WINSOCK Win32 TCP通信

客戶端

#include "stdio.h"

#include "winsock2.h"
#include "windows.h"
#pragma  comment(lib,"WS2_32.lib")




int main()
{
WSADATA data;
WORD    w = MAKEWORD(2,0);
::WSAStartup(w,&data);
SOCKET s;
char sztext[10] = {0};
s = ::socket(AF_INET,SOCK_STREAM,0);
sockaddr_in addr;
addr.sin_family = AF_INET;
addr.sin_port = htons(75);
addr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
printf("客戶端已經啓動\r\n");
::connect(s,(sockaddr *)&addr,sizeof(addr));
::recv(s,sztext,sizeof(sztext),0);
printf("%s",sztext);
::closesocket(s);
::WSACleanup();
if (getchar())
{
return 0;
} 
else
{
::Sleep(100);
}

}

服務器

#include "stdafx.h"


#include "stdio.h"
#include "winsock.h"
#include "windows.h"
#pragma comment(lib,"WS2_32.lib")


int _tmain(int argc, _TCHAR* argv[])
{
WSADATA data;
WORD    w = MAKEWORD(2,0);
char sztext[] = "歡迎您\r\n";
::WSAStartup(w,&data);
SOCKET s,s1;
s = ::socket(AF_INET,SOCK_STREAM,0);
sockaddr_in addr,addr2;
int n = sizeof(addr2);
addr.sin_family = AF_INET;
addr.sin_port = htons(75);
addr.sin_addr.S_un.S_addr = INADDR_ANY;
::bind(s,(sockaddr *)&addr,sizeof(addr));
::listen(s,5);
while (true)
{
s1 = ::accept(s,(sockaddr *)&addr2,&n);
if (s1!=NULL)
{
printf("%s已經連接上\r\n",inet_ntoa(addr2.sin_addr));
::send(s1,sztext,sizeof(sztext),0);
::closesocket(s);
::closesocket(s1);
::WSACleanup();


}
if (getchar())
{
return 0;
} 
else
{
Sleep(100);
}
}




















return 0;
}