| // Copyright 2020 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // [START includes] |
| #include <fuchsia/examples/llcpp/fidl.h> |
| #include <lib/fdio/directory.h> |
| #include <lib/zx/channel.h> |
| #include <zircon/status.h> |
| |
| #include <iostream> |
| // [END includes] |
| |
| // [START connect] |
| // Returns a channel connected to the /svc directory. The |
| // remote end of the channel implements the io.Directory protocol and contains |
| // the capabilities provided to this component. |
| zx::channel get_svc_directory() { |
| zx::channel server_end, client_end; |
| ZX_ASSERT(zx::channel::create(0, &client_end, &server_end) == ZX_OK); |
| ZX_ASSERT(fdio_service_connect("/svc/.", server_end.release()) == ZX_OK); |
| return client_end; |
| } |
| // [END connect] |
| |
| // [START main] |
| int main(int argc, const char** argv) { |
| auto svc = get_svc_directory(); |
| zx::channel server_end, client_end; |
| ZX_ASSERT(zx::channel::create(0, &client_end, &server_end) == ZX_OK); |
| // Connect to the fuchsia.examples.Echo protocol. |
| ZX_ASSERT(fdio_service_connect_at(svc.get(), "fuchsia.examples.Echo", server_end.release()) == |
| ZX_OK); |
| // Create a synchronous-only client to the Echo protocol. |
| ::llcpp::fuchsia::examples::Echo::SyncClient client(std::move(client_end)); |
| |
| // Make an EchoString request, then print out the response. |
| { |
| auto result = client.EchoString("hello"); |
| ZX_ASSERT(result.ok()); |
| std::string reply_string(result->response.data(), result->response.size()); |
| std::cout << "Got response: " << reply_string << std::endl; |
| } |
| |
| { |
| // Make a SendString request |
| auto result = client.SendString("hi"); |
| // Check that the request was sent succesfully |
| ZX_ASSERT(result.ok()); |
| |
| class EventHandler : public llcpp::fuchsia::examples::Echo::EventHandler { |
| public: |
| EventHandler() = default; |
| |
| void OnString(llcpp::fuchsia::examples::Echo::OnStringResponse* event) override { |
| std::string reply_string(event->response.data(), event->response.size()); |
| std::cout << "Got event: " << reply_string << std::endl; |
| } |
| |
| zx_status_t Unknown() override { return ZX_ERR_NOT_SUPPORTED; } |
| }; |
| |
| // Block to receive exactly one event from the server, which is handled using |
| // the event handlers defined above. |
| EventHandler event_handler; |
| ZX_ASSERT(client.HandleOneEvent(event_handler).ok()); |
| } |
| |
| return 0; |
| } |
| // [END main] |