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plugin/forward: make Yield not block (#3336)

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* plugin/forward: may Yield not block

Yield may block when we're super busy with creating (and looking) for
connection. Set a small timeout on Yield, to skip putting the connection
back in the queue.

Use persistentConn troughout the socket handling code to be more
consistent.

Signed-off-by: Miek Gieben <miek@miek.nl>

Dont do

Signed-off-by: Miek Gieben <miek@miek.nl>

* Set used in Yield

This gives one central place where we update used in the persistConns

Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben 2019-10-01 16:39:42 +01:00 • committed by GitHub
parent 7b69dfebb5
commit 2d98d520b5
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8 changed files with 53 additions and 105 deletions
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plugin/forward/proxy.go
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@ -66,7 +66,7 @@ func (p *Proxy) Down(maxfails uint32) bool {
}
// close stops the health checking goroutine.
func (p *Proxy) close() { p.probe.Stop() }
func (p *Proxy) stop() { p.probe.Stop() }
func (p *Proxy) finalizer() { p.transport.Stop() }
// start starts the proxy's healthchecking.