Send2cgeo server is very slow

[Lineflyer]

@mucek4 While testing the new send2cgeo release 2025.08.17 I noticed that the server side is reacting very slow. This means:

• Requested the PIN from c:geo takes up to 20 seconds
• Registering the device takes up to 30 seconds
• Sending caches takes up to 40 seconds from requesting the download until the download is triggerd in c:geo

The same problem was already noted in https://github.com/cgeo/send2cgeo/issues/144#issuecomment-2341167990 in September 2024

[mucek4]

I have tried to register mine and I don't see any slow calls. Could it be IPv6 problem?

[Lineflyer]

Could be, I was on v6 for sure. Will check the log and try v4.

[Lineflyer]

I have v6 available and used everywhere (home and both mobile operators available) and don't know how to enforce v4.

That's what I get from the c:geo log:

It a 200 response after a bit more than 30 seconds. This makes me guess, that there might be a timeout on v6 and fallback request on v4 after 30s?! Could that be?

[Lineflyer]

@mucek4 Ping 6 is not a problem at least, so maybe on protocol level (port not on v6)?

[Lineflyer]

@mucek4 I repeated the test today. Now caches "sent" from the website are immediately loaded in c:geo. IPv6 was available and thus potentially in use. Can you confirm you changed something on server side? Seems fixed at least.