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README.md

Xtokens Module

Overview

The xtokens module provides cross-chain token transfer functionality, by cross-consensus messages(XCM).

The xtokens module provides functions for

  • Token transfer from parachains to relay chain.
  • Token transfer between parachains, including relay chain tokens like DOT, KSM, and parachain tokens like ACA, aUSD.

Notes

Integration tests

Integration tests could be done manually after integrating xtokens into runtime. To cover the full features, set up at least 4 relay chain validators and 3 collators of different parachains, and use dispatchable calls to include all these scenarios:

  • Transfer relay chain tokens to relay chain.
  • Transfer tokens issued by parachain A, from parachain A to parachain B.
    • Sending the tx from parachain A.
    • Set the destination as Parachain B.
    • Set the currency ID as parachain A token.
  • Transfer tokens issued by parachain B, from parachain A to parachain B.
    • Sending the tx from parachain A.
    • Set the destination as Parachain B.
    • Set the currency ID as parachain B token.
  • Transfer tokens issued by parachain C, from parachain A to parachain B.
    • Sending the tx from parachain A.
    • Set the destination as Parachain B.
    • Set the currency ID as parachain C token.