| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net/quic/quic_server_packet_writer.h" |
| |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/metrics/sparse_histogram.h" |
| #include "net/base/io_buffer.h" |
| #include "net/base/net_errors.h" |
| |
| namespace net { |
| |
| QuicServerPacketWriter::QuicServerPacketWriter() : weak_factory_(this) { |
| } |
| |
| QuicServerPacketWriter::QuicServerPacketWriter(UDPServerSocket* socket) |
| : weak_factory_(this), |
| socket_(socket), |
| write_blocked_(false) { |
| } |
| |
| QuicServerPacketWriter::~QuicServerPacketWriter() { |
| } |
| |
| WriteResult QuicServerPacketWriter::WritePacket( |
| const char* buffer, size_t buf_len, |
| const net::IPAddressNumber& self_address, |
| const net::IPEndPoint& peer_address) { |
| scoped_refptr<StringIOBuffer> buf( |
| new StringIOBuffer(std::string(buffer, buf_len))); |
| DCHECK(!IsWriteBlocked()); |
| int rv = socket_->SendTo(buf.get(), |
| buf_len, |
| peer_address, |
| base::Bind(&QuicServerPacketWriter::OnWriteComplete, |
| weak_factory_.GetWeakPtr())); |
| WriteStatus status = WRITE_STATUS_OK; |
| if (rv < 0) { |
| if (rv != ERR_IO_PENDING) { |
| UMA_HISTOGRAM_SPARSE_SLOWLY("Net.QuicSession.WriteError", -rv); |
| status = WRITE_STATUS_ERROR; |
| } else { |
| status = WRITE_STATUS_BLOCKED; |
| write_blocked_ = true; |
| } |
| } |
| |
| return WriteResult(status, rv); |
| } |
| |
| bool QuicServerPacketWriter::IsWriteBlockedDataBuffered() const { |
| // UDPServerSocket::SendTo buffers the data until the Write is permitted. |
| return true; |
| } |
| |
| bool QuicServerPacketWriter::IsWriteBlocked() const { |
| return write_blocked_; |
| } |
| |
| void QuicServerPacketWriter::SetWritable() { |
| write_blocked_ = false; |
| } |
| |
| void QuicServerPacketWriter::OnWriteComplete(int rv) { |
| DCHECK_NE(rv, ERR_IO_PENDING); |
| write_blocked_ = false; |
| WriteResult result(rv < 0 ? WRITE_STATUS_ERROR : WRITE_STATUS_OK, rv); |
| connection_->OnPacketSent(result); |
| connection_->OnCanWrite(); |
| } |
| |
| } // namespace net |