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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_DIRECT_SOCKETS_UDP_SOCKET_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_DIRECT_SOCKETS_UDP_SOCKET_H_
#include <optional>
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "services/network/public/mojom/restricted_udp_socket.mojom-blink.h"
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_property.h"
#include "third_party/blink/renderer/modules/direct_sockets/socket.h"
#include "third_party/blink/renderer/modules/direct_sockets/udp_readable_stream_wrapper.h"
#include "third_party/blink/renderer/modules/direct_sockets/udp_socket_mojo_remote.h"
#include "third_party/blink/renderer/modules/direct_sockets/udp_writable_stream_wrapper.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
#include "third_party/blink/renderer/platform/bindings/trace_wrapper_v8_reference.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/heap/member.h"
#include "third_party/blink/renderer/platform/loader/fetch/unique_identifier.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_receiver.h"
#include "third_party/blink/renderer/platform/mojo/heap_mojo_remote.h"
#include "third_party/blink/renderer/platform/scheduler/public/frame_or_worker_scheduler.h"
namespace net {
class IPEndPoint;
} // namespace net
namespace blink {
class ScriptState;
class SocketCloseOptions;
class UDPSocketOpenInfo;
class UDPSocketOptions;
// UDPSocket interface from udp_socket.idl
class MODULES_EXPORT UDPSocket final : public ScriptWrappable,
public Socket,
public ActiveScriptWrappable<UDPSocket> {
DEFINE_WRAPPERTYPEINFO();
public:
// IDL definitions
static UDPSocket* Create(ScriptState*,
const UDPSocketOptions*,
ExceptionState&);
// Socket:
ScriptPromise<UDPSocketOpenInfo> opened(ScriptState*) const;
ScriptPromise<IDLUndefined> close(ScriptState*, ExceptionState&) override;
public:
explicit UDPSocket(ScriptState*);
~UDPSocket() override;
// Validates options and calls OpenBoundUDPSocket(...) or
// OpenConnectedUDPSocket() depending on the provided options.
bool Open(const UDPSocketOptions*, ExceptionState&);
// On net::OK initializes readable/writable streams and resolves opened
// promise. Otherwise rejects the opened promise.
void OnConnectedUDPSocketOpened(
mojo::PendingReceiver<network::mojom::blink::UDPSocketListener>,
int32_t result,
const std::optional<net::IPEndPoint>& local_addr,
const std::optional<net::IPEndPoint>& peer_addr);
// On net::OK initializes readable/writable streams and resolves opened
// promise. Otherwise rejects the opened promise.
void OnBoundUDPSocketOpened(
mojo::PendingReceiver<network::mojom::blink::UDPSocketListener>,
int32_t result,
const std::optional<net::IPEndPoint>& local_addr);
void Trace(Visitor*) const override;
// ActiveScriptWrappable:
bool HasPendingActivity() const override;
// ExecutionContextLifecycleStateObserver:
void ContextDestroyed() override;
// Socket:
void SetState(State state) override;
private:
void FinishOpen(
network::mojom::RestrictedUDPSocketMode,
mojo::PendingReceiver<network::mojom::blink::UDPSocketListener>,
int32_t result,
const std::optional<net::IPEndPoint>& local_addr,
const std::optional<net::IPEndPoint>& peer_addr);
void FailOpenWith(int32_t error);
mojo::PendingReceiver<network::mojom::blink::RestrictedUDPSocket>
GetUDPSocketReceiver();
// Invoked if mojo pipe for |service_| breaks.
void OnServiceConnectionError() override;
// Invoked if mojo pipe for |udp_socket_| breaks.
void CloseOnError();
// Resets mojo resources held by this class.
void ReleaseResources();
// Invoked when one of the streams (readable or writable) closes.
// `exception` is non-empty iff the stream closed with an error.
void OnStreamClosed(v8::Local<v8::Value> exception, int net_error);
void OnBothStreamsClosed();
Member<UDPSocketMojoRemote> udp_socket_;
Member<ScriptPromiseProperty<UDPSocketOpenInfo, DOMException>> opened_;
Member<UDPReadableStreamWrapper> readable_stream_wrapper_;
Member<UDPWritableStreamWrapper> writable_stream_wrapper_;
// Always less or equal to 2 (readable + writable).
int streams_closed_count_ = 0;
// Stores the first encountered stream error to be reported after both streams
// close.
TraceWrapperV8Reference<v8::Value> stream_error_;
// Stores the net error when the socket is aborted
int abort_net_error_;
// Unique id for devtools inspector_network_agent.
uint64_t inspector_id_ = CreateUniqueIdentifier();
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_DIRECT_SOCKETS_UDP_SOCKET_H_
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