offline-election block in get_candidates and then loop print ws closed error

[yrong]

run this command

run --package offline-election --bin offline-election -- --uri wss://cc1.darwinia.network --network darwinia staking

and blocked here for 10 secs and then loop print error as following

[2020-12-03T08:53:48Z ERROR] Client Error: Inner(Ws(Closed))
[2020-12-03T08:53:48Z ERROR] Client Error: Inner(Ws(Closed))
....

[yrong]

notice issue and seems similar

@AurevoirXavier @hackfisher

will this hack work?

darwinia-network/bridger@d70d76c

[acgxv]

Yes, works. But that hack kind dirty & ugly.

[yrong]

@AurevoirXavier
notice that this lib use state_getPairs to get all validators

substrate-debug-kit/offline-election/src/subcommands/staking.rs

Line 37 in 22f804b

storage::enumerate_map::<AccountId, ValidatorPrefs>(MODULE, b"Validators", client, at)

and take too long to timeout, will it better to use state_getKeysPaged instead?