Set and get the deadline for the response. The deadline is timed from the time it's set. Setting a new deadline will override any previous deadline. When a deadline is exceeded, the response will be closed and any further data ignored.
To disable a deadline, set the deadline to null.
The deadline is null by default.
Duration deadline
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https://api.dart.dev/stable/2.5.0/dart-io/HttpResponse/deadline.html