tdlight/td/mtproto/HandshakeActor.cpp

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//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2023
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#include "td/mtproto/HandshakeActor.h"
#include "td/mtproto/HandshakeConnection.h"
#include "td/utils/common.h"
#include "td/utils/SliceBuilder.h"
#include "td/utils/Status.h"
namespace td {
namespace mtproto {
HandshakeActor::HandshakeActor(unique_ptr<AuthKeyHandshake> handshake, unique_ptr<RawConnection> raw_connection,
unique_ptr<AuthKeyHandshakeContext> context, double timeout,
Promise<unique_ptr<RawConnection>> raw_connection_promise,
Promise<unique_ptr<AuthKeyHandshake>> handshake_promise)
: handshake_(std::move(handshake))
, connection_(make_unique<HandshakeConnection>(std::move(raw_connection), handshake_.get(), std::move(context)))
, timeout_(timeout)
, raw_connection_promise_(std::move(raw_connection_promise))
, handshake_promise_(std::move(handshake_promise)) {
}
void HandshakeActor::close() {
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finish(Status::Error("Canceled"));
stop();
}
void HandshakeActor::start_up() {
Scheduler::subscribe(connection_->get_poll_info().extract_pollable_fd(this));
set_timeout_in(timeout_);
handshake_->set_timeout_in(timeout_);
yield();
}
void HandshakeActor::loop() {
auto status = connection_->flush();
if (status.is_error()) {
finish(std::move(status));
return stop();
}
if (handshake_->is_ready_for_finish()) {
finish(Status::OK());
return stop();
}
}
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void HandshakeActor::hangup() {
finish(Status::Error(1, "Canceled"));
stop();
}
void HandshakeActor::timeout_expired() {
finish(Status::Error("Timeout expired"));
stop();
}
void HandshakeActor::tear_down() {
finish(Status::OK());
}
void HandshakeActor::finish(Status status) {
// NB: order may be important for parent
return_connection(std::move(status));
return_handshake();
}
void HandshakeActor::return_connection(Status status) {
auto raw_connection = connection_->move_as_raw_connection();
if (!raw_connection) {
CHECK(!raw_connection_promise_);
return;
}
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if (status.is_error() && !raw_connection->extra().debug_str.empty()) {
status = status.move_as_error_suffix(PSLICE() << " : " << raw_connection->extra().debug_str);
}
Scheduler::unsubscribe(raw_connection->get_poll_info().get_pollable_fd_ref());
if (raw_connection_promise_) {
if (status.is_error()) {
if (raw_connection->stats_callback()) {
raw_connection->stats_callback()->on_error();
}
raw_connection->close();
raw_connection_promise_.set_error(std::move(status));
} else {
if (raw_connection->stats_callback()) {
raw_connection->stats_callback()->on_pong();
}
raw_connection_promise_.set_value(std::move(raw_connection));
}
} else {
if (raw_connection->stats_callback()) {
raw_connection->stats_callback()->on_error();
}
raw_connection->close();
}
}
void HandshakeActor::return_handshake() {
if (!handshake_promise_) {
CHECK(!handshake_);
return;
}
handshake_promise_.set_value(std::move(handshake_));
}
} // namespace mtproto
} // namespace td