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/*
* Copyright 2012 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef P2P_BASE_TRANSPORT_DESCRIPTION_FACTORY_H_
#define P2P_BASE_TRANSPORT_DESCRIPTION_FACTORY_H_
#include <memory>
#include "p2p/base/ice_credentials_iterator.h"
#include "p2p/base/transport_description.h"
#include "rtc_base/rtc_certificate.h"
namespace rtc {
class SSLIdentity;
}
namespace cricket {
struct TransportOptions {
bool ice_restart = false;
bool prefer_passive_role = false;
// If true, ICE renomination is supported and will be used if it is also
// supported by the remote side.
bool enable_ice_renomination = false;
};
// Creates transport descriptions according to the supplied configuration.
// When creating answers, performs the appropriate negotiation
// of the various fields to determine the proper result.
class TransportDescriptionFactory {
public:
// Default ctor; use methods below to set configuration.
TransportDescriptionFactory();
~TransportDescriptionFactory();
SecurePolicy secure() const { return secure_; }
// The certificate to use when setting up DTLS.
const rtc::scoped_refptr<rtc::RTCCertificate>& certificate() const {
return certificate_;
}
// Specifies the transport security policy to use.
void set_secure(SecurePolicy s) { secure_ = s; }
// Specifies the certificate to use (only used when secure != SEC_DISABLED).
void set_certificate(
const rtc::scoped_refptr<rtc::RTCCertificate>& certificate) {
certificate_ = certificate;
}
// Creates a transport description suitable for use in an offer.
std::unique_ptr<TransportDescription> CreateOffer(
const TransportOptions& options,
const TransportDescription* current_description,
IceCredentialsIterator* ice_credentials) const;
// Create a transport description that is a response to an offer.
//
// If |require_transport_attributes| is true, then TRANSPORT category
// attributes are expected to be present in |offer|, as defined by
// sdp-mux-attributes, and null will be returned otherwise. It's expected
// that this will be set to false for an m= section that's in a BUNDLE group
// but isn't the first m= section in the group.
std::unique_ptr<TransportDescription> CreateAnswer(
const TransportDescription* offer,
const TransportOptions& options,
bool require_transport_attributes,
const TransportDescription* current_description,
IceCredentialsIterator* ice_credentials) const;
private:
bool SetSecurityInfo(TransportDescription* description,
ConnectionRole role) const;
SecurePolicy secure_;
rtc::scoped_refptr<rtc::RTCCertificate> certificate_;
};
} // namespace cricket
#endif // P2P_BASE_TRANSPORT_DESCRIPTION_FACTORY_H_
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