Method handle

packages/angular/ssr/src/app.ts:179–218

* Handles an incoming HTTP request by serving prerendered content, performing server-side rendering, * or delivering a static file for client-side rendered routes based on the `RenderMode` setting. * * @param request - The HTTP request to handle. * @param requestContext - Optional contex

(request: Request, requestContext?: unknown)

   * corresponding to `https://www.example.com/page`.
   */
  async handle(request: Request, requestContext?: unknown): Promise<Response | null> {
    const url = new URL(request.url);
    if (WELL_KNOWN_NON_ANGULAR_URLS.has(url.pathname)) {
      return null;
    }

    this.router ??= await ServerRouter.from(this.manifest, url);
    const matchedRoute = this.router.match(url);

    if (!matchedRoute) {
      // Not a known Angular route.
      return null;
    }

    const { redirectTo, status, renderMode, headers } = matchedRoute;

    if (redirectTo !== undefined) {
      return createRedirectResponse(
        joinUrlParts(
          request.headers.get('X-Forwarded-Prefix') ?? '',
          buildPathWithParams(redirectTo, url.pathname),
        ),
        status,
        headers,
      );
    }

    if (renderMode === RenderMode.Prerender) {
      const response = await this.handleServe(request, matchedRoute);
      if (response) {
        return response;
      }
    }

    return promiseWithAbort(
      this.handleRendering(request, matchedRoute, requestContext),
      request.signal,
      `Request for: ${request.url}`,
    );
  }

  /**
   * Handles serving a prerendered static asset if available for the matched route.