bufferOutput property
bool bufferOutputread / write
Get or set if the HttpResponse should buffer output.
Default value is true.
Note: Disabling buffering of the output can result in very poor performance, when writing many small chunks.
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Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-io/HttpResponse/bufferOutput.html