Listen to a specific port

Author: vrde

cli.js

@@ -10,12 +10,13 @@ const packageJson = require("./package.json");
 function getOptions(program) {
   return {
     workdir: program.workdir || fs.mkdtempSync(`${os.tmpdir()}${sep}`),
+    port: program.port,
     download: program.download,
     logging: program.logging,
     allocate: program.allocate,
     chainId: program.chainid,
     execute: program.execute,
-    nodeArguments: program.nodeArguments
+    nodeArguments: program.nodeArguments,
   };
 }
 
@@ -31,6 +32,12 @@ program
   .version(packageJson.version)
   .option("-d, --download", "Download the Ethereum client and exit.")
   .option("-w, --workdir <dir>", "Specify a working dir.")
+  .option(
+    "-p, --port <port>",
+    "Specify the JSONRPC port.",
+    (v) => parseInt(v, 10),
+    8545
+  )
   .option("-l, --logging <level>", "Specify logging level (error, warn, info).")
   .option(
     "-c, --chainid <int>",

main.js

@@ -158,7 +158,16 @@ async function provide(
 
 async function run(
   client,
-  { download, workdir, logging, allocate, chainId, execute, nodeArguments }
+  {
+    download,
+    workdir,
+    port,
+    logging,
+    allocate,
+    chainId,
+    execute,
+    nodeArguments,
+  }
 ) {
   const loggingOptions = logging
     ? client === "geth"
@@ -208,16 +217,16 @@ async function run(
       "30311",
       "--http",
       "--http.addr",
-      "localhost",
+      "0.0.0.0",
       "--http.port",
-      "8545",
+      port,
       "--http.api",
       "personal,eth,net,web3,txpool,miner,debug",
       "--http.corsdomain",
       "*",
       "--ws",
       "--ws.addr",
-      "localhost",
+      "0.0.0.0",
       "--ws.port",
       "8546",
       "--ws.api",
@@ -245,6 +254,8 @@ async function run(
       "--no-discovery",
       "--db-path",
       paths.data,
+      "--jsonrpc-port",
+      port,
       "--chain",
       paths.genesis,
       "--keys-path",