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Assuming the following scenario where a miner has 15% of all hashing power and the ability to exert a moderate control over the network to the point where if the attacker sees a message A, it can't stop A from propagating, but what it **can** do is send a message B and ensure that most nodes see B before A. The attacker can then selfish mine and augment selfish mining strategy by giving his own blocks an advantage. This change makes the time at which a block is received less relevant and so the level of control an attacker has over the network no longer makes a difference. This change changes the current td algorithm `B_td > C_td` to the new algorithm `B_td > C_td || B_td == C_td && rnd < 0.5`.
Ethereum Go
Official golang implementation of the Ethereum protocol
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Automated development builds
The following builds are build automatically by our build servers after each push to the develop branch.
Building the source
For prerequisites and detailed build instructions please read the Installation Instructions on the wiki.
Building geth requires both a Go and a C compiler. You can install them using your favourite package manager. Once the dependencies are installed, run
make geth
Executables
Go Ethereum comes with several wrappers/executables found in
the cmd directory:
| Command | |
|---|---|
geth |
Ethereum CLI (ethereum command line interface client) |
bootnode |
runs a bootstrap node for the Discovery Protocol |
ethtest |
test tool which runs with the tests suite: /path/to/test.json > ethtest --test BlockTests --stdin. |
evm |
is a generic Ethereum Virtual Machine: evm -code 60ff60ff -gas 10000 -price 0 -dump. See -h for a detailed description. |
disasm |
disassembles EVM code: `echo "6001" |
rlpdump |
prints RLP structures |
Command line options
geth can be configured via command line options, environment variables and config files.
To get the options available:
geth help
For further details on options, see the wiki
Contribution
If you'd like to contribute to go-ethereum please fork, fix, commit and
send a pull request. Commits who do not comply with the coding standards
are ignored (use gofmt!). If you send pull requests make absolute sure that you
commit on the develop branch and that you do not merge to master.
Commits that are directly based on master are simply ignored.
See Developers' Guide for more details on configuring your environment, testing, and dependency management.