// Utility.cpp: implementation of the CCallbackInternetSession class
// and other functions - contains stuff used by more than one thread
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "myex33a.h"
#include "Utility.h"
#include "Blocksock.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

// connection number
volatile int g_nConnection = 0;
// used by both winsock and wininet
CString g_strServerName = "localhost";
CString g_strServerIP;
volatile UINT g_nPort = 80;
CString g_strFile = "/custom";

CCallbackInternetSession::CCallbackInternetSession( LPCTSTR pstrAgent, DWORD dwContext,
	 DWORD dwAccessType, LPCTSTR pstrProxyName, LPCTSTR pstrProxyBypass, DWORD dwFlags) :
	CInternetSession(pstrAgent, dwContext, dwAccessType, pstrProxyName, pstrProxyBypass, dwFlags)
{
	EnableStatusCallback();
}

void CCallbackInternetSession::OnStatusCallback(DWORD dwContext, DWORD dwInternalStatus,
		LPVOID lpvStatusInformation, DWORD dwStatusInformationLength)
{
	AFX_MANAGE_STATE(AfxGetStaticModuleState());
	int errors[] = {10, 11, 20, 21, 30, 31, 40, 41, 42, 43, 50, 51, 60, 70, 100, 110, 0};
	char* text[] = { 
		"Resolving name",       	
		"Name resolved",       
		"Connecting to server",
		"Connected to server",  
		"Sending request",      
		"Request sent",         
		"Receiving response",   
		"Response received",    
		"Ctl response received",
		"Prefetch",             
		"Closing connection",   
		"Connection closed",    
		"Handle created",       
		"Handle closing",       
		"Request complete",     
		"Redirect",
		"Unknown" };
	int n;
/*  // demonstrates request cancellation 
	if(dwInternalStatus == INTERNET_STATUS_REQUEST_SENT) {
		AfxThrowInternetException(dwContext, 999);
	}
*/
	for(n = 0; errors[n] != 0; n++) {
		if(errors[n] == (int) dwInternalStatus) break;
	}
	g_csStatus.Lock();
	  strcpy(g_pchStatus, text[n]);
	  if(dwInternalStatus  == INTERNET_STATUS_RESOLVING_NAME || 
				dwInternalStatus == INTERNET_STATUS_NAME_RESOLVED) {
		strcat(g_pchStatus, "-");
		strcat(g_pchStatus, (char*) lpvStatusInformation);
	  }
	  TRACE("WININET STATUS: %s\n", g_pchStatus);
	g_csStatus.Unlock();
	// frame doesn't need a handler -- message triggers OnIdle, which updates status bar
	::PostMessage(g_hMainWnd, WM_CALLBACK, 0, 0);
}

void LogInternetException(LPVOID pParam, CInternetException* pe)
{	// pParam holds the HWND for the destination window (in another thread)
	CString strGmt = CTime::GetCurrentTime().FormatGmt("%m/%d/%y %H:%M:% GMT");
	char text1[300], text2[100];
	wsprintf(text1, "CLIENT ERROR: WinInet error #%d -- %s\r\n   ",
		pe->m_dwError, (const char*) strGmt);
	pe->GetErrorMessage(text2, 99);
	strcat(text1, text2);
	if(pe->m_dwError == 12152) {
		strcat(text1, "  URL not found?\r\n");
	}
	::SendMessage((HWND) pParam, EM_SETSEL, (WPARAM) 65534, 65535);
	::SendMessage((HWND) pParam, EM_REPLACESEL, (WPARAM) 0, (LPARAM) text1);
}