387 lines
16 KiB
C
387 lines
16 KiB
C
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/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_UDP_TRANSPORT_INTERFACE_UDP_TRANSPORT_H_
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#define WEBRTC_MODULES_UDP_TRANSPORT_INTERFACE_UDP_TRANSPORT_H_
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#include "common_types.h"
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#include "module.h"
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#include "typedefs.h"
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#define SS_MAXSIZE 128
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#define SS_ALIGNSIZE (sizeof (WebRtc_UWord64))
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#define SS_PAD1SIZE (SS_ALIGNSIZE - sizeof(WebRtc_Word16))
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#define SS_PAD2SIZE (SS_MAXSIZE - (sizeof(WebRtc_Word16) + SS_PAD1SIZE +\
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SS_ALIGNSIZE))
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// BSD requires use of HAVE_STRUCT_SOCKADDR_SA_LEN
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namespace webrtc {
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struct SocketAddressIn
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{
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// sin_family should be either AF_INET (IPv4) or AF_INET6 (IPv6)
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#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
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WebRtc_Word8 sin_length;
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WebRtc_Word8 sin_family;
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#else
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WebRtc_Word16 sin_family;
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#endif
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WebRtc_UWord16 sin_port;
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WebRtc_UWord32 sin_addr;
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WebRtc_Word8 sin_zero[8];
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};
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struct Version6InAddress
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{
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union
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{
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WebRtc_UWord8 _s6_u8[16];
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WebRtc_UWord32 _s6_u32[4];
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WebRtc_UWord64 _s6_u64[2];
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} Version6AddressUnion;
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};
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struct SocketAddressInVersion6
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{
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// sin_family should be either AF_INET (IPv4) or AF_INET6 (IPv6)
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#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
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WebRtc_Word8 sin_length;
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WebRtc_Word8 sin_family;
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#else
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WebRtc_Word16 sin_family;
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#endif
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// Transport layer port number.
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WebRtc_UWord16 sin6_port;
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// IPv6 traffic class and flow info or ip4 address.
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WebRtc_UWord32 sin6_flowinfo;
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// IPv6 address
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struct Version6InAddress sin6_addr;
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// Set of interfaces for a scope.
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WebRtc_UWord32 sin6_scope_id;
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};
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struct SocketAddressStorage
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{
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// sin_family should be either AF_INET (IPv4) or AF_INET6 (IPv6)
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#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
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WebRtc_Word8 sin_length;
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WebRtc_Word8 sin_family;
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#else
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WebRtc_Word16 sin_family;
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#endif
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WebRtc_Word8 __ss_pad1[SS_PAD1SIZE];
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WebRtc_UWord64 __ss_align;
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WebRtc_Word8 __ss_pad2[SS_PAD2SIZE];
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};
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struct SocketAddress
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{
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union
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{
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struct SocketAddressIn _sockaddr_in;
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struct SocketAddressInVersion6 _sockaddr_in6;
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struct SocketAddressStorage _sockaddr_storage;
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};
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};
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// Callback class that receives packets from UdpTransport.
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class UdpTransportData
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{
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public:
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virtual ~UdpTransportData() {};
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virtual void IncomingRTPPacket(const WebRtc_Word8* incomingRtpPacket,
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const WebRtc_Word32 rtpPacketLength,
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const WebRtc_Word8* fromIP,
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const WebRtc_UWord16 fromPort) = 0;
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virtual void IncomingRTCPPacket(const WebRtc_Word8* incomingRtcpPacket,
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const WebRtc_Word32 rtcpPacketLength,
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const WebRtc_Word8* fromIP,
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const WebRtc_UWord16 fromPort) = 0;
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};
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class UdpTransport : public Module, public Transport
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{
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public:
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enum
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{
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kIpAddressVersion6Length = 64,
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kIpAddressVersion4Length = 16
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};
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enum ErrorCode
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{
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kNoSocketError = 0,
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kFailedToBindPort = 1,
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kIpAddressInvalid = 2,
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kAddressInvalid = 3,
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kSocketInvalid = 4,
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kPortInvalid = 5,
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kTosInvalid = 6,
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kMulticastAddressInvalid = 7,
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kQosError = 8,
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kSocketAlreadyInitialized = 9,
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kIpVersion6Error = 10,
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FILTER_ERROR = 11,
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kStartReceiveError = 12,
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kStopReceiveError = 13,
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kCannotFindLocalIp = 14,
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kTosError = 16,
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kNotInitialized = 17,
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kPcpError = 18
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};
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// Factory method. Constructor disabled.
