Knowledge Base Nr: 00239 webserver.cpp - http://www.swe-kaiser.de

MFC: einfacher Webserver
SocketServer mit MFC-Sockets für schnellen Zugriff und Befehlsabarbeitung in C++
z.b.: http://localhost:4711/testaufruf

  
#include "../cpp_classes/SocketSupport.h" //CSocketSupport : public CAsyncSocket

class CMySocketServer;

const UINT LISTENERPORT = 4711;
CMySocketServer* g_serversock = 0;

class CMySocketServer : public CSocketSupport
{
public:
  CRemotewebDlg* m_pDlg;

  CMySocketServer(CRemotewebDlg* pDlg) : CSocketSupport(true)
  {
    m_pDlg = pDlg;
  }

  virtual ~CMySocketServer() {}

  virtual void OnAccept(int nErrorCode)
  {
		CMySocketServer* pClientsock = new CMySocketServer(m_pDlg);
    BOOL bSucc = Accept(*pClientsock);
  }

  virtual void OnSocketReceive(const char* lpszData, int nDataLen)
  {
    DoCmd(lpszData);
  }

  void DoCmd(const char* lpszCmd);
};


void CMySocketServer::DoCmd(const char* lpszCmd)
{
  CString strAnswer;

  bool bNoContent = true;

  if (bNoContent)
  {
    strAnswer.Format(
            "HTTP/1.1 204 No Content\n\r"
            "Content-type: text/html\n\r"
            "Server: RemoteWeb 1.0\n\r"
            "Pragma: no-cache\n\r"
            "Cache-Control: no-cache, must-revalidate\n\r"
            "Expires: Thu, 01 Dec 1994 16:00:00 GMT\n\r"
            "\n\r");
  }
  else
  {
    strAnswer.Format(
            "HTTP/1.1 200 OK\n\r"
            "Content-type: text/html\n\r"
            "Server: RemoteWeb 1.0\n\r"
            "Pragma: no-cache\n\r"
            "Cache-Control: no-cache, must-revalidate\n\r"
            "Expires: Thu, 01 Dec 1994 16:00:00 GMT\n\r"
            "\n\r"
            ""
            "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">\n\r"
            "\n\r"
            "<html>\n\r"
            "<head>\n\r"
            " <title>Test RemoteWeb</title>\n\r"
            "</head>\n\r"
            "<body>\n\r"
            "<h1>Test RemoteWeb: %s</h1>\n\r"
            "</body>\n\r"
            "</html>\n\r"
            , lpszCmd);
  }

  int nSend = Send(strAnswer, strAnswer.GetLength());

  //wichtig - der browser wartet sonst ewig
  Close();
}

void CRemotewebDlg::OnButtonStart()
{
  OnStop();

  g_serversock = new CMySocketServer(this);

  BOOL bSucc = TRUE;

  bSucc = g_serversock->Create(LISTENERPORT);

  //zulassen: socket sofort wiederbenutzbar
  int i = 1;
  bSucc = g_serversock->SetSockOpt(SO_REUSEADDR, &i, sizeof(i));
  int i2 = 1;
  bSucc = g_serversock->SetSockOpt(SO_KEEPALIVE, &i2, sizeof(i2));

  bSucc = g_serversock->Listen(5);
}

void CRemotewebDlg::OnStop()
{
  if (g_serversock)
  {
    g_serversock->Close();
    delete g_serversock;
    g_serversock = 0;
  }
}

////////// bild schicken:
  if (bSendPic)
  {
    int nSizeBytes = 0;
    const int MAXPICSIZE = 800*600*3;
    unsigned char* pFileContent = new unsigned char[MAXPICSIZE];

    FILE* fp = fopen("e:/projects/internet/my_home/kaiserreich/images/k_images/dummy.jpg", "rb");
    if (fp)
    {
      nSizeBytes = fread(pFileContent, 1, MAXPICSIZE, fp);
      fclose(fp);
    }

    strAnswer.Format(
      "HTTP/1.1 200 OK\n"
      "Server: VideoWebServer 1.0\n"
      "Last-Modified: Tue, 22 Jun 2004 21:07:02 GMT\n"
      "Pragma: no-cache\n"
      "Cache-Control: no-cache, must-revalidate\n"
      "Expires: Thu, 01 Dec 1994 16:00:00 GMT\n"
      "Content-Length: %d\n"
      "Content-Type: image/jpeg\n"
      "\n"
      , nSizeBytes
      );

    nSend = Send(strAnswer, strAnswer.GetLength());   //header
    nSend = Send(pFileContent, nSizeBytes);           //bilddaten

    delete pFileContent;
  }

###### seite umlenken
  else if (bLocationHeader)
  {
    strAnswer.Format(
      "HTTP/1.1 302 Found\n"
      "Server: VideoWebServer 1.0\n"
      "Location: http://krserver/pda/p_weblivecam.php3\n"
      "Connection: close\n"
      "\n"
      );

    nSend = Send(strAnswer, strAnswer.GetLength());
  }

Knowledge Base Nr: 00239 webserver.cpp - http://www.swe-kaiser.de

MFC: einfacher WebserverSocketServer mit MFC-Sockets für schnellen Zugriff und Befehlsabarbeitung in C++z.b.: http://localhost:4711/testaufruf

MFC: einfacher Webserver
SocketServer mit MFC-Sockets für schnellen Zugriff und Befehlsabarbeitung in C++
z.b.: http://localhost:4711/testaufruf