BRIDGING Operations

Operations → External Call Operations → Bridge Operations (Call Forwarder)

Execute cross-chain bridge operations through supported bridge protocols.

Supported Bridges

BridgeIds Enum

Parameters

Encoding Example

bytes memory bridgeOp = abi.encodePacked(
    uint8(ComposerCommands.BRIDGING),
    uint8(BridgeIds.STARGATE_V2),
    // Stargate V2 specific parameters...
);

Usage Context

Important: Bridge operations can only be executed through the Call Forwarder and require a two-layer calling structure:

Example

// 1. Create the bridge operation for Call Forwarder
bytes memory bridgeOp = abi.encodePacked(
    uint8(ComposerCommands.BRIDGING),
    uint8(BridgeIds.STARGATE_V2),
    // ... bridge parameters
);

// 2. Wrap in EXT_CALL to Call Forwarder
bytes memory fullCall = abi.encodePacked(
    uint8(ComposerCommands.EXT_CALL),
    address(callForwarder),      // Call Forwarder address
    uint128(0),                  // No native value for Call Forwarder
    uint16(bridgeOp.length),     // Bridge operation length
    bridgeOp                     // Bridge operation data
);

// 3. Execute on main composer
composer.deltaCompose(fullCall);