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static UdpTransport* Create(const WebRtc_Word32 id,
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WebRtc_UWord8& numSocketThreads);
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static void Destroy(UdpTransport* module);
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// Prepares the class for sending RTP packets to ipAddr:rtpPort and RTCP
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// packets to ipAddr:rtpPort+1 if rtcpPort is zero. Otherwise to
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// ipAddr:rtcpPort.
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virtual WebRtc_Word32 InitializeSendSockets(
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const WebRtc_Word8* ipAddr,
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const WebRtc_UWord16 rtpPort,
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const WebRtc_UWord16 rtcpPort = 0) = 0;
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// Register packetCallback for receiving incoming packets. Set the local
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// RTP port to rtpPort. Bind local IP address to ipAddr. If ipAddr is NULL
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// bind to local IP ANY. Set the local rtcp port to rtcpPort or rtpPort + 1
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// if rtcpPort is 0.
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virtual WebRtc_Word32 InitializeReceiveSockets(
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UdpTransportData* const packetCallback,
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const WebRtc_UWord16 rtpPort,
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const WebRtc_Word8* ipAddr = NULL,
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const WebRtc_Word8* multicastIpAddr = NULL,
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const WebRtc_UWord16 rtcpPort = 0) = 0;
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// Set local RTP port to rtpPort and RTCP port to rtcpPort or rtpPort + 1 if
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// rtcpPort is 0. These ports will be used for sending instead of the local
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// ports set by InitializeReceiveSockets(..).
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virtual WebRtc_Word32 InitializeSourcePorts(
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const WebRtc_UWord16 rtpPort,
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const WebRtc_UWord16 rtcpPort = 0) = 0;
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// Retrieve local ports used for sending if other than the ports specified
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// by InitializeReceiveSockets(..). rtpPort is set to the RTP port.
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// rtcpPort is set to the RTCP port.
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virtual WebRtc_Word32 SourcePorts(WebRtc_UWord16& rtpPort,
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WebRtc_UWord16& rtcpPort) const = 0;
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// Set ipAddr to the IP address that is currently being listened on. rtpPort
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// to the RTP port listened to. rtcpPort to the RTCP port listened on.
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// multicastIpAddr to the multicast IP address group joined (the address
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// is NULL terminated).
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virtual WebRtc_Word32 ReceiveSocketInformation(
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WebRtc_Word8 ipAddr[kIpAddressVersion6Length],
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WebRtc_UWord16& rtpPort,
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WebRtc_UWord16& rtcpPort,
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WebRtc_Word8 multicastIpAddr[kIpAddressVersion6Length]) const = 0;
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// Set ipAddr to the IP address being sent from. rtpPort to the local RTP
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// port used for sending and rtcpPort to the local RTCP port used for
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// sending.
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virtual WebRtc_Word32 SendSocketInformation(
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WebRtc_Word8 ipAddr[kIpAddressVersion6Length],
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WebRtc_UWord16& rtpPort,
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WebRtc_UWord16& rtcpPort) const = 0;
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// Put the IP address, RTP port and RTCP port from the last received packet
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// into ipAddr, rtpPort and rtcpPort respectively.
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virtual WebRtc_Word32 RemoteSocketInformation(
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WebRtc_Word8 ipAddr[kIpAddressVersion6Length],
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WebRtc_UWord16& rtpPort,
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WebRtc_UWord16& rtcpPort) const = 0;
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// Enable/disable quality of service if QoS is true or false respectively.
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// Set the type of service to serviceType, max bitrate in kbit/s to
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// maxBitrate and override DSCP if overrideDSCP is not 0.
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// Note: Must be called both InitializeSendSockets() and
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// InitializeReceiveSockets() has been called.
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virtual WebRtc_Word32 SetQoS(const bool QoS,
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const WebRtc_Word32 serviceType,
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const WebRtc_UWord32 maxBitrate = 0,
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const WebRtc_Word32 overrideDSCP = 0,
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const bool audio = false) = 0;
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// Set QoS to true if quality of service has been turned on. If QoS is true,
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// also set serviceType to type of service and overrideDSCP to override
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// DSCP.
