Thanks!


On Wed, Sep 4, 2013 at 4:38 PM, Yichun Zhang (agentzh) <agentzh@gmail.com>wrote:

> Hello!
>
> On Fri, Aug 16, 2013 at 10:28 PM, Aaron Bedra wrote:
> > I'm looking for a way to make sure a handler only fires once.
>
> If your handler is possible to run multiple times for the same request
> (like the post_subrequest handlers) and you want to avoid that, you
> can just use a module ctx field to serve as a flag for that. For
> example,
>
> ctx = ngx_http_get_module_ctx(r, ngx_http_foo_module);
> if (ctx == NULL) {
> /* create ctx here and ctx->already_run should be initialized to 0
> */
> }
>
> if (ctx->already_run) {
> return NGX_DONE;
> }
> /* first time */
> ctx->already_run = 1;
>
> /* process normally */
>
> Regards,
> -agentzh
>
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>
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