[FIX] web: http_service: 502 errors should be handled as connection lost

Run Odoo behind nginx, load odoo, kill the server, and trigger the http service to make a request

Before this commit it, the error code 502 was not handled

After this commit, it is handled as if the server was unreachable altogether

addons/web/static/src/core/network/http_service.js

@@ -2,11 +2,18 @@
 
 import { registry } from "../registry";
 
+function checkResponseStatus(response) {
+    if (response.status === 502) {
+        throw new Error("Failed to fetch");
+    }
+}
+
 export const httpService = {
     start() {
         return {
             async get(route, readMethod = "json") {
                 const response = await fetch(route, { method: "GET" });
+                checkResponseStatus(response);
                 return response[readMethod]();
             },
             async post(route, params = {}, readMethod = "json") {
@@ -26,6 +33,7 @@ export const httpService = {
                     method: "POST",
                 };
                 const response = await fetch(route, info);
+                checkResponseStatus(response);
                 return response[readMethod]();
             },
         };