diff --git a/lib/cmds/proxy.js b/lib/cmds/proxy.js
new file mode 100644
index 000000000..2e52645c7
--- /dev/null
+++ b/lib/cmds/proxy.js
@@ -0,0 +1,52 @@
+const httpProxy = require('http-proxy');
+const http = require('http');
+
+exports.serve = function(host, port){
+    let commList = {};
+
+    let proxy = httpProxy.createProxyServer({});
+    let server = http.createServer((req, res) => {
+
+        let reqBody = [];
+        req.on('data', (b) => { reqBody.push(b); })
+            .on('end', () => {
+            reqBody = Buffer.concat(reqBody).toString();
+            if(reqBody){
+                let jsonO = JSON.parse(reqBody);
+                if(jsonO.method == "eth_sendTransaction"){
+                commList[jsonO.id] = {
+                    requestData: jsonO.params.data
+                };
+                }
+            }
+            });
+
+        proxy.proxyRequest(req, res, {
+        target:  `http://${host}:${port + 1}`
+        });
+
+        proxy.on('proxyRes', (proxyRes, req, res) => {
+            let resBody = [];
+            proxyRes.on('data', (b) => resBody.push(b))
+            proxyRes.on('end', function () {
+                resBody = Buffer.concat(resBody).toString();
+                try {
+                let jsonO = JSON.parse(resBody);
+                if(commList[jsonO.id]){
+                    commList[jsonO.id].transactionHash = resBody;
+
+                    // TODO: decode commlist
+                    // ” SimpleStorage> set(5) | tx: 0xef234f16etc ”
+
+                    delete commList[jsonO.id];
+                }
+                } catch(e){
+                //
+                }
+            });        
+        });
+
+    });
+
+    server.listen(port);
+}
diff --git a/lib/cmds/simulator.js b/lib/cmds/simulator.js
index d3d5a4c50..ddfb18cbf 100644
--- a/lib/cmds/simulator.js
+++ b/lib/cmds/simulator.js
@@ -1,5 +1,5 @@
 let shelljs = require('shelljs');
-
+let proxy = require('./proxy');
 class Simulator {
   constructor(options) {
     this.blockchainConfig = options.blockchainConfig;
@@ -19,10 +19,11 @@ class Simulator {
       process.exit();
     }
 
-    cmds.push("-p " + ((options.port || this.blockchainConfig.rpcPort || 8545) + 1));
-    
-    
-    cmds.push("-h " + (options.host || this.blockchainConfig.rpcHost || 'localhost'));
+    let host = (options.host || this.blockchainConfig.rpcHost || 'localhost');
+    let port = (options.port || this.blockchainConfig.rpcPort || 8545);
+
+    cmds.push("-p " + (port + 1));
+    cmds.push("-h " + host);
     cmds.push("-a " + (options.numAccounts || 10));
     cmds.push("-e " + (options.defaultBalance || 100));
     cmds.push("-l " + (options.gasLimit || 8000000));
@@ -41,61 +42,9 @@ class Simulator {
 
     const program = ganache ? 'ganache-cli' : 'testrpc';
 
-     shelljs.exec(`${program} ${cmds.join(' ')} &`, {async : true});
+    shelljs.exec(`${program} ${cmds.join(' ')} &`, {async : true});
    
-      let httpProxy = require('http-proxy');
-      let http = require('http');
-      let _port = options.port || this.blockchainConfig.rpcPort || 8545;
-      let _host = (options.host || this.blockchainConfig.rpcHost || 'localhost');
-
-      let commList = {};
-
-      let proxy = httpProxy.createProxyServer({});
-      let server = http.createServer((req, res) => {
-
-        let reqBody = [];
-        req.on('data', (b) => { reqBody.push(b); })
-           .on('end', () => {
-              reqBody = Buffer.concat(reqBody).toString();
-              if(reqBody){
-                let jsonO = JSON.parse(reqBody);
-                if(jsonO.method == "eth_sendTransaction"){
-                  commList[jsonO.id] = {
-                    requestData: jsonO.params.data
-                  };
-                }
-              }
-            });
-
-        proxy.proxyRequest(req, res, {
-          target:  `http://${_host}:${_port + 1}`
-        });
-
-        proxy.on('proxyRes', function (proxyRes, req, res) {
-          let resBody = [];
-          proxyRes.on('data', (b) => resBody.push(b))
-          proxyRes.on('end', function () {
-            resBody = Buffer.concat(resBody).toString();
-            try {
-              let jsonO = JSON.parse(resBody);
-              if(commList[jsonO.id]){
-                commList[json0.id].transactionHash = resBody;
-
-                // TODO: decode commlist
-                // ” SimpleStorage> set(5) | tx: 0xef234f16etc ”
-
-                delete commList[json0.id];
-              }
-            } catch(e){
-              //
-            }
-          });        
-        });
-
-      });
-      
-      server.listen(_port);
-    
+    proxy.serve(host, port);
   }
 }