John Lowe
/
WebSockets2
Embedded WebSockets Experiment
HTTPServer/HTTPStaticPage.h
- Committer:
- nandgate
- Date:
- 2011-07-26
- Revision:
- 0:6dee052a3fa4
File content as of revision 0:6dee052a3fa4:
#ifndef HTTPSTATICPAGE_H #define HTTPSTATICPAGE_H #include "HTTPServer.h" /** * A datastorage helper for the HTTPStaticPage class. * Stores only the left upload size. */ class HTTPStaticPageData : public HTTPData { public: int left; }; /** * This class Provide a Handler to send Static HTTP Pages from the bin file. */ class HTTPStaticPage : public HTTPHandler { public: /** * Constructer takes the pagename and the pagedata. * As long as the pagedata is NULL terminated you have not to tell the data length. * But if you want to send binary data you should tell us the size. */ HTTPStaticPage(const char *path, const char *page, int length = 0) : HTTPHandler(path), _page(page) { _size = (length)?length:strlen(_page); } HTTPStaticPage(HTTPServer *server, const char *path, const char *page, int length = 0) : HTTPHandler(path), _page(page) { _size = (length)?length:strlen(_page); server->addHandler(this); } private: /** * A this Static Page is requested! * Prepare a datastorage helper "HTTPStaticPageHelper" to store the left data size. * And return HTTP_OK */ virtual HTTPStatus init(HTTPConnection *con) const { HTTPStaticPageData *data = new HTTPStaticPageData(); con->data = data; data->left = _size; con->setLength(_size); return HTTP_OK; } /** * Send the maximum data out to the client. * If the file is complete transmitted close connection by returning HTTP_SuccessEnded */ virtual HTTPHandle send(HTTPConnection *con, int maximum) const { HTTPStaticPageData *data = static_cast<HTTPStaticPageData *>(con->data); int len = min(maximum, data->left); err_t err; do { err = con->write((void*)&_page[_size - data->left], len, 1); if(err == ERR_MEM) { len >>= 1; } } while(err == ERR_MEM && len > 1); if(err == ERR_OK) { data->left -= len; } return (data->left)? HTTP_Success : HTTP_SuccessEnded; } /** Pointer to the page data */ const char *_page; /** page data size*/ int _size; }; #endif