cherry-pick(#39036): fix(msedge): fix local network permissions (#39053)

dgozman · pavelfeldman · web-flow · commit f07234d2a0a5 · 2026-01-30T13:36:24.000Z
Co-authored-by: Pavel Feldman &lt;pavel.feldman@gmail.com&gt;
diff --git a/packages/playwright-core/src/server/chromium/crBrowser.ts b/packages/playwright-core/src/server/chromium/crBrowser.ts
@@ -452,13 +452,25 @@ export class CRBrowserContext extends BrowserContext<CREventsMap> {
       ['local-fonts', 'localFonts'],
       ['local-network-access', ['localNetworkAccess', 'localNetwork', 'loopbackNetwork']],
     ]);
-    const filtered = permissions.flatMap(permission => {
-      const protocolPermission = webPermissionToProtocol.get(permission);
-      if (!protocolPermission)
-        throw new Error('Unknown permission: ' + permission);
-      return typeof protocolPermission === 'string' ? [protocolPermission] : protocolPermission;
-    });
-    await this._browser._session.send('Browser.grantPermissions', { origin: origin === '*' ? undefined : origin, browserContextId: this._browserContextId, permissions: filtered });
+
+    const grantPermissions = async (mapping: Map<string, Protocol.Browser.PermissionType | Protocol.Browser.PermissionType[]>) => {
+      const filtered = permissions.flatMap(permission => {
+        const protocolPermission = mapping.get(permission);
+        if (!protocolPermission)
+          throw new Error('Unknown permission: ' + permission);
+        return typeof protocolPermission === 'string' ? [protocolPermission] : protocolPermission;
+      });
+      await this._browser._session.send('Browser.grantPermissions', { origin: origin === '*' ? undefined : origin, browserContextId: this._browserContextId, permissions: filtered });
+    };
+
+    try {
+      await grantPermissions(webPermissionToProtocol);
+    } catch (e) {
+      // Old stable browsers dislike the new permission name, so we use the fallback mapping.
+      const fallbackMapping = new Map(webPermissionToProtocol);
+      fallbackMapping.set('local-network-access', ['localNetworkAccess']);
+      await grantPermissions(fallbackMapping);
+    }
   }
 
   async doClearPermissions() {
diff --git a/tests/library/permissions.spec.ts b/tests/library/permissions.spec.ts
@@ -258,7 +258,6 @@ it('local network request is allowed from public origin', {
   annotation: { type: 'issue', description: 'https://github.com/microsoft/playwright/issues/37861' }
 }, async ({ page, context, server, browserName, channel, browserMajorVersion }) => {
   it.skip(browserName === 'webkit');
-  it.skip(channel?.startsWith('msedge'));
   it.skip(browserName === 'chromium' && browserMajorVersion < 145, 'local-network-access permission support has changed between versions');
 
   if (browserName === 'chromium')
