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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/base/socket_reader.h"
#include "base/compiler_specific.h"
#include "base/functional/bind.h"
#include "base/location.h"
#include "base/task/single_thread_task_runner.h"
#include "net/base/io_buffer.h"
#include "net/base/net_errors.h"
#include "net/socket/socket.h"
namespace remoting {
namespace {
int kReadBufferSize = 4096;
} // namespace
SocketReader::SocketReader() : socket_(nullptr) {}
SocketReader::~SocketReader() = default;
void SocketReader::Init(net::Socket* socket,
ReadResultCallback read_result_callback) {
DCHECK(socket);
DCHECK(!socket_);
socket_ = socket;
read_result_callback_ = std::move(read_result_callback);
DoRead();
}
void SocketReader::DoRead() {
while (true) {
read_buffer_ = base::MakeRefCounted<net::IOBufferWithSize>(kReadBufferSize);
int result = socket_->Read(
read_buffer_.get(), kReadBufferSize,
base::BindOnce(&SocketReader::OnRead, weak_factory_.GetWeakPtr()));
HandleReadResult(result);
if (result <= 0) {
break;
}
}
}
void SocketReader::OnRead(int result) {
HandleReadResult(result);
if (result > 0) {
DoRead();
}
}
void SocketReader::HandleReadResult(int result) {
if (result != net::ERR_IO_PENDING) {
if (result < 0) {
read_buffer_.reset();
}
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE,
base::BindOnce(&SocketReader::CallCallback, weak_factory_.GetWeakPtr(),
read_buffer_, result));
}
}
void SocketReader::CallCallback(scoped_refptr<net::IOBuffer> data, int result) {
std::move(read_result_callback_).Run(data, result);
}
} // namespace remoting
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