John Lowe
Embedded WebSockets Experiment
HTTPServer/HTTPStaticPage.h@0:6dee052a3fa4, 2011-07-26 (annotated)
- Committer:
- nandgate
- Date:
- Tue Jul 26 05:30:53 2011 +0000
- Revision:
- 0:6dee052a3fa4
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| nandgate | 0:6dee052a3fa4 | 1 | #ifndef HTTPSTATICPAGE_H |
| nandgate | 0:6dee052a3fa4 | 2 | #define HTTPSTATICPAGE_H |
| nandgate | 0:6dee052a3fa4 | 3 | |
| nandgate | 0:6dee052a3fa4 | 4 | #include "HTTPServer.h" |
| nandgate | 0:6dee052a3fa4 | 5 | |
| nandgate | 0:6dee052a3fa4 | 6 | /** |
| nandgate | 0:6dee052a3fa4 | 7 | * A datastorage helper for the HTTPStaticPage class. |
| nandgate | 0:6dee052a3fa4 | 8 | * Stores only the left upload size. |
| nandgate | 0:6dee052a3fa4 | 9 | */ |
| nandgate | 0:6dee052a3fa4 | 10 | class HTTPStaticPageData : public HTTPData { |
| nandgate | 0:6dee052a3fa4 | 11 | public: int left; |
| nandgate | 0:6dee052a3fa4 | 12 | }; |
| nandgate | 0:6dee052a3fa4 | 13 | |
| nandgate | 0:6dee052a3fa4 | 14 | /** |
| nandgate | 0:6dee052a3fa4 | 15 | * This class Provide a Handler to send Static HTTP Pages from the bin file. |
| nandgate | 0:6dee052a3fa4 | 16 | */ |
| nandgate | 0:6dee052a3fa4 | 17 | class HTTPStaticPage : public HTTPHandler { |
| nandgate | 0:6dee052a3fa4 | 18 | public: |
| nandgate | 0:6dee052a3fa4 | 19 | /** |
| nandgate | 0:6dee052a3fa4 | 20 | * Constructer takes the pagename and the pagedata. |
| nandgate | 0:6dee052a3fa4 | 21 | * As long as the pagedata is NULL terminated you have not to tell the data length. |
| nandgate | 0:6dee052a3fa4 | 22 | * But if you want to send binary data you should tell us the size. |
| nandgate | 0:6dee052a3fa4 | 23 | */ |
| nandgate | 0:6dee052a3fa4 | 24 | HTTPStaticPage(const char *path, const char *page, int length = 0) |
| nandgate | 0:6dee052a3fa4 | 25 | : HTTPHandler(path), _page(page) { |
| nandgate | 0:6dee052a3fa4 | 26 | _size = (length)?length:strlen(_page); |
| nandgate | 0:6dee052a3fa4 | 27 | } |
| nandgate | 0:6dee052a3fa4 | 28 | |
| nandgate | 0:6dee052a3fa4 | 29 | HTTPStaticPage(HTTPServer *server, const char *path, const char *page, int length = 0) |
| nandgate | 0:6dee052a3fa4 | 30 | : HTTPHandler(path), _page(page) { |
| nandgate | 0:6dee052a3fa4 | 31 | _size = (length)?length:strlen(_page); |
| nandgate | 0:6dee052a3fa4 | 32 | server->addHandler(this); |
| nandgate | 0:6dee052a3fa4 | 33 | } |
| nandgate | 0:6dee052a3fa4 | 34 | |
| nandgate | 0:6dee052a3fa4 | 35 | private: |
| nandgate | 0:6dee052a3fa4 | 36 | /** |
| nandgate | 0:6dee052a3fa4 | 37 | * A this Static Page is requested! |
| nandgate | 0:6dee052a3fa4 | 38 | * Prepare a datastorage helper "HTTPStaticPageHelper" to store the left data size. |
| nandgate | 0:6dee052a3fa4 | 39 | * And return HTTP_OK |
| nandgate | 0:6dee052a3fa4 | 40 | */ |
| nandgate | 0:6dee052a3fa4 | 41 | virtual HTTPStatus init(HTTPConnection *con) const { |
| nandgate | 0:6dee052a3fa4 | 42 | HTTPStaticPageData *data = new HTTPStaticPageData(); |
| nandgate | 0:6dee052a3fa4 | 43 | con->data = data; |
| nandgate | 0:6dee052a3fa4 | 44 | data->left = _size; |
| nandgate | 0:6dee052a3fa4 | 45 | con->setLength(_size); |
| nandgate | 0:6dee052a3fa4 | 46 | return HTTP_OK; |
| nandgate | 0:6dee052a3fa4 | 47 | } |
| nandgate | 0:6dee052a3fa4 | 48 | |
| nandgate | 0:6dee052a3fa4 | 49 | /** |
| nandgate | 0:6dee052a3fa4 | 50 | * Send the maximum data out to the client. |
| nandgate | 0:6dee052a3fa4 | 51 | * If the file is complete transmitted close connection by returning HTTP_SuccessEnded |
| nandgate | 0:6dee052a3fa4 | 52 | */ |
| nandgate | 0:6dee052a3fa4 | 53 | virtual HTTPHandle send(HTTPConnection *con, int maximum) const { |
| nandgate | 0:6dee052a3fa4 | 54 | HTTPStaticPageData *data = static_cast<HTTPStaticPageData *>(con->data); |
| nandgate | 0:6dee052a3fa4 | 55 | int len = min(maximum, data->left); |
| nandgate | 0:6dee052a3fa4 | 56 | err_t err; |
| nandgate | 0:6dee052a3fa4 | 57 | |
| nandgate | 0:6dee052a3fa4 | 58 | do { |
| nandgate | 0:6dee052a3fa4 | 59 | err = con->write((void*)&_page[_size - data->left], len, 1); |
| nandgate | 0:6dee052a3fa4 | 60 | if(err == ERR_MEM) { |
| nandgate | 0:6dee052a3fa4 | 61 | len >>= 1; |
| nandgate | 0:6dee052a3fa4 | 62 | } |
| nandgate | 0:6dee052a3fa4 | 63 | } while(err == ERR_MEM && len > 1); |
| nandgate | 0:6dee052a3fa4 | 64 | if(err == ERR_OK) { |
| nandgate | 0:6dee052a3fa4 | 65 | data->left -= len; |
| nandgate | 0:6dee052a3fa4 | 66 | } |
| nandgate | 0:6dee052a3fa4 | 67 | |
| nandgate | 0:6dee052a3fa4 | 68 | return (data->left)? HTTP_Success : HTTP_SuccessEnded; |
| nandgate | 0:6dee052a3fa4 | 69 | } |
| nandgate | 0:6dee052a3fa4 | 70 | |
| nandgate | 0:6dee052a3fa4 | 71 | /** Pointer to the page data */ |
| nandgate | 0:6dee052a3fa4 | 72 | const char *_page; |
| nandgate | 0:6dee052a3fa4 | 73 | |
| nandgate | 0:6dee052a3fa4 | 74 | /** page data size*/ |
| nandgate | 0:6dee052a3fa4 | 75 | int _size; |
| nandgate | 0:6dee052a3fa4 | 76 | }; |
| nandgate | 0:6dee052a3fa4 | 77 | |
| nandgate | 0:6dee052a3fa4 | 78 | #endif |