rtp_forward API error 456

[be...@newrow.com]

Hey guys, I'm trying to forward a stream from one janus to a different one, both hosted on 2 different virtual machines

no matter what I do , I keep getting the same API error, 

Got a Janus API request from janus.transport.websockets (0x7f30a8006b40)

[(null)] Returning Janus API error 456 (Missing mandatory element (transaction))

once I add the transaction field

I get Got a Janus API request from janus.transport.websockets (0x7f30a8006b40)

[(null)] Returning Janus API error 456 (Missing mandatory element (janus))

which both aren't listed in the videoroom rtp_forward documentation -> https://github.com/meetecho/janus-gateway/blob/master/plugins/janus_videoroom.c

after ive added "janus": "message"

and still getting another API error (janus API  error 457 unhandled reqest 'message' at this path... ), after numerous attempts, following related topics in the group, couldn't find a working solution, came here..

I'm using websockets to communicate between my signaling server and the janus service

I'm probably missing something.

The steps that I have done so far:

1. configured streaming plugin to expect to receive audio stream on port x and video stream on port y
2. published a stream from a webserver to my signaling server , and published it to Janus media server
3. sent an rtp_forward message to Janus server A to forward that stream to Janus server B

note both januses are running on debug level 7 , im expecting to see that stream running on both servers after forwarding, without no success

configurations:

configured the streaming plugin to 

[gstreamer-testing]

type = rtp

id = 4

description = Opus/VP8 live stream coming from gstreamer

audio = yes

video = yes

audioport = 10030

audiopt = 111

audiortpmap = opus/48000/2

videoport = 10035

videopt = 100

videortpmap = VP8/90000

secret = password

rtp forwarding with failed attempts:

attempt 1.

{
	"videoroom" : "rtp_forward",
	"room" : <unique numeric ID, same as request>,
	"publisher_id" : <unique numeric ID, same as request>,
	"rtp_stream" : {
	"host" : "<host this forwarder is streaming to, same as request>",
	"audio" : <audio port, same as request if configured>,
	"audio_stream_id" : <unique numeric ID assigned to the audio RTP forwarder, if any>,
	"video" : <video port, same as request if configured>,
	"video_stream_id" : <unique numeric ID assigned to the main video RTP forwarder, if any>,
	"video_2" : <second video port, same as request if configured>,
	"video_stream_id_2" : <unique numeric ID assigned to the second video RTP forwarder, if any>,
	"video_3" : <third video port, same as request if configured>,
	"video_stream_id_3" : <unique numeric ID assigned to the third video RTP forwarder, if any>,
	"data" : <data port, same as request if configured>,
	"data_stream_id" : <unique numeric ID assigned to datachannel messages forwarder, if any>
	}
	}

Attempt 2.

{
	"request" : "rtp_forward",
	"room" : <unique numeric ID of the room the publisher is in>,
	"publisher_id" : <unique numeric ID of the publisher to relay externally>,
	"host" : "<host address to forward the RTP and data packets to>",
	"audio_port" : <port to forward the audio RTP packets to>,
	"audio_ssrc" : <audio SSRC to use to use when streaming; optional>,
	"audio_ptype" : <audio payload type to use when streaming; optional>,
	"video_port" : <port to forward the video RTP packets to>,
	"video_ssrc" : <video SSRC to use to use when streaming; optional>,
	"video_ptype" : <video payload type to use when streaming; optional>,
	"video_port_2" : <if simulcasting or doing VP9-SVC, port to forward the video RTP packets from the second substream/layer to>,
	"video_ssrc_2" : <if simulcasting or doing VP9-SVC, video SSRC to use to use the second substream/layer; optional>,
	"video_ptype_2" : <if simulcasting or doing VP9-SVC, video payload type to use the second substream/layer; optional>,
	"video_port_3" : <if simulcasting or doing VP9-SVC, port to forward the video RTP packets from the third substream/layer to>,
	"video_ssrc_3" : <if simulcasting or doing VP9-SVC, video SSRC to use to use the third substream/layer; optional>,
	"video_ptype_3" : <if simulcasting or doing VP9-SVC, video payload type to use the third substream/layer; optional>,
	"data_port" : <port to forward the datachannel messages to>,
	"srtp_suite" : <length of authentication tag (32 or 80); optional>,
	"srtp_crypto" : "<key to use as crypto (base64 encoded key as in SDES); optional>"
	}

attempt 3.

{

"videoroom":"rtp_forward",

         "room":"487",

         "publisher_id": 123,

         "rtp_stream" :{

             "host",ip

          }

     }

attempt 4.

{"body":{"request":"rtp_forward","publisher_id":3153615434288867,"room": 1234, "host":"127.0.0.1","port":5000,"secret":"adminpwd" }, "janus":"message","apisecret" : "janusrocks","transaction":"o4vup0qoomd"}

[Lorenzo Miniero]

You're likely using the Janus API wrong: https://janus.conf.meetecho.com/docs/rest

L.

[be...@newrow.com]

great, managed to get a successful response for the rtp forwarding video and audio,
but I can't see the stream on the other janus machine while im on debug level 7...

Is that normal?