HTTP Client

Writing your own HTTP Client

Using INETSDK

Requirements

Visual C++ (4.0)
INetSDK (5.5 MB)

Program 1

#include <windows.h>
#include <wininet.h>
#include <stdio.h>
char aa[100];char bb[100];char cc[200];
void *m_hSession;
void abc(char *p)
{
  FILE *fp=fopen("z.txt","a+");
  fprintf(fp,"%s\n",p);
  fclose(fp);
}
long _stdcall zzz (HWND,UINT,WPARAM,LPARAM);
WNDCLASS a;HWND b;MSG c;
int _stdcall WinMain(HINSTANCE i,HINSTANCE j,char *k,int l)
{
  a.lpszClassName="a1";
  a.hInstance=i;
  a.lpfnWndProc=zzz;
  a.hbrBackground=GetStockObject(WHITE_BRUSH);
  RegisterClass(&a);
  b=CreateWindow("a1","aaa",WS_OVERLAPPEDWINDOW,1,1,10,20,0,0,i,0);
  ShowWindow(b,3);
  while ( GetMessage(&c,0,0,0) )
     DispatchMessage(&c);
  return 1;
}
long _stdcall zzz (HWND w,UINT x,WPARAM y,LPARAM z)
{
  if ( x == WM_LBUTTONDOWN)
  {
    m_hSession=::InternetOpen("MSDN ",0,0,
               INTERNET_INVALID_PORT_NUMBER,0);
    sprintf(aa,"InternetOpen m_hSession %p",m_hSession);
    MessageBox(0,aa,aa,0);
    HINTERNET hConnect=InternetConnect(m_hSession,"www.microsoft.com",
    INTERNET_INVALID_PORT_NUMBER,"","",INTERNET_SERVICE_HTTP,0,0) ;
    sprintf(aa,"InternetConnect hConnect %p",hConnect);
    MessageBox(0,aa,aa,0);
    HINTERNET hHttpFile=HttpOpenRequest(hConnect,"GET","",
    HTTP_VERSION,  NULL,0,INTERNET_FLAG_DONT_CACHE,0) ;
    sprintf(aa,"HttpOpenRequest hHttpFile %p",hHttpFile);
    MessageBox(0,aa,aa,0);
    BOOL bSendRequest = ::HttpSendRequest(hHttpFile, NULL, 0, 0, 0);
    sprintf(aa,"HttpSendRequest %p bSendRequest %d",
                        HttpSendRequest,bSendRequest);
    MessageBox(0,aa,aa,0);
    char bufQuery[32] ;DWORD dwFileSize ;
    DWORD dwLengthBufQuery = sizeof (bufQuery);
    BOOL bQuery = ::HttpQueryInfo(hHttpFile,HTTP_QUERY_CONTENT_LENGTH,
                                    bufQuery, &dwLengthBufQuery,NULL) ;
    sprintf(aa,"HttpQueryInfo hHttpFile %p bQuery %d bufQuery %ld",
                                   hHttpFile,bQuery,atol(bufQuery));
    MessageBox(0,aa,aa,0);
    dwFileSize = (DWORD)atol(bufQuery) ;
    char * m_buffer = new char[dwFileSize+1] ;
    DWORD dwBytesRead ;
    BOOL bRead=InternetReadFile(hHttpFile,m_buffer,
                                dwFileSize+1,&dwBytesRead);
    sprintf(aa,"InternetReadFile dwBytesRead %ld bRead %d",
                                        dwBytesRead,bRead);
    MessageBox(0,aa,aa,0);
    abc(m_buffer);
    MessageBox(0,"all over","hi",0);
  }
  if ( x == WM_DESTROY)
      PostQuitMessage(0);
  return DefWindowProc(w,x,y,z);
}

Program 2


#include <windows.h>
#include <urlhlink.h>
#include <urlmon.h>
long _stdcall zzz (HWND,UINT,WPARAM,LPARAM);
WNDCLASS a;HWND b;MSG c;
int _stdcall WinMain(HINSTANCE i,HINSTANCE j,char *k,int l)
{
  a.lpszClassName="a1";
  a.hInstance=i;
  a.lpfnWndProc=zzz;
  a.hbrBackground=GetStockObject(WHITE_BRUSH);
  RegisterClass(&a);
  b=CreateWindow("a1","aaa",WS_OVERLAPPEDWINDOW,1,1,10,20,0,0,i,0);
  ShowWindow(b,3);
  while ( GetMessage(&c,0,0,0) )
    DispatchMessage(&c);
  return 1;
}
long _stdcall zzz (HWND w,UINT x,WPARAM y,LPARAM z)
{
  if ( x == WM_LBUTTONDOWN)
  {
     HlinkSimpleNavigateToString(L"http://www.microsoft.com",
                                                0,0,0,0,0,0,0);
     MessageBox(0,"all over","hi",0);
  }
  if ( x == WM_DESTROY)
      PostQuitMessage(0);
  return DefWindowProc(w,x,y,z);
}

