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compress/gzip: always close bodyReader in Example_compressingReader
For #53362 Fixes #53414 Change-Id: I352164e70c136eed210c7ee4ceba5dc631f81f94 Reviewed-on: https://go-review.googlesource.com/c/go/+/412955 Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Joseph Tsai <joetsai@digital-static.net> Reviewed-by: Ian Lance Taylor <iant@google.com> Run-TryBot: Ian Lance Taylor <iant@google.com> Reviewed-by: Alex Rakoczy <alex@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org>
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@ -160,6 +160,10 @@ func Example_compressingReader() {
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// httpWriter is the body of the HTTP request, as an io.Writer.
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bodyReader, httpWriter := io.Pipe()
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// Make sure that bodyReader is always closed, so that the
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// goroutine below will always exit.
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defer bodyReader.Close()
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// gzipWriter compresses data to httpWriter.
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gzipWriter := gzip.NewWriter(httpWriter)
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@ -197,7 +201,6 @@ func Example_compressingReader() {
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// Note that passing req to http.Client.Do promises that it
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// will close the body, in this case bodyReader.
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// That ensures that the goroutine will exit.
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resp, err := ts.Client().Do(req)
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if err != nil {
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log.Fatal(err)
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