UTF8字節到字符串和Winsock GetStream

Question

嗯，我想轉換字符串的大字節的信息。 （長度爲11076）

問題到底是什麼，信息中缺少字符。 （長度10996）

看：

的信息由Winsock連接收到，看proccess：

public static void UpdateClient(UserConnection client) 
    { 
     string data = null; 
     Decoder utf8Decoder = Encoding.UTF8.GetDecoder(); 

      Console.WriteLine("Iniciando"); 
      byte[] buffer = ReadFully(client.TCPClient.GetStream(), 0); 
      int charCount = utf8Decoder.GetCharCount(buffer, 0, buffer.Length); 
      Char[] chars = new Char[charCount]; 
      int charsDecodedCount = utf8Decoder.GetChars(buffer, 0, buffer.Length, chars, 0); 

      foreach (Char c in chars) 
      { 
       data = data + String.Format("{0}", c); 
      } 

      int buffersize = buffer.Length; 
      Console.WriteLine("Chars is: " + chars.Length); 
      Console.WriteLine("Data is: " + data); 
      Console.WriteLine("Byte is: " + buffer.Length); 
      Console.WriteLine("Size is: " + data.Length); 
      Server.Network.ReceiveData.SelectPacket(client.Index, data); 
    } 

    public static byte[] ReadFully(Stream stream, int initialLength) 
    { 
     if (initialLength < 1) 
     { 
      initialLength = 32768; 
     } 

     byte[] buffer = new byte[initialLength]; 
     int read = 0; 

     int chunk; 

     chunk = stream.Read(buffer, read, buffer.Length - read); 

     checkreach: 
      read += chunk; 

      if (read == buffer.Length) 
      { 
       int nextByte = stream.ReadByte(); 

       if (nextByte == -1) 
       { 
        return buffer; 
       } 

       byte[] newBuffer = new byte[buffer.Length * 2]; 
       Array.Copy(buffer, newBuffer, buffer.Length); 
       newBuffer[read] = (byte)nextByte; 
       buffer = newBuffer; 
       read++; 
       goto checkreach; 
      } 

     byte[] ret = new byte[read]; 
     Array.Copy(buffer, ret, read); 
     return ret; 
    } 

任何人有提示或解決方案？

Answer 1

UTF-8編碼文本的字節數比字符數多，這是完全正常的。在UTF-8中，某些字符（例如á和ã）被編碼爲兩個或更多字節。

由於ReadFully方法返回垃圾如果您嘗試使用它來讀取超過適合初始緩衝區，或者如果它不能讀取整個流與一個Read調用，您不應該使用它。字符數組轉換爲字符串的方式也非常緩慢。只需使用StreamReader來讀取流並將其解碼爲字符串：

public static void UpdateClient(UserConnection client) { 
    string data; 
    using (StreamReader reader = new StreamReader(client.TCPClient.GetStream(), Encoding.UTF8)) { 
    data = reader.ReadToEnd(); 
    } 
    Console.WriteLine("Data is: " + data); 
    Console.WriteLine("Size is: " + data.Length); 
    Server.Network.ReceiveData.SelectPacket(client.Index, data); 
}