Doc updates: server side

Author: tsegismont

README.adoc

@@ -90,6 +90,44 @@ ifndef::env-github[]
 ----
 include::pom.xml[tags="protobuf-maven-plugin",indent=0]
 ----
+
 <1> Properties prefixed `os.detected` are computed with the https://github.com/trustin/os-maven-plugin[os-maven-plugin] extension.
 <2> We choose to use the `CommonJS` modules generation style instead of closures.
 endif::env-github[]
+
+=== The server side
+
+The server side code fits in a single `ServerVerticle` class.
+
+First, the gRPC server stub implementation.
+
+ifdef::env-github[]
+link:src/main/java/io/vertx/howtos/grpcweb/ServerVerticle.java[Verticle file]
+endif::env-github[]
+ifndef::env-github[]
+[source,java]
+.gRPC server stub implementation
+----
+include::src/main/java/io/vertx/howtos/grpcweb/ServerVerticle.java[tags="grpcServer",indent=0]
+----
+endif::env-github[]
+
+There is nothing specific to gRPC Web here.
+
+NOTE: `GrpcIoServer` enables the gRPC Web protocol support by default.
+
+Then we have to configure a Vert.x Web `Router` to accept both gRPC Web and static file requests.
+
+ifdef::env-github[]
+link:src/main/java/io/vertx/howtos/grpcweb/ServerVerticle.java[Verticle file]
+endif::env-github[]
+ifndef::env-github[]
+[source,java]
+.Router and server configuration
+----
+include::src/main/java/io/vertx/howtos/grpcweb/ServerVerticle.java[tags="routerAndServer",indent=0]
+----
+
+<1> All requests with `application/grpc-web-text` content type will be handed over to the `grpcServer`.
+<2> All other `GET` requests will be handled by a Vert.x Web `StaticHandler`.
+endif::env-github[]

src/main/java/io/vertx/howtos/grpcweb/ServerVerticle.java

@@ -6,7 +6,6 @@
 import io.vertx.core.Vertx;
 import io.vertx.ext.web.Router;
 import io.vertx.ext.web.handler.StaticHandler;
-import io.vertx.grpc.server.GrpcServerOptions;
 import io.vertx.grpcio.server.GrpcIoServer;
 import io.vertx.grpcio.server.GrpcIoServiceBridge;
 
@@ -23,19 +22,18 @@ public void sayHello(HelloRequest request, StreamObserver<HelloReply> responseOb
  }
  };
 
- GrpcServerOptions grpcServerOptions = new GrpcServerOptions().setGrpcWebEnabled(true); // <2>
- GrpcIoServer grpcServer = GrpcIoServer.server(vertx, grpcServerOptions);
+ GrpcIoServer grpcServer = GrpcIoServer.server(vertx);
  GrpcIoServiceBridge serverStub = GrpcIoServiceBridge.bridge(service);
  serverStub.bind(grpcServer);
  // end::grpcServer[]
 
  // tag::routerAndServer[]
  Router router = Router.router(vertx);
  router.route()
- .consumes("application/grpc-web-text")
+ .consumes("application/grpc-web-text") // <1>
  .handler(rc -> grpcServer.handle(rc.request()));
 
- router.get().handler(StaticHandler.create());
+ router.get().handler(StaticHandler.create()); // <2>
 
  return vertx.createHttpServer()
  .requestHandler(router)