Execute Relay Call
Sequential relay calls in the same channel
When executing 3 sequential relay calls with sequential nonces in a single channel (= nonces from the KeyManager retrieved via getNonce, keep in mind that if the first transaction does revert, the next 2 will revert in turns. That happens because a Key Manager nonce is assigned to each relay call.
E.g.:
- First relay call - nonce is 4
- Second relay call - nonce is 5
- Third relay call - nonce is 6
One of the requirements for executing a relay call is that the latest nonce (for a specific signer) stored on-chain in the Key Manager contract must be the same as the one used when signing the executed relay call. After each successful execution, the on-chain nonce is incremented.
Given the example above, the on-chain nonce is 4 and we are executing the relay calls.
If the first relay call pass ✅
- First relay call: nonce was 4 -> incremented to 5
- Second relay call: nonce was 5 -> incremented to 6
- Third relay call: nonce was 6 -> incremented to 7
If the first relay call fails ❌
- First relay call reverts ❌ nonce was 4 -> nonce remains 4
- Second relay call: nonce on-chain is 4 -> nonce used to sign was 5 = reverts ❌ with
InvalidRelayNonce - Third relay call: nonce on-chain is 5 -> nonce used to sign was 6 = reverts ❌ with
InvalidRelayNonce