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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "osp/impl/quic/quic_service_common.h"
#include <memory>
#include <utility>
#include "util/osp_logging.h"
namespace openscreen {
namespace osp {
// static
std::unique_ptr<QuicProtocolConnection> QuicProtocolConnection::FromExisting(
Owner* owner,
QuicConnection* connection,
ServiceConnectionDelegate* delegate,
uint64_t endpoint_id) {
OSP_VLOG << "QUIC stream created for endpoint " << endpoint_id;
std::unique_ptr<QuicStream> stream = connection->MakeOutgoingStream(delegate);
auto pc = std::make_unique<QuicProtocolConnection>(owner, endpoint_id,
stream->id());
pc->set_stream(stream.get());
delegate->AddStreamPair(ServiceStreamPair(std::move(stream), pc.get()));
return pc;
}
QuicProtocolConnection::QuicProtocolConnection(Owner* owner,
uint64_t endpoint_id,
uint64_t connection_id)
: ProtocolConnection(endpoint_id, connection_id), owner_(owner) {}
QuicProtocolConnection::~QuicProtocolConnection() {
if (stream_) {
stream_->CloseWriteEnd();
owner_->OnConnectionDestroyed(this);
stream_ = nullptr;
}
}
void QuicProtocolConnection::Write(const uint8_t* data, size_t data_size) {
if (stream_)
stream_->Write(data, data_size);
}
void QuicProtocolConnection::CloseWriteEnd() {
if (stream_)
stream_->CloseWriteEnd();
}
void QuicProtocolConnection::OnClose() {
if (observer_)
observer_->OnConnectionClosed(*this);
}
ServiceStreamPair::ServiceStreamPair(
std::unique_ptr<QuicStream> stream,
QuicProtocolConnection* protocol_connection)
: stream(std::move(stream)),
connection_id(protocol_connection->id()),
protocol_connection(std::move(protocol_connection)) {}
ServiceStreamPair::~ServiceStreamPair() = default;
ServiceStreamPair::ServiceStreamPair(ServiceStreamPair&& other) noexcept =
default;
ServiceStreamPair& ServiceStreamPair::operator=(
ServiceStreamPair&& other) noexcept = default;
ServiceConnectionDelegate::ServiceConnectionDelegate(ServiceDelegate* parent,
const IPEndpoint& endpoint)
: parent_(parent), endpoint_(endpoint) {}
ServiceConnectionDelegate::~ServiceConnectionDelegate() {
void DestroyClosedStreams();
OSP_DCHECK(streams_.empty());
}
void ServiceConnectionDelegate::AddStreamPair(ServiceStreamPair&& stream_pair) {
uint64_t stream_id = stream_pair.stream->id();
streams_.emplace(stream_id, std::move(stream_pair));
}
void ServiceConnectionDelegate::DropProtocolConnection(
QuicProtocolConnection* connection) {
auto stream_entry = streams_.find(connection->stream()->id());
if (stream_entry == streams_.end())
return;
stream_entry->second.protocol_connection = nullptr;
}
void ServiceConnectionDelegate::DestroyClosedStreams() {
closed_streams_.clear();
}
void ServiceConnectionDelegate::OnCryptoHandshakeComplete(
uint64_t connection_id) {
endpoint_id_ = parent_->OnCryptoHandshakeComplete(this, connection_id);
OSP_VLOG << "QUIC connection handshake complete for endpoint "
<< endpoint_id_;
}
void ServiceConnectionDelegate::OnIncomingStream(
uint64_t connection_id,
std::unique_ptr<QuicStream> stream) {
OSP_VLOG << "Incoming QUIC stream from endpoint " << endpoint_id_;
pending_connection_->set_stream(stream.get());
AddStreamPair(
ServiceStreamPair(std::move(stream), pending_connection_.get()));
parent_->OnIncomingStream(std::move(pending_connection_));
}
void ServiceConnectionDelegate::OnConnectionClosed(uint64_t connection_id) {
OSP_VLOG << "QUIC connection closed for endpoint " << endpoint_id_;
parent_->OnConnectionClosed(endpoint_id_, connection_id);
}
QuicStream::Delegate* ServiceConnectionDelegate::NextStreamDelegate(
uint64_t connection_id,
uint64_t stream_id) {
OSP_DCHECK(!pending_connection_);
pending_connection_ = std::make_unique<QuicProtocolConnection>(
parent_, endpoint_id_, stream_id);
return this;
}
void ServiceConnectionDelegate::OnReceived(QuicStream* stream,
const char* data,
size_t data_size) {
auto stream_entry = streams_.find(stream->id());
if (stream_entry == streams_.end())
return;
ServiceStreamPair& stream_pair = stream_entry->second;
parent_->OnDataReceived(endpoint_id_, stream_pair.connection_id,
reinterpret_cast<const uint8_t*>(data), data_size);
}
void ServiceConnectionDelegate::OnClose(uint64_t stream_id) {
OSP_VLOG << "QUIC stream closed for endpoint " << endpoint_id_;
auto stream_entry = streams_.find(stream_id);
if (stream_entry == streams_.end())
return;
ServiceStreamPair& stream_pair = stream_entry->second;
parent_->OnDataReceived(endpoint_id_, stream_pair.connection_id, nullptr, 0);
if (stream_pair.protocol_connection) {
stream_pair.protocol_connection->set_stream(nullptr);
stream_pair.protocol_connection->OnClose();
}
// NOTE: If this OnClose is the result of the read end closing when the write
// end was already closed, there will likely still be a call to OnReceived.
// We need to delay actually destroying the stream object until the end of the
// event loop.
closed_streams_.push_back(std::move(stream_entry->second));
streams_.erase(stream_entry);
}
ServiceConnectionData::ServiceConnectionData(
std::unique_ptr<QuicConnection> connection,
std::unique_ptr<ServiceConnectionDelegate> delegate)
: connection(std::move(connection)), delegate(std::move(delegate)) {}
ServiceConnectionData::ServiceConnectionData(ServiceConnectionData&&) noexcept =
default;
ServiceConnectionData::~ServiceConnectionData() = default;
ServiceConnectionData& ServiceConnectionData::operator=(
ServiceConnectionData&&) noexcept = default;
} // namespace osp
} // namespace openscreen
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