call it correlation

packages/playwright-core/src/client/mockingProxy.ts

@@ -30,9 +30,9 @@ export class MockingProxy extends ChannelOwner<channels.MockingProxyChannel> {
     const requestContext = APIRequestContext.from(initializer.requestContext);
 
     this._channel.on('route', async (params: channels.MockingProxyRouteEvent) => {
-      const browserRequest = params.browserRequest ? this._browserRequests.get(params.browserRequest) : undefined;
-      if (params.browserRequest)
-        this._browserRequests.delete(params.browserRequest);
+      const browserRequest = params.correlation ? this._browserRequests.get(params.correlation) : undefined;
+      if (params.correlation)
+        this._browserRequests.delete(params.correlation);
       const route = network.Route.from(params.route);
       route._context = requestContext;
       this.emit(Events.MockingProxy.Route, { route, browserRequest });
@@ -49,8 +49,9 @@ export class MockingProxy extends ChannelOwner<channels.MockingProxyChannel> {
       return await route.continue();
 
     const request = route.request();
-    this._browserRequests.set(request._guid, request);
-    const proxyUrl = `http://localhost:${this.port()}/pw_meta:${request._guid}/`;
+    const correlation = request._guid.split('@')[1];
+    this._browserRequests.set(correlation, request);
+    const proxyUrl = `http://localhost:${this.port()}/pw_meta:${correlation}/`;
 
     await route.continue({ headers: { 'x-playwright-proxy': encodeURIComponent(proxyUrl) } });
   }

packages/playwright-core/src/protocol/validator.ts

@@ -348,7 +348,7 @@ scheme.MockingProxyInitializer = tObject({
 });
 scheme.MockingProxyRouteEvent = tObject({
   route: tChannel(['Route']),
-  browserRequest: tOptional(tString),
+  correlation: tOptional(tString),
 });
 scheme.MockingProxySetInterceptionPatternsParams = tObject({
   patterns: tArray(tObject({

packages/playwright-core/src/server/dispatchers/mockingProxyDispatcher.ts

@@ -36,9 +36,9 @@ export class MockingProxyDispatcher extends Dispatcher<MockingProxy, channels.Mo
       requestContext: APIRequestContextDispatcher.from(scope, mockingProxy.fetchRequest),
     });
 
-    this.addObjectListener(MockingProxy.Events.Route, ({ route, browserRequest }: {route: Route, browserRequest?: string }) => {
+    this.addObjectListener(MockingProxy.Events.Route, ({ route, correlation }: {route: Route, correlation?: string }) => {
       const requestDispatcher = RequestDispatcher.from(this as any, route.request());
-      this._dispatchEvent('route', { route: RouteDispatcher.from(requestDispatcher, route), browserRequest });
+      this._dispatchEvent('route', { route: RouteDispatcher.from(requestDispatcher, route), correlation });
     });
   }
 

packages/playwright-core/src/server/mockingProxy.ts

@@ -70,9 +70,9 @@ export class MockingProxy extends SdkObject implements RequestContext {
     if (req.url?.startsWith('/'))
       req.url = req.url.substring(1);
 
-    let browserRequest: string | undefined;
+    let correlation: string | undefined;
     if (req.url?.startsWith('pw_meta:')) {
-      browserRequest = req.url.substring('pw_meta:'.length, req.url.indexOf('/'));
+      correlation = req.url.substring('pw_meta:'.length, req.url.indexOf('/'));
       req.url = req.url.substring(req.url.indexOf('/') + 1);
     }
 
@@ -209,7 +209,7 @@ export class MockingProxy extends SdkObject implements RequestContext {
     });
 
     if (this._matches?.(req.url!))
-      this.emit(MockingProxy.Events.Route, { route, browserRequest });
+      this.emit(MockingProxy.Events.Route, { route, correlation });
     else
       await route.continue({ isFallback: false });
   }

packages/protocol/src/channels.d.ts

@@ -593,7 +593,7 @@ export interface MockingProxyChannel extends MockingProxyEventTarget, EventTarge
 }
 export type MockingProxyRouteEvent = {
   route: RouteChannel,
-  browserRequest?: string,
+  correlation?: string,
 };
 export type MockingProxySetInterceptionPatternsParams = {
   patterns: {

packages/protocol/src/protocol.yml

@@ -700,7 +700,7 @@ MockingProxy:
     route:
       parameters:
         route: Route
-        browserRequest: string?
+        correlation: string?
 
 Root:
   type: interface