fix basic-auth-proxy to use cloudflare/fetch

_examples/basic-auth-proxy/go.mod

@@ -2,9 +2,6 @@ module github.com/syumai/workers/_examples/basic-auth-server
 
 go 1.21.3
 
-require (
+require github.com/syumai/workers v0.5.1
-	github.com/syumai/tinyutil v0.3.0
-	github.com/syumai/workers v0.5.1
-)
 
 replace github.com/syumai/workers => ../../

_examples/basic-auth-proxy/go.sum

@@ -1,2 +0,0 @@
-github.com/syumai/tinyutil v0.3.0 h1:sgWeE8oQyequIRLNeHZgR1PddpY4mxcdkfMgx2m53IE=
-github.com/syumai/tinyutil v0.3.0/go.mod h1:/owCyUs1bh6tKxH7K1Ze3M/zZtZ+vGrj3h82fgNHDFI=

_examples/basic-auth-proxy/main.go

@@ -1,12 +1,13 @@
 package main
 
 import (
+	"fmt"
 	"io"
 	"log"
 	"net/http"
 
-	"github.com/syumai/tinyutil/httputil"
 	"github.com/syumai/workers"
+	"github.com/syumai/workers/cloudflare/fetch"
 )
 
 const (
@@ -33,12 +34,20 @@ func handleRequest(w http.ResponseWriter, req *http.Request) {
 	u := *req.URL
 	u.Scheme = "https"
 	u.Host = "syum.ai"
-	resp, err := httputil.Get(u.String())
+	r, err := fetch.NewRequest(req.Context(), req.Method, u.String(), req.Body)
 	if err != nil {
 		handleError(w, http.StatusInternalServerError, "Internal Error")
 		log.Printf("failed to execute proxy request: %v\n", err)
 		return
 	}
+	r.Header = req.Header.Clone()
+	cli := fetch.NewClient()
+	resp, err := cli.Do(r, nil)
+	if err != nil {
+		fmt.Println(err)
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
 	for k, values := range resp.Header {
 		for _, v := range values {
 			w.Header().Add(k, v)