fix: limit concurrent funding tasks and handle "already known" gracefully#451
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zeroXbrock merged 7 commits intoflashbots:mainfrom Feb 13, 2026
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…ully fund_accounts() spawned all funding tasks concurrently with no limit, overwhelming the RPC with connections (201 simultaneous requests). Additionally, "already known" errors (from txs still in the mempool from a previous run) were treated as fatal. Now they log a warning and continue, since the tx is already pending and will be mined. Changes: - add semaphore (25 concurrent tasks) to fund_accounts - handle "already known" RPC error as a warning, not a fatal error - replace expect() with graceful handling on channel send
Brock/sc/fix funding concurrency
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Summary
fund_accounts()spawned all funding tasks concurrently with no limit, overwhelming the RPC with connections (e.g. 201 simultaneous requests with-a 125)Fixes:
FUNDING_CONCURRENCY_LIMIT = 25) to cap concurrent funding tasksexpect()with graceful handling on channel sendTest plan
cargo check -p contender_clicompiles cleanlycargo test -p contender_cli— 38 passed (1 pre-existing failure unrelated to this change)-a 125(201 accounts)