shim_v0.3

var AUDIO_SDP_TEMPLATE = "v=0\r\no=- 3576587452431152789 2 IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\nm=audio 1 RTP/SAVPF 111 0 8\r\nc=IN IP4 0.0.0.0\r\na=rtcp:1 IN IP4 0.0.0.0\r\na=ice-ufrag:{2}\r\na=ice-pwd:{3}\r\na=fingerprint:{0} {1}\r\na=setup:actpass\r\na=mid:audio\r\na=sendrecv\r\na=rtcp-mux\r\na=rtpmap:111 opus/48000/2\r\na=rtpmap:0 PCMU/8000\r\na=rtpmap:8 PCMA/8000\r\na=ssrc:748822434 cname:OfO7E/zpleLM7chT\r\na=ssrc:748822434 msid:klYE03jD2B0DB3SriGc3gurGtX1PF8tUr5S8 1229f9a2-1418-4a47-8d9b-c94d356ce409\r\na=ssrc:748822434 mslabel:klYE03jD2B0DB3SriGc3gurGtX1PF8tUr5S8\r\na=ssrc:748822434 label:1229f9a2-1418-4a47-8d9b-c94d356ce409\r\n";

if (!String.prototype.format) {
  String.prototype.format = function() {
    var args = arguments;
    return this.replace(/{(\d+)}/g, function(match, number) {
      return typeof args[number] != 'undefined'
        ? args[number]
        : match
      ;
    });
  };
}

if (!String.prototype.format) {
  String.prototype.format = function() {
    var args = arguments;
    return this.replace(/{(\d+)}/g, function(match, number) {
      return typeof args[number] != 'undefined'
        ? args[number]
        : match
      ;
    });
  };
}

function encodeSDP(params) {
    return AUDIO_SDP_TEMPLATE.format(
        params.fingerprint.algorithm,
        params.fingerprint.value,
        params.ice.ufrag,
        params.ice.pwd);
}

function parseSDP(sdp) {
    var candidate = /candidate:(.*) 1 (.*) (.*) (.*) (.*) typ (.*) generation/g.exec(sdp);

    var params = {
        fingerprint: {
            algorithm: "sha-256",
            value: /fingerprint:sha-256 (.*)\r\n/g.exec(sdp)[1]
        },
        ice: {
            ufrag: /ice-ufrag:(.*)\r\n/g.exec(sdp)[1],
            pwd: /ice-pwd:(.*)\r\n/g.exec(sdp)[1],
            candidates: [ {
                component: 1,
                foundation: candidate[1],
                priority: candidate[3],
                protocol: candidate[2],
                ip: candidate[4],
                port: candidate[5],
                type: candidate[6]
            }
            ]
        }
    };
    return params;
}

// Test encodeSDP
// console.log(encodeSDP({
//     fingerprint: {
//         algorithm: "sha-256",
//         value: "18:B1:2D:AD:11:FF:3D:3D:A5:F7:3C:E1:03:25:C7:4B:6D:15:11:1C:DB:2B:77:4D:C5:71:BB:A8:7A:63:6E:15"
//     },
//     ice: {
//         ufrag: "Gqy2a9xzp5ukk0AB",
//         pwd: "124+uYPaafADxAQ0f6Bb7tH1"
//     }
// }).replace(new RegExp('\r\n', 'g'), '\\r\\n'));

