Implement NullStream

NullSharp/NullStream.cs

@@ -0,0 +1,56 @@
+using System;
+using System.IO;
+using System.Net.Http;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace NullSharp
+{
+    public class NullStream : Stream
+    {
+        public const string DefaultEndpoint = "https://devnull-as-a-service.com/dev/null";
+        private readonly HttpClient Client;
+
+        public NullStream() : this(DefaultEndpoint) { }
+
+        public NullStream(string endpoint) : this(new Uri(endpoint)) { }
+
+        public NullStream(Uri endpoint) {
+            this.Client = new HttpClient() { BaseAddress = endpoint };
+            this.Client.DefaultRequestHeaders.Add("User-Agent", "NullSharp");
+        }
+
+        public override bool CanRead => false;
+
+        public override bool CanSeek => false;
+
+        public override bool CanWrite => true;
+
+        public override bool CanTimeout => true;
+
+        public override long Length => throw new NotSupportedException();
+
+        public override long Position {
+            get => throw new NotSupportedException();
+            set => throw new NotSupportedException();
+        }
+
+        public override void Flush() { }
+
+        public override int Read(byte[] buffer, int offset, int count) => throw new NotSupportedException();
+
+        public override long Seek(long offset, SeekOrigin origin) => throw new NotSupportedException();
+
+        public override void SetLength(long value) => throw new NotSupportedException();
+
+        public override int WriteTimeout {
+            get => (int)this.Client.Timeout.TotalMilliseconds;
+            set => this.Client.Timeout = new TimeSpan(0, 0, 0, 0, value);
+        }
+
+        public override void Write(byte[] buffer, int offset, int count) => this.WriteAsync(buffer, offset, count).Wait();
+
+        public override Task WriteAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
+            => this.Client.PostAsync("", new ByteArrayContent(buffer), cancellationToken);
+    }
+}