Minor improvements.

telegram-bot-api/Client.h

@@ -11,6 +11,7 @@
 #include "telegram-bot-api/WebhookActor.h"
 
 #include "td/telegram/ClientActor.h"
+#include "td/telegram/td_api.h"
 
 #include "td/actor/actor.h"
 #include "td/actor/PromiseFuture.h"
@@ -35,12 +36,12 @@ struct ClientParameters;
 
 namespace td_api = td::td_api;
 
-class Client : public WebhookActor::Callback {
+class Client final : public WebhookActor::Callback {
  public:
   Client(td::ActorShared<> parent, const td::string &bot_token, bool is_test_dc, td::int64 tqueue_id,
          std::shared_ptr<const ClientParameters> parameters, td::ActorId<BotStatActor> stat_actor);
 
-  void send(PromisedQueryPtr query) override;
+  void send(PromisedQueryPtr query) final;
 
   void close();
 
@@ -519,11 +520,11 @@ class Client : public WebhookActor::Callback {
   Status process_get_webhook_info_query(PromisedQueryPtr &query);
   Status process_get_file_query(PromisedQueryPtr &query);
 
-  void webhook_verified(td::string cached_ip_address) override;
+  void webhook_verified(td::string cached_ip_address) final;
-  void webhook_success() override;
+  void webhook_success() final;
-  void webhook_error(Status status) override;
+  void webhook_error(Status status) final;
-  void webhook_closed(Status status) override;
+  void webhook_closed(Status status) final;
-  void hangup_shared() override;
+  void hangup_shared() final;
   int32 get_webhook_max_connections(const Query *query) const;
   static bool get_webhook_fix_ip_address(const Query *query);
   void do_set_webhook(PromisedQueryPtr query, bool was_deleted);
@@ -562,13 +563,13 @@ class Client : public WebhookActor::Callback {
 
   void long_poll_wakeup(bool force_flag);
 
-  void start_up() override;
+  void start_up() final;
 
-  void raw_event(const td::Event::Raw &event) override;
+  void raw_event(const td::Event::Raw &event) final;
 
-  void loop() override;
+  void loop() final;
 
-  void timeout_expired() override;
+  void timeout_expired() final;
 
   struct UserInfo {
     enum class Type { Regular, Deleted, Bot, Unknown };

telegram-bot-api/ClientManager.cpp

@@ -11,6 +11,7 @@
 #include "telegram-bot-api/WebhookActor.h"
 
 #include "td/telegram/ClientActor.h"
+#include "td/telegram/td_api.h"
 
 #include "td/db/binlog/Binlog.h"
 #include "td/db/binlog/ConcurrentBinlog.h"
@@ -104,7 +105,7 @@ void ClientManager::send(PromisedQueryPtr query) {
         flood_control.add_limit(60, 20);        // 20 in a minute
         flood_control.add_limit(60 * 60, 600);  // 600 in an hour
       }
-      td::uint32 now = static_cast<td::uint32>(td::Time::now());
+      auto now = static_cast<td::uint32>(td::Time::now());
       td::uint32 wakeup_at = flood_control.get_wakeup_at();
       if (wakeup_at > now) {
         LOG(INFO) << "Failed to create Client from IP address " << ip_address;

telegram-bot-api/ClientManager.h

@@ -73,9 +73,9 @@ class ClientManager final : public td::Actor {
   static PromisedQueryPtr get_webhook_restore_query(td::Slice token, td::Slice webhook_info,
                                                     std::shared_ptr<SharedData> shared_data);
 
-  void start_up() override;
+  void start_up() final;
-  void raw_event(const td::Event::Raw &event) override;
+  void raw_event(const td::Event::Raw &event) final;
-  void hangup_shared() override;
+  void hangup_shared() final;
   void close_db();
   void finish_close();
 };

telegram-bot-api/ClientParameters.h

@@ -6,13 +6,13 @@
 //
 #pragma once
 
-#include "td/actor/actor.h"
-
 #include "td/db/KeyValueSyncInterface.h"
 #include "td/db/TQueue.h"
 