Program 3

#define INITGUID
#include <windows.h>
#include <urlhlink.h>
#include <urlmon.h>
#include <exdisp.h>
#include <stdio.h>
#include <hlink.h>
long _stdcall zzz (HWND,UINT,WPARAM,LPARAM);
WNDCLASS a;HWND b;MSG c;char aa[100];
int _stdcall WinMain(HINSTANCE i,HINSTANCE j,char *k,int l)
{
  a.lpszClassName="a1";
  a.hInstance=i;
  a.lpfnWndProc=zzz;
  a.hbrBackground=GetStockObject(WHITE_BRUSH);
  RegisterClass(&a);
  b=CreateWindow("a1","aaa",WS_OVERLAPPEDWINDOW,1,1,10,20,0,0,i,0);
  ShowWindow(b,3);
  while ( GetMessage(&c,0,0,0) )
    DispatchMessage(&c);
  return 1;
}
HRESULT h; IHlink *p;
long _stdcall zzz (HWND w,UINT x,WPARAM y,LPARAM z)
{
  if ( x == WM_LBUTTONDOWN)
  {
    h=HlinkCreateFromString (L"http://www.microsoft.com",0,0,
                               0,0,0,IID_IUnknown,(void **)&p);
    sprintf(aa,"h=%ld p=%p",h,p);
    MessageBox(0,aa,aa,0);
    MessageBox(0,"all over","hi",0);
  }
  if ( x == WM_DESTROY)
    PostQuitMessage(0);
  return DefWindowProc(w,x,y,z);
}

Program 4

#include <windows.h>
#include <urlhlink.h>
#include <urlmon.h>

class ccc : public IBindStatusCallback
{
  public:
  STDMETHODIMP   QueryInterface(REFIID riid ,void ** ppv)
  { return E_NOINTERFACE;}
  STDMETHODIMP_(ULONG)    AddRef()
  { return 0; }
  STDMETHODIMP_(ULONG)    Release()
  {  return 0;}
  STDMETHODIMP    OnStartBinding(DWORD grfBSCOption, IBinding* pbinding)
  { return 0; }
  STDMETHODIMP    GetPriority(LONG* pnPriority)
  { return 0; }
  STDMETHODIMP    OnLowResource(DWORD dwReserved)
  { return 0; }
  STDMETHOD(OnProgress)(ULONG ulProgress,ULONG ulProgressMax,
                        ULONG ulStatusCode,LPCWSTR szStatusText)
  { return 0; }
  STDMETHODIMP    OnStopBinding(HRESULT hrResult, LPCWSTR szError)
  { return 0; }
  STDMETHODIMP    GetBindInfo(DWORD* pgrfBINDF, BINDINFO* pbindinfo)
  { return 0; }
  STDMETHODIMP    OnDataAvailable(DWORD grfBSCF, DWORD dwSize,
                                       FORMATETC *pfmtetc,STGMEDIUM* pstgmed)
  { return 0; }
  STDMETHODIMP    OnObjectAvailable(REFIID riid, IUnknown* punk)
  { return 0; }
};

long _stdcall zzz (HWND,UINT,WPARAM,LPARAM);
WNDCLASS a;HWND b;MSG c;
int _stdcall WinMain(HINSTANCE i,HINSTANCE j,char *k,int l)
{
  a.lpszClassName="a1";
  a.hInstance=i;
  a.lpfnWndProc=zzz;
  a.hbrBackground=GetStockObject(WHITE_BRUSH);
  RegisterClass(&a);
  b=CreateWindow("a1","aaa",WS_OVERLAPPEDWINDOW,1,1,10,20,0,0,i,0);
  ShowWindow(b,3);
  while ( GetMessage(&c,0,0,0) )
     DispatchMessage(&c);
  return 1;
}
long _stdcall zzz (HWND w,UINT x,WPARAM y,LPARAM z)
{
  if ( x == WM_LBUTTONDOWN)
  {
    ccc *d = new ccc;
    URLDownloadToFile(0,"http://www.microsoft.com/default.htm",
                                              "z.txt",0,d);
    MessageBox(0,"all over","hi",0);
  }
  if ( x == WM_DESTROY)
    PostQuitMessage(0);
  return DefWindowProc(w,x,y,z);
}

Program 5

#define INITGUID
#include <windows.h>
#include <urlhlink.h>
#include <urlmon.h>
#include <exdisp.h>
#include <stdio.h>
long _stdcall zzz (HWND,UINT,WPARAM,LPARAM);
WNDCLASS a;HWND b;MSG c;char aa[100];
int _stdcall WinMain(HINSTANCE i,HINSTANCE j,char *k,int l)
{
  a.lpszClassName="a1";
  a.hInstance=i;
  a.lpfnWndProc=zzz;
  a.hbrBackground=GetStockObject(WHITE_BRUSH);
  RegisterClass(&a);
  b=CreateWindow("a1","aaa",WS_OVERLAPPEDWINDOW,1,1,10,20,0,0,i,0);
  ShowWindow(b,3);
  while ( GetMessage(&c,0,0,0) )
        DispatchMessage(&c);
  return 1;
}
IWebBrowser *m_pIWebBrowser;HRESULT h;

long _stdcall zzz (HWND w,UINT x,WPARAM y,LPARAM z)
{
   if ( x == WM_LBUTTONDOWN)
   {
     h=CoCreateInstance(CLSID_InternetExplorer,0,0,IID_IUnknown,
                                 (void **)  &m_pIWebBrowser);
     sprintf(aa,"CoCreateInstance h=%ld m_pIWebBrowser %p",h,m_pIWebBrowser);
     MessageBox(0,aa,aa,0);
     MessageBox(0,"all over","hi",0);
   }
   if ( x == WM_DESTROY)
        PostQuitMessage(0);
   return DefWindowProc(w,x,y,z);
}

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Vijay Mukhi's Computer Institute
VMCI, B-13, Everest Building, Tardeo, Bombay 400 034, India
E-mail:vmukhi@giasbm01.vsnl.net.in Tel : 91-22-496 4335 /6/7/8/9 Fax : 91-22-307 28 59
http://www.vijaymukhi.com

Writing your own HTTP Client

Using INETSDK