Confirmed users, Bureaucrats and Sysops emeriti
1,680
edits
NPAPI:HTTPRedirectHandling: Difference between revisions
Jump to navigation
Jump to search
→Specification
| Line 29: | Line 29: | ||
* url: the new target url for the redirect | * url: the new target url for the redirect | ||
* status: the status code returned from the server (will be 3xx) | * status: the status code returned from the server (will be 3xx) | ||
* notifyData: the data passed into NPN_PostURLNotify | * notifyData: the data passed into 'NPN_PostURLNotify' or 'NPN_GetURLNotify' | ||
* callback: the address of a callback function for asynchronous responses | * callback: the address of a callback function for asynchronous responses | ||
| Line 36: | Line 36: | ||
NPVERS_HAS_HTTP_REDIRECT_HANDLER = 26 | NPVERS_HAS_HTTP_REDIRECT_HANDLER = 26 | ||
The slot for this handler in the plugin function structure can be NULL. If this function is not provided then redirect behavior is up to the browser. The recommended default behavior is to allow all same-origin redirects and disallow all cross-origin redirects. | The slot for this handler in the plugin function structure can be 'NULL'. If this function is not provided then redirect behavior is up to the browser. The recommended default behavior is to allow all same-origin redirects and disallow all cross-origin redirects. | ||
Plugins have the option of synchronously or asynchronously responding to the redirect notification. | Plugins have the option of synchronously or asynchronously responding to the redirect notification. | ||
Returning | Returning 'NPERR_NO_ERR' will synchronously allow the redirect, returning 'NPERR_INVALID_URL' will synchronously disallow the redirect. To respond asynchronously via the provided callback function plugins can return a newly defined error: | ||
#define NPERR_ASYNC_RESPONSE (NPERR_BASE + 14) | #define NPERR_ASYNC_RESPONSE (NPERR_BASE + 14) | ||
Network requests may time out if an asynchronous response is not received in a reasonable amount of time | Network requests may time out if an asynchronous response is not received in a reasonable amount of time. | ||
There may be further redirect notifications when a redirect is allowed. When a redirect is disallowed the browser will subsequently issue an | There may be further redirect notifications when a redirect is allowed. When a redirect is disallowed or an asynchronous redirect response is not received within a reasonable amount of time the browser will subsequently issue an 'NPP_URLNotify' call with reason 'NPRES_USER_BREAK' and the last allowed or original url. | ||
Plugins can query the browser for support for this specification using the following variable: | Plugins can query the browser for support for this specification using the following variable: | ||