// Test parseSDP
var TEST_SDP = "v=0\r\n" +
"o=- 7919217494324810599 2 IN IP4 127.0.0.1\r\n" +
"s=-\r\n" +
"t=0 0\r\n" +
"a=group:BUNDLE audio video\r\n" +
"a=msid-semantic: WMS lRLrH0K3Eaxn715rbIcSZ0jFL4bgNMFy56mf\r\n" +
"m=audio 9 RTP/SAVPF 111 103 104 9 0 8 126\r\n" +
"c=IN IP4 0.0.0.0\r\n" +
"a=rtcp:9 IN IP4 0.0.0.0\r\n" +
"a=ice-ufrag:cBvQ1Cs3EW3Iz82r\r\n" +
"a=ice-pwd:o3F95RUbKfEqFUuKe8DiQ35a\r\n" +
"a=fingerprint:sha-256 C9:E0:27:41:4F:39:F2:7C:57:B8:14:37:60:0F:DA:90:18:09:C9:32:71:23:62:0C:CA:38:4E:6D:27:6E:9C:73\r\n" +
"a=setup:actpass\r\n" +
"a=mid:audio\r\n" +
"a=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-level\r\n" +
"a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\n" +
"a=sendrecv\r\n" +
"a=rtcp-mux\r\n" +
"a=rtpmap:111 opus/48000/2\r\n" +
"a=fmtp:111 minptime=10; useinbandfec=1\r\n" +
"a=rtpmap:103 ISAC/16000\r\n" +
"a=rtpmap:104 ISAC/32000\r\n" +
"a=rtpmap:9 G722/8000\r\n" +
"a=rtpmap:0 PCMU/8000\r\n" +
"a=rtpmap:8 PCMA/8000\r\n" +
"a=rtpmap:126 telephone-event/8000\r\n" +
"a=maxptime:60\r\n" +
"a=ssrc:666934306 cname:3XG98hRzkouimdbF\r\n" +
"a=ssrc:666934306 msid:lRLrH0K3Eaxn715rbIcSZ0jFL4bgNMFy56mf 0b87e258-f61f-4462-a520-482f772f735c\r\n" +
"a=ssrc:666934306 mslabel:lRLrH0K3Eaxn715rbIcSZ0jFL4bgNMFy56mf\r\n" +
"a=ssrc:666934306 label:0b87e258-f61f-4462-a520-482f772f735c\r\n" +
 +
"a=candidate:1796272311 1 UDP 2130706431 54.148.21.243 45618 typ host generation 0\r\n" +
"a=candidate:1796272311 2 UDP 2130706430 54.148.21.243 45618 typ host generation 0\r\n" +
"m=video 9 RTP/SAVPF 100 96\r\n" +
"c=IN IP4 0.0.0.0\r\n" +
"a=rtcp:9 IN IP4 0.0.0.0\r\n" +
"a=ice-ufrag:cBvQ1Cs3EW3Iz82r\r\n" +
"a=ice-pwd:o3F95RUbKfEqFUuKe8DiQ35a\r\n" +
"a=fingerprint:sha-256 C9:E0:27:41:4F:39:F2:7C:57:B8:14:37:60:0F:DA:90:18:09:C9:32:71:23:62:0C:CA:38:4E:6D:27:6E:9C:73\r\n" +
"a=setup:actpass\r\n" +
"a=mid:video\r\n" +
"a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\r\n" +
"a=extmap:3 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time\r\n" +
"a=extmap:4 urn:3gpp:video-orientation\r\n" +
"a=sendrecv\r\n" +
"a=rtcp-mux\r\n" +
"a=rtpmap:100 VP8/90000\r\n" +
"a=rtcp-fb:100 ccm fir\r\n" +
"a=rtcp-fb:100 nack\r\n" +
"a=rtcp-fb:100 nack pli\r\n" +
"a=rtcp-fb:100 goog-remb\r\n" +
"a=rtpmap:96 rtx/90000\r\n" +
"a=fmtp:96 apt=100\r\n" +
"a=ssrc-group:FID 1917303818 3760583944\r\n" +
"a=ssrc:1917303818 cname:3XG98hRzkouimdbF\r\n" +
"a=ssrc:1917303818 msid:lRLrH0K3Eaxn715rbIcSZ0jFL4bgNMFy56mf 4c59ac63-d85d-4d65-a8f7-8f4ea0b9edc9\r\n" +
"a=ssrc:1917303818 mslabel:lRLrH0K3Eaxn715rbIcSZ0jFL4bgNMFy56mf\r\n" +
"a=ssrc:1917303818 label:4c59ac63-d85d-4d65-a8f7-8f4ea0b9edc9\r\n" +
"a=ssrc:3760583944 cname:3XG98hRzkouimdbF\r\n" +
"a=ssrc:3760583944 msid:lRLrH0K3Eaxn715rbIcSZ0jFL4bgNMFy56mf 4c59ac63-d85d-4d65-a8f7-8f4ea0b9edc9\r\n" +
"a=ssrc:3760583944 mslabel:lRLrH0K3Eaxn715rbIcSZ0jFL4bgNMFy56mf\r\n" +
"a=ssrc:3760583944 label:4c59ac63-d85d-4d65-a8f7-8f4ea0b9edc9\r\n" +
"a=candidate:1796272311 1 UDP 2130706431 54.148.21.243 45618 typ host generation 0\r\n" +
"a=candidate:1796272311 2 UDP 2130706430 54.148.21.243 45618 typ host generation 0\r\n"

console.log(JSON.stringify(parseSDP(TEST_SDP)));