| Copyright | Alexander Krupenkin 2016 |
|---|---|
| License | BSD3 |
| Maintainer | mail@akru.me |
| Stability | experimental |
| Portability | unknown |
| Safe Haskell | None |
| Language | Haskell2010 |
Network.Ethereum.Web3
Contents
Description
An Ethereum node offers a RPC interface. This interface gives Ðapp’s access to the Ethereum blockchain and functionality that the node provides, such as compiling smart contract code. It uses a subset of the JSON-RPC 2.0 specification (no support for notifications or named parameters) as serialisation protocol and is available over HTTP and IPC (unix domain sockets on linux/OSX and named pipe’s on Windows).
Web3 Haskell library currently use JSON-RPC over HTTP to access node functionality.
- data Web3 a b
- class Provider a where
- data DefaultProvider
- data Web3Error
- forkWeb3 :: Web3 a () -> Web3 a ThreadId
- runWeb3' :: MonadIO m => Web3 a b -> m (Either Web3Error b)
- runWeb3 :: MonadIO m => Web3 DefaultProvider b -> m (Either Web3Error b)
- data EventAction
- class ABIEncoding a => Event a where
- class ABIEncoding a => Method a where
- data NoMethod = NoMethod
- nopay :: Wei
- newtype BytesN n = BytesN {}
- newtype BytesD = BytesD {}
- data Address
- module Network.Ethereum.Unit
Web3 monad and service provider
Any communication with Ethereum node wrapped with Web3 monad
Some peace of error response
Constructors
| JsonRpcFail !RpcError | JSON-RPC communication error |
| ParserFail !String | Error in parser state |
| UserFail !String | Common head for user errors |
runWeb3 :: MonadIO m => Web3 DefaultProvider b -> m (Either Web3Error b) Source #
Web3 runner for default provider
Contract actions
data EventAction Source #
Event callback control response
Constructors
| ContinueEvent | Continue to listen events |
| TerminateEvent | Terminate event listener |
Instances
class ABIEncoding a => Method a where Source #
Contract method caller
Methods
sendTx :: (Provider p, Unit b) => Address -> b -> a -> Web3 p TxHash Source #
Send a transaction for given contract Address, value and input data
call :: (Provider p, ABIEncoding b) => Address -> CallMode -> a -> Web3 p b Source #
Constant call given contract Address in mode and given input data
Dummy method for sending transaction without method call
Constructors
| NoMethod |
Ethereum data types
Fixed length byte array
Dynamic length byte array
Ethereum account address
Ethereum unit conversion utils
module Network.Ethereum.Unit