winhttp 发送 get 请求「建议收藏」

void 

 getRequest(){

DWORD

 dwSize = 0;

DWORD

 dwDownloaded = 0;

LPSTR

 pszOutBuffer;

BOOL

 bResults = FALSE;

HINTERNET hSession = NULL,

hConnect = NULL,

hRequest = NULL;
  
hSession = WinHttpOpen(L

"A WinHTTP Example Program/1.0"

,

WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,

WINHTTP_NO_PROXY_NAME,

WINHTTP_NO_PROXY_BYPASS, 0);
  
if

 (hSession)

hConnect = WinHttpConnect(hSession, L

"oschina.net"

,

INTERNET_DEFAULT_HTTP_PORT, 0);
  
if

 (hConnect)

hRequest = WinHttpOpenRequest(hConnect, L

"GET"

,

L

"/search?q=python"

,

NULL, WINHTTP_NO_REFERER,

WINHTTP_DEFAULT_ACCEPT_TYPES,

0);
  
if

 (hRequest)

bResults = WinHttpSendRequest(hRequest,

WINHTTP_NO_ADDITIONAL_HEADERS,

0, WINHTTP_NO_REQUEST_DATA, 0,

0, 0);
  
if

 (bResults)

bResults = WinHttpReceiveResponse(hRequest, NULL);
  
if

 (bResults)

{

do

{

dwSize = 0;

if

 (!WinHttpQueryDataAvailable(hRequest, &dwSize))

printf

(

"Error %u in WinHttpQueryDataAvailable.\n"

,

GetLastError());
  
pszOutBuffer = 

new

 char

[dwSize+1];
  
ZeroMemory(pszOutBuffer, dwSize+1);
  
if

 (!WinHttpReadData(hRequest, (

LPVOID

)pszOutBuffer,

dwSize, &dwDownloaded))

printf

(

"Error %u in WinHttpReadData.\n"

, GetLastError());

else

printf

(

"%s\n"

, pszOutBuffer);
  
delete

[] pszOutBuffer;

} 

while

 (dwSize > 0);

}
  
if

 (!bResults)

printf

(

"Error %d has occurred.\n"

, GetLastError());
  
if

 (hRequest) WinHttpCloseHandle(hRequest);

if

 (hConnect) WinHttpCloseHandle(hConnect);

if

 (hSession) WinHttpCloseHandle(hSession);

}