Recover unilateral deposit

[MatthiasLohr]

Hi,

maybe this is very close to #4, however, maybe there is already a solution for the following problem:

Imagine two players A, B to agree (off-chain) on using a state channel for their business. If I understood everything correct, there is no "channel registration" in the smart contract, just a deposit call with the according channel ID, which results from the channel parameters. Since everything looks fine, A now will do a deposit. After the deposit, B decides not to proceed the state channel operations and just leaves. Is there any way for A to recover his deposit? Both, register and concludeFinal require a mutually signed state - since there is no such state, there is no way for A to conclude the dispute and settle the state channel, right?

Best regards
Matthias

[matthiasgeihs]

Hi @MatthiasLohr ,

Our protocol requires that a client will only deposit after receiving a signature from all channel participants on the initial state (you can see that here in go-perun). Thus, in order to withdraw funds from a partially funded channel, you can use this initially signed state.

Our payout logic works like this: If the channel is underfunded, the payout will be done according to the deposits. Only if there is a enough funds available, the balances of the concluded state will be paid out.

[MatthiasLohr]

@matthiasgeihs,

thank you very much for the reply!

Our payout logic works like this: If the channel is underfunded, the payout will be done according to the deposits.

I feel blind... where can I find this logic in the Solidity contracts?

[matthiasgeihs]

@MatthiasLohr
This logic cannot be found in the contracts. It is part of the Perun protocols and described, for example, here: https://labs.hyperledger.org/perun-doc/concepts/protocols_phases.html. In order to use the contracts securely, you need to follow the protocol.