Added Cancellation to TokenHttpClient

Author: joewashear007

src/Twilio/Clients/BearerToken/TwilioOrgsTokenRestClient.cs

@@ -236,7 +236,7 @@ public bool isTokenExpired(string token){
         ///
         /// <param name="request">request to make</param>
         /// <returns>Task that resolves to the response of the request</returns>
-        public async Task<Response> RequestAsync(TokenRequest request)
+        public async Task<Response> RequestAsync(TokenRequest request, CancellationToken cancellationToken = default)
         {
             request.SetAuth(_accessToken);
 
@@ -252,7 +252,7 @@ public async Task<Response> RequestAsync(TokenRequest request)
             Response response;
             try
             {
-                response = await HttpClient.MakeRequestAsync(request);
+                response = await HttpClient.MakeRequestAsync(request, cancellationToken);
             }
             catch (Exception clientException)
             {

src/Twilio/Http/BearerToken/SystemNetTokenHttpClient.cs

@@ -60,7 +60,7 @@ public override Response MakeRequest(TokenRequest request)
         /// </summary>
         /// <param name="request">Twilio response</param>
         /// <returns>Task that resolves to the response</returns>
-        public override async Task<Response> MakeRequestAsync(TokenRequest request)
+        public override async Task<Response> MakeRequestAsync(TokenRequest request, CancellationToken cancellationToken = default)
         {
             var httpRequest = BuildHttpRequest(request);
             if (!Equals(request.Method, HttpMethod.Get))
@@ -81,13 +81,13 @@ public override async Task<Response> MakeRequestAsync(TokenRequest 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;
         }

src/Twilio/Http/BearerToken/TokenHttpClient.cs

@@ -36,7 +36,7 @@ public abstract class TokenHttpClient
         /// <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(TokenRequest request);
+        public abstract System.Threading.Tasks.Task<Response> MakeRequestAsync(TokenRequest request, CancellationToken cancellationToken = Default);
 #endif
 
     }