Python SessionDescription Examples, aiortc.sdp.SessionDescription Python Examples

Example #1

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File: sdp_doctor.py Project: xcesiv/voip-tester

def remove_all_candidates(original_sdp):
    # filter out all candidates from the SDP directly
    session_description = SessionDescription.parse(original_sdp)

    for media in session_description.media:
        print("media", media)
        media.ice_candidates = []
        media.ice_candidates_complete = True

        # remove a=ice-options: to prevent Trickle ICE, as we need to
        # generate all the candidates at once as we only get one chance to
        # answer over a REST call.
        media.ice_options = None

    return str(session_description)

Example #2

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    def test_datachannel_firefox(self):
        d = SessionDescription.parse(lf2crlf("""v=0
o=mozilla...THIS_IS_SDPARTA-58.0.1 7514673380034989017 0 IN IP4 0.0.0.0
s=-
t=0 0
a=sendrecv
a=fingerprint:sha-256 39:4A:09:1E:0E:33:32:85:51:03:49:95:54:0B:41:09:A2:10:60:CC:39:8F:C0:C4:45:FC:37:3A:55:EA:11:74
a=group:BUNDLE sdparta_0
a=ice-options:trickle
a=msid-semantic:WMS *
m=application 45791 DTLS/SCTP 5000
c=IN IP4 192.168.99.58
a=candidate:0 1 UDP 2122187007 192.168.99.58 45791 typ host
a=candidate:1 1 UDP 2122252543 2a02:a03f:3eb0:e000:b0aa:d60a:cff2:933c 44087 typ host
a=candidate:2 1 TCP 2105458943 192.168.99.58 9 typ host tcptype active
a=candidate:3 1 TCP 2105524479 2a02:a03f:3eb0:e000:b0aa:d60a:cff2:933c 9 typ host tcptype active
a=sendrecv
a=end-of-candidates
a=ice-pwd:d30a5aec4dd81f07d4ff3344209400ab
a=ice-ufrag:9889e0c4
a=mid:sdparta_0
a=sctpmap:5000 webrtc-datachannel 256
a=setup:actpass
a=max-message-size:1073741823
"""))  # noqa
        self.assertEqual(len(d.media), 1)
        self.assertEqual(d.media[0].kind, 'application')
        self.assertEqual(d.media[0].host, '192.168.99.58')
        self.assertEqual(d.media[0].port, 45791)
        self.assertEqual(d.media[0].profile, 'DTLS/SCTP')
        self.assertEqual(d.media[0].fmt, [5000])
        self.assertEqual(d.media[0].rtpmap, {})
        self.assertEqual(d.media[0].sctpmap, {
            5000: 'webrtc-datachannel 256',
        })

        # ice
        self.assertEqual(len(d.media[0].ice_candidates), 4)
        self.assertEqual(d.media[0].ice_ufrag, '9889e0c4')
        self.assertEqual(d.media[0].ice_pwd, 'd30a5aec4dd81f07d4ff3344209400ab')

        # dtls
        self.assertEqual(
            d.media[0].dtls_fingerprint,
            '39:4A:09:1E:0E:33:32:85:51:03:49:95:54:0B:41:09:A2:10:60:CC:39:8F:C0:C4:45:FC:37:3A:55:EA:11:74')  # noqa
        self.assertEqual(d.media[0].dtls_setup, 'actpass')

Example #3

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File: sdp_doctor.py Project: xcesiv/voip-tester

def doctor_sdp(original_sdp, sole_wanted_candidate):
    # filter out irrelevant candidates from the SDP directly
    session_description = SessionDescription.parse(original_sdp)

    for media in session_description.media:
        print("media", media)
        # note that this could cause problems with multiple media
        # as I guess you should only use each candidate once…
        media.ice_candidates = [sole_wanted_candidate]
        media.ice_candidates_complete = True

        # remove a=ice-options: to prevent Trickle ICE, as we need to
        # generate all the candidates at once as we only get one chance to
        # answer over a REST call.
        media.ice_options = None

    return str(session_description)

Example #4

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File: datachannel_test.py Project: xcesiv/voip-tester

async def setup_test(connection: RTCPeerConnection, offer) -> RTCSessionDescription:
    description = RTCSessionDescription(offer["sdp"], offer["type"])

    session_description = SessionDescription.parse(offer["sdp"])
    if len(session_description.media) != 1:
        raise ValueError("Only one media channel accepted.")

    media = session_description.media[0]
    if len(media.ice_candidates) != 1:
        raise ValueError("Only one ICE candidate accepted.")

    if not media.ice_candidates_complete:
        raise ValueError("ICE candidates must be completed")

    candidate = media.ice_candidates[0]

    await connection.setRemoteDescription(description)
    await connection.setLocalDescription(await connection.createAnswer())

    logger.debug(f"[{candidate}] Beginning test with this candidate…")

    @connection.on("datachannel")
    def on_datachannel(channel: RTCDataChannel):
        logger.debug(f"[{candidate}] Established an RTCDataChannel")

        @channel.on("message")
        def on_message(message):
            logger.debug(f"[{candidate}] Received a message")

            if message == MAGIC_QUESTION:
                channel.send(MAGIC_ANSWER)
            else:
                channel.close()
                asyncio.ensure_future(connection.close())

    # Make the connection time out
    asyncio.get_event_loop().call_later(
        TIMEOUT_TIME, asyncio.ensure_future, connection.close()
    )

    # this is the answer to return
    return connection.localDescription

Example #5

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