Fix issue and appease linter

src/pages/api/ping.js

@@ -3,7 +3,7 @@ import { performance } from "perf_hooks";
 import { getServiceItem } from "utils/config/service-helpers";
 import createLogger from "utils/logger";
 import { httpProxy } from "utils/proxy/http";
-import {importCookieHeader} from "../../utils/proxy/cookie-jar";
+import {importCookieHeader} from "utils/proxy/cookie-jar";
 
 const logger = createLogger("ping");
 

src/utils/proxy/cookie-jar.js

@@ -39,10 +39,20 @@ export function addCookieToJar(url, headers) {
 }
 
 export function importCookieHeader(url, cookieHeader) {
-    for (const cookiePair of cookieHeader.split(';')) {
+    const cookies = cookieHeader.split(';')
-        const [key, value] = cookiePair.trim().split('=')
+    for (let i = 0; i < cookies.length; i += 1) {
+        const [key, value] = cookies[i].trim().split('=')
+
+        // If there's an existing cookie with a matching key for this url,
+        // we want to update it
+        const existingCookie = cookieJar.getCookiesSync(url).find(existing => existing.key === key)
+        if (existingCookie) {
+            existingCookie.value = value;
+        } else {
+            // Otherwise we add a new cookie
             cookieJar.setCookieSync(new Cookie({
                 key, value
-        }), url.toString(), { ignoreError: true });
+            }), url.toString(), { ignoreError: false });
+        }
     }
 }

src/utils/proxy/handlers/generic.js

@@ -4,7 +4,7 @@ import validateWidgetData from "utils/proxy/validate-widget-data";
 import { httpProxy } from "utils/proxy/http";
 import createLogger from "utils/logger";
 import widgets from "widgets/widgets";
-import {importCookieHeader} from "../cookie-jar";
+import {importCookieHeader} from "utils/proxy/cookie-jar";
 
 const logger = createLogger("genericProxyHandler");