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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_TCP_READABLE_STREAM_WRAPPER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_DIRECT_SOCKETS_TCP_READABLE_STREAM_WRAPPER_H_
#include "base/functional/callback.h"
#include "mojo/public/cpp/system/data_pipe.h"
#include "mojo/public/cpp/system/handle_signals_state.h"
#include "mojo/public/cpp/system/simple_watcher.h"
#include "net/base/net_errors.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/modules/direct_sockets/stream_wrapper.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/bindings/exception_code.h"
#include "third_party/blink/renderer/platform/bindings/trace_wrapper_v8_reference.h"
#include "third_party/blink/renderer/platform/heap/member.h"
#include "third_party/blink/renderer/platform/heap/prefinalizer.h"
#include "third_party/blink/renderer/platform/heap/visitor.h"
namespace blink {
// Helper class to read from a mojo consumer handle
class MODULES_EXPORT TCPReadableStreamWrapper
: public GarbageCollected<TCPReadableStreamWrapper>,
public ReadableByteStreamWrapper {
USING_PRE_FINALIZER(TCPReadableStreamWrapper, Dispose);
public:
TCPReadableStreamWrapper(ScriptState*,
CloseOnceCallback,
mojo::ScopedDataPipeConsumerHandle,
uint64_t inspector_id);
// ReadableStreamWrapper:
void Pull() override;
void CloseStream() override;
void ErrorStream(int32_t error_code) override;
void Trace(Visitor*) const override;
private:
// Called when |data_pipe_| becomes readable or errored.
void OnHandleReady(MojoResult, const mojo::HandleSignalsState&);
// Called when |data_pipe_| gets reset.
void OnHandleReset(MojoResult, const mojo::HandleSignalsState&);
// Resets |data_pipe_| and clears the watcher.
void ResetPipe();
// Prepares the object for destruction.
void Dispose();
CloseOnceCallback on_close_;
mojo::ScopedDataPipeConsumerHandle data_pipe_;
// Only armed when we need to read something.
mojo::SimpleWatcher read_watcher_;
// Always armed to detect pipe close.
mojo::SimpleWatcher close_watcher_;
// Indicates whether peer closed gracefully (EOF).
bool graceful_peer_shutdown_ = false;
// Stores a v8::Local<v8::Value> V8DOMException inside.
TraceWrapperV8Reference<v8::Value> pending_exception_;
int pending_net_error_ = net::OK;
// Unique id for devtools inspector_network_agent.
const uint64_t inspector_id_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_DIRECT_SOCKETS_TCP_READABLE_STREAM_WRAPPER_H_
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