 #include "td/net/GetHostByNameActor.h"
 
+#include "td/actor/actor.h"
+
 #include "td/utils/common.h"
 #include "td/utils/List.h"
 #include "td/utils/port/IPAddress.h"

telegram-bot-api/HttpConnection.h

@@ -9,12 +9,12 @@
 #include "telegram-bot-api/ClientManager.h"
 #include "telegram-bot-api/Query.h"
 
-#include "td/actor/actor.h"
-#include "td/actor/PromiseFuture.h"
-
 #include "td/net/HttpInboundConnection.h"
 #include "td/net/HttpQuery.h"
 
+#include "td/actor/actor.h"
+#include "td/actor/PromiseFuture.h"
+
 #include "td/utils/buffer.h"
 #include "td/utils/Slice.h"
 
@@ -24,15 +24,15 @@ namespace telegram_bot_api {
 
 struct SharedData;
 
-class HttpConnection : public td::HttpInboundConnection::Callback {
+class HttpConnection final : public td::HttpInboundConnection::Callback {
  public:
   explicit HttpConnection(td::ActorId<ClientManager> client_manager, std::shared_ptr<SharedData> shared_data)
       : client_manager_(client_manager), shared_data_(std::move(shared_data)) {
   }
 
-  void handle(td::unique_ptr<td::HttpQuery> http_query, td::ActorOwn<td::HttpInboundConnection> connection) override;
+  void handle(td::unique_ptr<td::HttpQuery> http_query, td::ActorOwn<td::HttpInboundConnection> connection) final;
 
-  void wakeup() override;
+  void wakeup() final;
 
  private:
   td::FutureActor<td::unique_ptr<Query>> result_;
@@ -40,7 +40,7 @@ class HttpConnection : public td::HttpInboundConnection::Callback {
   td::ActorOwn<td::HttpInboundConnection> connection_;
   std::shared_ptr<SharedData> shared_data_;
 
-  void hangup() override {
+  void hangup() final {
     connection_.release();
     stop();
   }

telegram-bot-api/HttpServer.h

@@ -6,11 +6,11 @@
 //
 #pragma once
 
-#include "td/actor/actor.h"
-
 #include "td/net/HttpInboundConnection.h"
 #include "td/net/TcpListener.h"
 
+#include "td/actor/actor.h"
+
 #include "td/utils/BufferedFd.h"
 #include "td/utils/FloodControlFast.h"
 #include "td/utils/format.h"
@@ -23,7 +23,7 @@
 
 namespace telegram_bot_api {
 
-class HttpServer : public td::TcpListener::Callback {
+class HttpServer final : public td::TcpListener::Callback {
  public:
   HttpServer(td::string ip_address, int port,
              std::function<td::ActorOwn<td::HttpInboundConnection::Callback>()> creator)
@@ -39,7 +39,7 @@ class HttpServer : public td::TcpListener::Callback {
   td::ActorOwn<td::TcpListener> listener_;
   td::FloodControlFast flood_control_;
 
-  void start_up() override {
+  void start_up() final {
     auto now = td::Time::now();
     auto wakeup_at = flood_control_.get_wakeup_at();
     if (wakeup_at > now) {
@@ -53,13 +53,13 @@ class HttpServer : public td::TcpListener::Callback {
         actor_shared(this, 1), ip_address_);
   }
 
-  void hangup_shared() override {
+  void hangup_shared() final {
     LOG(ERROR) << "TCP listener was closed";
     listener_.release();
     yield();
   }
 
-  void accept(td::SocketFd fd) override {
+  void accept(td::SocketFd fd) final {
     auto scheduler_count = td::Scheduler::instance()->sched_count();
     auto scheduler_id = scheduler_count - 1;
     if (scheduler_id > 0) {
@@ -70,7 +70,7 @@ class HttpServer : public td::TcpListener::Callback {
         .release();
   }
 
