fix request memory leak issue caused by new version

app.js

@@ -31,7 +31,7 @@ function verifyGenesisBlock(scope, block) {
 function main() {
   process.stdin.resume();
 
-  var version = '1.1.3';
+  var version = '1.1.4';
   program
     .version(version)
     .option('-c, --config <path>', 'Config file path')

package.json

@@ -1,6 +1,6 @@
 {
   "name": "asch",
-  "version": "1.1.3",
+  "version": "1.1.4",
   "private": true,
   "scripts": {
     "start": "node app.js",
@@ -9,14 +9,14 @@
   "author": "Qingfeng Shan <[email protected]>",
   "dependencies": {
     "array.prototype.find": "~1.0.0",
-    "array.prototype.findindex": "*",
+    "array.prototype.findindex": "2.0.0",
     "asch-sandbox": "https://github.com/sqfasd/asch-sandbox/tarball/master",
     "async": "^1.5.2",
     "bignumber": "https://github.com/sqfasd/bignumber/tarball/master",
-    "body-parser": "*",
-    "bytebuffer": "*",
-    "change-case": "*",
-    "colors": "*",
+    "body-parser": "1.15.2",
+    "bytebuffer": "5.0.1",
+    "change-case": "3.0.0",
+    "colors": "1.1.2",
     "commander": "~2.6.0",
     "compression": "^1.6.1",
     "cors": "^2.7.1",
@@ -27,16 +27,16 @@
     "express": "4.x",
     "express-domain-middleware": "*",
     "extend": "^2.0.0",
-    "ip": "*",
+    "ip": "1.1.3",
     "json-sql": "https://github.com/sqfasd/json-sql/tarball/master",
-    "method-override": "*",
+    "method-override": "2.3.6",
     "protocol-buffers": "^3.1.6",
-    "randomstring": "*",
-    "request": "*",
+    "randomstring": "1.1.5",
+    "request": "2.74.0",
     "rimraf": "^2.4.1",
-    "socket.io": "*",
-    "strftime": "*",
-    "util-extend": "*",
+    "socket.io": "1.4.8",
+    "strftime": "0.9.2",
+    "util-extend": "1.0.3",
     "valid-url": "^1.0.9",
     "z-schema": "https://github.com/sqfasd/z-schema/tarball/master"
   },