Improve error messages

[jorisbontje]

with develop 80592f2

creating trivial contract https://github.com/jorisbontje/sleth/blob/master/contracts/simple.se with hex code 336000556001600155604f8060146000396063567c01000000000000000000000000000000000000000000000000000000006000350463119fbbd48114156036576001600154016001555b63ea66cf6d811415604d5760015460405260206040f35b505b6000f3

via rpc:

{'params': [{'gas': '0xc350', 'from': '0x48574ed8323453c2c5deaebc69eb068c1cc516fa', 'data': '0x336000556001600155604f8060146000396063567c01000000000000000000000000000000000000000000000000000000006000350463119fbbd48114156036576001600154016001555b63ea66cf6d811415604d5760015460405260206040f35b505b6000f3', 'value': '0x0', 'gasPrice': '0x9184e72a000'}], 'jsonrpc': '2.0', 'id': '32f0bbc8-3068-4d29-b2b6-017bab3eca89', 'method': 'eth_sendTransaction'}

result:

{u'jsonrpc': u'2.0', u'id': u'32f0bbc8-3068-4d29-b2b6-017bab3eca89', u'result': u'0x0357af2a54e4ce1b2f7d151218a28bb6d22a4c2a'}

ethereum started with:

$ ethereum -mine=true -rpc=true -rpcport=8080 --unlock=48574ed8323453c2c5deaebc69eb068c1cc516fa:bla

now in the ethereum logs:

2015/03/13 12:16:21 [XETH] Contract addr 0357af2a54e4ce1b2f7d151218a28bb6d22a4c2a
2015/03/13 12:16:22 [MINER] Hash rate: 91 Khash
2015/03/13 12:16:24 [MINER] Hash rate: 92 Khash
2015/03/13 12:16:25 [CHAIN] processed block #1070 (7207c80e...)
2015/03/13 12:16:25 [MINER] committing new work with 1 txs
2015/03/13 12:16:25 [MINER] (re)started agent[0]. mining...
2015/03/13 12:16:26 [MINER] Hash rate: 84 Khash
2015/03/13 12:16:28 [MINER] Hash rate: 90 Khash
2015/03/13 12:16:30 [MINER] Hash rate: 91 Khash
2015/03/13 12:16:32 [MINER] Hash rate: 91 Khash
2015/03/13 12:16:33 [BLOCK] TX err: out of gas! require 20000, have 4033
2015/03/13 12:16:33 [CHAIN] processed block #1071 (76a59ed5...)
2015/03/13 12:16:33 [MINER] committing new work with 0 txs
2015/03/13 12:16:33 [MINER] (re)started agent[0]. mining...

Why would it run out of gas, since I am providing 0xc350 = 50000 gas upon creation?

Edit: turns out that this 'required' amount of 20000 doesn't apply to the complete TX, but a specific action part of it. The error message can be clarified to reflect this.

[obscuren]

Contracts are expensive. GasCreate for example is already 32000 gas, a GasStoreAdd is 20000.

[obscuren]

For a full list of gas (changes) see https://github.com/ethereum/go-ethereum/blob/develop/vm/common.go#L36

[jorisbontje]

Another error message that is unclear:

[MINER] GasLimit error. Max 500000, transaction would take it to 301246

[jorisbontje]

Also getting these errors a lot, which look problematic but might be harmless?
#448

[CHAIN] Block timestamp equal or less than previous block (1426247835 - 1426247835)

And #476 :

[MINER] Nonce err. Is 9, expected 7

[obscuren]

The time stamp issue is because the difficulty is very low for the current test net. It means you mined 2 blocks within a second (the protocol doesn't allow this).

Regarding the nonce error, i'll have a look in to that.

[obscuren]

• Nonce errors
• Gas Limit
• Tx removal errors
• Block validation errors
  • Prev time
  • Nonce errors
  • Uncle errors