C / C++ / MFC

<br />
////////////////// client code /////////////<br />
#include <br />
#include <br />
#include <br />
<br />
using namespace std;<br />
<br />
#pragma comment(lib, "wsock32.lib")<br />
<br />
#define CS_ERROR 1<br />
#define CS_OK 0<br />
<br />
void sError(char*);<br />
<br />
int main()<br />
{<br />
<br />
WORD version;<br />
WSADATA wsaData;<br />
int rVal=0;<br />
<br />
version = MAKEWORD(1,1);<br />
<br />
WSAStartup(version,(LPWSADATA)&wsaData);<br />
<br />
LPHOSTENT hostEntry;<br />
<br />
//store information about the server<br />
hostEntry = gethostbyname("hibbert");<br />
<br />
if(!hostEntry)<br />
{<br />
sError("Failed gethostbyname()");<br />
//WSACleanup();<br />
return CS_ERROR;<br />
}<br />
<br />
//create the socket<br />
SOCKET theSocket = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);<br />
<br />
if(theSocket == SOCKET_ERROR)<br />
{<br />
sError("Failed socket()");<br />
return CS_ERROR;<br />
}<br />
<br />
//Fill in the sockaddr_in struct<br />
SOCKADDR_IN serverInfo;<br />
<br />
serverInfo.sin_family = PF_INET;<br />
serverInfo.sin_addr = *((LPIN_ADDR)*hostEntry->h_addr_list);<br />
<br />
serverInfo.sin_port = htons(8888);<br />
<br />
rVal=connect(theSocket,(LPSOCKADDR)&serverInfo, sizeof(serverInfo));<br />
if(rVal==SOCKET_ERROR)<br />
{<br />
sError("Failed connect()");<br />
return CS_ERROR;<br />
}<br />
<br />
char *buf = "simpleservermessage\n";<br />
<br />
rVal = send(theSocket, buf, strlen(buf), 0);<br />
<br />
if(rVal == SOCKET_ERROR)<br />
{<br />
sError("Failed send()");<br />
return CS_ERROR;<br />
}<br />
<br />
<br />
closesocket(theSocket);<br />
cout << "closing client"<< endl;<br />
WSACleanup();<br />
<br />
return CS_OK;<br />
}<br />
<br />
void sError(char *str)<br />
{<br />
MessageBox(NULL, str, "SOCKET ERROR", MB_OK);<br />
WSACleanup();<br />
}<br />