1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
#define WIN32_MEAN_AND_LEAN
#include <windows.h>
#include <WinHttp.h>
#include <iostream>
#include <string>
using namespace std;
int main( void )
{
HINTERNET session = WinHttpOpen( L"WinHTTP crawler/0.0.1",
WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,
WINHTTP_NO_PROXY_NAME,
WINHTTP_NO_PROXY_BYPASS, 0 );
if( !session ) {
cerr << "WinHttpOpen failed: " << GetLastError( ) << endl;
return 1;
}
HINTERNET connect = WinHttpConnect( session, L"www.andreasbaumann.cc",
INTERNET_DEFAULT_HTTP_PORT, 0 );
if( !connect ) {
cerr << "WinHttpConnect failed: " << GetLastError( ) << endl;
WinHttpCloseHandle( session );
return 1;
}
HINTERNET request = WinHttpOpenRequest( connect, L"GET", L"/index.shtml",
NULL, WINHTTP_NO_REFERER, NULL, NULL );
if( !request ) {
cerr << "WinHttpOpenRequest failed: " << GetLastError( ) << endl;
WinHttpCloseHandle( request );
WinHttpCloseHandle( session );
return 1;
}
if( !WinHttpSendRequest( request, WINHTTP_NO_ADDITIONAL_HEADERS,
0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0 ) ) {
cerr << "WinHttpSendRequest failed: " << GetLastError( ) << endl;
WinHttpCloseHandle( connect );
WinHttpCloseHandle( request );
WinHttpCloseHandle( session );
return 1;
}
if( !WinHttpReceiveResponse( request, NULL ) ) {
cerr << "WinHttpReceiveResponse failed: " << GetLastError( ) << endl;
WinHttpCloseHandle( connect );
WinHttpCloseHandle( request );
WinHttpCloseHandle( session );
return 1;
}
DWORD size;
string content;
size_t pos = 0;
do {
size = 0;
if( !WinHttpQueryDataAvailable( request, &size ) ) {
cerr << "WinHttpQueryDataAvailable failed: " << GetLastError( ) << endl;
WinHttpCloseHandle( connect );
WinHttpCloseHandle( request );
WinHttpCloseHandle( session );
return 1;
}
LPSTR buf = new char[size+1];
if( !buf ) {
cerr << "Out of memory allocating receive buffer" << endl;
WinHttpCloseHandle( connect );
WinHttpCloseHandle( request );
WinHttpCloseHandle( session );
return 1;
}
ZeroMemory( buf, size+1 );
DWORD received;
if( !WinHttpReadData( request, (LPVOID)buf, size, &received ) ) {
cerr << "WinHttpReadData failed: " << GetLastError( ) << endl;
WinHttpCloseHandle( connect );
WinHttpCloseHandle( request );
WinHttpCloseHandle( session );
return 1;
}
content.insert( pos, buf, received );
pos += received;
delete buf;
} while( size > 0 );
cout << "Received bytes: " << content.size( ) << endl;
cout << content << endl;
WinHttpCloseHandle( request );
WinHttpCloseHandle( connect );
WinHttpCloseHandle( session );
return 0;
}
|
