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POASP.Net Web API doesn't read all bytes from StreamContent
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  1. POASP.Net Web API doesn't read all bytes from StreamContent
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    copied!<p>I have an ASP.Net Web API set up on my website that is used to communicated with a WPF desktop application. I have an action setup on the API to receive binary files from the client application. However in some (seemingly random) cases when I get all the bytes from the request not all the bytes are read. Hopefully you can give me an idea of how to do this in a way that will work all of the time. Here's the code:</p> <p><strong>Client Side:</strong></p> <pre><code>public static SubmitTurnResult SubmitTurn(int turnId, Stream fileStream) { HttpClient client = CreateHttpClient(); HttpContent content = new StreamContent(fileStream); content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment"); content.Headers.ContentDisposition.FileName = "new-turn.Civ5Save"; content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream"); content.Headers.ContentLength = fileStream.Length; HttpResponseMessage response = client.PostAsync( string.Format("SubmitTurn?authKey={0}&amp;turnId={1}", LocalSettings.Instance.AuthenticationKey, turnId ), content ).Result; response.EnsureSuccessStatusCode(); return response.Content.ReadAsAsync&lt;SubmitTurnResult&gt;().Result; } </code></pre> <p><em>SubmitTurnResult</em> is an enum that defines the result on the server, <em>turnId</em> is the ID for the entity this file is attached to, and <em>fileStream</em> is an actual FileStream reading the bytes of disk.</p> <p><strong>Server Side:</strong></p> <pre><code>[HttpGet, HttpPost] public SubmitTurnResult SubmitTurn(string authKey, int turnId) { try { bool worked = false; int gameId = 0; using (GmrEntities gmrDb = new GmrEntities()) { var player = gmrDb.Users.FirstOrDefault(u =&gt; u.AuthKey == authKey); if (player != null) { var turn = player.Turns.FirstOrDefault(t =&gt; t.TurnID == turnId); if (turn != null) { byte[] saveFileBytes = null; using (MemoryStream tempStream = new MemoryStream()) { var task = this.Request.Content.CopyToAsync(tempStream); task.Wait(); saveFileBytes = tempStream.ToArray(); tempStream.Close(); } if (saveFileBytes.Length != this.Request.Content.Headers.ContentLength.Value) { throw new Exception(string.Format("Byte array length ({0}) not equal to HTTP content-length header ({1}). This is not good!", saveFileBytes.Length, this.Request.Content.Headers.ContentLength.Value)); } worked = GameManager.SubmitTurn(turn, saveFileBytes, gmrDb); if (worked) { gameId = turn.Game.GameID; gmrDb.SaveChanges(); } } } } return SubmitTurnResult.OK; } catch (Exception exc) { DebugLogger.WriteExceptionWithComments(exc, string.Format("Diplomacy: Sumbitting turn for turnId: {0}", turnId)); return SubmitTurnResult.UnexpectedError; } } </code></pre>
 

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