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// Copyright (c) 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.
// This file contains data structures and utility functions used for serializing
// and parsing alternative service header values, common to HTTP/1.1 header
// fields and HTTP/2 and QUIC ALTSVC frames. See specification at
// https://tools.ietf.org/id/draft-ietf-httpbis-alt-svc-06.html
#ifndef NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_
#define NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_
#include <vector>
#include "base/basictypes.h"
#include "base/strings/string_piece.h"
#include "net/base/net_export.h"
using base::StringPiece;
namespace net {
namespace test {
class SpdyAltSvcWireFormatPeer;
} // namespace test
class NET_EXPORT_PRIVATE SpdyAltSvcWireFormat {
public:
struct AlternativeService {
std::string protocol_id;
std::string host;
uint16 port;
uint32 max_age;
double p;
AlternativeService() = default;
AlternativeService(const std::string& protocol_id,
const std::string& host,
uint16 port,
uint32 max_age,
double p)
: protocol_id(protocol_id),
host(host),
port(port),
max_age(max_age),
p(p) {}
bool operator==(const AlternativeService& other) const {
return protocol_id == other.protocol_id && host == other.host &&
port == other.port && max_age == other.max_age && p == other.p;
}
};
typedef std::vector<AlternativeService> AlternativeServiceVector;
friend class test::SpdyAltSvcWireFormatPeer;
static bool ParseHeaderFieldValue(StringPiece value,
AlternativeServiceVector* altsvc_vector);
static std::string SerializeHeaderFieldValue(
const AlternativeServiceVector& altsvc_vector);
private:
static void SkipWhiteSpace(StringPiece::const_iterator* c,
StringPiece::const_iterator end);
static bool PercentDecode(StringPiece::const_iterator c,
StringPiece::const_iterator end,
std::string* output);
static bool ParseAltAuthority(StringPiece::const_iterator c,
StringPiece::const_iterator end,
std::string* host,
uint16* port);
static bool ParsePositiveInteger16(StringPiece::const_iterator c,
StringPiece::const_iterator end,
uint16* value);
static bool ParsePositiveInteger32(StringPiece::const_iterator c,
StringPiece::const_iterator end,
uint32* value);
static bool ParseProbability(StringPiece::const_iterator c,
StringPiece::const_iterator end,
double* p);
};
} // namespace net
#endif // NET_SPDY_SPDY_ALT_SVC_WIRE_FORMAT_H_
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