From 0299fd5d703d2a576125b414abbe172eaec9f65e Mon Sep 17 00:00:00 2001
From: Hendrik Hofstadt <hendrik@certus.one>
Date: Thu, 20 Jun 2019 20:34:45 +0200
Subject: [PATCH] Swap dead sessions

---
 manager.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/manager.go b/manager.go
index 3bdca77..b7fdf4b 100644
--- a/manager.go
+++ b/manager.go
@@ -3,6 +3,7 @@ package yubihsm
 import (
 	"bytes"
 	"errors"
+	"log"
 	"sync"
 	"time"
 
@@ -69,6 +70,12 @@ func (s *SessionManager) pingRoutine() {
 			if !bytes.Equal(parsedResp.Data, echoPayload) {
 				err = errors.New("echoed data is invalid")
 			}
+		} else {
+			// Session seems to be dead - reconnect and swap
+			err = s.swapSession()
+			if err != nil {
+				log.Printf("swapping dead session failed; err=%v", err)
+			}
 		}
 
 		s.keepAlive.Reset(pingInterval)