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Gas Limits

Contract calls consume gas. Omni enforces a gas limit when executing an xcall. You can specify a gas limit when making an xcall.

xcall(
   destChainId,  // destination chain id
   to,           // contract address on the destination chain
   data,         // abi encoded calldata, ex abi.encodeWithSignature("foo()")
   gasLimit      // gas limit to enforce on destination execution
)

If you do not specify a gas limit, Omni enforces a default gas limit, currently set to 200_000. You can read the default gas limit via the portal contract.

/// @notice Default xmsg execution gas limit, enforced on destination chain
omni.XMSG_DEFAULT_GAS_LIMIT()

If you do not provide sufficient gas for an xcall, its execution will revert. It's important to set appropriate gas limits for each xcall. Determine gas limits with proper unit testing.