mirror of
https://github.com/klzgrad/naiveproxy.git
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106 lines
3.1 KiB
C++
106 lines
3.1 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "net/tools/quic/quic_simple_server_packet_writer.h"
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#include "base/callback_helpers.h"
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#include "base/location.h"
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#include "base/logging.h"
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#include "base/metrics/histogram_macros.h"
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#include "net/base/io_buffer.h"
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#include "net/base/net_errors.h"
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#include "net/socket/udp_server_socket.h"
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#include "net/tools/quic/quic_dispatcher.h"
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namespace net {
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QuicSimpleServerPacketWriter::QuicSimpleServerPacketWriter(
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UDPServerSocket* socket,
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QuicDispatcher* dispatcher)
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: socket_(socket),
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dispatcher_(dispatcher),
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write_blocked_(false),
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weak_factory_(this) {}
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QuicSimpleServerPacketWriter::~QuicSimpleServerPacketWriter() = default;
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WriteResult QuicSimpleServerPacketWriter::WritePacketWithCallback(
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const char* buffer,
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size_t buf_len,
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const QuicIpAddress& self_address,
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const QuicSocketAddress& peer_address,
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PerPacketOptions* options,
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WriteCallback callback) {
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DCHECK(callback_.is_null());
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callback_ = callback;
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WriteResult result =
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WritePacket(buffer, buf_len, self_address, peer_address, options);
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if (result.status != WRITE_STATUS_BLOCKED) {
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callback_.Reset();
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}
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return result;
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}
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void QuicSimpleServerPacketWriter::OnWriteComplete(int rv) {
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DCHECK_NE(rv, ERR_IO_PENDING);
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write_blocked_ = false;
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WriteResult result(rv < 0 ? WRITE_STATUS_ERROR : WRITE_STATUS_OK, rv);
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if (!callback_.is_null()) {
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base::ResetAndReturn(&callback_).Run(result);
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}
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dispatcher_->OnCanWrite();
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}
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bool QuicSimpleServerPacketWriter::IsWriteBlockedDataBuffered() const {
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// UDPServerSocket::SendTo buffers the data until the Write is permitted.
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return true;
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}
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bool QuicSimpleServerPacketWriter::IsWriteBlocked() const {
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return write_blocked_;
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}
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void QuicSimpleServerPacketWriter::SetWritable() {
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write_blocked_ = false;
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}
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WriteResult QuicSimpleServerPacketWriter::WritePacket(
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const char* buffer,
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size_t buf_len,
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const QuicIpAddress& self_address,
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const QuicSocketAddress& peer_address,
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PerPacketOptions* options) {
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scoped_refptr<StringIOBuffer> buf(
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new StringIOBuffer(std::string(buffer, buf_len)));
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DCHECK(!IsWriteBlocked());
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int rv;
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if (buf_len <= static_cast<size_t>(std::numeric_limits<int>::max())) {
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rv = socket_->SendTo(
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buf.get(), static_cast<int>(buf_len),
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peer_address.impl().socket_address(),
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base::Bind(&QuicSimpleServerPacketWriter::OnWriteComplete,
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weak_factory_.GetWeakPtr()));
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} else {
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rv = ERR_MSG_TOO_BIG;
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}
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WriteStatus status = WRITE_STATUS_OK;
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if (rv < 0) {
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if (rv != ERR_IO_PENDING) {
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UMA_HISTOGRAM_SPARSE_SLOWLY("Net.QuicSession.WriteError", -rv);
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status = WRITE_STATUS_ERROR;
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} else {
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status = WRITE_STATUS_BLOCKED;
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write_blocked_ = true;
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}
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}
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return WriteResult(status, rv);
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}
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QuicByteCount QuicSimpleServerPacketWriter::GetMaxPacketSize(
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const QuicSocketAddress& peer_address) const {
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return kMaxPacketSize;
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}
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} // namespace net
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