Unblock subsequent requests when an async over sync Dns call runs for too long #92863
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This is an alternative for #92862 in case we are willing to take a more intrusive fix for #81023. It replaces the queue of Tasks with a queue (linked list) of
DnsRequestWaiter : TaskCompletionSource
objects which store time-stamps. This allows signaling completion to (and unblock) subsequent tasks in case we detect that a request is long-running (> 1 sec
).Fixes #81023
Fixes #92054
Fixes #92045