c# – ASP.Net Web API不读取StreamContent中的所有字节

客户端：

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}&turnId={1}",LocalSettings.Instance.AuthenticationKey,turnId
                        ),content
    ).Result;

    response.EnsureSuccessStatusCode();

    return response.Content.ReadAsAsync<SubmitTurnResult>().Result;
}

SubmitTurnResult是一个枚举,用于定义服务器上的结果,turnId是此文件附加到的实体的ID,fileStream是读取磁盘字节的实际FileStream.

服务器端：

[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 => u.AuthKey == authKey);
            if (player != null)
            {
                var turn = player.Turns.FirstOrDefault(t => 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;
    }
}