creating new Socket with IPEndPoint

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creating new Socket with IPEndPoint

Hi buddies,

I am trying with a function which can send message to an ip and port using socket
while running this application i am getting an exception as - "{"Only one usage of each socket address (protocol/network address/port)\r\nis normally permitted" }"
Please help ...Sad
 
regards,
Vinu

the code like this,
String IP will be like this - 192.168.1.6:5763

public void SendToIp(string IP, string Message)

{

try

{

string add = IP.Substring(0,IP.IndexOf(":"));

int port = int.Parse(IP.Substring(IP.IndexOf(":")+1,IP.Length-IP.IndexOf(":")-1));

IPAddress ipad = IPAddress.Parse(add);

Socket sk = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);

sk.Bind(new IPEndPoint(ipad,ip));

if(sk.Connected)

{

sk.Send(StringToByte(Message));

}

}

catch(Exception ex)

{

Console.WriteLine("\nException is : {0}",ex.Message);

}

}

Answer this question

creating new Socket with IPEndPoint

  • jnf

    Hi,
    Your code seems incomplete. You are supposed to do a Connect to a remote IP before you do a Send. Or you need to specify the remote IP address where you want to send it to. Socket.Bind is the local port where you want the machine to bind to.



  • TJak

    thanks for the help.... It solved my issue. :)

    regards,

    Vinu.P.K

  • Angus Leeming

    The exception you get from bind is because the port with which you are trying to bind has already been bound to by another socket(May be previous execution of your application which was not terminated- you might want to check your taskmanager for the running processes).
     
    Try netstat -a  from your command prompt.. This gives you information regarding ports and the state the ports are in...


  • ApSav

    Here is a small code snippet that you can use to get started with:



    using System;

    using System.Collections.Generic;

    using System.Text;

    using System.Net;

    using System.Net.Sockets;

    namespace SimpleSocket

    {

    class Program

    {

    static void Main(string[] args)

    {

    Socket sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

    // you can omit the line below if you don't need to specify the client's port sock.Bind(new IPEndPoint(IPAddress.Any, 5000));

    sock.Connect(IPAddress.Parse("ENTER THE IPADDRESS OF THE HOST YOU ARE CONNECTING TO HERE"), 80);

    if(sock.Connected){

    Console.WriteLine("*** Socket Connected ***");

    //sock.Send(...);

    }

    sock.Shutdown(SocketShutdown.Both);

    sock.Close();

    Console.ReadLine();

    }

    }

    }



     


  • ooartist

    Hi Maheshwar,

    thnaks for your reply,

    so i need to add one more line after this,

    Socket sk = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
    sk.Bind(new IPEndPoint(ipad,ip));

    ----------------------------------

    I tried like this...

    Socket sk = new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp);
    sk.Bind(new IPEndPoint(ipad,ip));
    sk.Connect(endpoint);

    Still i am getting exception...

    can u please help me a sample code for this

    regards,
    Vinu
  • creating new Socket with IPEndPoint
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