Unary interceptor is not invoked after upgrading grpc-web from 1.5.0 to 2.0.2

[evgenii-petukhov]

I recently upgraded grpc-web in my Angular project from 1.5.0 to 2.0.2. After the upgrade, I had to re-generate the client stubs from my .proto files using the following command:

protoc -I=. file_upload.proto \
  --js_out=import_style=commonjs,binary:. \
  --grpc-web_out=import_style=commonjs+dts,mode=grpcweb:.

After this change, my unary interceptor is no longer invoked. The interceptor itself compiles correctly, but its intercept method is never called.

Interceptor implementation (full code)

@Injectable()
export class GrpcLogInterceptor {
    async intercept<
        T extends { ... },
        R extends { ... }
    >(request: T, invoker: (arg0: T) => Promise<R>): Promise<R> {
        const response = await invoker(request);
        ...
        return response;
    }
}

Registration in AppModule

providers: [
    { provide: GRPC_INTERCEPTORS, useClass: GrpcLogInterceptor, multi: true },
],

Injection and client setup (full code)

export class FileStorageService {
    private fileUploadService: FileUploadGrpcEndpointClient;

    constructor(
        @Inject(GRPC_INTERCEPTORS) interceptors: any[],
    ) {
        this.fileUploadService = new FileUploadGrpcEndpointClient(
            environment.services.fileStorage.url,
            {},
            { unaryInterceptors: interceptors },
        );
    }
}

This setup worked as expected with grpc-web 1.5.0, but after upgrading to 2.0.2, the interceptor is never executed.

Is there a breaking change in how unary interceptors are wired or invoked in newer versions of grpc-web, or is additional configuration required?

Any guidance would be appreciated.

[Vuhag123]

Hi , did you try to check with other version rather than 2.0.2 if yes let us know , we will soon look into this