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src/REST/RestServices.cs

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+using System;
+using System.Net.Http;
+using System.Net.Http.Headers;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Kalakoi.Crypto.ShapeShift
+{
+    /// <summary>
+    /// Provides easy access to GET and POST functionality for REST services.
+    /// </summary>
+    internal static class RestServices
+    {
+        /// <summary>
+        /// Sends GET request to REST service and returns response.
+        /// </summary>
+        /// <param name="uri">Address to send request to.</param>
+        /// <returns>JSON data as string.</returns>
+        internal static async Task<string> GetResponseAsync(Uri uri)
+        {
+            //Create client to send GET request
+            using (HttpClient client = new HttpClient())
+            {
+                //Add request headers
+                client.DefaultRequestHeaders.Add("user-agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome / 58.0.3029.110 Safari / 537.36");
+                //Send request and await response
+                string response = await client.GetStringAsync(uri).ConfigureAwait(false);
+                return response;
+            }
+        }
+
+        /// <summary>
+        /// Sends POST request to REST service with JSON data and returns response.
+        /// </summary>
+        /// <param name="uri">Web address to send request.</param>
+        /// <param name="Data">JSON data to send with request.</param>
+        /// <returns>JSON data as string.</returns>
+        internal static async Task<string> GetPostResponseAsync(Uri uri, string Data)
+        {
+            //Create Client to send and receive data from REST service
+            using (HttpClient client = new HttpClient())
+            {
+                //Add headers for request
+                client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
+                client.DefaultRequestHeaders.Add("user-agent", "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome / 58.0.3029.110 Safari / 537.36");
+                client.DefaultRequestHeaders.Host = uri.Host;
+                //Create content to send from JSON string
+                HttpContent content = new StringContent(Data, Encoding.UTF8, @"application/json");
+                //Send POST request and await response
+                HttpResponseMessage response = await client.PostAsync(uri, content).ConfigureAwait(false);
+                response.EnsureSuccessStatusCode();
+                //Return response JSON as string
+                return await response.Content.ReadAsStringAsync().ConfigureAwait(false);
+            }
+        }
+    }
+}