Client improvements.

GitOrigin-RevId: 85b45a31fbb7b7b84a87d3951086332d750de01c

example/cpp/td_example.cpp

@@ -53,7 +53,7 @@ namespace td_api = td::td_api;
 class TdExample {
  public:
   TdExample() {
-    td::Log::set_verbosity_level(10);
+    td::Log::set_verbosity_level(1);
     client_ = std::make_unique<td::Client>();
   }
 
@@ -87,6 +87,9 @@ class TdExample {
               break;
             }
           }
+        } else if (action == "close") {
+          std::cerr << "Closing..." << std::endl;
+          send_query(td_api::make_object<td_api::close>(), {});
         } else if (action == "l") {
           std::cerr << "Logging out..." << std::endl;
           send_query(td_api::make_object<td_api::logOut>(), {});

td/telegram/Client.cpp

@@ -29,11 +29,6 @@ class Client::Impl final {
   }
 
   void send(Request request) {
-    if (request.id == 0 || request.function == nullptr) {
-      LOG(ERROR) << "Drop wrong request " << request.id;
-      return;
-    }
-
     requests_.push_back(std::move(request));
   }
 
@@ -160,7 +155,7 @@ class Client::Impl final {
     scheduler_->init(3);
     class Callback : public TdCallback {
      public:
-      Callback(std::shared_ptr<OutputQueue> output_queue) : output_queue_(std::move(output_queue)) {
+      explicit Callback(std::shared_ptr<OutputQueue> output_queue) : output_queue_(std::move(output_queue)) {
       }
       void on_result(std::uint64_t id, td_api::object_ptr<td_api::Object> result) override {
         output_queue_->writer_put({id, std::move(result)});

td/telegram/Td.cpp

@@ -3292,12 +3292,12 @@ bool Td::is_preauthentication_request(int32 id) {
 }
 
 void Td::request(uint64 id, tl_object_ptr<td_api::Function> function) {
-  request_set_.insert(id);
-
   if (id == 0) {
-    LOG(ERROR) << "Receive request with id == 0";
-    return send_error_raw(id, 400, "Wrong request id == 0");
+    LOG(ERROR) << "Ignore request with id == 0: " << to_string(function);
+    return;
   }
+
+  request_set_.insert(id);
   if (function == nullptr) {
     LOG(ERROR) << "Receive empty request";
     return send_error_raw(id, 400, "Request is empty");