doc: Add I2P guidance related to bandwidth and i2pd software version #25993

The doc already discusses i2pd versions in lines 17-20; perhaps drop this entire section and update the minimum version there? What platform are you using? I'm still using i2pd version 2.40.0 on debian testing without issues (will upgrade to 2.43 to test). Meta: maybe we could drop the minimum recommended version once a sufficiently recent version is in package managers.

Is this different with i2prouter (I2P Router), the official implementation in Java? It may be more helpful to discuss bandwith in general for both.

settings enabled. Check your router's configuration to limit the amount of this

`transittunnels` options in the `i2pd/contrib/i2pd.conf` file. For example, to limit total I2P traffic to 256KB/s

Will test some of your recommendations, thanks!

👍🏼 I did test that disabling the transit traffic still permitted connections to and from the SAM proxy, and it worked between my two nodes. I also double checked on libera-chat#i2pd-dev that this is intended behaviour, and it is. So if you want only bitcoin traffic on your I2P proxy, you can disable everything else for ultimate minimum bandwidth-usage!

I think I might leave out the conf file path: 1) It might be in different locations for different people (e.g. /etc/i2pd/i2pd.conf or /var/lib/i2pd/i2pd.conf etc.) and 2) people might just be running with command line args.

Suggestions

 ## Bandwidth
 
-I2P routers may route a large amount of general network traffic with default
-settings enabled. Check your router's configuration to limit the amount of this
-traffic that is being relayed.
-
-For `i2pd` controlling the amount of bandwidth being shared with the wider
-network can be achieved by modifying the `bandwidth`, `share` and
-`transittunnels` options. For example to limit total I2P traffic to 256KB/s,
-and share 50% of this limit for a maximum of 20 transit tunnels you can use:
+I2P routers may route a large amount of general network traffic with their
+default settings. Check your router's configuration to limit the amount of
+traffic relayed, if desired.
+
+With `i2pd`, the amount of bandwidth shared with the wider network can be
+adjusted with the `bandwidth`, `share` and `transittunnels` options in
+`i2pd.conf`. For example, to limit I2P traffic to 256KB/s and share 50% of this
+limit for a maximum of 20 transit tunnels:

I think I might leave out the conf file path: 1) It might be in different locations for different people (e.g. /etc/i2pd/i2pd.conf or /var/lib/i2pd/i2pd.conf etc.) and 2) people might just be running with command line args.

Agree WRT the path. Maybe give the conf filename for both i2pd and i2p router or for neither.

I believe this is addressed here in response to vasild's comment.

I believe this is addressed here in response to vasild's comment.

How?

Mind having a look at #25993 (review)? It would fix a few punctuation/grammar issues and improve clarity/brevity.

Ok I have adopted the changes from #25993 (review)

How?

As the final clause now reads:

Similar bandwidth configuration options in the Java I2P router can be found in
the `http://127.0.0.1:7657/config`, under the "Bandwidth" tab.

Which I think, is roughly the equivalent of the i2p router conf file?

Would it be clearer if this:

For example to limit total I2P traffic to 256KB/s, and permit 50% of this limit for a maximum of 20 transit tunnels you can use:

it tweaked to:

For example to limit total I2P traffic to 256KB/s, and share 50% of this limit with a maximum of 20 transit tunnels you can use:

?

Feel free to add some text for the java i2p router:

The bandwidth configuration in the Java I2P router can be found in the http://127.0.0.1:7657/config, under the "Bandwidth" tab.

I think remove "Some" - because this is not specific to i2pd.

example, to limit total I2P traffic to 256KB/s and share 50% of this limit for

`http://127.0.0.1:7657/config`, under the "Bandwidth" tab.

As this says where to find the i2prouter options, it would make sense to also do so for i2pd, i.e. in the i2pd.conf file

Ignore unless you need to retouch: dropping the backticks could make this a clickable URL.

http://127.0.0.1:7657/config under the "Bandwidth" tab.

Thanks @jonatack

Will indeed amend if I retouch.