webrtc/rtc_base/nethelper.h
Zhi Huang 942bc2e4b9 Reland: Replaced the SignalSelectedCandidatePairChanged with a new signal.
|packet_overhead| field is added to rtc::NetworkRoute structure.

In PackTransportInternal:
1. network_route() is added which returns the current network route.
2. debug_name() is removed.
3. transport_name() is moved from DtlsTransportInternal and
IceTransportInternal to PacketTransportInternal.

When the selected candidate pair is changed, the P2PTransportChannel
will fire the SignalNetworkRouteChanged instead of
SignalSelectedCandidatePairChanged to upper layers.

The Rtp/SrtpTransport takes the responsibility of calculating the
transport overhead from the BaseChannel so that the BaseChannel
doesn't need to depend on P2P layer transports.

TBR=pthatcher@webrtc.org

Bug: webrtc:7013
Change-Id: If9928b25a7259544c2d9c42048b53ab24292fc67
Reviewed-on: https://webrtc-review.googlesource.com/22767
Reviewed-by: Zhi Huang <zhihuang@webrtc.org>
Commit-Queue: Zhi Huang <zhihuang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20664}
2017-11-13 22:50:11 +00:00

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C++

/*
* Copyright 2017 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 RTC_BASE_NETHELPER_H_
#define RTC_BASE_NETHELPER_H_
#include <cstdlib>
#include <string>
// This header contains helper functions and constants used by different types
// of transports.
namespace cricket {
extern const char UDP_PROTOCOL_NAME[];
extern const char TCP_PROTOCOL_NAME[];
extern const char SSLTCP_PROTOCOL_NAME[];
extern const char TLS_PROTOCOL_NAME[];
// Get the network layer overhead per packet based on the IP address family.
int GetIpOverhead(int addr_family);
// Get the transport layer overhead per packet based on the protocol.
int GetProtocolOverhead(const std::string& protocol);
} // namespace cricket
#endif // RTC_BASE_NETHELPER_H_