[dotnet] Fix HttpCommandExecutor events

This is mainly for the purpose of fixing the ability to get the
information of what HTTP requests are being sent to the remote end of
the WebDriver session.

Author: jimevans

dotnet/src/webdriver/Remote/HttpCommandExecutor.cs

@@ -232,7 +232,6 @@ private void CreateHttpClient()
             }
 
             httpClientHandler.Proxy = this.Proxy;
-            // httpClientHandler.MaxConnectionsPerServer = 2000;
 
             this.client = new HttpClient(httpClientHandler);
             string userAgentString = string.Format(CultureInfo.InvariantCulture, UserAgentHeaderTemplate, ResourceUtilities.AssemblyVersion, ResourceUtilities.PlatformFamily);
@@ -249,7 +248,7 @@ private void CreateHttpClient()
 
         private async Task<HttpResponseInfo> MakeHttpRequest(HttpRequestInfo requestInfo)
         {
-            SendingRemoteHttpRequestEventArgs eventArgs = new SendingRemoteHttpRequestEventArgs(null, requestInfo.RequestBody);
+            SendingRemoteHttpRequestEventArgs eventArgs = new SendingRemoteHttpRequestEventArgs(requestInfo.HttpMethod, requestInfo.FullUri.ToString(), requestInfo.RequestBody);
             this.OnSendingRemoteHttpRequest(eventArgs);
 
             HttpMethod method = new HttpMethod(requestInfo.HttpMethod);
@@ -301,29 +300,6 @@ private Response CreateResponse(HttpResponseInfo responseInfo)
                 response.Value = body;
             }
 
-            //if (this.CommandInfoRepository.SpecificationLevel < 1 && (responseInfo.StatusCode < HttpStatusCode.OK || responseInfo.StatusCode >= HttpStatusCode.BadRequest))
-            //{
-            //    if (responseInfo.StatusCode >= HttpStatusCode.BadRequest && responseInfo.StatusCode < HttpStatusCode.InternalServerError)
-            //    {
-            //        response.Status = WebDriverResult.UnhandledError;
-            //    }
-            //    else if (responseInfo.StatusCode >= HttpStatusCode.InternalServerError)
-            //    {
-            //        if (responseInfo.StatusCode == HttpStatusCode.NotImplemented)
-            //        {
-            //            response.Status = WebDriverResult.UnknownCommand;
-            //        }
-            //        else if (response.Status == WebDriverResult.Success)
-            //        {
-            //            response.Status = WebDriverResult.UnhandledError;
-            //        }
-            //    }
-            //    else
-            //    {
-            //        response.Status = WebDriverResult.UnhandledError;
-            //    }
-            //}
-
             if (response.Value is string)
             {
                 response.Value = ((string)response.Value).Replace("\r\n", "\n").Replace("\n", Environment.NewLine);

dotnet/src/webdriver/Remote/SendingRemoteHttpRequestEventArgs.cs

@@ -26,26 +26,46 @@ namespace OpenQA.Selenium.Remote
     /// </summary>
     public class SendingRemoteHttpRequestEventArgs : EventArgs
     {
-        private HttpWebRequest request;
+        private string method;
+        private string fullUrl;
         private string requestBody;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="SendingRemoteHttpRequestEventArgs"/> class.
         /// </summary>
-        /// <param name="request">The <see cref="HttpWebRequest"/> object being sent.</param>
+        /// <param name="method">The HTTP method of the request being sent.</param>
+        /// <param name="fullUrl">The full URL of the request being sent.</param>
         /// <param name="requestBody">The body of the request.</param>
-        public SendingRemoteHttpRequestEventArgs(HttpWebRequest request, string requestBody)
+        public SendingRemoteHttpRequestEventArgs(string method, string fullUrl, string requestBody)
         {
-            this.request = request;
+            this.method = method;
+            this.fullUrl = fullUrl;
             this.requestBody = requestBody;
         }
 
         /// <summary>
         /// Gets the <see cref="HttpWebRequest"/> object representing the HTTP request being sent.
         /// </summary>
+        [Obsolete("Bindings no longer use HttpWebRequest. This property will return null, and will be removed in a future release.")]
         public HttpWebRequest Request
         {
-            get { return this.request; }
+            get { return null; }
+        }
+
+        /// <summary>
+        /// Gets the HTTP method for the HTTP request.
+        /// </summary>
+        public string Method
+        {
+            get { return this.method; }
+        }
+
+        /// <summary>
+        /// Gets the full URL of the HTTP request.
+        /// </summary>
+        public string FullUrl
+        {
+            get { return this.fullUrl; }
         }
 
         /// <summary>