How to send HTTP request

#define __INFINITE__ 0x00FFFFFF
#define __20_SECONDS__ 2000
#define __100_MSECONDS__ 10
static int PerformTestTCP_HTTP( char *szHostname, int nPort )
{
int nHandle = 0;
int nResult = 0;
int nReceived = 0;
int nTotalReceived = 0;
unsigned char pucData[64];
//
// Connect to IP Test server.
//
nResult = tcp_connect_to_server( szHostname, nPort, __20_SECONDS__ );
if( nResult >= 0 )
{
nHandle = nResult;
//
// Send HTTP request.
//
while(( nResult = tcp_send_to_server( nHandle,
"GET / HTTP/1.0\r\n\r\n", 18,
__INFINITE__ ))
== ERROR_TIMEOUT )
{
ttestall( 0, __100_MSECONDS__ );
}
if( nResult == 18 )
{
//
// HTTP request sent.
// Infinite Wait (the HTTP disconnection will be performed
// by the remote server.
//
while(( nResult = tcp_recv_from_server( nHandle,
pucData, 64,
__20_SECONDS__ )) > 0 )
{
nReceived = nResult;
nTotalReceived += nReceived;
}
}
// Disconnect and release the allocated handle.
tcp_disconnect_from_server( nHandle );
}
else
{
// Error during connection.
}
return nResult;