fix(rpc): bind default json-rpc listen address to localhost (evmos#1613) (#224)

* update nix

* bind default json-rpc to 127.0.0.1

* add change doc

* Update CHANGELOG.md

Co-authored-by: Federico Kunze Küllmer <31522760+fedekunze@users.noreply.github.com>

Author: mmsqe

CHANGELOG.md

@@ -45,6 +45,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 ### Bug Fixes
 
 * (rpc) [#1611](https://github.com/evmos/ethermint/pull/1611) Add missing next fee in fee history, fix wrong oldestBlock and align earliest input as ethereum.
+* (rpc) [#1613](https://github.com/evmos/ethermint/pull/1613) Change the default json-rpc listen address to localhost.
 * (rpc) [#1688](https://github.com/evmos/ethermint/pull/1688) Align filter rule for `debug_traceBlockByNumber`
 
 ### Improvements

scripts/contract-test.sh

@@ -35,7 +35,7 @@ cat $HOME/.ethermint/config/genesis.json | jq '.app_state["mint"]["params"]["min
 "$PWD"/build/ethermintd validate-genesis
 
 # Start the node (remove the --pruning=nothing flag if historical queries are not needed) in background and log to file
-"$PWD"/build/ethermintd start --pruning=nothing --rpc.unsafe --json-rpc.address="0.0.0.0:8545" --keyring-backend test > ethermintd.log 2>&1 &
+"$PWD"/build/ethermintd start --pruning=nothing --rpc.unsafe --json-rpc.address="127.0.0.1:8545" --keyring-backend test > ethermintd.log 2>&1 &
 
 # Give ethermintd node enough time to launch
 sleep 5

scripts/ethermint-devnet.yaml

@@ -7,8 +7,8 @@ ethermint_9000-1:
     index-events:
       - ethereum_tx.ethereumTxHash
     json-rpc:
-      address: "0.0.0.0:{EVMRPC_PORT}"
-      ws-address: "0.0.0.0:{EVMRPC_PORT_WS}"
+      address: "127.0.0.1:{EVMRPC_PORT}"
+      ws-address: "127.0.0.1:{EVMRPC_PORT_WS}"
       api: "eth,net,web3,debug"
   validators:
     - coins: 1000000000000000000stake,10000000000000000000000aphoton

scripts/integration-test-all.sh

@@ -16,7 +16,7 @@ REMOVE_DATA_DIR=false
 RPC_PORT="854"
 # Ethereum JSONRPC Websocket
 WS_PORT="855"
-IP_ADDR="0.0.0.0"
+IP_ADDR="127.0.0.1"
 
 KEY="mykey"
 CHAINID="ethermint_9000-1"

scripts/start.sh

@@ -11,7 +11,7 @@ TEST_QTD=1
 
 #PORT AND RPC_PORT 3 initial digits, to be concat with a suffix later when node is initialized
 RPC_PORT="854"
-IP_ADDR="0.0.0.0"
+IP_ADDR="127.0.0.1"
 MODE="rpc"
 
 KEY="mykey"

server/config/config.go

@@ -20,13 +20,13 @@ const (
 	DefaultGRPCAddress = "0.0.0.0:9900"
 
 	// DefaultJSONRPCAddress is the default address the JSON-RPC server binds to.
-	DefaultJSONRPCAddress = "0.0.0.0:8545"
+	DefaultJSONRPCAddress = "127.0.0.1:8545"
 
 	// DefaultJSONRPCWsAddress is the default address the JSON-RPC WebSocket server binds to.
-	DefaultJSONRPCWsAddress = "0.0.0.0:8546"
+	DefaultJSONRPCWsAddress = "127.0.0.1:8546"
 
 	// DefaultJsonRPCMetricsAddress is the default address the JSON-RPC Metrics server binds to.
-	DefaultJSONRPCMetricsAddress = "0.0.0.0:6065"
+	DefaultJSONRPCMetricsAddress = "127.0.0.1:6065"
 
 	// DefaultEVMTracer is the default vm.Tracer type
 	DefaultEVMTracer = ""

tests/integration_tests/configs/default.jsonnet

@@ -13,8 +13,8 @@
       'minimum-gas-prices': '0aphoton',
       'index-events': ['ethereum_tx.ethereumTxHash'],
       'json-rpc': {
-        address: '0.0.0.0:{EVMRPC_PORT}',
-        'ws-address': '0.0.0.0:{EVMRPC_PORT_WS}',
+        address: '127.0.0.1:{EVMRPC_PORT}',
+        'ws-address': '127.0.0.1:{EVMRPC_PORT_WS}',
         api: 'eth,net,web3,debug',
         'feehistory-cap': 100,
         'block-range-cap': 10000,

testutil/network/network.go

@@ -317,7 +317,7 @@ func New(l Logger, baseDir string, cfg Config) (*Network, error) {
 				if err != nil {
 					return nil, err
 				}
-				appCfg.JSONRPC.Address = fmt.Sprintf("0.0.0.0:%s", jsonRPCPort)
+				appCfg.JSONRPC.Address = fmt.Sprintf("127.0.0.1:%s", jsonRPCPort)
 			}
 			appCfg.JSONRPC.Enable = true
 			appCfg.JSONRPC.API = config.GetAPINamespaces()