Add a default_gas setting to be used for submitting a tx when tx simulation fails

[romac]

Crate

ibc-relayer

Summary

Add a default_gas setting to be used for submitting a tx when tx simulation fails.

Problem Definition

Currently, when the tx simulation fails we fall back on the max_gas config param to compute the fee for the tx before actually submitting it. Because tx simulation can fail for many reasons, and this happens somewhat often, doing so can very quickly drain the wallets of operators with a high max_gas .

Proposal

Add a default_gas setting to be used instead of max_gas for submitting a tx when tx simulation fails.

The idea is that this default_gas setting would much lower than the max_gas and would be typically enough for submitting 95-99% of txs.

---

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate milestone (priority) applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned