public FeiQIM(int Port)
{
msgdt.Columns.Add(new DataColumn("ip", System.Type.GetType("System.String")));
msgdt.Columns.Add(new DataColumn("msg", System.Type.GetType("System.String")));
msgdt.Columns.Add(new DataColumn("msgid", System.Type.GetType("System.String")));
if (!FunctionUtils.checkPort(Port.ToString()))
{
throw new Exception("端口被占用");
}
else
{
UdpClient = new System.Net.Sockets.UdpClient(Port);
UdpClient.JoinMulticastGroup(GroupIP);
//BroadcastOnLine();
}
}
/// <summary>
/// send message to others
/// </summary>
/// <param name="destinationIP">the destination ip ,e.g.,192.168.1.1</param>
/// <param name="msg">message you want to send</param>
public static void SendMessage(string destinationIP, string msg)
{
System.Net.Sockets.TcpClient tcpClient = null;
System.Net.Sockets.NetworkStream netStream = null;
byte[] buffer = System.Text.Encoding.UTF8.GetBytes(msg);
var destIP = System.Net.IPAddress.Parse(destinationIP);
var myIP = Communication.GetLocalIP();
//var myIP = "192.10.110.54";
var epDest = new System.Net.IPEndPoint(destIP, 1124);
Random ro = new Random();
int up = 1150;
int down = 1123;
var sendport = 1123;
while (!FunctionUtils.checkPort(sendport.ToString()))//检查端口占用
{
sendport = ro.Next(down, up);
}
var dpLocal = new System.Net.IPEndPoint(myIP, sendport);
tcpClient = new System.Net.Sockets.TcpClient(dpLocal);
tcpClient.Connect(epDest);
netStream = tcpClient.GetStream();
if (netStream.CanWrite)
{
netStream.Write(buffer, 0, buffer.Length);
}
tcpClient.GetStream().Close();
tcpClient.Client.Close();
tcpClient.Close();
// tcpClient.GetStream().Close();
// tcpClient.Client.Disconnect(false);
//tcpClient.Close();
}