求助关于C#程序获取udp端口数据的问题
今天用C#取udp端口数据又遇到个问题，数据是取出来了，但是数据一长点，就只能取半截了。完整的应该是以\final\\queryid\1.1结尾，还望各位高手帮忙看看。
源代码如下，运行之后可以直接测试。感谢感谢！！
PS：5555，没分了，只能给20以表感激~~~
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Collections.Specialized;
public partial class server : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
int port = 1717;
string host = "222.73.220.41 ";
IPAddress ip = IPAddress.Parse(host);
IPEndPoint ipe = new IPEndPoint(ip, port);
Socket c = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
c.Connect(ipe);
Console.WriteLine( "connected! ");
string sendStr = "\\info\\ ";
byte[] bs = Encoding.Default.GetBytes( "\\info\\ ");
c.Send(bs, bs.Length, 0);
string recvStr = " ";
byte[] recvBytes = new byte[20000000];
int bytes;
bytes = c.Receive(recvBytes, recvBytes.Length, 0);
recvStr += Encoding.ASCII.GetString(recvBytes, 0, bytes);
recvStr = recvStr.Replace(@ "\final\\queryid\1.1 ", "\\ ");
recvStr = recvStr.Replace(@ "\hostname ", "hostname ");
string[] arr = recvStr.Split( '\\ ');
StringDictionary sd = new StringDictionary();
for (int i = 0; i < arr.Length / 2; i += 2)
{
sd.Add(arr[i], arr[i + 1]);
}
Response.Write(recvStr);
c.Close();
}
}
[解决办法]
接受的逻辑有点不对。
你用小一点的缓冲区，多次接受。 系统内部，应该有个最大限度。
byte[] recvBytes = new byte[2048];
int bytes;
do
{
bytes = c.Receive(recvBytes, recvBytes.Length, 0);
}
while(bytes > 0);
strRecv += System.Text.Encoding.ASCII.GetString(recvBytes, 0, bytes);
..........
[解决办法]
byte[] b= new byte[2048];
c.ReceiveFrom(b, 0, b.Length, SocketFlags.None, ref ipe);用这个试试
