How to broadcast a vote/comment over JSONRPC?

in steemdev •  7 years ago 

I couldn't find a proper place to ask this, I'm trying to figure out how to vote/comment over jsonrpc.
As far as I found it could be done with broadcasting a transaction. Which I'm not familiar at all.
Could anyone give me a sample of it, "what are ref_block, ref_block_prefix, how to sign" :s
Any guidance, proper documentation, links to read appreciated.

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all client libraries do the transaction signing under the hood. You don't need to explicitly sign it. What did you tried so far?

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