From 14fe03cbfecf508848bcd1172ea8d2ee3e41fda4 Mon Sep 17 00:00:00 2001
From: Tyler Smith <tylersmith.me@gmail.com>
Date: Thu, 30 Jul 2020 22:00:38 -0700
Subject: TWEAK: Set minimum gas price.

---
 plugin/evm/block.go | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'plugin/evm/block.go')

diff --git a/plugin/evm/block.go b/plugin/evm/block.go
index 449e261..1a2bf9e 100644
--- a/plugin/evm/block.go
+++ b/plugin/evm/block.go
@@ -61,6 +61,15 @@ func (b *Block) Parent() snowman.Block {
 
 // Verify implements the snowman.Block interface
 func (b *Block) Verify() error {
+	// Ensure the minimum gas price is paid for every transaction
+	for _, tx := range b.ethBlock.Transactions() {
+		if tx.GasPrice().Cmp(minGasPrice) < 0 {
+			return errInvalidBlock
+		}
+	}
+
+	// Attempt to add the block to the chain and consider the block valid iff it's
+	// accepted
 	_, err := b.vm.chain.InsertChain([]*types.Block{b.ethBlock})
 	return err
 }
-- 
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