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数据加载中……

udp 小用

client:
#include "Winsock2.h"
#include "stdafx.h"
#pragma comment(lib,"Ws2.lib")
// TODO: 在 STDAFX.H 中
// 引用任何所需的附加头文件,而不是在此文件中引用
void SOCKETRACE(char *buf,int len)
{
    WSADATA wsadata;
    WSAStartup(MAKEWORD(2,0),&wsadata);
    struct sockaddr_in ipaddr;
    ipaddr.sin_family=AF_INET;
    ipaddr.sin_port=htons(11000);
    ipaddr.sin_addr.s_addr=inet_addr("169.254.2.2");

    int  sk=socket(PF_INET,SOCK_DGRAM,IPPROTO_UDP);
    int c=connect(sk,(sockaddr*)&ipaddr,sizeof(ipaddr));
    send(sk,buf,len,0);
    closesocket(sk);
    WSACleanup();
}


void OEMTRACEW(BOOL cond, LPCWSTR fmt, ...)
{
    if(cond)
    {

        int n, size = 100;
        wchar_t* p ;
        va_list ap ;

        p = (wchar_t*)malloc(size * sizeof(wchar_t)) ;

        while( 1 )
        {
            /* Try to print in the allocated space. */
            va_start( ap, fmt ) ;
            n = _vsnwprintf( p, size, fmt, ap ) ;
            va_end( ap ) ;
            /* If that worked, return the string. */
            if( n > -1 && n < size )
                break ;

            /* Else try again with more space. */
            if( n > -1 )   /* C99 conform vsnprintf() */
                size = n+1 ; /* precisely what is needed */
            else          /* glibc 2.0 */
                size *= 2 ;  /* twice the old size */

            p = (wchar_t*)realloc( p, size * sizeof(wchar_t) ) ;
        }
       
        char nstring[200]={0};
        wcstombs( nstring,p,200);
        free( p ) ;
        SOCKETRACE(nstring,strlen(nstring));

    }

}


void OEMTRACE(BOOL cond, const char * fmt, ...)
{
    if(cond)
    {

        int n, size = 100;
        char* p ;
        va_list ap ;

        p = (char*)malloc(size) ;

        while( 1 )
        {
            /* Try to print in the allocated space. */
            va_start( ap, fmt ) ;
            n = _vsnprintf( p, size, fmt, ap ) ;
            va_end( ap ) ;
            /* If that worked, return the string. */
            if( n > -1 && n < size )
                break ;

            /* Else try again with more space. */
            if( n > -1 )   /* C99 conform vsnprintf() */
                size = n+1 ; /* precisely what is needed */
            else          /* glibc 2.0 */
                size *= 2 ;  /* twice the old size */

            p = (char*)realloc( p, size ) ;
        }

       
       
        SOCKETRACE(p,strlen(p));
        free( p ) ;

    }

}
client c#:
udpClient = new UdpClient();
Byte[] bytes = Encoding.Unicode.GetBytes("aa");
            udpClient.Send(bytes, bytes.Length,new IPEndPoint(IPAddress.Parse("169.254.2.2"), 11000));
udpserver c#:
using System;
using System.Collections.Generic;
using System.Text;
using System.Net.Sockets;
using System.Net;

namespace ScocketRec
{
    class Program
    {
        static void Main(string[] args)
        {
            UdpClient udpClient = new UdpClient(new IPEndPoint(IPAddress.Parse("169.254.2.2"), 11000));
            try
            {
              
                //IPEndPoint object will allow us to read datagrams sent from any source.
                IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Parse("169.254.2.1"), 11000);
                while(true)
                {
                    // Blocks until a message returns on this socket from a remote host.
                    Byte[] receiveBytes = udpClient.Receive(ref RemoteIpEndPoint);
                  
                    string returnData = Encoding.ASCII.GetString(receiveBytes);

                    // Uses the IPEndPoint object to determine which of these two hosts responded.
                    Console.WriteLine("This is the message you received " +
                                                 returnData.ToString());
                    Console.WriteLine("This message was sent from " +
                                                RemoteIpEndPoint.Address.ToString() +
                                                " on their port number " +
                                                RemoteIpEndPoint.Port.ToString());
                }

               

                udpClient.Close();
               

            }
            catch (Exception e)
            {
                Console.WriteLine(e.ToString());
            }

        }
    }
}




posted on 2007-11-28 13:46 井泉 阅读(306) 评论(0)  编辑 收藏 引用 所属分类:


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