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// Copyright 2015 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.
#ifndef BLIMP_NET_PACKET_READER_H_
#define BLIMP_NET_PACKET_READER_H_
#include "blimp/net/blimp_net_export.h"
#include "net/base/completion_callback.h"
#include "net/base/io_buffer.h"
namespace blimp {
// Interface to describe a reader which can read variable-length data packets
// from a connection.
class BLIMP_NET_EXPORT PacketReader {
public:
virtual ~PacketReader() {}
// Reads a packet from the connection.
// Returns the size of the packet, in bytes, if the read operation executed
// successfully.
// Returns ERR_IO_PENDING if the operation will be executed asynchronously.
// |cb| is later invoked with the packet size or an error code.
// All other return values indicate errors and caller should stop using this
// reader.
virtual int ReadPacket(const scoped_refptr<net::GrowableIOBuffer>& buf,
const net::CompletionCallback& cb) = 0;
};
} // namespace blimp
#endif // BLIMP_NET_PACKET_READER_H_
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