code update recorded at: 28/03/25 09:17:19

handler.go

@@ -0,0 +1,34 @@
+// package main provides a set of HTTP Cloud Functions samples.
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+)
+
+// handler is an example of setting CORS headers.
+// For more information about CORS and CORS preflight requests, see
+// https://developer.mozilla.org/en-US/docs/Glossary/Preflight_request.
+func handler(w http.ResponseWriter, r *http.Request) {
+	// Set CORS headers for the preflight request
+	if r.Method == http.MethodOptions {
+		w.Header().Set("Access-Control-Allow-Origin", "*")
+		w.Header().Set("Access-Control-Allow-Methods", "POST")
+		w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
+		w.Header().Set("Access-Control-Max-Age", "3600")
+		w.WriteHeader(http.StatusNoContent)
+		return
+	}
+	// Set CORS headers for the main request.
+	w.Header().Set("Access-Control-Allow-Origin", "*")
+	// Initialize a map to hold the response body
+	response := map[string]string{
+		"message": "Hello, World!", // Set the message to "Hello, World!"
+	}
+
+	// Set the Content-Type header to application/json
+	w.Header().Set("Content-Type", "application/json")
+
+	// Encode the response map into JSON and write it to the response
+	json.NewEncoder(w).Encode(response)
+}