当使用KeepAliveException HttpWebRequest.GetResponse

Question

我试图使用HttpWebRequest为POST的附件CouchDB的。然而，当我尝试 “响应=（HttpWebResponse）httpWebRequest.GetResponse（）;”我接收与消息引发WebException“基础连接已关闭：这是期望被保持活是由服务器关闭的连接”

我已经发现了一些文章指出，保活设置为false和httpversion 1.0解决了局面。我发现，它并没有yeilding完全相同的错误，再加上我不希望因为我不希望使用1.0版本采取这种方法，由于它是如何处理的连接。

任何建议或想法是受欢迎的。我会尝试所有这些，直到一个作品！

public ServerResponse PostAttachment(Server server, Database db, Attachment attachment)
    {
        Stream dataStream;
        HttpWebResponse response = null;
        StreamReader sr = null;
        byte[] buffer;
        string json;
        string boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x");
        string headerTemplate = "Content-Disposition: form-data; name=\"_attachments\"; filename=\"" + attachment.Filename + "\"\r\n Content-Type: application/octet-stream\r\n\r\n";
        byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(headerTemplate);
        byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");


        HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create("http://" + server.Host + ":" + 
            server.Port.ToString() + "/" + db.Name + "/" + attachment.Document.Id);
        httpWebRequest.ContentType = "multipart/form-data; boundary=" + boundary;
        httpWebRequest.Method = "POST";
        httpWebRequest.KeepAlive = true;
        httpWebRequest.ContentLength = attachment.Stream.Length + headerbytes.Length + boundarybytes.Length;

        if (!string.IsNullOrEmpty(server.EncodedCredentials))
            httpWebRequest.Headers.Add("Authorization", server.EncodedCredentials);

        if (!attachment.Stream.CanRead)
            throw new System.NotSupportedException("The stream cannot be read.");

        // Get the request stream
        try
        {
            dataStream = httpWebRequest.GetRequestStream();
        }
        catch (Exception e)
        {
            throw new WebException("Failed to get the request stream.", e);
        }


        buffer = new byte[server.BufferSize];
        int bytesRead;

        dataStream.Write(headerbytes,0,headerbytes.Length); 

        attachment.Stream.Position = 0;
        while ((bytesRead = attachment.Stream.Read(buffer, 0, buffer.Length)) > 0)
        {
            dataStream.Write(buffer, 0, bytesRead);
        }

        dataStream.Write(boundarybytes, 0, boundarybytes.Length);
        dataStream.Close();

        // send the request and get the response
        try
        {
            response = (HttpWebResponse)httpWebRequest.GetResponse();
        }
        catch (Exception e)
        {
            throw new WebException("Invalid response received from server.", e);
        }

        // get the server's response json
        try
        {
            dataStream = response.GetResponseStream();
            sr = new StreamReader(dataStream);
            json = sr.ReadToEnd();
        }
        catch (Exception e)
        {
            throw new WebException("Failed to access the response stream.", e);
        }

        // close up all our streams and response
        sr.Close();
        dataStream.Close();
        response.Close();

        // Deserialize the server response
        return ConvertTo.JsonToServerResponse(json);
    }

Answer 1

相当数量的关于该主题的研究后，我决定使用PUT。虽然蒲团使用POST方法，它是未公开。对于任何人在将来读这篇文章，使用PUT方法，它会让你的生活变得更轻松。