ethClient missing required field 'v' for txdata

[oucye]

when I use ethClient to connect etc node with method BlockByNumber, I get an error "missing required field 'v' for txdata"
etc rpc api doesn't return the params "v", "r" and "s" , how to fix this

[whilei]

eth_getBlockByNumber returns for field transactions "Array of transaction objects, or 32 Bytes transaction hashes depending on the last given parameter".

• https://github.com/ethereumproject/go-ethereum/wiki/JSON-RPC#eth_getblockbyhash

And as documented here, https://github.com/ethereumproject/go-ethereum/wiki/JSON-RPC#eth_gettransactionbyhash, a "transaction object" doesn't contain a field v (or r or s), as you mentioned. This is for the Ethereum Classic implementation.

However, reading https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_gettransactionbyhash shows that ETH has apparently decided to modify the return value for transaction objects, including v, r, and s.

If I'm correct in thinking that your ethClient in question is from https://ethereum.org/cli -- then this is because you're using an ETH-maintained client in conjunction with an ETC RPC.

I'll begin working a PR to add these fields to transaction objects for this client. In the meantime, you can use https://github.com/ethoxy/multi-geth which should fully support the ETH interfaces for ethClient.