How to determine the software version of an RPC node?

Question

If I connect to a remote RPC node, is there a request to determine what release of Monero it is running?

For example, I might prefer an RPC node running v15.0.0 including the recent side channel mitigation.

I have already looked at https://web.getmonero.org/resources/developer-guides/ but I cant seem to find a request that gives me this information.

jtgrassie · Accepted Answer · 2019-11-29 15:22:26Z

0

So long as the node is not running with the restricted RPC (i.e. --restricted-rpc), you can check its version by calling get_info. E.g.

curl http://127.0.0.1:18081/json_rpc -d '{"jsonrpc":"2.0","id":"0","method":"get_info"}'

The result object has a version field like: "version": "0.15.0.1-release"

answered Nov 29 '19 at 8:57

jtgrassie♦

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Actually, I tried this already, but it does not work for all nodes. Maybe, I should specify that I am interested mainly in public remote nodes. If you try curl -X POST http://node.moneroworld.com:18089/get_info you will see that sometimes you get an output as you quote, but mostly you get "version": "" – PyrolitePancake Nov 29 '19 at 9:26
I am really confused why there is this difference in response?? – PyrolitePancake Nov 29 '19 at 9:28
I should have added that only nodes run without --restricticted-rpc will show this. – jtgrassie♦ Nov 29 '19 at 15:15
If you are using a third party's node, its exact version is none of your business. This information is withheld to diminish fingerprinting possibilities (though there's probably a lot that can be used still). Morever, if the node isn't yours, it could well lie. Last, the side channel fixes are wallet side. – user36303 Nov 30 '19 at 23:33
This is true. Here is obviously not the right place for a discussion on it, but, I think we may want to include a major version number that's not restricted. All nodes are expected to be on the same consensus so off the top of my head I don't think it's a privacy issue (especially for public remote nodes). Anyway, yes, wrong place for this discussion! – jtgrassie♦ Dec 1 '19 at 0:42

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