func globalFilter(req zerver.Request, resp zerver.Response, chain zerver.FilterChain) {
resp.SetContentType("text/plain", nil)
if resp.Status() == http.StatusNotFound {
resp.SetHeader("Location", path+"/options?from="+url.QueryEscape(req.URL().Path))
resp.ReportMovedPermanently()
} else if resp.Status() == http.StatusMethodNotAllowed {
resp.WriteString("The pprof interface only support GET request\n")
} else {
chain(req, resp)
}
}
