From 519981a22c8b572eb4b60b04f149580e40095ee1 Mon Sep 17 00:00:00 2001
From: johnnyman727 <johnnyman727@gmail.com>
Date: Wed, 21 Oct 2015 22:55:31 -0700
Subject: [PATCH] Catches closed connections before an exec is attempted

---
 lib/lan_connection.js | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/lib/lan_connection.js b/lib/lan_connection.js
index 4dd9600c..dac891cd 100644
--- a/lib/lan_connection.js
+++ b/lib/lan_connection.js
@@ -37,6 +37,11 @@ LAN.Connection.prototype.exec = function(command) {
   var self = this;
   return new Promise(function(resolve, reject) {
 
+    // Ensure this connection hasn't been closed
+    if (self.closed) {
+      return reject(new Error('Remote SSH connection has already been closed'));
+    }
+
     // Execute the command
     if (!Array.isArray(command)) {
       return reject(new Error('Command to execute must be an array of args.'));
@@ -87,6 +92,9 @@ LAN.Connection.prototype.open = function() {
       // Reject with error
       resolve(self);
     }).connect(self.auth);
+    self.ssh.once('close', function() {
+      self.closed = true;
+    });
   });
 };