverCommand.DeleteAllCookies, new HttpCommandInfo(HttpCommandInfo.DeleteCommand, "/session/{sessionId}/cookie"));

dotnet/src/webdriver/WebDriver.cs

@@ -847,6 +847,9 @@ private static void UnpackAndThrowOnError(Response errorResponse, string command
                         case WebDriverResult.UnsupportedOperation:
                             throw new UnsupportedOperationException(errorMessage);
 
+                        case WebDriverResult.NoSuchCookie:
+                            throw new NoSuchCookieException(errorMessage);
+
                         default:
                             throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, "{0} ({1})", errorMessage, errorResponse.Status));
                     }