jakob
@marv99 Holz zu verheizen ist so ziemlich Steinzeit… das dreckigste, was der Heizmarkt zu bieten hat…
Und ja… Holz bindet den Kohlenstoff wieder, der bei der Verbrennung entsteht…
Ein Baum der 200, 300 Jahre alt ist, hat schon unfassbar VIEL Kohlenstoff gebunden.
Eine Buche kann da nochmal 600 Jahre drauflegen und erst mit 800, 900 Jahren absterben.
Dann dauert es nochmal 200-300 Jahre bis der Kohlenstoff aus diesem 1 Baum wieder in die Atmosphäre durch Verrottung freigesetzt wurde…
Den Baum jetzt zu verheizen heißt:
Zusätzlichen Kohlenstoff in die Atmosphäre freizusetzen.
Darauf zu verzichten, dass dieser Baum weitere 600 Jahre Kohlenstoff (in zunehmendem Maße) aus der Atmosphäre entfernt (je älter ein Baum umso mehr bindet der in der selben Zeit) und den bereits gebundenen Kohlenstoff noch fast weitere 1000 Jahre gebunden hält.
Wenn wir JETZT möglichst rasch Kohlenstoff aus der Atmosphäre binden wollen, was UNBEDINGT angesagt ist, dann müssen wir jeden einzelnen Baum stehen und alt werden lassen… und neue dazupflanzen.
I had big problems with pairdrop and webrtc which also needs coturn stun or turn(s) protocol…
I found a good hiden hint for coturn and webrtc…
For special usecases you need two stun-server with different ip-addresses to be able to detect a working p2p connection.
You can use 2 different machines in different datacenters or it could also work with the same coturn on a vm with 2 different public ip-addresses.
If a p2o-connection is not possible, a turn(s)-server should be configured in matrix homeserver too.
This can be the same coturn as for stun.
AND… this cost me days of research and trial&error…
For a propper webrtc-connection in a federated system as matrix is, BOTH matrix homeservers must have configured 2 stun and at least one turn(s) server in their homeserver.yaml
I reproduced this every time trying to establish a call from two different mobile-phones with natted internet-connections from different ISPs on different matrix homeservers with different or one with no stun/turn-server configured.
I tried all setups many times.
You won’t find this info elsewhere…
What i still not got working is, ehen one client is connected through vpn, and the other not.
I’ve no chance to establish a connection.
The stun protocoll is btokering a direct p2p-connection between devices, when it’s possible in case of network.
When a direct connection is not possible (both devices are behind differen natted networks/firewalls), turn is needed (turns with ssl) and the audio/video datastream runs through the turn-server.
Are your devices in the same LAN/WLAN? Or in different?
Is one at home, the other in office-network?
If they are in different networks, (it belongs to the clients, not the server!) a stun server is needed outside the network in the free, for both reachable internet!
So both can see and reach the stun/turn server.
I think, your coturn is not not good reachable from outside in your setup, that’s why turn.matrix.org works, and yours not.
Coturn can work as turn and stun at the same time.
Maybe the standardports 5439 and 3478 (each also +1) or the highports are blocked by your firewall.
So you can try to let them listen on port 443 (turns) and 80 (stun) from outside. Most firewalls won’t block those ports…
Or describe please, how exactly do you use your matrix? Where is your homeserver, in which networks are your clients? Do you use vpn?
This is hardcore network-stuff snd not directly related to matrix.
@Lemmchen the different client-networks csn be the problem.
Some providers block webrtc or stun/turn…
Did you try to test your coturn on
webrtc.github.io/samples/src/c…
Delete all servers there and fill in your stun and turn (turn incl. credentials) andvtest ist.
You should get relay (=turn) and srflx (=stun) marked entries
Tell me why i don’t like Starbucks…
First… Starbucks killed my beloved “Kaffehaus”-culture in vienna.
Now this.
I bought only one fucking coffee there in my whole live. It’s years ago. And it will be the only one in my live.
Oh… and Starbucks is master of tax avoidance