[API Implementation]: Expose CookieException constructors

src/libraries/System.Net.Primitives/ref/System.Net.Primitives.cs

@@ -89,6 +89,8 @@ public void SetCookies(System.Uri uri, string cookieHeader) { }
     public partial class CookieException : System.FormatException, System.Runtime.Serialization.ISerializable
     {
         public CookieException() { }
+        public CookieException(string? message) { }
+        public CookieException(string? message, System.Exception? innerException) { }
         [System.ObsoleteAttribute("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId = "SYSLIB0051", UrlFormat = "https://aka.ms/dotnet-warnings/{0}")]
         [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
         protected CookieException(System.Runtime.Serialization.SerializationInfo serializationInfo, System.Runtime.Serialization.StreamingContext streamingContext) { }

src/libraries/System.Net.Primitives/src/System/Net/CookieException.cs

@@ -14,11 +14,28 @@ public CookieException() : base()
         {
         }
 
-        internal CookieException(string? message) : base(message)
+        /// <summary>
+        /// Initializes a new instance of the <see cref='CookieException'/> class with the specified error message.
+        /// </summary>
+        /// <param name="message">A <see cref="string"/> that describes the error that occurred.</param>
+        /// <remarks>
+        /// The value of <paramref name="message"/> is stored in the <see cref="Exception.Message"/> property of the new instance.
+        /// </remarks>
+        public CookieException(string? message) : base(message)
         {
         }
 
-        internal CookieException(string? message, Exception? inner) : base(message, inner)
+        /// <summary>
+        /// Initializes a new instance of the <see cref='CookieException'/> class with the specified error message
+        /// and a reference to the inner exception that is the cause of this exception.
+        /// </summary>
+        /// <param name="message">A <see cref="string"/> that describes the error that occurred.</param>
+        /// <param name="innerException">A nested <see cref="Exception"/>.</param>
+        /// <remarks>
+        /// The value of <paramref name="message"/> is stored in the <see cref="Exception.Message"/> property of the new instance.
+        /// The value of <paramref name="message"/> is stored in the <see cref="Exception.InnerException"/> property of the new instance.
+        /// </remarks>
+        public CookieException(string? message, Exception? innerException) : base(message, innerException)
         {
         }
 

src/libraries/System.Net.Primitives/tests/UnitTests/CookieExceptionTest.cs

@@ -0,0 +1,32 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using Xunit;
+
+namespace System.Net.Primitives.UnitTests.Tests;
+
+public sealed class CookieExceptionTest
+{
+    [Theory]
+    [InlineData("Testing the CookieException")]
+    [InlineData(null)]
+    public void Constructor_Message(string? message)
+    {
+        var exception = new CookieException(message);
+        Assert.Equal(message, exception.Message);
+    }
+
+    [Theory]
+    [InlineData("Testing the CookieException", true)]
+    [InlineData("Testing the CookieException", false)]
+    [InlineData(null, true)]
+    [InlineData(null, false)]
+    public void Constructor_Message_InnerException(string? message, bool innerException)
+    {
+        var inner = innerException ? new Exception() : null;
+        var exception = new CookieException(message, inner);
+
+        Assert.Equal(message, exception.Message);
+        Assert.Equal(inner, exception.InnerException);
+    }
+}

src/libraries/System.Net.Primitives/tests/UnitTests/Fakes/CookieException.cs

@@ -7,7 +7,7 @@ namespace System.Net
     public class CookieException : FormatException
     {
         public CookieException() : base() { }
-        internal CookieException(string message) : base(message) { }
-        internal CookieException(string message, Exception inner) : base(message, inner) { }
+        public CookieException(string message) : base(message) { }
+        public CookieException(string message, Exception inner) : base(message, inner) { }
     }
 }