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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_WEBSOCKETS_WEBSOCKET_EXTENSION_H_
#define NET_WEBSOCKETS_WEBSOCKET_EXTENSION_H_
#include <string>
#include <vector>
#include "net/base/net_export.h"
namespace net {
// A WebSocketExtension instance represents a WebSocket extension specified
// in RFC6455.
class NET_EXPORT_PRIVATE WebSocketExtension {
public:
// Note that RFC6455 does not allow a parameter with an empty value.
class NET_EXPORT_PRIVATE Parameter final {
public:
// Construct a parameter which does not have a value.
explicit Parameter(const std::string& name);
// Construct a parameter with a non-empty value.
Parameter(const std::string& name, const std::string& value);
bool operator==(const Parameter&) const;
bool HasValue() const { return !value_.empty(); }
const std::string& name() const { return name_; }
const std::string& value() const { return value_; }
// The default copy constructor and the assignment operator are defined:
// we need them.
private:
std::string name_;
std::string value_;
};
WebSocketExtension();
explicit WebSocketExtension(const std::string& name);
WebSocketExtension(const WebSocketExtension& other);
~WebSocketExtension();
void Add(const Parameter& parameter) { parameters_.push_back(parameter); }
const std::string& name() const { return name_; }
const std::vector<Parameter>& parameters() const { return parameters_; }
// Equivalent() returns true if `name_` and `parameters_` are the same, even
// if the order of keys in `parameters_` is different.
bool Equivalent(const WebSocketExtension& other) const;
std::string ToString() const;
// The default copy constructor and the assignment operator are defined:
// we need them.
private:
std::string name_;
std::vector<Parameter> parameters_;
};
} // namespace net
#endif // NET_WEBSOCKETS_WEBSOCKET_EXTENSION_H_
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