Failed to connect Sparrow wallet to bitcoin knots via Private Server

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Hi Paul!

I was reading the post where you helped Jacken on how to run his DIY Start9 server, that was great!!

I have a similar question on how to connect Sparrow to Knots via Private Electrum.

From sparrow I can connect to Knots using Public Server or Core Server but I am wondering about the Private Server Tab which gives me a ‘‘retries exhausted’’ error in Sparrow when trying to connect.

I am just curious not much people seems to mention about that path.(maybe I haven’t searched enough?)

From what I found to connect to Private Server I need something like EPS.
Now I am getting blocked when launching the app with error on the config_file: ''The following arguments are required: config_file
And from their config notepad I tried something but still get blocked.

Screenshot (7)
Screenshot (7)1920×1080 167 KB

I am trying to find the cheapest way but I would probably end up doing my own start9 as Desktop is slow to synchronize new blocks at every launch anyway.

PS I found someone doing it on youtube with Linux and he seems to keep the config_file format the way Electrum gave it. Check 5mins12sec bottom right screen.

Video: 18. Electrum Personal Server (v0.1.5)

My question is, have you been down that path? And would it be worth it/reliable?
Any advice much appreciated, and than you for your work!

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The easiest way to run a private electrum server on Start9 is the “electrs” service (stands for “Electrum Rust Server” – it is an implementation of EPS written in Rust – found in the main Start9 Registry). Once it is installed on your server, keep the default config options and start it. It will take a few hours on the first run to build the index.

Once electrs is finished syncing, you can connect Sparrow to it using the values under the Proerties section (Host and Port – paste those values into the fields next to “URL:” in the Private Electrum tab in Sparrow).

BTW if you want to run EPS on your PC instead of using electrs on your server, it is possible, but connecting to the Knots RPC will require setting up SimpleProxy. This is because StartOS 0.3.5.1 support for clearnet is very poor (supposed to be greatly improved in the upcoming 0.4.x release). I can help you with that route if you want, but IMO it doesn’t buy you anything that you wouldn’t get from using electrs (other than the learning experience).