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It can be accessed and reviewed at: https://github.com/lxc/lxd/pull/4666
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=== Description (from pull-request) ===
With out keep alive, lxc will block indefinitely when there is network change.
From 31e017c10f1a62347e12456ed16d60d662eacdc6 Mon Sep 17 00:00:00 2001
From: Jingkui Wang <jkw...@google.com>
Date: Mon, 18 Jun 2018 09:44:22 -0700
Subject: [PATCH] Enable tcp KeepAlive
This will stop lxc from block indefinitely when there is network change.
---
shared/network.go | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/shared/network.go b/shared/network.go
index 2ccb7dc8c..f47f75cea 100644
--- a/shared/network.go
+++ b/shared/network.go
@@ -31,6 +31,10 @@ func RFC3493Dialer(network, address string) (net.Conn,
error) {
if err != nil {
continue
}
+ if tc, ok := c.(*net.TCPConn); ok {
+ tc.SetKeepAlive(true)
+ tc.SetKeepAlivePeriod(3 * time.Second)
+ }
return c, err
}
return nil, fmt.Errorf("Unable to connect to: " + address)
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