SSL connection abruptly cut in certain countries #553

Someone7un7 · 2022-10-08T14:41:06Z

I can't connect to any of syncplay servers
What do I do?????

Et0h · 2022-10-11T21:55:03Z

What operating system are you using and what country are you connecting from? It is working fine for me using Windows 10 in the UK, but #554 reports someone having trouble connecting on Windows 11 due to a certificate error.

Et0h · 2022-10-11T22:08:31Z

Please run Syncplay with the --debug command line switch and let me know of anything potentially relevant which gets put into the syncplay.log or .Syncplay.log file in %APPDATA%.

Et0h · 2022-10-12T09:40:56Z

Also do you get any errors when you visit the https://syncplay.pl/ website in your browser?

Someone7un7 · 2022-10-15T14:26:58Z

no no I can simply visit syncplay.pl website without any error I mean I don't need to change my IP or something , and that --debug command which you said didn't do anything , by the way , I'm from Iran

Et0h · 2022-10-18T19:02:58Z

This might be the same issue as #554 and so might have the same solution.

Could you please try again with the build from https://github.com/Syncplay/syncplay/actions/runs/3235129755 and let me know if that fixes it.

Someone7un7 · 2022-10-19T15:20:21Z

This might be the same issue as #554 and so might have the same solution.

Could you please try again with the build from https://github.com/Syncplay/syncplay/actions/runs/3235129755 and let me know if that fixes it.

I tried it and it didn't work , these are the notifications that are shown:

[17:30:02] Attempting to connect to syncplay.pl:8995
[17:30:03] Attempting secure connection
[17:30:03] Successfully reached syncplay.pl (151.80.32.178)
[17:30:03] Connection with server lost, attempting to reconnect
[17:30:03] Attempting secure connection

I don't know why it doesn't work ☹
It was really a cool app

by the way, I have windows 10
tried everything buddy
I have no idea

maybe it is because of the internet problems that we have in Iran these days , but I don't think so because my friends can use syncplay , they can connect

Et0h · 2022-11-05T23:18:50Z

@Someone7un7: With #565 I've made it give more explicit error messages when the connection is lost.

Please try it out and let me know what error it gives: https://github.com/Syncplay/syncplay/actions/runs/3402038853 (scroll to the artifacts at the bottom and choose Syncplay-1.7.0-Setup.exe or Syncplay_1.7.0_Portable).

Someone7un7 · 2022-12-01T05:16:18Z

Nothing worked , I'm using VPN

Et0h · 2022-12-01T09:38:08Z

Thanks for that clarification. There is some discussion of how to modify Syncplay code to run through a proxy at #346 but generally speaking Syncplay was only ever designed/intended to connect directly to the server. As such this seems less like a bug and more like a feature request.

daniel-123 · 2022-12-01T09:42:55Z

@Someone7un7

Is the connection working fine without VPN?

Syncplay does use somewhat less typical port, so it's hard to tell whether VPN would interfere with it or not.

Gieted · 2022-12-03T21:44:25Z

I'm experiencing the same problem (started to happen just recently). I'm not using any VPN.

Someone7un7 · 2022-12-04T08:24:28Z

@Someone7un7

Is the connection working fine without VPN?

Syncplay does use somewhat less typical port, so it's hard to tell whether VPN would interfere with it or not.

When I use the app without VPN it doesn't work so I have to use VPN to connect to the servers . It works only with VPN and when I use VPN it works perfectly

Someone7un7 · 2022-12-04T08:27:01Z

I'm experiencing the same problem (started to happen just recently). I'm not using any VPN.

This is exactly what I experience when I try to connect to the app servers without VPN

albertosottile · 2022-12-22T14:46:14Z

@Someone7un7 Can you try again with the build included here https://github.com/Syncplay/syncplay/actions/runs/3402038853 ? Please start Syncplay with the --debug argument as that provides a more detailed error message. I would appreciate if you could try with and without VPN, and report here the printed debug messages. Thanks.

Someone7un7 · 2023-01-01T17:16:46Z

@Someone7un7 Can you try again with the build included here https://github.com/Syncplay/syncplay/actions/runs/3402038853 ? Please start Syncplay with the --debug argument as that provides a more detailed error message. I would appreciate if you could try with and without VPN, and report here the printed debug messages. Thanks.

I've just seen your comment and did what you asked me to do and it is just like before , it only works with VPN

Someone7un7 · 2023-01-14T07:35:58Z

Problem is solved , now everything is ok and I can use Syncplay without vpn

Et0h · 2023-01-18T22:57:02Z

It's good to hear that the problem is solved, although I'm not sure quite sure what changed.

