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128 lines
2.9 KiB
128 lines
2.9 KiB
/*++
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Copyright (c) 1995 Microsoft Corporation
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Module Name:
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io.c
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Abstract:
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I/O support for the caterror sample web browser.
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Author:
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David Treadwell (davidtr) 16-Mar-1995
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Revision History:
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--*/
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#include "caterror.h"
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BOOL
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GetHttpObject (
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IN LPSTR ServerName,
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IN LPSTR ObjectName,
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IN INTERNET_PORT ServerPort,
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IN LPBYTE Buffer,
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IN DWORD BufferLength,
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OUT LPDWORD BytesRead
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)
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{
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BOOL success;
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HINTERNET serverHandle;
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HINTERNET requestHandle;
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DWORD bytesRead;
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DWORD totalBytesRead;
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//
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// Connect to the HTTP server.
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//
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serverHandle = InternetConnect(
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hInternetSession,
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ServerName,
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ServerPort,
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NULL,
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NULL,
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INTERNET_SERVICE_HTTP,
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0,
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0
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);
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if ( serverHandle == NULL ) {
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printf( "InternetConnect failed: %ld\n", GetLastError( ) );
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return FALSE;
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}
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//
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// Prepare and send the request that we're going to make.
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//
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requestHandle = HttpOpenRequest(
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serverHandle,
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"GET",
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ObjectName,
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HTTP_VERSION,
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NULL,
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NULL,
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INTERNET_FLAG_RELOAD,
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0
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);
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if ( requestHandle == NULL ) {
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printf( "HttpOpenRequest failed: %ld\n", GetLastError( ) );
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InternetCloseHandle( serverHandle );
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return FALSE;
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}
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success = HttpSendRequest( requestHandle, NULL, 0, NULL, 0 );
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if ( !success ) {
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printf( "HttpSendRequest failed: %ld\n", GetLastError( ) );
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InternetCloseHandle( requestHandle );
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InternetCloseHandle( serverHandle );
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return FALSE;
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}
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//
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// Now read the response from the server.
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//
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totalBytesRead = 0;
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do {
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success = InternetReadFile(
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requestHandle,
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Buffer + totalBytesRead,
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BufferLength - totalBytesRead,
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&bytesRead
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);
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if ( !success ) {
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printf( "InternetReadFile failed after %ld bytes: %ld\n",
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totalBytesRead, GetLastError( ) );
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InternetCloseHandle( requestHandle );
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InternetCloseHandle( serverHandle );
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return FALSE;
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}
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totalBytesRead += bytesRead;
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} while ( bytesRead != 0 && totalBytesRead < BufferLength );
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//
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// Everything worked. Return the total number of bytes we read into
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// the caller's buffer. Note that we ignore the case when the
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// returned information is longer than caller's buffer.
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//
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*BytesRead = totalBytesRead;
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InternetCloseHandle( requestHandle );
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InternetCloseHandle( serverHandle );
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return TRUE;
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} // GetUrl
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