Routing groups in Go 1.22

[Mike-at-EQT]

Could you help me understand why the following code is not routed properly to Huma?

Basically, the "/api/" gets stripped and then I end up with just "/" everywhere. I can't call the healthcheck or the OpenAPI docs.

func NewRouter() http.Handler {
	mux := http.NewServeMux()

	mux.Handle("/", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Write([]byte("Welcome to the API 🎉"))
	}))

	mux.Handle("/api/", ApiMux())

	return mux
}

func ApiMux() http.Handler {
	apiMux := http.NewServeMux()

	apiConfig := huma.DefaultConfig("API Service", "1.0.0")
	apiConfig.Servers = []*huma.Server{
		{URL: config.LoadConfig().BaseURL + "/api"},
	}
	api := humago.NewWithPrefix(apiMux, "/api", apiConfig)

	huma.Get(api, "/health", handlers.HandleHealthCheck)

	return apiMux
}

[LeeSaferite]

Your code works fine for me on go 1.22.2 and Huma v2.18.0

package main

import (
	"context"
	"net/http"

	"github.com/danielgtaylor/huma/v2"
	"github.com/danielgtaylor/huma/v2/adapters/humago"
)

func main() {
	server := http.Server{
		Addr:    ":8080",
		Handler: NewRouter(),
	}
	if err := server.ListenAndServe(); err != nil {
		panic(err)
	}
}

func NewRouter() http.Handler {
	mux := http.NewServeMux()

	mux.Handle(
		"/", http.HandlerFunc(
			func(w http.ResponseWriter, r *http.Request) {
				w.Write([]byte("Welcome to the API 🎉"))
			},
		),
	)

	mux.Handle("/api/", ApiMux())

	return mux
}

func ApiMux() http.Handler {
	apiMux := http.NewServeMux()

	apiConfig := huma.DefaultConfig("API Service", "1.0.0")
	apiConfig.Servers = []*huma.Server{
		{URL: "http://localhost:8080/api"},
	}
	api := humago.NewWithPrefix(apiMux, "/api", apiConfig)
	huma.Get(
		api, "/health", func(ctx context.Context, i *Input) (*Output, error) {
			return &Output{Body: "healthy"}, nil
		},
	)

	return apiMux
}

type Input struct {
}

type Output struct {
	Body string `json:"body"`
}

[Mike-at-EQT]

Thank you @LeeSaferite . I copied and ran your code locally (Go 1.22.4, Huma 2.18.0).

In Chrome (usual window):
http://localhost:8080/api/docs becomes http://localhost:8080/docs

In Chrome (private mode):
Works!

In curl:
Works!

So in other words, there is something fishy going on with my browser that causes URL re-writing :(