Mitesh Patel
this will take a image from C328 serial camera and store those images in mbed flash as html and this html page is uploaded into the server at ip:192.168.1.2
HTTPDynamicPage.h@0:e1a0471e5ffb, 2010-12-15 (annotated)
- Committer:
- mitesh2patel
- Date:
- Wed Dec 15 15:01:56 2010 +0000
- Revision:
- 0:e1a0471e5ffb
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mitesh2patel | 0:e1a0471e5ffb | 1 | #ifndef HTTPDYNAMICPAGE_H |
| mitesh2patel | 0:e1a0471e5ffb | 2 | #define HTTPDYNAMICPAGE_H |
| mitesh2patel | 0:e1a0471e5ffb | 3 | |
| mitesh2patel | 0:e1a0471e5ffb | 4 | #include "HTTPServer.h" |
| mitesh2patel | 0:e1a0471e5ffb | 5 | |
| mitesh2patel | 0:e1a0471e5ffb | 6 | /** |
| mitesh2patel | 0:e1a0471e5ffb | 7 | * A datastorage helper for the HTTPDynamicPage class. |
| mitesh2patel | 0:e1a0471e5ffb | 8 | * Stores dynamically created page data and the size left to upload. |
| mitesh2patel | 0:e1a0471e5ffb | 9 | */ |
| mitesh2patel | 0:e1a0471e5ffb | 10 | class HTTPDynamicPageData : public HTTPData { |
| mitesh2patel | 0:e1a0471e5ffb | 11 | public: |
| mitesh2patel | 0:e1a0471e5ffb | 12 | HTTPDynamicPageData() |
| mitesh2patel | 0:e1a0471e5ffb | 13 | : page_free(NULL), page(NULL), size(0), _left(0) {} |
| mitesh2patel | 0:e1a0471e5ffb | 14 | virtual ~HTTPDynamicPageData() { |
| mitesh2patel | 0:e1a0471e5ffb | 15 | if (page_free && page) { |
| mitesh2patel | 0:e1a0471e5ffb | 16 | page_free(page); |
| mitesh2patel | 0:e1a0471e5ffb | 17 | } |
| mitesh2patel | 0:e1a0471e5ffb | 18 | } |
| mitesh2patel | 0:e1a0471e5ffb | 19 | |
| mitesh2patel | 0:e1a0471e5ffb | 20 | /** Pointer to garbage collection function (for freeing page data) |
| mitesh2patel | 0:e1a0471e5ffb | 21 | * Should be set by callback function to a suitable free() if page is dynamically allocated |
| mitesh2patel | 0:e1a0471e5ffb | 22 | */ |
| mitesh2patel | 0:e1a0471e5ffb | 23 | void (*page_free)(void *page); |
| mitesh2patel | 0:e1a0471e5ffb | 24 | |
| mitesh2patel | 0:e1a0471e5ffb | 25 | /** Pointer to the page data */ |
| mitesh2patel | 0:e1a0471e5ffb | 26 | char *page; |
| mitesh2patel | 0:e1a0471e5ffb | 27 | |
| mitesh2patel | 0:e1a0471e5ffb | 28 | /** Page data size |
| mitesh2patel | 0:e1a0471e5ffb | 29 | * As long as the page is NULL terminated you don't have to tell the data length. |
| mitesh2patel | 0:e1a0471e5ffb | 30 | * But if you want to send binary data you should tell us the size. |
| mitesh2patel | 0:e1a0471e5ffb | 31 | */ |
| mitesh2patel | 0:e1a0471e5ffb | 32 | int size; |
| mitesh2patel | 0:e1a0471e5ffb | 33 | |
| mitesh2patel | 0:e1a0471e5ffb | 34 | /** Page data size left for the upload */ |
| mitesh2patel | 0:e1a0471e5ffb | 35 | int _left; |
| mitesh2patel | 0:e1a0471e5ffb | 36 | }; |
| mitesh2patel | 0:e1a0471e5ffb | 37 | |
| mitesh2patel | 0:e1a0471e5ffb | 38 | /** |
| mitesh2patel | 0:e1a0471e5ffb | 39 | * This class Provide a Handler to send Static HTTP Pages from the bin file. |
| mitesh2patel | 0:e1a0471e5ffb | 40 | */ |
| mitesh2patel | 0:e1a0471e5ffb | 41 | class HTTPDynamicPage : public HTTPHandler { |
| mitesh2patel | 0:e1a0471e5ffb | 42 | public: |
| mitesh2patel | 0:e1a0471e5ffb | 43 | /** |
| mitesh2patel | 0:e1a0471e5ffb | 44 | * Constructor takes the page path and the page callback function. |
| mitesh2patel | 0:e1a0471e5ffb | 45 | */ |
| mitesh2patel | 0:e1a0471e5ffb | 46 | HTTPDynamicPage(const char *path, HTTPStatus page_fnc(HTTPConnection *con, HTTPDynamicPageData *pd)) |
