Joe Danlloh / lwip

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trunk/HTTPServer/HTTPStaticPage.h@0:5e1631496985, 2012-05-08 (annotated)

Committer:
root@mbed.org
Date:
Tue May 08 15:32:10 2012 +0100
Revision:
0:5e1631496985
initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
root@mbed.org 0:5e1631496985 1 #ifndef HTTPSTATICPAGE_H
root@mbed.org 0:5e1631496985 2 #define HTTPSTATICPAGE_H
root@mbed.org 0:5e1631496985 3
root@mbed.org 0:5e1631496985 4 #include "HTTPServer.h"
root@mbed.org 0:5e1631496985 5
root@mbed.org 0:5e1631496985 6 /**
root@mbed.org 0:5e1631496985 7 * A datastorage helper for the HTTPStaticPage class.
root@mbed.org 0:5e1631496985 8 * Stores only the left upload size.
root@mbed.org 0:5e1631496985 9 */
root@mbed.org 0:5e1631496985 10 class HTTPStaticPageData : public HTTPData {
root@mbed.org 0:5e1631496985 11 public: int left;
root@mbed.org 0:5e1631496985 12 };
root@mbed.org 0:5e1631496985 13
root@mbed.org 0:5e1631496985 14 /**
root@mbed.org 0:5e1631496985 15 * This class Provide a Handler to send Static HTTP Pages from the bin file.
root@mbed.org 0:5e1631496985 16 */
root@mbed.org 0:5e1631496985 17 class HTTPStaticPage : public HTTPHandler {
root@mbed.org 0:5e1631496985 18 public:
root@mbed.org 0:5e1631496985 19 /**
root@mbed.org 0:5e1631496985 20 * Constructer takes the pagename and the pagedata.
root@mbed.org 0:5e1631496985 21 * As long as the pagedata is NULL terminated you have not to tell the data length.
root@mbed.org 0:5e1631496985 22 * But if you want to send binary data you should tell us the size.
root@mbed.org 0:5e1631496985 23 */
root@mbed.org 0:5e1631496985 24 HTTPStaticPage(const char *path, const char *page, int length = 0)
root@mbed.org 0:5e1631496985 25 : HTTPHandler(path), _page(page) {
root@mbed.org 0:5e1631496985 26 _size = (length)?length:strlen(_page);
root@mbed.org 0:5e1631496985 27 }
root@mbed.org 0:5e1631496985 28
root@mbed.org 0:5e1631496985 29 HTTPStaticPage(HTTPServer *server, const char *path, const char *page, int length = 0)
root@mbed.org 0:5e1631496985 30 : HTTPHandler(path), _page(page) {
root@mbed.org 0:5e1631496985 31 _size = (length)?length:strlen(_page);
root@mbed.org 0:5e1631496985 32 server->addHandler(this);
root@mbed.org 0:5e1631496985 33 }
root@mbed.org 0:5e1631496985 34
root@mbed.org 0:5e1631496985 35 private:
root@mbed.org 0:5e1631496985 36 /**
root@mbed.org 0:5e1631496985 37 * A this Static Page is requested!
root@mbed.org 0:5e1631496985 38 * Prepare a datastorage helper "HTTPStaticPageHelper" to store the left data size.
root@mbed.org 0:5e1631496985 39 * And return HTTP_OK
root@mbed.org 0:5e1631496985 40 */
root@mbed.org 0:5e1631496985 41 virtual HTTPStatus init(HTTPConnection *con) const {
root@mbed.org 0:5e1631496985 42 HTTPStaticPageData *data = new HTTPStaticPageData();
root@mbed.org 0:5e1631496985 43 con->data = data;
root@mbed.org 0:5e1631496985 44 data->left = _size;
root@mbed.org 0:5e1631496985 45 con->setLength(_size);
root@mbed.org 0:5e1631496985 46 return HTTP_OK;
root@mbed.org 0:5e1631496985 47 }
root@mbed.org 0:5e1631496985 48
root@mbed.org 0:5e1631496985 49 /**
root@mbed.org 0:5e1631496985 50 * Send the maximum data out to the client.
root@mbed.org 0:5e1631496985 51 * If the file is complete transmitted close connection by returning HTTP_SuccessEnded
root@mbed.org 0:5e1631496985 52 */
root@mbed.org 0:5e1631496985 53 virtual HTTPHandle send(HTTPConnection *con, int maximum) const {
root@mbed.org 0:5e1631496985 54 HTTPStaticPageData *data = static_cast<HTTPStaticPageData *>(con->data);
root@mbed.org 0:5e1631496985 55 int len = min(maximum, data->left);
root@mbed.org 0:5e1631496985 56 err_t err;
root@mbed.org 0:5e1631496985 57
root@mbed.org 0:5e1631496985 58 do {
root@mbed.org 0:5e1631496985 59 err = con->write((void*)&_page[_size - data->left], len, 1);
root@mbed.org 0:5e1631496985 60 if(err == ERR_MEM) {
root@mbed.org 0:5e1631496985 61 len >>= 1;
root@mbed.org 0:5e1631496985 62 }
root@mbed.org 0:5e1631496985 63 } while(err == ERR_MEM && len > 1);
root@mbed.org 0:5e1631496985 64 if(err == ERR_OK) {
root@mbed.org 0:5e1631496985 65 data->left -= len;
root@mbed.org 0:5e1631496985 66 }
root@mbed.org 0:5e1631496985 67
root@mbed.org 0:5e1631496985 68 return (data->left)? HTTP_Success : HTTP_SuccessEnded;
root@mbed.org 0:5e1631496985 69 }
root@mbed.org 0:5e1631496985 70
root@mbed.org 0:5e1631496985 71 /** Pointer to the page data */
root@mbed.org 0:5e1631496985 72 const char *_page;
root@mbed.org 0:5e1631496985 73
root@mbed.org 0:5e1631496985 74 /** page data size*/
root@mbed.org 0:5e1631496985 75 int _size;
root@mbed.org 0:5e1631496985 76 };
root@mbed.org 0:5e1631496985 77
root@mbed.org 0:5e1631496985 78 #endif