39 lines
977 B
Go
39 lines
977 B
Go
package middleware
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import (
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"net/http"
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"github.com/go-chi/chi/v5"
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)
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// GetHead automatically route undefined HEAD requests to GET handlers.
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func GetHead(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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if r.Method == "HEAD" {
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rctx := chi.RouteContext(r.Context())
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routePath := rctx.RoutePath
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if routePath == "" {
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if r.URL.RawPath != "" {
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routePath = r.URL.RawPath
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} else {
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routePath = r.URL.Path
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}
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}
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// Temporary routing context to look-ahead before routing the request
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tctx := chi.NewRouteContext()
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// Attempt to find a HEAD handler for the routing path, if not found, traverse
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// the router as through its a GET route, but proceed with the request
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// with the HEAD method.
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if !rctx.Routes.Match(tctx, "HEAD", routePath) {
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rctx.RouteMethod = "GET"
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rctx.RoutePath = routePath
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next.ServeHTTP(w, r)
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return
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}
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}
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next.ServeHTTP(w, r)
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})
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}
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