From d721503da6e9153f954715a7539da5fb230c3210 Mon Sep 17 00:00:00 2001
From: bruwbird <bruwbird@mercari.com>
Date: Thu, 27 Feb 2025 10:27:51 +0900
Subject: [PATCH] simulated: add WithHTTPRPCServer config

Introduce a new WithHTTPRPCServer function to configure
the simulated backend with host, port, and modules:
- Enable HTTP-based RPC access for local testing
- Simplify node setup for developers and testers
---
 ethclient/simulated/options.go | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/ethclient/simulated/options.go b/ethclient/simulated/options.go
index 40bcb37bd1..b6ef9565ac 100644
--- a/ethclient/simulated/options.go
+++ b/ethclient/simulated/options.go
@@ -53,3 +53,17 @@ func WithMinerMinTip(tip *big.Int) func(nodeConf *node.Config, ethConf *ethconfi
 		ethConf.Miner.GasPrice = tip
 	}
 }
+
+// WithHTTPRPCServer configures the simulated backend so that the node runs an HTTP server
+// on the specified host and port, and enables the specified HTTP modules.
+// Example usage:
+//
+//	NewBackend(alloc, WithHTTPRPCServer("localhost", 8545, []string{"eth", "net", "web3"}))
+func WithHTTPRPCServer(host string, port int,
+	modules []string) func(nodeConf *node.Config, ethConf *ethconfig.Config) {
+	return func(nodeConf *node.Config, ethConf *ethconfig.Config) {
+		nodeConf.HTTPHost = host
+		nodeConf.HTTPPort = port
+		nodeConf.HTTPModules = modules
+	}
+}