Added CancellationToken Pass through to Client

src/Twilio/Clients/ITwilioRestClient.cs

@@ -37,7 +37,7 @@ public interface ITwilioRestClient
         ///
         /// <param name="request">Request to make</param>
         /// <returns>response of the request</returns>
-        System.Threading.Tasks.Task<Response> RequestAsync(Request request);
+        System.Threading.Tasks.Task<Response> RequestAsync(Request request,  CancellationToken cancellationToken = default);
 #endif
     }
 }

src/Twilio/Clients/TwilioRestClient.cs

@@ -169,7 +169,7 @@ public Response Request(Request request)
         ///
         /// <param name="request">request to make</param>
         /// <returns>Task that resolves to the response of the request</returns>
-        public async Task<Response> RequestAsync(Request request)
+        public async Task<Response> RequestAsync(Request request,  CancellationToken cancellationToken = default)
         {
             if(_username != null && _password != null){
                 request.SetAuth(_username, _password);
@@ -190,7 +190,7 @@ public async Task<Response> RequestAsync(Request request)
             Response response;
             try
             {
-                response = await HttpClient.MakeRequestAsync(request);
+                response = await HttpClient.MakeRequestAsync(request, cancellationToken);
             }
             catch (Exception clientException)
             {

src/Twilio/Http/HttpClient.cs

@@ -34,7 +34,7 @@ public abstract class HttpClient
         /// <param name="request">request to make</param>
         /// <exception>throws exception on network or connection errors.</exception>
         /// <returns>response of the request</returns>
-        public abstract System.Threading.Tasks.Task<Response> MakeRequestAsync(Request request);
+        public abstract System.Threading.Tasks.Task<Response> MakeRequestAsync(Request request,  CancellationToken cancellationToken = default);
 #endif
 
         /// <summary>

src/Twilio/Http/SystemNetHttpClient.cs

@@ -58,7 +58,7 @@ public override Response MakeRequest(Request request)
         /// </summary>
         /// <param name="request">Twilio response</param>
         /// <returns>Task that resolves to the response</returns>
-        public override async Task<Response> MakeRequestAsync(Request request)
+        public override async Task<Response> MakeRequestAsync(Request request, CancellationToken cancellationToken = default)
         {
             var httpRequest = BuildHttpRequest(request);
             if (!Equals(request.Method, HttpMethod.Get))
@@ -76,13 +76,13 @@ public override async Task<Response> MakeRequestAsync(Request request)
             this.LastRequest = request;
             this.LastResponse = null;
 
-            var httpResponse = await _httpClient.SendAsync(httpRequest).ConfigureAwait(false);
-            var reader = new StreamReader(await httpResponse.Content.ReadAsStreamAsync().ConfigureAwait(false));
+            var httpResponse = await _httpClient.SendAsync(httpRequest, cancellationToken).ConfigureAwait(false);
+            var reader = new StreamReader(await httpResponse.Content.ReadAsStreamAsync(cancellationToken).ConfigureAwait(false));
 
             // Create and return a new Response. Keep a reference to the last
             // response for debugging, but don't return it as it may be shared
             // among threads.
-            var response = new Response(httpResponse.StatusCode, await reader.ReadToEndAsync().ConfigureAwait(false), httpResponse.Headers);
+            var response = new Response(httpResponse.StatusCode, await reader.ReadToEndAsync(cancellationToken).ConfigureAwait(false), httpResponse.Headers);
             this.LastResponse = response;
             return response;
         }