https://github.com/neonevm/proxy-model.py

Neon Proxy for Solana
https://github.com/neonevm/proxy-model.py

evm solana

Last synced: 3 days ago
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Neon Proxy for Solana

• Host: GitHub
• URL: https://github.com/neonevm/proxy-model.py
• Owner: neonevm
• License: other
• Created: 2020-10-02T12:01:57.000Z (over 4 years ago)
• Default Branch: develop
• Last Pushed: 2023-12-06T09:14:14.000Z (about 1 year ago)
• Last Synced: 2023-12-06T14:29:39.739Z (about 1 year ago)
• Topics: evm, solana
• Language: Python
• Homepage: https://neon-labs.org
• Size: 5.55 MB
• Stars: 14
• Watchers: 4
• Forks: 17
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE
  • Code of conduct: CODE_OF_CONDUCT.md
  • Audit: audit/20221013-Halborn.pdf

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README

        
# Python prototype for Solana MetaMask proxy

Built on https://github.com/abhinavsingh/proxy.py.git

Requirements (for Ubuntu 18.04):

- python3

- python3-venv

- python3-dev

- gcc

To run internal implementation for Ethereum tokens, start the proxy with:

```bash

python3 -m venv venv

source venv/bin/activate

pip install -r requirements.txt

python3 -m proxy --hostname 127.0.0.1 --port 9090 --enable-web-server --plugins proxy.plugin.NeonRpcApiPlugin --num-workers=1

```

Then add network `http://localhost:9090/solana` into MetaMask

The repository contains sources for several services with similar logic:

- proxy

- indexer

- gas-tank

GasTank is a service that analyzes transactions with NeonEVM instructions and looks for liquidity transfers into Neon accounts. The service provides users that make such transfers with gas-less transactions.

The service is configured via environment variables. Further to the common proxy environment, the service accepts the following variables:

- FAUCET_URL

 > URL to the faucet service for distributing NEON tokens to the users

- INDEXER_ERC20_WRAPPER_WHITELIST

 > A comma-separated list of ERC20ForSpl wrapped tokens for transfer (those transactions which trigger the service to allow gas-less transactions). The gas-tank looks for the first transfers of such tokens from Solana to Neon (those transfers that lead to the creation of Neon accounts).

- PORTAL_BRIDGE_CONTRACTS

 > A comma-separated list of Portal Bridge contracts.

- PORTAL_BRIDGE_TOKENS_WHITELIST

  > An allow list of tokens for the transfer which will trigger the providing of gas-less transactions. This set should contain "tokenChain:tokenAddress", where:

  > - `tokenChain` is an original token chain number in terms of Portal bridge numbers

  > - `tokenAddress` is the address of the token in hexadecimal lowercase form with a '0x' prefix

  >

  > Alt: provide the ANY value to accept any token.

- ERC20_BRIDGE_CONTRACTS

> A comma-separated list of Common ERC20 Bridge contracts.

- ERC20_BRIDGE_TOKENS_WHITELIST

> An allowlist of tokens whose transfer triggers the providing of gas-less transactions. This set should contain ERC20 addresses separated by a comma. Alt: provide the ANY value to accept any token.

## Gotchas

- PORTAL_BRIDGE_CONTRACTS & PORTAL_BRIDGE_TOKENS_WHITELIST should both be specified. If either is missed, the gas-tank doesn't analyze Portal Bridge transfers.

- ERC20_BRIDGE_CONTRACTS & ERC20_BRIDGE_TOKENS_WHITELIST should both be specified. If they are missed, the gas-tank doesn't analyze Common ERC20 Transfers.