我想在C++中使用WinHTTP獲取網頁的內容。 這是有點工作,除了我能夠查看部分源而不是整個源。C++ WinHTTP InternetReadFile不檢索整個源碼
OpenSSL的東西在那裏,因爲最終我希望能夠通過SSL做HTTP,但這是下一個挑戰。
#include <windows.h>
#include <Wininet.h>
#pragma comment(lib, "Crypt32.lib")
#pragma comment(lib, "wininet.lib")
bool SetupSSL(HINTERNET request)
{
HCERTSTORE store = CertOpenSystemStore(NULL,"CA");
DWORD ret = 0;
bool ok = false;
if(store==NULL)
return false;
PCCERT_CONTEXT context = CertFindCertificateInStore(store,X509_ASN_ENCODING,0,CERT_FIND_SUBJECT_STR,L"WebClient",NULL);
if(context!=NULL)
{
ok = InternetSetOption(request,INTERNET_OPTION_CLIENT_CERT_CONTEXT,(LPVOID)context,sizeof(CERT_CONTEXT))==TRUE;
if(!ok)
ret = GetLastError();
CertFreeCertificateContext(context);
}
MessageBoxA(0, "1", 0, 0);
CertCloseStore(store,0);
return ok;
};
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
HINTERNET hint = InternetOpen("WebTestClient",INTERNET_OPEN_TYPE_DIRECT,NULL,NULL,0);
if(hint!=NULL)
{
//InternetSetStatusCallback(hint,&HTTPStatusCallbackFunc);
HINTERNET hsession = InternetConnect(hint,"encrypted.google.com",443,NULL,NULL,3,0,NULL);
if(hsession!=NULL)
{
HINTERNET hreqest = HttpOpenRequest(hsession,"GET","/","HTTP/1.1",NULL,NULL,INTERNET_FLAG_SECURE|INTERNET_FLAG_NO_AUTH,NULL);
if(hreqest!=NULL)
{
//if(SetupSSL(hreqest))
//{
if(HttpSendRequest(hreqest,NULL,0, NULL, 0))
{
//char szResponse[1024] = "";
char szBuffer[1024] = "";
DWORD dwRead=0;
while(InternetReadFile(hreqest, szBuffer, sizeof(szBuffer)-1, &dwRead) && dwRead)
{
//strcat(szBuffer, szResponse);
szBuffer[dwRead] = 0;
OutputDebugStringA(szBuffer);
dwRead=0;
}
//InternetReadFile(hreqest, szBuffer, sizeof(szBuffer)-1, &dwRead);
MessageBoxA(0, szBuffer, 0, 0); // Only shows the first part of the source.
}
//}
//else
//{
//MessageBoxA(0, "SetupSSL failed", 0, 0);
//}
InternetCloseHandle(hreqest);
}
InternetCloseHandle(hsession);
}
InternetCloseHandle(hint);
}
return 0;
}
OutPutDebugStringA正在將整個源輸出到調試控制檯,因此它已準備就緒。只是不把它全部存儲在szBuffer變量中。我認爲這可能與循環有關。
您是否在循環中抱怨您自己的覆蓋'szBuffer',以便您可以在調試輸出中看到完整的內容,並且只能看到消息框的最後一部分? –
即使我註釋掉szBuffer [dwRead] = 0;我仍然只能使用MessageBox – SnakeByte