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albfan / miraclecast

Connect external monitors to your system via Wifi-Display specification also known as Miracast
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Is it possible to cast screen behind a router? #126

Closed jurgenhaas closed 6 years ago

jurgenhaas commented 8 years ago

I'm using a desktop without wifi and it's connected to a router which itself is then connected to wifi-direct enabled TVs. Is it possible to cast my desktop screen to one or many of those TVs? And help would be much appreciated.

albfan commented 8 years ago

I guess no. Is everything connected through cable, isn't it? If that is correct: Your TVs are not in a permanent state looking for video input stream. Only your wifi direct is searching for new connections, and once paired, through miracast protocol get the details of how to do it.

jurgenhaas commented 8 years ago

Well, the TV is connected via Wifi to the router and the PC is connected to the same router via cable.

albfan commented 8 years ago

When devices are in same network maybe TLDS could work

http://www.infoworld.com/article/2615053/wide-area-networking/wi-fi-alliance-starts-certifying-tunnel-technology-for-better-wireless-performa.html http://www.wi-fi.org/downloads-registered-guest/20120808_TDLS_White_Paper_FINAL_0.pdf/29686

but is not implemented. We can start trying to send ad TLDS discovery and see what happens. Are you avaliable to test this?

jurgenhaas commented 8 years ago

@albfan I'd be happy to test and report on this. I'm technical savvy but this sort of stuff is outside of my knowledge area and experience. So if you told me what to test, I'd be able to do that. My OS is Linux (Ubuntu 16.04) and yes, the router, TV and PC are all in the same network.

albfan commented 8 years ago

Sure. I wil prepare a branch which start device handshake with a TLDS discovery message and let's see if TVs answer in some way.

albfan commented 7 years ago

Are you still interested on this?

jurgenhaas commented 7 years ago

Yes I am.

albfan commented 7 years ago

Seems microsoft expanded miracast protocol to allow screen mirroring on local network

https://msdn.microsoft.com/library/mt796768.aspx

I'm just reading the spec. Didn't know what is needed to implement it on linux machines

jurgenhaas commented 7 years ago

Never mind, in the meantime I started using Google Chromecast which is doing quite a lot of what's important to my use cases.

albfan commented 6 years ago

Someday, let's close this by now

z0rb commented 4 years ago

Hi! Has this feature been addressed? My chip is RTL8821CE and the hardware test shows Sorry, wlp3s0 do not support P2P. Don't know if that is a driver issue. I was wondering if that would still be the case going through a router.

cshorler commented 4 years ago

This led me here! https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-mice/9598ca72-d937-466c-95f6-70401bb10bdb?redirectedfrom=MSDN

Will start by trying to inspect beacon frames with wireshark from my blu ray player (which can be a miracast sink)

tnrs commented 4 years ago

Sure. I wil prepare a branch which start device handshake with a TLDS discovery message and let's see if TVs answer in some way.

So what? Does anybody have already done smth on that?

Servail commented 5 months ago

Any news on the feature?

albfan commented 5 months ago

Someboby needs to share a wireshark capture for some device that accept this.

Por send a PR that replaces wifi direct with negotiation over infraestructura as the doc says

Or find any open implementation to inspect

albfan commented 5 months ago

Hmm, https://help.airtame.com/hc/en-us/categories/15003639565597-Airtame-App