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*: drain http.Response.Body before closing #4880

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merged 1 commit into from
Mar 30, 2016
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gyuho
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@gyuho gyuho commented Mar 28, 2016

Draining the body prevents the TCP/TLS connection from closing
and makes the connection available for reuse.

@gyuho
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gyuho commented Mar 28, 2016

Won't do much speed-up since this is not in the critical path, I think. *_1 is the one with this patch. At least no regression?

bench-plot-avg-cpu
bench-plot-avg-latency-ms
bench-plot-avg-mem
bench-plot-throughput

(Reference google/go-github#317 (comment))

@@ -231,6 +232,7 @@ func getVersion(m *Member, rt http.RoundTripper) (*version.Versions, error) {
}
// etcd 2.0 does not have version endpoint on peer url.
if resp.StatusCode == http.StatusNotFound {
io.Copy(ioutil.Discard, resp.Body)
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grecefulClose(resp http.Response) {
   io.Copy()
   resp.Body.Close()
}

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gyuho commented Mar 30, 2016

@xiang90 PTAL.


// gracefulClose drains http.Response.Body to prevent TCP/TLS connections
// from closing, then making it available for reuse.
func gracefulClose(resp *http.Response) {
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move this to pkg/httputil?

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gyuho commented Mar 30, 2016

@xiang90 PTAL. Thanks!

@@ -19,6 +19,7 @@ import (
"encoding/binary"
"fmt"
"io"
"io/ioutil"
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remove this line?

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xiang90 commented Mar 30, 2016

LGTM after tests pass.

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gyuho commented Mar 30, 2016

My goimports didn't work. Fixed. Will merge after green lights. Thanks!

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2 participants