package compat import ( "fmt" "net/http" "github.com/containers/buildah" "github.com/containers/libpod/pkg/api/handlers" ) // Ping returns headers to client about the service // // This handler must always be the same for the compatibility and libpod URL trees! // Clients will use the Header availability to test which backend engine is in use. func Ping(w http.ResponseWriter, r *http.Request) { w.Header().Set("API-Version", handlers.DefaultApiVersion) w.Header().Set("BuildKit-Version", "") w.Header().Set("Docker-Experimental", "true") w.Header().Set("Cache-Control", "no-cache") w.Header().Set("Pragma", "no-cache") // API-Version and Libpod-API-Version may not always be equal w.Header().Set("Libpod-API-Version", handlers.DefaultApiVersion) w.Header().Set("Libpod-Buildha-Version", buildah.Version) w.WriteHeader(http.StatusOK) if r.Method == http.MethodGet { fmt.Fprint(w, "OK") } fmt.Fprint(w, "\n") }