server: try avoid the "address already in use" error #8842
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Replace defer l.Close() with l.Close() to shutdown the listener as fast as possible to avoid the "bind: address already in use" error that so often occurs in CI build. From: phayes/freeport#8 Reference: #6671
Codecov Report
@@ Coverage Diff @@
## master #8842 +/- ##
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Coverage 59.15% 59.15%
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Files 570 570
Lines 31770 31768 -2
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Hits 18793 18793
+ Misses 10776 10774 -2
Partials 2201 2201
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| panic(err) | ||
| } | ||
| if err := l.Close(); err != nil { | ||
| return "", "", fmt.Errorf("couldn't close the listener: %w", err) |
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should we wrap it?
sdkerrors.Wrap(sdkerrors.ErrIO, ....)
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Yes, sure, good one. I'm not just yet sure this PR actually fixes anything at all. I warmly welcome suggestions - and I'm CC'ing @odeke-em too.
If this does not improve anything, I'd just close it.
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The PR has good improvement - it removes panic
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[thinking aloud]
shouldn't I call Close() as the very last statement of this function before returning?
[/thinking aloud]
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Yup, @robert-zaremba got a great point that we should wrap it, for consistency with other errors.
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alessio
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Benchmark finished. See the result: https://github.orijtech.com/benchmark/result?id=925c74779d524a63b15eb724f5b6b961 |
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Benchmark beginning. Status page: https://github.orijtech.com/benchmark/status?commit=850135918558f7c43fb24fb86564c9454dcf66ea |
alessio
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LGTM, thank you @alessio! Good start for now and thanks for referencing that issue that I flagged a while ago. Later on would be nice for us to dig into the syscall package and figure out the calls to get an available address and bind to it then pass in a listener to the code that needs it. Currently still closing is at the mercy of the OS reusing file descriptors at a speed. Thanks again, and my apologies for the late reply.
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Benchmark finished. See the result: https://github.orijtech.com/benchmark/result?id=8877c91f9134468ca74f5b70e148324f |
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Benchmark beginning. Status page: https://github.orijtech.com/benchmark/status?commit=d02a39739be4850548c8c157660cb952b83e2ac7 |
Replace defer l.Close() with l.Close() to shutdown the listener
as fast as possible to avoid the "bind: address already in use"
error that so often occurs in CI build.
From: phayes/freeport#8
Reference: #6671
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