| mitesh2patel | 0:e1a0471e5ffb | 47 | : HTTPHandler(path), _page_fnc(page_fnc) { |
| mitesh2patel | 0:e1a0471e5ffb | 48 | } |
| mitesh2patel | 0:e1a0471e5ffb | 49 | |
| mitesh2patel | 0:e1a0471e5ffb | 50 | HTTPDynamicPage(HTTPServer *server, const char *path, HTTPStatus page_fnc(HTTPConnection *con, HTTPDynamicPageData *pd)) |
| mitesh2patel | 0:e1a0471e5ffb | 51 | : HTTPHandler(path), _page_fnc(page_fnc) { |
| mitesh2patel | 0:e1a0471e5ffb | 52 | server->addHandler(this); |
| mitesh2patel | 0:e1a0471e5ffb | 53 | } |
| mitesh2patel | 0:e1a0471e5ffb | 54 | |
| mitesh2patel | 0:e1a0471e5ffb | 55 | private: |
| mitesh2patel | 0:e1a0471e5ffb | 56 | /** |
| mitesh2patel | 0:e1a0471e5ffb | 57 | * This Dynamic Page is requested! |
| mitesh2patel | 0:e1a0471e5ffb | 58 | * Prepare a datastorage helper "HTTPDynamicPageData", create the page and store in helper, then initialize remaining data size. |
| mitesh2patel | 0:e1a0471e5ffb | 59 | * And return HTTP_OK if all ok. |
| mitesh2patel | 0:e1a0471e5ffb | 60 | */ |
| mitesh2patel | 0:e1a0471e5ffb | 61 | virtual HTTPStatus init(HTTPConnection *con) const { |
| mitesh2patel | 0:e1a0471e5ffb | 62 | HTTPDynamicPageData *data = new HTTPDynamicPageData(); |
| mitesh2patel | 0:e1a0471e5ffb | 63 | con->data = data; |
| mitesh2patel | 0:e1a0471e5ffb | 64 | HTTPStatus status = _page_fnc(con, data); // assigns data->page, data->size and optionally data->page_free |
| mitesh2patel | 0:e1a0471e5ffb | 65 | if (!data->size && data->page) |
| mitesh2patel | 0:e1a0471e5ffb | 66 | data->size = strlen(data->page); |
| mitesh2patel | 0:e1a0471e5ffb | 67 | data->_left = data->size; |
| mitesh2patel | 0:e1a0471e5ffb | 68 | con->setLength(data->size); |
| mitesh2patel | 0:e1a0471e5ffb | 69 | return status; |
| mitesh2patel | 0:e1a0471e5ffb | 70 | } |
| mitesh2patel | 0:e1a0471e5ffb | 71 | |
| mitesh2patel | 0:e1a0471e5ffb | 72 | /** |
| mitesh2patel | 0:e1a0471e5ffb | 73 | * Send the maximum data out to the client. |
| mitesh2patel | 0:e1a0471e5ffb | 74 | * If the file is complete transmitted close connection by returning HTTP_SuccessEnded |
| mitesh2patel | 0:e1a0471e5ffb | 75 | */ |
| mitesh2patel | 0:e1a0471e5ffb | 76 | virtual HTTPHandle send(HTTPConnection *con, int maximum) const { |
| mitesh2patel | 0:e1a0471e5ffb | 77 | HTTPDynamicPageData *data = static_cast<HTTPDynamicPageData *>(con->data); |
| mitesh2patel | 0:e1a0471e5ffb | 78 | int len = min(maximum, data->_left); |
| mitesh2patel | 0:e1a0471e5ffb | 79 | err_t err; |
| mitesh2patel | 0:e1a0471e5ffb | 80 | |
| mitesh2patel | 0:e1a0471e5ffb | 81 | do { |
| mitesh2patel | 0:e1a0471e5ffb | 82 | err = con->write((void*)&data->page[data->size - data->_left], len, 1); |
| mitesh2patel | 0:e1a0471e5ffb | 83 | if (err == ERR_MEM) { |
| mitesh2patel | 0:e1a0471e5ffb | 84 | len >>= 1; |
| mitesh2patel | 0:e1a0471e5ffb | 85 | } |
| mitesh2patel | 0:e1a0471e5ffb | 86 | } while(err == ERR_MEM && len > 1); |
| mitesh2patel | 0:e1a0471e5ffb | 87 | if (err == ERR_OK) { |
| mitesh2patel | 0:e1a0471e5ffb | 88 | data->_left -= len; |
| mitesh2patel | 0:e1a0471e5ffb | 89 | } |
| mitesh2patel | 0:e1a0471e5ffb | 90 | return (data->_left) ? HTTP_Success : HTTP_SuccessEnded; |
| mitesh2patel | 0:e1a0471e5ffb | 91 | } |
| mitesh2patel | 0:e1a0471e5ffb | 92 | |
| mitesh2patel | 0:e1a0471e5ffb | 93 | HTTPStatus (*_page_fnc)(HTTPConnection *con, HTTPDynamicPageData *pd); |
| mitesh2patel | 0:e1a0471e5ffb | 94 | }; |
| mitesh2patel | 0:e1a0471e5ffb | 95 | |
| mitesh2patel | 0:e1a0471e5ffb | 96 | #endif |