Mark all served documents as "Cache-control: no-cache". This can be useful for embedded applications where caching is very unlikely to be beneficial and very likely to result in confused users, e.g.: private network; single, local client; infrequent client->server visits; small pages....
Signed-off-by: Joshua Judson Rosen <[email protected]> --- networking/Config.src | 11 +++++++++++ networking/httpd.c | 5 +++++ 2 files changed, 16 insertions(+) diff --git a/networking/Config.src b/networking/Config.src index e566469..31ff982 100644 --- a/networking/Config.src +++ b/networking/Config.src @@ -181,6 +181,17 @@ config FEATURE_HTTPD_RANGES "Range: bytes=NNN-[MMM]" header. Allows for resuming interrupted downloads, seeking in multimedia players etc. +config FEATURE_HTTPD_NOCACHE + bool "Cache-control: no-cache" + default n + help + Makes httpd mark all served documents as "Cache-control: no-cache". + This can be useful for embedded applications where caching is + very unlikely to be beneficial and very likely to result + in confused users, e.g.: private network; single, local client; + infrequent client->erver visits; small pages; almost all + pages actually CGI scripts.... + config FEATURE_HTTPD_USE_SENDFILE bool "Use sendfile system call" default y diff --git a/networking/httpd.c b/networking/httpd.c index 621d9cd..bbccf30 100644 --- a/networking/httpd.c +++ b/networking/httpd.c @@ -1007,6 +1007,11 @@ static void send_headers(int responseNum) content_gzip ? "Transfer-length:" : "Content-length:", file_size ); + +#if ENABLE_FEATURE_HTTPD_NOCACHE + len += sprintf(iobuf + len, + "Cache-control: no-cache\r\n"); +#endif } if (content_gzip) -- 1.7.10.4 _______________________________________________ busybox mailing list [email protected] http://lists.busybox.net/mailman/listinfo/busybox