Talkbullet · 2023-03-17T14:51:30Z

Hi, I also got the same problem while using Syncplay.
Every 3-5 minutes the connection to the server disappears, although everything is fine with the Internet.
Is there any way to fix this?

Windows 11, Syncplay v1.7.0 development, no VPN
If you need to send any info, please let me know.

Et0h · 2023-03-17T21:41:59Z

@Talkbullet A few questions:

What country are you connecting from?
Are you directly connected to the Internet or using ethernet or WiFi?
What is your Internet connection? It is Cable internet? Fibre? ADSL? Mobile?
What result do you get from https://www.waveform.com/tools/bufferbloat ?

If you are able to run your own server then please do so and see if you have the same issues.

Talkbullet · 2023-03-18T18:46:26Z

@Et0h

Lithuania
Using provider's router
Sometimes wi-fi, but most of the time with cable
https://www.waveform.com/tools/bufferbloat?test-id=98d05bbe-5f20-439a-be32-17a572b2d686

Don't know how to start my own server, so i can't check it

Talkbullet · 2023-04-07T20:08:45Z

@Et0h

Hi again, after the update it started giving errors like this.
Any ideas what it could mean?
Repeats every 5 or 15 minutes.

Et0h · 2023-04-16T12:01:39Z

@Talkbullet When it disconnects does it successfully reconnect quickly and without issue?

Syncplay's client and server both talk regularly to stay in sync and both use a timeout threshold of 12.5 seconds. This means that if 12.5 seconds has passed since the last relevant update they assume that the connection has failed and reconnect. What I don't know is what the timeout is from the TCP/TLS protocol which Syncplay servers and clients use - I assume it is whatever the default is for Endpoints (or is it something set at an OS level?).

Syncplay's timeouts might be more strict than some systems, but it prevents situations where you can be disconnected for a long time and nobody realises it because the server and clients think the connection is still alive when it is not (which I seem to recall being an issue with Mumble, at least in the past). It might also be the case that other systems do reconnecting silently so you don't even know you were disconnected and reconnected.

Disconnection could potentially happen more frequently if you either have a flakey connection to your ISP, or if the connection between the ISP and Syncplay's public servers (which are hosted in France) is flakey.

A separate issue is if the server has been on too long and needs to be restarted to work reliably again. In my understanding it has not been long since the server was last restarted, and it'd start effecting a lot more people. However, you can always try a different port (I think syncplay.pl:8996) to see if it helps.

Something else you could try is to use a third-party client such as https://syncplay.net/ and see if the issue still occurs.

Finally, you could try running you own server (or getting a friend to do so) following the instructions at https://syncplay.pl/guide/server/

soredake · 2023-11-03T09:41:08Z

Meh, syncplay worked fine for some years, now i'm getting this on 8999 port.

Et0h · 2023-11-04T18:33:30Z

Thanks for reporting this issue. The port 8999 instance on the Syncplay server has been restarted and so should be working fine now. As far as I can tell the other instances were unaffected.

soredake · 2023-11-23T19:14:09Z

@Et0h can you make servers auto-restart after some time? This will probably help with this issue.

soredake · 2023-12-28T12:52:53Z

8999 / 8998 both unusable for me without vpn, again, this issue needs a solution.

Et0h · 2023-12-28T17:00:25Z

The server has been restarted and has now been set to automatically restart on the first and third Monday of the month at 9am France time. We have also adjusted the power profile to more performance oriented one. Let us know if you have any future issues.

soredake · 2023-12-29T13:09:20Z

Unfortunately it seems that restarting server is not enough to fix this.

Et0h · 2023-12-29T13:22:55Z

The problem is therefore probably not with Syncplay but somewhere else on the route from your PC to the Syncplay public servers, e.g. your ISP. Your best option might be to run your own Syncplay server.

soredake · 2023-12-29T13:36:24Z

The problem is therefore probably not with Syncplay but somewhere else on the route from your PC to the Syncplay public servers, e.g. your ISP.

It happens to me and two of my friends, we all live in different countries. This also happens on another server https://syncplay.343.re/

Your best option might be to run your own Syncplay server.

I'll try this.

soredake · 2024-03-11T14:51:21Z

My self-hosted syncplay instance started giving similar (clean instead of non-clean) problems after a month without reboot, after rebooting frequent disconnects are stopped for now.

