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avoid some allocations during TLS handshake #97348

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Merged
merged 4 commits into from
Feb 12, 2024
Merged

avoid some allocations during TLS handshake #97348

merged 4 commits into from
Feb 12, 2024

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wfurt
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@wfurt wfurt commented Jan 22, 2024

this is follow-up #87874 and it contributes to #68951

The trivial change is SslStreamPal.Windows.cs. Somehow during the re-factoring I failed to notice that the flag is not set true by default any longer as it was when I started ;(
I found that when running final tests @davidfowl asked me to.

While running that I also found one more opportunity: When we query RemoteCertificate we always create safe handle and if there is no certificate (common for servers) then we set the handle to Invalid. This change shuffles the PAL code a little bit so we allocate SafeFreeCertContext only if there is certificate to wrap.

With that the allocations looks like this for 100 rounds on server:

image

@wfurt wfurt added this to the 9.0.0 milestone Jan 22, 2024
@wfurt wfurt requested review from stephentoub and rzikm January 22, 2024 21:39
@wfurt wfurt self-assigned this Jan 22, 2024
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ghost commented Jan 22, 2024

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Issue Details

this is follow-up #87874 and it contributes to #68951

The trivial change is SslStreamPal.Windows.cs. Somehow during the re-factoring I failed to notice that the flag is not set true by default any longer as it was when I started ;(
I found that when running final tests @davidfowl asked me to.

While running that I also found one more opportunity: When we query RemoteCertificate we always create safe handle and if there is no certificate (common for servers) then we set the handle to Invalid. This change shuffles the PAL code a little bit so we allocate SafeFreeCertContext only if there is certificate to wrap.

With that the allocations looks like this for 100 rounds on server:

image

Author: wfurt
Assignees: wfurt
Labels:

area-System.Net.Security
Milestone: 9.0.0

rzikm
rzikm approved these changes Jan 23, 2024
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LGTM

This was referenced Feb 9, 2024
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@wfurt wfurt merged commit d64c653 into dotnet:main Feb 12, 2024
@wfurt wfurt deleted the handshakeAlloc branch February 12, 2024 18:09
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@rzikm rzikm rzikm approved these changes

@stephentoub stephentoub Awaiting requested review from stephentoub

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@wfurt wfurt

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@wfurt @stephentoub @rzikm