Close the connection when download is complete

Author: toyamarinyon

lib/client.js

@@ -290,6 +290,7 @@ Client.prototype.download = function(src, dest, callback) {
     sftp_readStream.pipe(fs.createWriteStream(dest))
     .on('close',function(){
       self.emit('read', src);
+      self.close();
       callback(null);
     })
     .on('error', function(err){