-  void loop() override {
+  void loop() final {
     if (listener_.empty()) {
       start_up();
     }

telegram-bot-api/HttpStatConnection.h

@@ -8,30 +8,30 @@
 
 #include "telegram-bot-api/ClientManager.h"
 
-#include "td/actor/actor.h"
-#include "td/actor/PromiseFuture.h"
-
 #include "td/net/HttpInboundConnection.h"
 #include "td/net/HttpQuery.h"
 
+#include "td/actor/actor.h"
+#include "td/actor/PromiseFuture.h"
+
 #include "td/utils/buffer.h"
 
 namespace telegram_bot_api {
 
-class HttpStatConnection : public td::HttpInboundConnection::Callback {
+class HttpStatConnection final : public td::HttpInboundConnection::Callback {
  public:
   explicit HttpStatConnection(td::ActorId<ClientManager> client_manager) : client_manager_(client_manager) {
   }
-  void handle(td::unique_ptr<td::HttpQuery> http_query, td::ActorOwn<td::HttpInboundConnection> connection) override;
+  void handle(td::unique_ptr<td::HttpQuery> http_query, td::ActorOwn<td::HttpInboundConnection> connection) final;
 
-  void wakeup() override;
+  void wakeup() final;
 
  private:
   td::FutureActor<td::BufferSlice> result_;
   td::ActorId<ClientManager> client_manager_;
   td::ActorOwn<td::HttpInboundConnection> connection_;
 
-  void hangup() override {
+  void hangup() final {
     connection_.release();
     stop();
   }

telegram-bot-api/Query.h

@@ -8,11 +8,11 @@
 
 #include "telegram-bot-api/ClientParameters.h"
 
+#include "td/net/HttpFile.h"
+
 #include "td/actor/actor.h"
 #include "td/actor/PromiseFuture.h"
 
-#include "td/net/HttpFile.h"
-
 #include "td/utils/buffer.h"
 #include "td/utils/common.h"
 #include "td/utils/JsonBuilder.h"
@@ -30,7 +30,7 @@ namespace telegram_bot_api {
 
 class BotStatActor;
 
-class Query : public td::ListNode {
+class Query final : public td::ListNode {
  public:
   enum class State : td::int8 { Query, OK, Error };
 
@@ -166,7 +166,7 @@ td::StringBuilder &operator<<(td::StringBuilder &sb, const Query &query);
 // https://stackoverflow.com/questions/26947704/implicit-conversion-failure-from-initializer-list
 extern std::unordered_map<td::string, std::unique_ptr<td::VirtuallyJsonable>> empty_parameters;
 
-class JsonParameters : public td::Jsonable {
+class JsonParameters final : public td::Jsonable {
  public:
   explicit JsonParameters(const std::unordered_map<td::string, std::unique_ptr<td::VirtuallyJsonable>> &parameters)
       : parameters_(parameters) {
@@ -184,7 +184,7 @@ class JsonParameters : public td::Jsonable {
 };
 
 template <class T>
-class JsonQueryOk : public td::Jsonable {
+class JsonQueryOk final : public td::Jsonable {
  public:
   JsonQueryOk(const T &result, td::Slice description) : result_(result), description_(description) {
   }
@@ -202,7 +202,7 @@ class JsonQueryOk : public td::Jsonable {
   td::Slice description_;
 };
 
-class JsonQueryError : public td::Jsonable {
+class JsonQueryError final : public td::Jsonable {
  public:
   JsonQueryError(
       int error_code, td::Slice description,

telegram-bot-api/Stats.h

@@ -156,7 +156,7 @@ class BotStatActor final : public td::Actor {
   BotStatActor(const BotStatActor &) = delete;
   BotStatActor &operator=(const BotStatActor &other) = delete;
   BotStatActor(BotStatActor &&) = default;
-  BotStatActor &operator=(BotStatActor &&other) {
+  BotStatActor &operator=(BotStatActor &&other) noexcept {
     if (!empty()) {
       do_stop();
     }
@@ -165,7 +165,7 @@ class BotStatActor final : public td::Actor {
     parent_ = other.parent_;
     return *this;
   }
-  ~BotStatActor() override = default;
+  ~BotStatActor() final = default;
 
