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plugin/forward: remove dynamic read timeout (#2319)

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* plugin/forward: remove dynamic read timeout

We care about an upstream being there, so we still have a dynamic dial
time out (by way higher then 200ms) of 1s; this should be fairly stable
for an upstream. The read timeout if more variable because of cached and
non cached responses. As such remove his logic entirely.

Drop to 2s read timeout.

Fixes #2306

Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben
2018-11-20 08:48:56 +01:00
committed by GitHub
parent e94ce7a12a
commit a1d92c51cd
5 changed files with 15 additions and 26 deletions
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12
plugin/forward/persistent.go
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@@ -31,7 +31,7 @@ type Transport struct {
func newTransport(addr string) *Transport {
t := &Transport{
avgDialTime: int64(defaultDialTimeout / 2),
avgDialTime: int64(maxDialTimeout / 2),
conns: make(map[string][]*persistConn),
expire: defaultExpire,
addr: addr,
@@ -159,8 +159,10 @@ func (t *Transport) SetExpire(expire time.Duration) { t.expire = expire }
func (t *Transport) SetTLSConfig(cfg *tls.Config) { t.tlsConfig = cfg }
const (
defaultExpire = 10 * time.Second
minDialTimeout = 100 * time.Millisecond
maxDialTimeout = 30 * time.Second
defaultDialTimeout = 30 * time.Second
defaultExpire = 10 * time.Second
minDialTimeout = 1 * time.Second
maxDialTimeout = 30 * time.Second
// Some resolves might take quite a while, usually (cached) responses are fast. Set to 2s to give us some time to retry a different upstream.
readTimeout = 2 * time.Second
)