从gprs接收数据为 。请帮忙解决这个问题。 [英] Receiving the data from gprs as �. Please help to solve this.

问题描述

我正在接收由GPRS设备发送的IP59.92.111.69的数据，但我没有收到正确的数据。我收到的数据只是问号（ ）。请帮我找到解决方案。

这是我的编码。

 使用系统; 
 使用 System.Collections.Generic; 
 使用 System.Linq; 
 使用 System.Web; 
 使用 System.Web.UI; 
 使用 System.Web.UI.WebControls; 
 使用 System.Net.WebSockets; 
 使用 System.Net.Sockets; 
 使用 System.Net; 
 使用 System.Text; 
 使用 System.Threading.Tasks; 
 
 
 
 命名空间 TCP_IP_Client 
 {
  public   partial   class  client：System.Web.UI.Page 
 { 
 System.Net.Sockets.TcpClient clientsocket =  new  System.Net.Sockets.TcpClient（）; 
 
 受保护  void  Page_Load（ object  sender，EventArgs e）
 {
 clientsocket.Connect（  59.92。 111.69， 8080 ）; 
 Label1.Text =  服务器连接; 
 
} 
 
 受保护  void  Button1_Click（< span class =code-keyword> object  sender，EventArgs e）
 {
 NetworkStream serverStream = clientsocket.GetStream（）; 
  //   byte [] outStream = System.Text.Encoding.ASCII.GetBytes（TextBox2.Text + $）;  
  //   serverStream.Write（outStream，0，outStream.Length） ;  
  //   serverStream.Flush（）;  
 < span class =code-keyword> byte  [] inStream =  new   byte  [< span class =code-digit> 10025 ]; 
 serverStream.Read（inStream， 0 ，（ int ）clientsocket.ReceiveBufferSize）; 
 Response.Write（clientsocket.ReceiveBufferSize）; 
  string  returndata = System.Text.Encoding.UTF7.GetString（inStream）; 
  //   string returndata = System.Text.Encoding.UTF32.GetString（inStream）;  
  //   s.Length.ToString（）;  
 msg（returndata） ; 
 TextBox2.Text =  ; 
 TextBox2.Focus（）; 
 
 
} 
  public   void  msg（< span class =code-keyword> string  mesg）
 {
 
 TextBox1.Text = Environment.NewLine +  和 + mesg; 
 
} 
} 
} 

我尝试过：



我尝试过编码格式ASCII，UTF32，UTF7，UTF8和默认编码方法。

解决方案

）;
// serverStream.Write（outStream，0， outStream.Length）;
// serverStream.Flush（）;
byte [] inStream = new byte [ 10025 ];
serverStream.Read（inStream， 0 ，（ int ）clientsocket.ReceiveBufferSize）;
Response.Write（clientsocket.ReceiveBufferSize）;
string returndata = System.T ext.Encoding.UTF7.GetString（插播广告）;
// string returndata = System.Text.Encoding.UTF32.GetString（inStream）;
// s.Length.ToString（）;
msg（returndata） ;
TextBox2.Text = ;
TextBox2.Focus（）;


}
public void msg（< span class =code-keyword> string mesg）
{

TextBox1.Text = Environment.NewLine + 和 + mesg;

}
}
}

我尝试过：



我尝试过编码格式ASCII，UTF32，UTF7，UTF8和默认编码方法。

什么让你认为这是一个编码问题？

这里的快速检查说没有返回真正的数据：数据缓冲区充满了空白。



所以检查你的IP地址，检查远程端，检查你的数据。

并且......看你的尺寸：默认的接收缓冲区大小比你分配的缓冲区大得多！ / BLOCKQUOTE>

I am receiving data from the IP "59.92.111.69" which is sent by an GPRS device, but i am not getting correct data. The data which i am receiving is only question mark("�"). Please help me to find the solution.
Here is my coding.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net.WebSockets;
using System.Net.Sockets;
using System.Net;
using System.Text;
using System.Threading.Tasks;



namespace TCP_IP_Client
{
    public partial class client : System.Web.UI.Page
    {
        System.Net.Sockets.TcpClient clientsocket = new System.Net.Sockets.TcpClient();
        
        protected void Page_Load(object sender, EventArgs e)
        {
            clientsocket.Connect("59.92.111.69", 8080);
            Label1.Text = "Server connected";
            
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            NetworkStream serverStream = clientsocket.GetStream();
           // byte[] outStream = System.Text.Encoding.ASCII.GetBytes(TextBox2.Text + "$");
            //serverStream.Write(outStream, 0, outStream.Length);
            //serverStream.Flush();
            byte[] inStream = new byte[10025];
            serverStream.Read(inStream, 0, (int)clientsocket.ReceiveBufferSize);
            Response.Write(clientsocket.ReceiveBufferSize);
            string returndata = System.Text.Encoding.UTF7.GetString(inStream);
            //string returndata = System.Text.Encoding.UTF32.GetString(inStream);
            //s.Length.ToString();
            msg(returndata);
            TextBox2.Text = "";
            TextBox2.Focus();
            
            
        }
        public void msg(string mesg)
        {
            
            TextBox1.Text = Environment.NewLine + " and " + mesg;

        } 
    }
}

What I have tried:

I have tried the encoding formats ASCII, UTF32, UTF7, UTF8 and default encoding methods.

解决方案

"); //serverStream.Write(outStream, 0, outStream.Length); //serverStream.Flush(); byte[] inStream = new byte[10025]; serverStream.Read(inStream, 0, (int)clientsocket.ReceiveBufferSize); Response.Write(clientsocket.ReceiveBufferSize); string returndata = System.Text.Encoding.UTF7.GetString(inStream); //string returndata = System.Text.Encoding.UTF32.GetString(inStream); //s.Length.ToString(); msg(returndata); TextBox2.Text = ""; TextBox2.Focus(); } public void msg(string mesg) { TextBox1.Text = Environment.NewLine + " and " + mesg; } } }

What I have tried:

I have tried the encoding formats ASCII, UTF32, UTF7, UTF8 and default encoding methods.

What makes you think it's an encoding problem?
A quick check here says there is no real data being returned: the data buffer is full of nulls.

So check your IP address, check the remote end, check your data.
And...watch your sizes: the default receive buffer size is considerably larger than the buffer you have allocated!

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