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virtual WebRtc_Word32 QoS(bool& QoS,
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WebRtc_Word32& serviceType,
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WebRtc_Word32& overrideDSCP) const = 0;
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// Set type of service.
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virtual WebRtc_Word32 SetToS(const WebRtc_Word32 DSCP,
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const bool useSetSockOpt = false) = 0;
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// Get type of service configuration.
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virtual WebRtc_Word32 ToS(WebRtc_Word32& DSCP,
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bool& useSetSockOpt) const = 0;
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// Set Priority Code Point (IEEE 802.1Q)
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// Note: for Linux this function will set the priority for the socket,
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// which then can be mapped to a PCP value with vconfig.
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virtual WebRtc_Word32 SetPCP(const WebRtc_Word32 PCP) = 0;
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// Get Priority Code Point
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virtual WebRtc_Word32 PCP(WebRtc_Word32& PCP) const = 0;
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// Enable IPv6.
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// Note: this API must be called before any call to
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// InitializeReceiveSockets() or InitializeSendSockets(). It is not
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// possible to go back to IPv4 (default) after this call.
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virtual WebRtc_Word32 EnableIpV6() = 0;
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// Return true if IPv6 has been enabled.
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virtual bool IpV6Enabled() const = 0;
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// Only allow packets received from filterIPAddress to be processed.
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// Note: must be called after EnableIPv6(), if IPv6 is used.
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virtual WebRtc_Word32 SetFilterIP(
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const WebRtc_Word8 filterIPAddress[kIpAddressVersion6Length]) = 0;
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// Write the filter IP address (if any) to filterIPAddress.
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virtual WebRtc_Word32 FilterIP(
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WebRtc_Word8 filterIPAddress[kIpAddressVersion6Length]) const = 0;
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// Only allow RTP packets from rtpFilterPort and RTCP packets from
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// rtcpFilterPort be processed.
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// Note: must be called after EnableIPv6(), if IPv6 is used.
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virtual WebRtc_Word32 SetFilterPorts(
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const WebRtc_UWord16 rtpFilterPort,
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const WebRtc_UWord16 rtcpFilterPort) = 0;
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// Set rtpFilterPort to the filter RTP port and rtcpFilterPort to the
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// filter RTCP port (if filtering based on port is enabled).
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virtual WebRtc_Word32 FilterPorts(WebRtc_UWord16& rtpFilterPort,
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WebRtc_UWord16& rtcpFilterPort) const = 0;
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// Set the number of buffers that the socket implementation may use for
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// receiving packets to numberOfSocketBuffers. I.e. the number of packets
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// that can be received in parallell.
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// Note: this API only has effect on Windows.
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virtual WebRtc_Word32 StartReceiving(
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const WebRtc_UWord32 numberOfSocketBuffers) = 0;
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// Stop receive incoming packets.
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virtual WebRtc_Word32 StopReceiving() = 0;
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// Return true incoming packets are received.
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virtual bool Receiving() const = 0;
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// Return true if send sockets have been initialized.
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virtual bool SendSocketsInitialized() const = 0;
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// Return true if local ports for sending has been set.
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virtual bool SourcePortsInitialized() const = 0;
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// Return true if receive sockets have been initialized.
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virtual bool ReceiveSocketsInitialized() const = 0;
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// Send data with size length to ip:portnr. The same port as the set
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// with InitializeSendSockets(..) is used if portnr is 0. The same IP
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// address as set with InitializeSendSockets(..) is used if ip is NULL.
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// If isRTCP is true the port used will be the RTCP port.
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virtual WebRtc_Word32 SendRaw(const WebRtc_Word8* data,
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WebRtc_UWord32 length,
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WebRtc_Word32 isRTCP,
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WebRtc_UWord16 portnr = 0,
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const WebRtc_Word8* ip = NULL) = 0;
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// Send RTP data with size length to the address specified by to.
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virtual WebRtc_Word32 SendRTPPacketTo(const WebRtc_Word8* data,
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WebRtc_UWord32 length,
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const SocketAddress& to) = 0;
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// Send RTCP data with size length to the address specified by to.
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virtual WebRtc_Word32 SendRTCPPacketTo(const WebRtc_Word8* data,
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WebRtc_UWord32 length,
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const SocketAddress& to) = 0;
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// Send RTP data with size length to ip:rtpPort where ip is the ip set by
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// the InitializeSendSockets(..) call.
