42 lines
1.5 KiB
Rust
42 lines
1.5 KiB
Rust
//! Networks are used inside wallets and providers to ensure replay protection across networks,
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//! as well as to allow functions to be called with ENS names instead of Addresses.
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use ethers_core::types::{Address, H160, U64};
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/// Trait for specifying network specific metadata, such as the Chain Id or the ENS
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/// address.
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pub trait Network {
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/// The network's Chain Id. If None, then EIP-155 is not used and as a result
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/// transactions **will not have replay protection**
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const CHAIN_ID: Option<U64>;
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/// The network's ENS address.
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const ENS_ADDRESS: Option<Address>;
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// TODO: Default providers? e.g. `mainnet.infura.io/XXX`?
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}
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/// Ethereum Mainnet, pre-specified ENS address and ChainID = 1 (for EIP-155)
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#[derive(Copy, Clone, Debug, PartialEq, Eq)]
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pub struct Mainnet;
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impl Network for Mainnet {
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const CHAIN_ID: Option<U64> = Some(U64([1]));
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// 0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e
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const ENS_ADDRESS: Option<Address> = Some(H160([
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// cannot set type aliases as constructors
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0, 0, 0, 0, 0, 12, 46, 7, 78, 198, 154, 13, 251, 41, 151, 186, 108, 125, 46, 30,
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]));
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}
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/// Any other network, ChainID is not specified so **there is no replay protection when
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/// using this network type**. ENS is also not specified, so any calls to the provider's
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/// `lookup_address` and `resolve_name` _will fail_.
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#[derive(Copy, Clone, Debug, PartialEq, Eq)]
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pub struct Any;
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impl Network for Any {
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const CHAIN_ID: Option<U64> = None;
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const ENS_ADDRESS: Option<Address> = None;
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}
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