cast send: add --bump-fee flag that resends with iteratively increasing gas price

[Thegaram]

Component

Cast

Describe the feature you would like

I'm using cast send extensively in some scripts. Sometimes they fail with replacement transaction underpriced. I suggest having a flag that allows bumping the gas price automatically so that the script can replace the stuck transaction.

• Option A: --bump-fee. If the transaction encounters the above error, we try resending it with iteratively increasing gas price (e.g. +10%) until we succeed.
• Option B: --bump-fee <MAX_GAS_PRICE>. Same as above but provide an upper limit.

I can take a go at implementing this if you think this would be a useful feature.

Additional context

No response

[mattsse]

we have --gas-estimate-multiplier in script which we can easily integrate here as well

[karpa4o4]

@mattsse, I would like to pick this up. Could you give me some advice on how to solve this issue?

[hackermayor1]

@mattsse @Thegaram
I would like to pick this up!

Just some pointers I thought about before starting this:

1. Where do we store the fee (maxGas) in storage, so we can iteratively bump next time?
2. How do we reset fee after bumping? This is what I am proposing:
   1. If any send call succeeds, we reset the state
   2. Else, we continuously increment if the bump-fee flag is passed

[Evalir]

Just a note @hackermayor1 — #4874 will add some changes to cast send that might affect your PR.

[andyrobert3]

@Evalir any thoughts from the questions raised by @hackermayor1

I would like to pick this up!

Just some pointers I thought about before starting this:

Where do we store the fee (maxGas) in storage, so we can iteratively bump next time?
How do we reset fee after bumping? This is what I am proposing:
If any send call succeeds, we reset the state
Else, we continuously increment if the bump-fee flag is passed

[zerosnacks]

Closing in favor of #1803

[Thegaram]

Hi @zerosnacks, these two seems to be different features. #1803 is a static, one-time multiplier, while this issue requests a way to automatically resend a transaction with a higher gas price.

[leovct]

I'm interested!

[zerosnacks]

I'm interested!

Assigned!

Related: #9067, this is a static multiplier for gas price for forge script / forge test whereas this ticket proposes an iteratively bumping up to a limit in cast

I think the ability to specify a max limit as proposed is important for safety / control

[leovct]

I'm interested!

Assigned!

Related: #9067, this is a static multiplier for gas price for forge script / forge test whereas this ticket proposes an iteratively bumping up to a limit in cast

I think the ability to specify a max limit as proposed is important for safety / control

I agree, we should implement safeguards. I was thinking of the following:

• Gas price limit (by default, could be set to 150% or 200% of the initial gas price)
• Maximum number of bumps (default: 5) or set a timeout (default: 1 min for example)
• Configurable bump increase (default: 10%)