Update of periscope streaming API

[DmT021]

Hi, As I can see, you create a broadcast with /liveorigin path in the rtmp URL. When I create a broadcast i get vidmanlive application in response of createBroadcast function. Do you get the same?

[MichaelZaporozhets]

Found another reference with some more information in the security logs on iOS:

Mar 17 11:57:55 securityd[210] <Error> [SecLogging{} ]: securityd_xpc_dictionary_handler Periscope[1267] copy_matching Error Domain=NSOSStatusErrorDomain Code=-50 "query missing class name" UserInfo={NSDescription=query missing class name}

[Pmmlabs]

@MichaelZaporozhets this error only when running stream created with ffmpeg?

[MichaelZaporozhets]

@Pmmlabs yep

[lepikhinb]

Is there any progress on it, guys?

[MichaelZaporozhets]

@lepikhinb I'm still working on it but with no progress :(

[lepikhinb]

@MichaelZaporozhets have you tried to upload a replay at least?

[Pmmlabs]

@DmT021 is right, decrypted rtmp dump is needed. But currently I am not able to start broadcast on smartphone, somehow the app stucks on "initializing video stream" message. Maybe it is because I am on nightly build of CyanogenMod? I will try to rollback to 5.0 on weekend.

[Pmmlabs]

No luck, my smartphone refuses to start broadcasting, and I can't dump rtmp traffic :(

[MichaelZaporozhets]

@lepikhinb I tried uploading a replay but I couldn't figure out the method being used. Seems to through a post to signer.periscope rather any clear api.

What is the best way for me to try and read the decrypted rtmp dump?

[Pmmlabs]

What is the best way for me to try and read the decrypted rtmp dump?

sslsplit, Mallory Proxy, MITMPROXY, WebScarab, Burp Proxy, Zaproxy

or just boot Kali Linux - there are many useful tools.

[MichaelZaporozhets]

So I just stumbled upon a little bit of info by accident.

If you create a broadcast on iOS and you call it 'My test' and the swipe down twice you seem to get some data:

Quick Note: at the start that Q parameter seems to hit a high number and then changes back to 0 throughout the rest of the stream.

[lepikhinb]

@MichaelZaporozhets I see that info independently on broadcast name

[MichaelZaporozhets]

@lepikhinb really? nevermind then. Looked useful at the time

[Pmmlabs]

Intercepted part of video stream, with metadata capture484371534.zip

[minwater]

Also when you publish broadcast with friend_chat=true it works fine without any metadata for everybody except your friends. Hope, it can help you somehow

[MichaelZaporozhets]

@minwater Could you please clarify. Are you saying that if you write in friend_chat=true, the stream does not crash on iOS?

If so, this means we're most likely looking for an issue with the pubnub settings as opposed to rtmp metadata..

[Pmmlabs]

@minwater thanks, you are right! Broadcast don't crash the apps, both Android and iPhone! It will be useful! @MichaelZaporozhets yes, seems to be some problem with pubnub, I think need to create room somehow or so.

[minwater]

@Pmmlabs let me know if you solve this problem, please. And also the room_id is always equals with broadcast id. But I don't know what to do with this id. I've tried to create Pubnub instance with publisher and subscriber key, set auth key. I recieve messages when somebody tries to connect the channel or write some comments(when I create empty broadcast), but when I try to upload video with ffmpeg broadcast crashes for everybody who has access to writing comments.

[MichaelZaporozhets]

What's most strange is the fact that android was fine with whatever we're missing...

For anyone using charles, I've got an iphone charles session for periscope that i've been using as a reference: iphone-success-bc.chls.zip

[aakldey]

Does charles support websocket capturing?

[MichaelZaporozhets]

@aakldey since v3.11 https://twitter.com/charlesproxy/status/631226639490289664

[MichaelZaporozhets]

So I'm getting back onto this today- has anyone made any progress I can work off yet? We know it's got to do with the chat and my suspicion is we're not passing a time sync var somewhere...