Contract Invocation – Fixing sendTransaction Code Error: Too Many Arguments

contract-invocationjson-rpc

I have a contract that has a function:

function addRequest(uint256 d) {
    ...
}

After compile and deployment, I typed the command below to call it:

curl 192.168.241.128:8545 -X POST --data '{"jsonrpc":"2.0","method":"eth_sendTransaction","params":[{
                "from": "0x407d73d8a49eeb85d32cf465507dd71d507100c1",
                "to": "0x8bed67280f46cc1ffd401cdb3dd5909f254c8f34", 
                "data": "0x4ca1fad8000000000000000000000000000000000000000000000000000000000000022b"
            }, "latest"],"id":1}'

the first 4 byte of data is the first 4 byte result of web3.sha3('addRequest(uint256)'), and then the a uint32 value 555 padded to 32 bytes. I don't think it is wrong.But it shows me the result below:

{"jsonrpc":"2.0","id":1,"error":{"code":-32602,"message":"too many arguments, want at most 1"}}

I need a hand, so can anyone help me to solve the puzzle? thank you very much with all my heart.

Best Answer

The problem is that eth_sendTransaction only takes one argument, but you are providing two. You should not pass on the value "latest" since this is meaningless for this function. This should work:

curl 192.168.241.128:8545 -X POST --data '{"jsonrpc":"2.0","method":"eth_sendTransaction","params":[{ "from": "0x407d73d8a49eeb85d32cf465507dd71d507100c1", "to": "0x8bed67280f46cc1ffd401cdb3dd5909f254c8f34", "data": "0x4ca1fad8000000000000000000000000000000000000000000000000000000000000022b" }],"id":1}'

Related Solutions

[Ethereum] “code”:-32600,”message”:”Could not decode request”

I believe that your values should be encoded to json before passing to post data.

[Ethereum] Cannot access geth by JSON-RPC. It returns {“jsonrpc”:”2.0″,”error”:{“code”:-32600,”message”:”EOF”}}

I suspect it is the command you are using.

This works:

user@Kumquat:~$ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}' http://localhost:8545
{"jsonrpc":"2.0","id":1,"result":{"currentBlock":"0x1eb260","highestBlock":"0x1eb478","knownStates":"0x0","pulledStates":"0x0","startingBlock":"0x1eaea3"}}

And this does not work:

user@Kumquat:~$ curl '{"jsonrpc":"2.0","method":"eth_syncing","params":[],"id":1}' http://localhost:8545
curl: (3) [globbing] nested brace in column 50
{"jsonrpc":"2.0","error":{"code":-32600,"message":"EOF"}}

Here are some simple commands you can test with:

user@Kumquat:~$ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_coinbase","params":[],"id":1}' http://localhost:8545
{"jsonrpc":"2.0","id":1,"result":"0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}

user@Kumquat:~$ curl -X POST --data '{"jsonrpc":"2.0","method":"eth_gasPrice","params":[],"id":1}' http://localhost:8545
{"jsonrpc":"2.0","id":1,"result":"0x4a817c800"}

Best Answer

Related Solutions

[Ethereum] “code”:-32600,”message”:”Could not decode request”

[Ethereum] Cannot access geth by JSON-RPC. It returns {“jsonrpc”:”2.0″,”error”:{“code”:-32600,”message”:”EOF”}}

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