Start wxWebRequestWinHTTP implementation

Can already run the GET request in the sample app

include/wx/msw/webrequest_winhttp.h

@@ -10,17 +10,102 @@
 #ifndef _WX_MSW_WEBREQUEST_WINHTTP_H
 #define _WX_MSW_WEBREQUEST_WINHTTP_H
 
+#include "wx/msw/wrapwin.h"
+#include <winhttp.h>
+#include "wx/buffer.h"
+
+class wxWebSessionWinHTTP;
+class wxWebRequestWinHTTP;
+
+class WXDLLIMPEXP_NET wxWebResponseWinHTTP : public wxWebResponse
+{
+public:
+    wxWebResponseWinHTTP(wxWebRequestWinHTTP& request);
+
+    wxInt64 GetContentLength() const wxOVERRIDE { return m_contentLength; }
+
+    wxString GetURL() const wxOVERRIDE;
+
+    wxString GetHeader(const wxString& name) const wxOVERRIDE;
+
+    int GetStatus() const wxOVERRIDE;
+
+    wxString GetStatusText() const wxOVERRIDE;
+
+    wxInputStream* GetStream() const wxOVERRIDE;
+
+    wxString AsString(wxMBConv* conv = NULL) const wxOVERRIDE;
+
+    bool ReadData();
+
+    bool ReportAvailableData(DWORD dataLen);
+
+    void ReportDataComplete();
+
+private:
+    wxWebRequestWinHTTP& m_request;
+    wxInt64 m_contentLength;
+    long m_readSize;
+    wxMemoryBuffer m_readBuffer;
+    wxScopedPtr<wxInputStream> m_stream;
+
+    wxDECLARE_NO_COPY_CLASS(wxWebResponseWinHTTP);
+};
+
+class WXDLLIMPEXP_NET wxWebRequestWinHTTP : public wxWebRequest
+{
+public:
+    wxWebRequestWinHTTP(int id, wxWebSessionWinHTTP& session, const wxString& url);
+
+    ~wxWebRequestWinHTTP();
+
+    void SetMethod(const wxString& method) wxOVERRIDE;
+
+    void SetData(const wxString& text, const wxString& contentType) wxOVERRIDE;
+
+    void SetData(const wxInputStream& dataStream, const wxString& contentType) wxOVERRIDE;
+
+    void Start() wxOVERRIDE;
+
+    void Cancel() wxOVERRIDE;
+
+    wxWebResponse* GetResponse() wxOVERRIDE;
+
+    void HandleCallback(DWORD dwInternetStatus, LPVOID lpvStatusInformation,
+        DWORD dwStatusInformationLength);
+
+    HINTERNET GetHandle() const { return m_request; }
+
+private:
+    wxWebSessionWinHTTP& m_session;
+    wxString m_url;
+    HINTERNET m_connect;
+    HINTERNET m_request;
+    wxScopedPtr<wxWebResponseWinHTTP> m_response;
+
+    void SetFailedWithLastError();
+
+    wxDECLARE_NO_COPY_CLASS(wxWebRequestWinHTTP);
+};
+
 class WXDLLIMPEXP_NET wxWebSessionWinHTTP: public wxWebSession
 {
 public:
-    wxWebSessionWinHTTP() { }
+    wxWebSessionWinHTTP();
+
+    ~wxWebSessionWinHTTP();
 
     wxWebRequest* CreateRequest(const wxString& url, int id = wxID_ANY) wxOVERRIDE;
 
-    void SetHeader(const wxString& name, const wxString& value) wxOVERRIDE;
+    HINTERNET GetHandle() const { return m_handle; }
 
 private:
+    bool m_initialized;
+    HINTERNET m_handle;
 
+    void Init();
+
+    wxDECLARE_NO_COPY_CLASS(wxWebSessionWinHTTP);
 };
 
 class WXDLLIMPEXP_NET wxWebSessionFactoryWinHTTP: public wxWebSessionFactory