add optioan to specify rpc server option

remix-simulator/bin/ethsim

@@ -23,11 +23,13 @@ program
   .option('-p, --port [port]', 'specify port')
   .option('-b, --ip [host]', 'specify host')
   .option('-c, --coinbase [coinbase]', 'specify host')
+  .option('--rpc', 'run rpc server only')
   .parse(process.argv)
 
 const Server = require('../src/server')
 const server = new Server({
-  coinbase: program.coinbase || "0x0000000000000000000000000000000000000000"
+  coinbase: program.coinbase || "0x0000000000000000000000000000000000000000",
+  rpc: program.rpc
 })
 server.start(program.host || '127.0.0.1', program.port || 8545)
 

remix-simulator/src/server.js

@@ -14,6 +14,7 @@ class Server {
     }).catch((error) => {
       log(error)
     })
+    this.rpcOnly = options.rpc;
   }
 
   start (host, port) {
@@ -24,28 +25,31 @@ class Server {
     app.use(bodyParser.json())
 
     app.get('/', (req, res) => {
+      console.dir("/ request")
       res.send('Welcome to remix-simulator')
     })
 
+    if (this.rpcOnly) {
       app.use((req, res) => {
         this.provider.sendAsync(req.body, (err, jsonResponse) => {
           if (err) {
-          return res.send(JSON.stringify({error: err}))
+            return res.send(JSON.stringify({ error: err }))
           }
           res.send(jsonResponse)
         })
       })
-
+    } else {
       app.ws('/', (ws, req) => {
-      ws.on('message', function (msg) {
+        ws.on('message', (msg) => {
           this.provider.sendAsync(JSON.parse(msg), (err, jsonResponse) => {
             if (err) {
-            return ws.send(JSON.stringify({error: err}))
+              return ws.send(JSON.stringify({ error: err }))
             }
             ws.send(JSON.stringify(jsonResponse))
           })
         })
       })
+    }
 
     app.listen(port, host, () => log('Remix Simulator listening on port ' + host + ':' + port))
   }