fix(pumpswap): validate virtual reserve quotes

2026-07-17 02:15:20 +08:00
parent dd41dd4f87
commit fb1ff176d0
13 changed files with 914 additions and 111 deletions
@@ -21,7 +21,7 @@ cargo run --release --package pumpswap_trading

 - The buy uses `BuyAmount::WithMaxInput`, which applies slippage to maximum quote cost and is appropriate when fill priority matters.
 - Buy parameters use post-trade reserves and LP/protocol/creator fee bps from the event.
- `solana-streamer-sdk 0.5.0` predates the appended `virtual_quote_reserves` event field, so this compatibility example reads that Pool field once before quoting. When the parser exposes the field, pass it directly to `PumpSwapParams::from_trade_with_fee_basis_points` or keep it in a Pool account cache to remove this RPC from the hot path.
+- The event's raw and virtual quote reserves come from the same transaction snapshot. The hot path does not fetch the Pool account, avoiding both added latency and mixed-slot quotes.
 - The example records the pre-buy balance and sells only the confirmed balance increase. It refreshes pool state and blockhash before selling.
 - Use `BuyAmount::ExactInput` when the quote spend must be exact. That mode protects minimum output and can fail more often in an active pool.