RTCP Stack

1) Netty 사용2) RTP 기반 테스트 활용3) Single or Compound 패킷 테스트 가능 (by wireshark)4) Restcomm 오픈 소스 활용    - RTP Clock    - RTP Statistics    - NTP handling5) [EXTENDED] RTCP Feedback Message 지원 (for video streaming) (개발 중)    - Transport-layer        - NACK        - TMMBR        - TMMBN    - Payload-specific        - PLI        - SLI        - RPSI        - FIR        - TSTR        - TSTN        - VBCM        - AFB6) [EXTENDED] RTCP Feedback Information 을 이용한 RTP PAUSE, RESUME 기능 지원 (개발 중)    - PAUSE    - RESUME    - PAUSED    - REFUSED

Reference

RTCP REGULAR

RTCP EXTENDED

Feedback message

Feedback Information for RTP Control (PAUSE, RESUME, etc)

오픈 소스

Example (RFC 1889)

Single packet

11:57:34.603 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][srCreationTest] RtcpPacket: {  "rtcpHeader": {    "version": 2,    "padding": 0,    "paddingBytes": 0,    "resourceCount": 1,    "packetType": 200,    "length": 12,    "ssrc": 26422708  },  "rtcpFormat": {    "mswNts": 933147501,    "lswNts": 933147500,    "rts": 250880,    "spc": 1568,    "soc": 2508,    "rtcpReportBlockList": [      {        "ssrc": 1569920308,        "f": 0,        "c": 1,        "ehsn": 50943,        "j": 76,        "lsr": 933147500,        "dlsr": 35390      }    ]  }}11:57:34.606 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][srCreationTest] RtcpPacketTest byte data: (size=52)[-127, -56, 0, 12, 1, -109, 45, -76, 55, -98, -77, 109, 55, -98, -77, 108, 0, 3, -44, 0, 0, 0, 6, 32, 0, 0, 9, -52, 93, -109, 21, 52, 0, 0, 0, 1, 0, 0, -58, -1, 0, 0, 0, 76, 55, -98, -77, 108, 0, 0, -118, 62]11:57:34.609 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][srCreationTest] RtcpPacketTest byte data: 81 c8 00 0c 01 93 2d b4 37 9e b3 6d 37 9e b3 6c 00 03 d4 00 00 00 06 20 00 00 09 cc 5d 93 15 34 00 00 00 01 00 00 c6 ff 00 00 00 4c 37 9e b3 6c 00 00 8a 3e 11:57:34.622 [main] DEBUG instance.BaseEnvironment - Success to send the data. (size=52)11:57:34.634 [nioEventLoopGroup-3-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] remainDataLength: [52], index: [0]11:57:34.634 [nioEventLoopGroup-3-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] RtcpHeader[8]: [{  "version": 2,  "padding": 0,  "paddingBytes": 0,  "resourceCount": 1,  "packetType": 200,  "length": 12,  "ssrc": 26422708}]index: [8]11:57:34.635 [nioEventLoopGroup-3-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] totalDataLength: [52], index: [8], PacketLength: [12], curRemainDataLength: [44]11:57:34.636 [nioEventLoopGroup-3-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] RtcpPacket: (size=8+44){  "rtcpHeader": {    "version": 2,    "padding": 0,    "paddingBytes": 0,    "resourceCount": 1,    "packetType": 200,    "length": 12,    "ssrc": 26422708  },  "rtcpFormat": {    "mswNts": 933147501,    "lswNts": 933147500,    "rts": 250880,    "spc": 1568,    "soc": 2508,    "rtcpReportBlockList": [      {        "ssrc": 1569920308,        "f": 0,        "c": 1,        "ehsn": 50943,        "j": 76,        "lsr": 933147500,        "dlsr": 35390      }    ]  }}11:57:34.640 [nioEventLoopGroup-3-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] remainDataLength: [0], index: [52]

Compound packet

12:40:38.721 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][srCreationTest] rtcpPacketPaddingResult: {  "length": 12,  "paddingBytes": 0,  "padding": false}12:40:38.723 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][srCreationTest] RtcpPacket: {  "rtcpHeader": {    "version": 2,    "padding": 0,    "paddingBytes": 0,    "resourceCount": 1,    "packetType": 200,    "length": 12,    "ssrc": 26422708  },  "rtcpFormat": {    "mswNts": 935731649,    "lswNts": 935731649,    "rts": 250880,    "spc": 1568,    "soc": 2508,    "rtcpReportBlockList": [      {        "ssrc": 1569920308,        "f": 0,        "c": 1,        "ehsn": 50943,        "j": 76,        "lsr": 935731649,        "dlsr": 35390      }    ]  }}12:40:38.731 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][srCreationTest] RtcpPacketTest byte data: (size=52)[-127, -56, 0, 12, 1, -109, 45, -76, 55, -58, 33, -63, 55, -58, 33, -63, 0, 3, -44, 0, 0, 0, 6, 32, 0, 0, 9, -52, 93, -109, 21, 52, 0, 0, 0, 1, 0, 0, -58, -1, 0, 0, 0, 76, 55, -58, 33, -63, 0, 0, -118, 62]12:40:38.733 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][srCreationTest] RtcpPacketTest byte data: 81 c8 00 0c 01 93 2d b4 37 c6 21 c1 37 c6 21 c1 00 03 d4 00 00 00 06 20 00 00 09 cc 5d 93 15 34 00 00 00 01 00 00 c6 ff 00 00 00 4c 37 c6 21 c1 00 00 8a 3e 12:40:38.740 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][sdesCreationTest] rtcpPacketPaddingResult: {  "length": 18,  "paddingBytes": 0,  "padding": false}12:40:38.741 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][sdesCreationTest] RtcpPacket: {  "rtcpHeader": {    "version": 2,    "padding": 0,    "paddingBytes": 0,    "resourceCount": 3,    "packetType": 202,    "length": 18,    "ssrc": 0  },  "rtcpFormat": {    "sdesChunkList": [      {        "ssrc": 1569920308,        "sdesItemList": [          {            "sdesType": "CNAME",            "length": 5,            "text": "CNAME"          },          {            "sdesType": "PHONE",            "length": 5,            "text": "PHONE"          },          {            "sdesType": "TOOL",            "length": 4,            "text": "TOOL"          },          {            "sdesType": "END",            "length": 0          }        ]      },      {        "ssrc": 26422708,        "sdesItemList": [          {            "sdesType": "CNAME",            "length": 5,            "text": "CNAME"          },          {            "sdesType": "LOC",            "length": 3,            "text": "LOC"          },          {            "sdesType": "EMAIL",            "length": 5,            "text": "EMAIL"          },          {            "sdesType": "END",            "length": 0          }        ]      },      {        "ssrc": 328590819,        "sdesItemList": [          {            "sdesType": "CNAME",            "length": 5,            "text": "CNAME"          },          {            "sdesType": "LOC",            "length": 3,            "text": "LOC"          },          {            "sdesType": "END",            "length": 0          }        ]      }    ]  }}12:40:38.748 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][sdesCreationTest] RtcpPacketTest byte data: (size=76)[-125, -54, 0, 18, 93, -109, 21, 52, 1, 5, 67, 78, 65, 77, 69, 4, 5, 80, 72, 79, 78, 69, 6, 4, 84, 79, 79, 76, 0, 0, 0, 0, 1, -109, 45, -76, 1, 5, 67, 78, 65, 77, 69, 5, 3, 76, 79, 67, 3, 5, 69, 77, 65, 73, 76, 0, 19, -107, -27, -29, 1, 5, 67, 78, 65, 77, 69, 5, 3, 76, 79, 67, 0, 0, 0, 0]12:40:38.755 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][sdesCreationTest] RtcpPacketTest byte data: 83 ca 00 12 5d 93 15 34 01 05 43 4e 41 4d 45 04 05 50 48 4f 4e 45 06 04 54 4f 4f 4c 00 00 00 00 01 93 2d b4 01 05 43 4e 41 4d 45 05 03 4c 4f 43 03 05 45 4d 41 49 4c 00 13 95 e5 e3 01 05 43 4e 41 4d 45 05 03 4c 4f 43 00 00 00 00 12:40:38.755 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][byeCreationTest] rtcpPacketPaddingResult: {  "length": 3,  "paddingBytes": 0,  "padding": false}12:40:38.757 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][byeCreationTest] RtcpPacket: {  "rtcpHeader": {    "version": 2,    "padding": 0,    "paddingBytes": 0,    "resourceCount": 1,    "packetType": 203,    "length": 3,    "ssrc": 26422708  },  "rtcpFormat": {    "length": 7,    "reason": "GOODBYE"  }}12:40:38.758 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][byeCreationTest] RtcpPacketTest byte data: (size=16)[-127, -53, 0, 3, 1, -109, 45, -76, 7, 71, 79, 79, 68, 66, 89, 69]12:40:38.758 [main] DEBUG rtcp.RtcpPacketTest - [RtcpPacketTest][byeCreationTest] RtcpPacketTest byte data: 81 cb 00 03 01 93 2d b4 07 47 4f 4f 44 42 59 45 12:40:38.765 [main] DEBUG instance.BaseEnvironment - [RtcpTest][multiRtcpPacketTest] rtcpCompoundPacket: {  "rtcpPacketList": [    {      "rtcpHeader": {        "version": 2,        "padding": 0,        "paddingBytes": 0,        "resourceCount": 1,        "packetType": 200,        "length": 12,        "ssrc": 26422708      },      "rtcpFormat": {        "mswNts": 935731649,        "lswNts": 935731649,        "rts": 250880,        "spc": 1568,        "soc": 2508,        "rtcpReportBlockList": [          {            "ssrc": 1569920308,            "f": 0,            "c": 1,            "ehsn": 50943,            "j": 76,            "lsr": 935731649,            "dlsr": 35390          }        ]      }    },    {      "rtcpHeader": {        "version": 2,        "padding": 0,        "paddingBytes": 0,        "resourceCount": 3,        "packetType": 202,        "length": 18,        "ssrc": 0      },      "rtcpFormat": {        "sdesChunkList": [          {            "ssrc": 1569920308,            "sdesItemList": [              {                "sdesType": "CNAME",                "length": 5,                "text": "CNAME"              },              {                "sdesType": "PHONE",                "length": 5,                "text": "PHONE"              },              {                "sdesType": "TOOL",                "length": 4,                "text": "TOOL"              },              {                "sdesType": "END",                "length": 0              }            ]          },          {            "ssrc": 26422708,            "sdesItemList": [              {                "sdesType": "CNAME",                "length": 5,                "text": "CNAME"              },              {                "sdesType": "LOC",                "length": 3,                "text": "LOC"              },              {                "sdesType": "EMAIL",                "length": 5,                "text": "EMAIL"              },              {                "sdesType": "END",                "length": 0              }            ]          },          {            "ssrc": 328590819,            "sdesItemList": [              {                "sdesType": "CNAME",                "length": 5,                "text": "CNAME"              },              {                "sdesType": "LOC",                "length": 3,                "text": "LOC"              },              {                "sdesType": "END",                "length": 0              }            ]          }        ]      }    },    {      "rtcpHeader": {        "version": 2,        "padding": 0,        "paddingBytes": 0,        "resourceCount": 1,        "packetType": 203,        "length": 3,        "ssrc": 26422708      },      "rtcpFormat": {        "length": 7,        "reason": "GOODBYE"      }    }  ]}12:40:38.766 [main] DEBUG instance.BaseEnvironment - Success to send the data. (size=144)12:40:38.767 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] remainDataLength: [144], index: [0]12:40:38.767 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] RtcpHeader[8]: [{  "version": 2,  "padding": 0,  "paddingBytes": 0,  "resourceCount": 1,  "packetType": 200,  "length": 12,  "ssrc": 26422708}]index: [8]12:40:38.770 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] totalDataLength: [144], index: [8], PacketLength: [12], curRemainDataLength: [44]12:40:38.770 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] RtcpPacket: (size=8+44){  "rtcpHeader": {    "version": 2,    "padding": 0,    "paddingBytes": 0,    "resourceCount": 1,    "packetType": 200,    "length": 12,    "ssrc": 26422708  },  "rtcpFormat": {    "mswNts": 935731649,    "lswNts": 935731649,    "rts": 250880,    "spc": 1568,    "soc": 2508,    "rtcpReportBlockList": [      {        "ssrc": 1569920308,        "f": 0,        "c": 1,        "ehsn": 50943,        "j": 76,        "lsr": 935731649,        "dlsr": 35390      }    ]  }}12:40:38.776 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] remainDataLength: [92], index: [52]12:40:38.776 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] RtcpHeader[4]: [{  "version": 2,  "padding": 0,  "paddingBytes": 0,  "resourceCount": 1,  "packetType": 202,  "length": 18,  "ssrc": 0}]index: [56]12:40:38.777 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] totalDataLength: [144], index: [56], PacketLength: [18], curRemainDataLength: [72]12:40:38.777 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] RtcpPacket: (size=4+72){  "rtcpHeader": {    "version": 2,    "padding": 0,    "paddingBytes": 0,    "resourceCount": 1,    "packetType": 202,    "length": 18,    "ssrc": 0  },  "rtcpFormat": {    "sdesChunkList": [      {        "ssrc": 1569920308,        "sdesItemList": [          {            "sdesType": "CNAME",            "length": 5,            "text": "CNAME"          },          {            "sdesType": "PHONE",            "length": 5,            "text": "PHONE"          },          {            "sdesType": "TOOL",            "length": 4,            "text": "TOOL"          },          {            "sdesType": "END",            "length": 0          }        ]      },      {        "ssrc": 26422708,        "sdesItemList": [          {            "sdesType": "CNAME",            "length": 5,            "text": "CNAME"          },          {            "sdesType": "LOC",            "length": 3,            "text": "LOC"          },          {            "sdesType": "EMAIL",            "length": 5,            "text": "EMAIL"          },          {            "sdesType": "END",            "length": 0          }        ]      },      {        "ssrc": 328590819,        "sdesItemList": [          {            "sdesType": "CNAME",            "length": 5,            "text": "CNAME"          },          {            "sdesType": "LOC",            "length": 3,            "text": "LOC"          },          {            "sdesType": "END",            "length": 0          }        ]      }    ]  }}12:40:38.784 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] remainDataLength: [16], index: [128]12:40:38.784 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] RtcpHeader[8]: [{  "version": 2,  "padding": 0,  "paddingBytes": 0,  "resourceCount": 1,  "packetType": 203,  "length": 3,  "ssrc": 26422708}]index: [136]12:40:38.786 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] totalDataLength: [144], index: [136], PacketLength: [3], curRemainDataLength: [8]12:40:38.786 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] RtcpPacket: (size=8+8){  "rtcpHeader": {    "version": 2,    "padding": 0,    "paddingBytes": 0,    "resourceCount": 1,    "packetType": 203,    "length": 3,    "ssrc": 26422708  },  "rtcpFormat": {    "length": 7,    "reason": "GOODBYE"  }}12:40:38.787 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] remainDataLength: [0], index: [144]12:40:38.787 [nioEventLoopGroup-6-1] DEBUG network.rtcp.handler.RtcpServerHandler - [RtcpServerHandler<RECEIVER/127.0.0.1:5000>] RtcpCompoundPacket: (size=144){  "rtcpPacketList": [    {      "rtcpHeader": {        "version": 2,        "padding": 0,        "paddingBytes": 0,        "resourceCount": 1,        "packetType": 200,        "length": 12,        "ssrc": 26422708      },      "rtcpFormat": {        "mswNts": 935731649,        "lswNts": 935731649,        "rts": 250880,        "spc": 1568,        "soc": 2508,        "rtcpReportBlockList": [          {            "ssrc": 1569920308,            "f": 0,            "c": 1,            "ehsn": 50943,            "j": 76,            "lsr": 935731649,            "dlsr": 35390          }        ]      }    },    {      "rtcpHeader": {        "version": 2,        "padding": 0,        "paddingBytes": 0,        "resourceCount": 1,        "packetType": 202,        "length": 18,        "ssrc": 0      },      "rtcpFormat": {        "sdesChunkList": [          {            "ssrc": 1569920308,            "sdesItemList": [              {                "sdesType": "CNAME",                "length": 5,                "text": "CNAME"              },              {                "sdesType": "PHONE",                "length": 5,                "text": "PHONE"              },              {                "sdesType": "TOOL",                "length": 4,                "text": "TOOL"              },              {                "sdesType": "END",                "length": 0              }            ]          },          {            "ssrc": 26422708,            "sdesItemList": [              {                "sdesType": "CNAME",                "length": 5,                "text": "CNAME"              },              {                "sdesType": "LOC",                "length": 3,                "text": "LOC"              },              {                "sdesType": "EMAIL",                "length": 5,                "text": "EMAIL"              },              {                "sdesType": "END",                "length": 0              }            ]          },          {            "ssrc": 328590819,            "sdesItemList": [              {                "sdesType": "CNAME",                "length": 5,                "text": "CNAME"              },              {                "sdesType": "LOC",                "length": 3,                "text": "LOC"              },              {                "sdesType": "END",                "length": 0              }            ]          }        ]      }    },    {      "rtcpHeader": {        "version": 2,        "padding": 0,        "paddingBytes": 0,        "resourceCount": 1,        "packetType": 203,        "length": 3,        "ssrc": 26422708      },      "rtcpFormat": {        "length": 7,        "reason": "GOODBYE"      }    }  ]}

Example (RFC 5104, 4585, 2032)