Fix issue 104

[jbrichau]

Fix for issue #104.

I defined a rest handler that serves a large (55MB) text file:

get

	<get>
	<path: '/'>
	<produces: 'application/json'>

	| file |
	file := GsFile openReadOnServer: 'largefile.txt'.
	^ file contents

before the fix, it takes +-35s to respond:

johanbrichau@JohansMacBookAir ~ % time curl http://localhost:8383/test --output bla.txt
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 55.2M  100 55.2M    0     0  1543k      0  0:00:36  0:00:36 --:--:-- 12.8M
curl http://localhost:8383/test --output bla.txt  0.01s user 0.05s system 0% cpu 36.698 total

after the fix, it takes 1.5s to respond:

johanbrichau@JohansMacBookAir ~ % time curl http://localhost:8383/test --output bla.txt
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 55.2M  100 55.2M    0     0  33.9M      0  0:00:01  0:00:01 --:--:-- 33.9M
curl http://localhost:8383/test --output bla.txt  0.01s user 0.05s system 3% cpu 1.653 total

[jbrichau]

The failing test testAmazonAWS is also failing without the changes made in this PR. It was working last month (see CI actions history) but it's now failing with "SSL alert number 40".

I also did manual tests with Seaside, which revealed no issues.