   template <class EventT>
   void add_event(const EventT &event, double now) {

telegram-bot-api/WebhookActor.cpp

@@ -152,11 +152,11 @@ td::Status WebhookActor::create_connection() {
     }
 
     VLOG(webhook) << "Create connection through proxy " << parameters_->webhook_proxy_ip_address_;
-    class Callback : public td::TransparentProxy::Callback {
+    class Callback final : public td::TransparentProxy::Callback {
      public:
       Callback(td::ActorId<WebhookActor> actor, td::int64 id) : actor_(actor), id_(id) {
       }
-      void set_result(td::Result<td::BufferedFd<td::SocketFd>> result) override {
+      void set_result(td::Result<td::BufferedFd<td::SocketFd>> result) final {
         send_closure(std::move(actor_), &WebhookActor::on_socket_ready_async, std::move(result), id_);
         CHECK(actor_.empty());
       }
@@ -169,7 +169,7 @@ td::Status WebhookActor::create_connection() {
           send_closure(std::move(actor_), &WebhookActor::on_socket_ready_async, td::Status::Error("Canceled"), id_);
         }
       }
-      void on_connected() override {
+      void on_connected() final {
         // nothing to do
       }
 

telegram-bot-api/WebhookActor.h

@@ -41,7 +41,7 @@ namespace telegram_bot_api {
 
 struct ClientParameters;
 
-class WebhookActor : public td::HttpOutboundConnection::Callback {
+class WebhookActor final : public td::HttpOutboundConnection::Callback {
  public:
   class Callback : public td::Actor {
    public:
@@ -139,7 +139,7 @@ class WebhookActor : public td::HttpOutboundConnection::Callback {
   double next_ip_address_resolve_time_ = 0;
   td::FutureActor<td::IPAddress> future_ip_address_;
 
-  class Connection : public td::ListNode {
+  class Connection final : public td::ListNode {
    public:
     Connection() = default;
     Connection(const Connection &) = delete;
@@ -190,26 +190,26 @@ class WebhookActor : public td::HttpOutboundConnection::Callback {
   td::Status send_update() TD_WARN_UNUSED_RESULT;
   void send_updates();
 
-  void loop() override;
+  void loop() final;
-  void handle(td::unique_ptr<td::HttpQuery> response) override;
+  void handle(td::unique_ptr<td::HttpQuery> response) final;
 
-  void hangup_shared() override;
+  void hangup_shared() final;
 
-  void hangup() override;
+  void hangup() final;
 
-  void tear_down() override;
+  void tear_down() final;
 
-  void start_up() override;
+  void start_up() final;
 
   bool check_ip_address(const td::IPAddress &addr) const;
 
   void on_error(td::Status status);
-  void on_connection_error(td::Status error) override;
+  void on_connection_error(td::Status error) final;
   void on_webhook_error(td::Slice error);
   void on_webhook_verified();
 };
 
-class JsonUpdate : public td::Jsonable {
+class JsonUpdate final : public td::Jsonable {
  public:
   JsonUpdate(td::int32 id, td::Slice update) : id_(id), update_(update) {
   }

telegram-bot-api/telegram-bot-api.cpp

@@ -310,8 +310,8 @@ int main(int argc, char *argv[]) {
   options.add_checked_option('c', "max-connections", "maximum number of open file descriptors",
                              td::OptionParser::parse_integer(max_connections));
 
-  options.add_checked_option(
+  options.add_checked_option('\0', "proxy",
-      '\0', "proxy", PSLICE() << "HTTP proxy server for outgoing webhook requests in the format http://host:port",
+                             "HTTP proxy server for outgoing webhook requests in the format http://host:port",
                              [&](td::Slice address) {
                                if (td::begins_with(address, "http://")) {
                                  address.remove_prefix(7);