Someone7un7 added the bug / problem label Oct 8, 2022

This was referenced Nov 5, 2022

Always try plaintext if TLS attempt fails #564

Closed

Increase detail of connection errors #565

Merged

albertosottile changed the title ~~Connection~~ SSL connection abruptly cut in certain countries Dec 22, 2022

albertosottile added the Requires User Input label Dec 22, 2022

Et0h closed this as completed Jan 18, 2023

Et0h reopened this Apr 16, 2023

Et0h closed this as completed Sep 28, 2024

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

SSL connection abruptly cut in certain countries #553

SSL connection abruptly cut in certain countries #553

Someone7un7 commented Oct 8, 2022 •

edited

Loading

Et0h commented Oct 11, 2022 •

edited

Loading

Et0h commented Oct 11, 2022

Et0h commented Oct 12, 2022

Someone7un7 commented Oct 15, 2022

Et0h commented Oct 18, 2022

Someone7un7 commented Oct 19, 2022

Et0h commented Nov 5, 2022

Someone7un7 commented Dec 1, 2022

Et0h commented Dec 1, 2022 •

edited

Loading

daniel-123 commented Dec 1, 2022

Gieted commented Dec 3, 2022

Someone7un7 commented Dec 4, 2022 •

edited

Loading

Someone7un7 commented Dec 4, 2022 •

edited

Loading

albertosottile commented Dec 22, 2022

Someone7un7 commented Jan 1, 2023 •

edited

Loading

Someone7un7 commented Jan 14, 2023

Et0h commented Jan 18, 2023

Talkbullet commented Mar 17, 2023

Et0h commented Mar 17, 2023 •

edited

Loading

Talkbullet commented Mar 18, 2023 •

edited

Loading

Talkbullet commented Apr 7, 2023

Et0h commented Apr 16, 2023 •

edited

Loading

soredake commented Nov 3, 2023

Et0h commented Nov 4, 2023

soredake commented Nov 23, 2023

soredake commented Dec 28, 2023

Et0h commented Dec 28, 2023

soredake commented Dec 29, 2023

Et0h commented Dec 29, 2023 •

edited

Loading

soredake commented Dec 29, 2023 •

edited

Loading

soredake commented Mar 11, 2024

SSL connection abruptly cut in certain countries #553

SSL connection abruptly cut in certain countries #553

Comments

Someone7un7 commented Oct 8, 2022 • edited Loading

Et0h commented Oct 11, 2022 • edited Loading

Et0h commented Oct 11, 2022

Et0h commented Oct 12, 2022

Someone7un7 commented Oct 15, 2022

Et0h commented Oct 18, 2022

Someone7un7 commented Oct 19, 2022

Et0h commented Nov 5, 2022

Someone7un7 commented Dec 1, 2022

Et0h commented Dec 1, 2022 • edited Loading

daniel-123 commented Dec 1, 2022

Gieted commented Dec 3, 2022

Someone7un7 commented Dec 4, 2022 • edited Loading

Someone7un7 commented Dec 4, 2022 • edited Loading

albertosottile commented Dec 22, 2022

Someone7un7 commented Jan 1, 2023 • edited Loading

Someone7un7 commented Jan 14, 2023

Et0h commented Jan 18, 2023

Talkbullet commented Mar 17, 2023

Et0h commented Mar 17, 2023 • edited Loading

Talkbullet commented Mar 18, 2023 • edited Loading

Talkbullet commented Apr 7, 2023

Et0h commented Apr 16, 2023 • edited Loading

soredake commented Nov 3, 2023

Et0h commented Nov 4, 2023

soredake commented Nov 23, 2023

soredake commented Dec 28, 2023

Et0h commented Dec 28, 2023

soredake commented Dec 29, 2023

Et0h commented Dec 29, 2023 • edited Loading

soredake commented Dec 29, 2023 • edited Loading

soredake commented Mar 11, 2024

Someone7un7 commented Oct 8, 2022 •

edited

Loading

Et0h commented Oct 11, 2022 •

edited

Loading

Et0h commented Dec 1, 2022 •

edited

Loading

Someone7un7 commented Dec 4, 2022 •

edited

Loading

Someone7un7 commented Dec 4, 2022 •

edited

Loading

Someone7un7 commented Jan 1, 2023 •

edited

Loading

Et0h commented Mar 17, 2023 •

edited

Loading

Talkbullet commented Mar 18, 2023 •

edited

Loading

Et0h commented Apr 16, 2023 •

edited

Loading

Et0h commented Dec 29, 2023 •

edited

Loading

soredake commented Dec 29, 2023 •

edited

Loading