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virtual WebRtc_Word32 SendRTPPacketTo(const WebRtc_Word8* data,
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WebRtc_UWord32 length,
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WebRtc_UWord16 rtpPort) = 0;
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// Send RTCP data with size length to ip:rtcpPort where ip is the ip set by
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// the InitializeSendSockets(..) call.
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virtual WebRtc_Word32 SendRTCPPacketTo(const WebRtc_Word8* data,
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WebRtc_UWord32 length,
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WebRtc_UWord16 rtcpPort) = 0;
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// Set the IP address to which packets are sent to ipaddr.
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virtual WebRtc_Word32 SetSendIP(
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const WebRtc_Word8 ipaddr[kIpAddressVersion6Length]) = 0;
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// Set the send RTP and RTCP port to rtpPort and rtcpPort respectively.
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virtual WebRtc_Word32 SetSendPorts(const WebRtc_UWord16 rtpPort,
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const WebRtc_UWord16 rtcpPort = 0) = 0;
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// Retreive the last registered error code.
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virtual ErrorCode LastError() const = 0;
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// Put the local IPv4 address in localIP.
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// Note: this API is for IPv4 only.
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static WebRtc_Word32 LocalHostAddress(WebRtc_UWord32& localIP);
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// Put the local IP6 address in localIP.
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// Note: this API is for IPv6 only.
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static WebRtc_Word32 LocalHostAddressIPV6(WebRtc_UWord8 localIP[16]);
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// Return a copy of hostOrder (host order) in network order.
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static WebRtc_UWord16 Htons(WebRtc_UWord16 hostOrder);
|
||
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||
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// Return a copy of hostOrder (host order) in network order.
|
||
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static WebRtc_UWord32 Htonl(WebRtc_UWord32 hostOrder);
|
||
|
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|
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// Return IPv4 address in ip as 32 bit integer.
|
||
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static WebRtc_UWord32 InetAddrIPV4(const WebRtc_Word8* ip);
|
||
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|
||
|
|
// Convert the character string src into a network address structure in
|
||
|
|
// the af address family and put it in dst.
|
||
|
|
// Note: same functionality as inet_pton(..)
|
||
|
|
static WebRtc_Word32 InetPresentationToNumeric(WebRtc_Word32 af,
|
||
|
|
const WebRtc_Word8* src,
|
||
|
|
void* dst);
|
||
|
|
|
||
|
|
// Set ip and sourcePort according to address. As input parameter ipSize
|
||
|
|
// is the length of ip. As output parameter it's the number of characters
|
||
|
|
// written to ip (not counting the '\0' character).
|
||
|
|
// Note: this API is only implemented on Windows and Linux.
|
||
|
|
static WebRtc_Word32 IPAddress(const SocketAddress& address,
|
||
|
|
WebRtc_Word8* ip,
|
||
|
|
WebRtc_UWord32& ipSize,
|
||
|
|
WebRtc_UWord16& sourcePort);
|
||
|
|
|
||
|
|
// Set ip and sourcePort according to address. As input parameter ipSize
|
||
|
|
// is the length of ip. As output parameter it's the number of characters
|
||
|
|
// written to ip (not counting the '\0' character).
|
||
|
|
// Note: this API is only implemented on Windows and Linux.
|
||
|
|
// Additional note: this API caches the address of the last call to it. If
|
||
|
|
// address is likley to be the same for multiple calls it may be beneficial
|
||
|
|
// to call this API instead of IPAddress().
|
||
|
|
virtual WebRtc_Word32 IPAddressCached(const SocketAddress& address,
|
||
|
|
WebRtc_Word8* ip,
|
||
|
|
WebRtc_UWord32& ipSize,
|
||
|
|
WebRtc_UWord16& sourcePort) = 0;
|
||
|
|
|
||
|
|
// Return true if ipaddr is a valid IP address.
|
||
|
|
// If ipV6 is false ipaddr is interpreted as an IPv4 address otherwise it
|
||
|
|
// is interptreted as IPv6.
|
||
|
|
static bool IsIpAddressValid(const WebRtc_Word8* ipaddr, const bool ipV6);
|
||
|
|
};
|
||
|
|
} // namespace webrtc
|
||
|
|
|
||
|
|
#endif // WEBRTC_MODULES_UDP_TRANSPORT_INTERFACE_UDP_TRANSPORT_H_
|