Fix director default response and add HEAD as allowed verb

director/director.go

@@ -490,7 +490,7 @@ func ShortcutMiddleware(defaultResponse string) gin.HandlerFunc {
 		// If we're configured for cache mode or we haven't set the flag,
 		// we should use cache middleware
 		if defaultResponse == "cache" {
-			if !strings.HasPrefix(c.Request.URL.Path, "/api/v1.0/director/") {
+			if !strings.HasPrefix(c.Request.URL.Path, "/api/v1.0/director/") && (c.Request.Method == "GET" || c.Request.Method == "HEAD") {
 				c.Request.URL.Path = "/api/v1.0/director/object" + c.Request.URL.Path
 				redirectToCache(c)
 				c.Abort()
@@ -500,7 +500,7 @@ func ShortcutMiddleware(defaultResponse string) gin.HandlerFunc {
 			// If the path starts with the correct prefix, continue with the next handler
 			c.Next()
 		} else if defaultResponse == "origin" {
-			if !strings.HasPrefix(c.Request.URL.Path, "/api/v1.0/director/") {
+			if !strings.HasPrefix(c.Request.URL.Path, "/api/v1.0/director/") && (c.Request.Method == "GET" || c.Request.Method == "HEAD") {
 				c.Request.URL.Path = "/api/v1.0/director/origin" + c.Request.URL.Path
 				redirectToOrigin(c)
 				c.Abort()
@@ -828,7 +828,9 @@ func RegisterDirectorAPI(ctx context.Context, router *gin.RouterGroup) {
 	{
 		// Establish the routes used for cache/origin redirection
 		directorAPIV1.GET("/object/*any", redirectToCache)
+		directorAPIV1.HEAD("/object/*any", redirectToCache)
 		directorAPIV1.GET("/origin/*any", redirectToOrigin)
+		directorAPIV1.HEAD("/origin/*any", redirectToOrigin)
 		directorAPIV1.PUT("/origin/*any", redirectToOrigin)
 		directorAPIV1.POST("/registerOrigin", func(gctx *gin.Context) { registerServeAd(ctx, gctx, server_structs.OriginType) })
 		directorAPIV1.POST("/registerCache", func(gctx *gin.Context) { registerServeAd(ctx, gctx, server_structs.CacheType) })

launchers/director_serve.go

@@ -23,12 +23,13 @@ import (
 	"fmt"
 
 	"github.com/gin-gonic/gin"
+	log "github.com/sirupsen/logrus"
+	"golang.org/x/sync/errgroup"
+
 	"github.com/pelicanplatform/pelican/config"
 	"github.com/pelicanplatform/pelican/director"
 	"github.com/pelicanplatform/pelican/metrics"
 	"github.com/pelicanplatform/pelican/param"
-	log "github.com/sirupsen/logrus"
-	"golang.org/x/sync/errgroup"
 )
 
 func DirectorServe(ctx context.Context, engine *gin.Engine, egrp *errgroup.Group) error {

launchers/launcher.go

@@ -110,7 +110,7 @@ func LaunchModules(ctx context.Context, modules config.ServerType) (context.Canc
 
 	if modules.IsEnabled(config.DirectorType) {
 
-		viper.Set("Director.DefaultResponse", "cache")
+		viper.Set("Director.DefaultResponse", param.Director_DefaultResponse.GetString())
 
 		viper.Set("Federation.DirectorURL", param.Server_ExternalWebUrl.GetString())