sdp-parsing

A simple node.js module that parses SDP (Session Description Protocol) strings.

This doesn't do full parse of elements.

Mostly, we are interested in converting the lines to media objects that then can be more easily inspected/matched.

Ex:

const parse = require('sdp-parsing')

var s = `v=0
o=- 345678 345979 IN IP4 10.0.1.2 s=My sample redundant flow
i=2 channels: c6, c7
t=0 0
a=sendonly
m=audio 5004 RTP/AVP 0 18
c=IN IP4 239.69.22.33/32
a=rtpmap:0 PCMU/8000/1
a=rtpmap:18 G729/8000/1
a=ptime:1
a=fake:one
a=fake:two
a=fake:three
m=application 8888 TCP/MRCPv2 1
a=setup:passsive
a=connection:new
a=channel:814e650d-2b1b-46f2-bdfb-09e8f90272ba@speechsynth
a=cmid:1`.replace(/\n/g, "\r\n")

var res = parse(s)
console.log(JSON.stringify(res, null, 2))

Running the above will result in:

{
  "media": [
    {
      "desc": {
        "type": "audio",
        "port": "5004",
        "protocol": "RTP/AVP",
        "formats": [
          "0",
          "18"
        ]
      },
      "conn": {
        "network_type": "IN",
        "address_type": "IP4",
        "address": "239.69.22.33/32"
      },
      "val_attrs": {
        "rtpmap": [
          "0 PCMU/8000/1",
          "18 G729/8000/1"
        ],
        "ptime": "1",
        "fake": [
          "one",
          "two",
          "three"
        ]
      }
    },
    {
      "desc": {
        "type": "application",
        "port": "8888",
        "protocol": "TCP/MRCPv2",
        "formats": [
          "1"
        ]
      },
      "val_attrs": {
        "setup": "passsive",
        "connection": "new",
        "channel": "814e650d-2b1b-46f2-bdfb-09e8f90272ba@speechsynth",
        "cmid": "1"
      }
    }
  ],
  "v": "0",
  "o": "- 345678 345979 IN IP4 10.0.1.2 s=My sample redundant flow",
  "i": "2 channels: c6, c7",
  "t": "0 0",
  "prop_attrs": [
    "sendonly"
  ]
}