How to properly translate .docx file for use in HttpWebRequest POST body?

Question

API

I did it like this but the server returns an error:

using (FileStream fstream = File.OpenRead(dlg.FileName))
                {
                    // преобразуем строку в байты
                    byte[] array = new byte[fstream.Length];
                    // считываем данные
                    fstream.Read(array, 0, array.Length);
                    // декодируем байты в строку
                    content += System.Text.Encoding.Unicode.GetString(array);
                }
...
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(URL_F);
                request.Method = "POST";
                string jsonContent = "{\u0022branch\u0022:\u0022master\u0022, \u0022author_name\u0022:\u0022Sergey\u0022, \u0022content\u0022:\u0022" + content + "\u0022,\u0022commit_message\u0022:\u0022My commit\u0022}";
                System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
                Byte[] byteArray = encoding.GetBytes(jsonContent);

                request.ContentLength = byteArray.Length;
                request.ContentType = @"application/json";

                using (Stream dataStream = request.GetRequestStream())
                {
                    dataStream.Write(byteArray, 0, byteArray.Length);
                }
                long length = 0;
                try
                {
                    using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
                    {
                        length = response.ContentLength;
                    }
                }

dlg.FileName Word file name

Answer 1

The bytes must be converted to base64 string, passed this string to the server in default encoding, on the base64 server back to the byte array.