raise the ping timeout from 2s to 10s (avoid #294)

server/ping-lite.js

@@ -21,15 +21,17 @@ function Ping(host, options) {
 
     events.EventEmitter.call(this);
 
+    const timeout = 10;
+
     if (WIN) {
         this._bin = "c:/windows/system32/ping.exe";
-        this._args = (options.args) ? options.args : [ "-n", "1", "-w", "5000", host ];
+        this._args = (options.args) ? options.args : [ "-n", "1", "-w", timeout * 1000, host ];
         this._regmatch = /[><=]([0-9.]+?)ms/;
 
     } else if (LIN) {
         this._bin = "/bin/ping";
 
-        const defaultArgs = [ "-n", "-w", "2", "-c", "1", host ];
+        const defaultArgs = [ "-n", "-w", timeout, "-c", "1", host ];
 
         if (net.isIPv6(host) || options.ipv6) {
             defaultArgs.unshift("-6");
@@ -46,13 +48,13 @@ function Ping(host, options) {
             this._bin = "/sbin/ping";
         }
 
-        this._args = (options.args) ? options.args : [ "-n", "-t", "2", "-c", "1", host ];
+        this._args = (options.args) ? options.args : [ "-n", "-t", timeout, "-c", "1", host ];
         this._regmatch = /=([0-9.]+?) ms/;
 
     } else if (FBSD) {
         this._bin = "/sbin/ping";
 
-        const defaultArgs = [ "-n", "-t", "2", "-c", "1", host ];
+        const defaultArgs = [ "-n", "-t", timeout, "-c", "1", host ];
 
         if (net.isIPv6(host) || options.ipv6) {
             defaultArgs.unshift("-6");