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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_OPENSCREEN_PLATFORM_TLS_CLIENT_CONNECTION_H_
#define COMPONENTS_OPENSCREEN_PLATFORM_TLS_CLIENT_CONNECTION_H_
#include "base/memory/raw_ptr.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "mojo/public/cpp/system/data_pipe.h"
#include "mojo/public/cpp/system/simple_watcher.h"
#include "services/network/public/mojom/tcp_socket.mojom.h"
#include "services/network/public/mojom/tls_socket.mojom.h"
#include "third_party/openscreen/src/platform/api/tls_connection.h"
#include "third_party/openscreen/src/platform/base/error.h"
#include "third_party/openscreen/src/platform/base/ip_address.h"
namespace openscreen_platform {
class TlsClientConnection final : public openscreen::TlsConnection {
public:
TlsClientConnection(
openscreen::IPEndpoint local_address,
openscreen::IPEndpoint remote_address,
mojo::ScopedDataPipeConsumerHandle receive_stream,
mojo::ScopedDataPipeProducerHandle send_stream,
mojo::Remote<network::mojom::TCPConnectedSocket> tcp_socket,
mojo::Remote<network::mojom::TLSClientSocket> tls_socket);
~TlsClientConnection() final;
// TlsConnection overrides.
void SetClient(Client* client) final;
bool Send(openscreen::ByteView data) final;
openscreen::IPEndpoint GetRemoteEndpoint() const final;
// The maximum size of the vector in any single Client::OnRead() callback.
static constexpr size_t kMaxBytesPerRead = 64 << 10; // 64 KB.
private:
// Invoked by |receive_stream_watcher_| when the |receive_stream_|'s status
// has changed. Calls Client::OnRead() if data has become available.
void ReceiveMore(MojoResult result, const mojo::HandleSignalsState& state);
// Classifies MojoResult codes into one of three categories: kOk, kAgain for
// transient errors, or |error_code_if_fatal| for fatal errors. If the result
// is a fatal error, this also invokes Client::OnError().
openscreen::Error::Code ProcessMojoResult(
MojoResult result,
openscreen::Error::Code error_code_if_fatal);
const openscreen::IPEndpoint local_address_;
const openscreen::IPEndpoint remote_address_;
const mojo::ScopedDataPipeConsumerHandle receive_stream_;
const mojo::ScopedDataPipeProducerHandle send_stream_;
const mojo::Remote<network::mojom::TCPConnectedSocket> tcp_socket_;
const mojo::Remote<network::mojom::TLSClientSocket> tls_socket_;
mojo::SimpleWatcher receive_stream_watcher_;
raw_ptr<Client> client_ = nullptr;
};
} // namespace openscreen_platform
#endif // COMPONENTS_OPENSCREEN_PLATFORM_TLS_CLIENT_CONNECTION_H_
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