At openethereum node doesn't work

[jiazechen]

I find uniswap does not work at openethereum.

because jsonrpc api request params omit "jsonrpc": "2.0".

---

request:

{"method":"eth_call","params":[{"to":"0xeefba1e63905ef1d7acba5a8513c70307c1ce441","data":"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"},"latest"],"id":"335553604008694074530677"}

response: error

{
"error": {
"code": -32600,
"message": "Unsupported JSON-RPC protocol version"
},
"id": "335553604008694074530677"
}

---

request:
{"jsonrpc":"2.0","method":"eth_call","params":[{"to":"0xeefba1e63905ef1d7acba5a8513c70307c1ce441","data":"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"},"latest"],"id":"335553604008694074530677"}

reponse: ok

{
"jsonrpc": "2.0",
"result": "0x0000000000000000000000000000000000000000000000000000000000a5e79e00000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000004000000000000000000000000000000000000000000000000000000000000000800000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000000",
"id": "335553604008694074530677"
}

[ghost]

This is node issue, not the uniswap issue.