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Mesh code.
Pay correct attention to status codes coming back from services. Generate
better and consistent error messages when problems arise. There's more to
do in error handling, need a way to cleanly fail all request types, only
have that for LOD at this point. Do better keeping the HTTP pipeline between
the low and high water marks. This was made challenging because the outer
most code couldn't really see what's going on internally (whose actions are
delayed in a worker thread). More to do here, the debug-like requests don't
honor limits, that will come later. Made retry counts available from llcorehttp
which can be used by the throttle-anticipating logic to advance the count.
It helps but it reinforces the coupling between viewer and server which I
do not like.
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Content-Range
Don't rely on a response body being present should a
Content-Range header be parsed. Unit tests captured
the original crash and confirm the fix.
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Added second mesh class as well as an asset upload class.
Refactored initialization to use less code and more data to
cleanly get http started. Modified mesh to use the new
http class for large requests (>2MB for now). Added additional
timeout setting to llcorehttp to distinguish connection timeout
from transport timeout and are now using transport timeout
values for large asset downloads that may need more time.
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When releasing HTTP waiters, avoid unnecessary sort activity.
For Content-Type in responses, let libcurl do the work and removed
my parsing of headers. Drop Content-Encoding as libcurl will deal
with that. If anyone is interested, they can parse.
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HttpResponse object now has two strings for these content headers.
Either or both may be empty. Tidied up the cross-platform string
code and got more defensive about the length of a header line.
Integration test for the new response object.
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First, try to issue ranged GETs that are always at least partially
satisfiable. This will keep Varnish-type caches from simply sending
back 200/full asset responses to unsatisfiable requests. Implement
awareness of Content-Range headers as well. Currently they're not
coming back but they will be someday.
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<offset, length, fulllength>.
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This is the first functional viewer pass with the HTTP work of the texture fetch
code performed by the llcorehttp library. Not exactly a 'drop-in' replacement
but a work-alike with some changes (e.g. handler notification in consumer
thread versus responder notification in worker thread).
This also includes some temporary changes in the priority scheme to prevent
the kind of priority inversion found in VWR-28996. Scheme used here does
provide liveness if not optimal responsiveness or order-of-operation.
The llcorehttp library at this point is far from optimally performing.
Its worker thread is making relatively poor use of cycles it gets and
it doesn't idle or sleep intelligently yet. This early integration step
helps shake out the interfaces, implementation niceties will be covered
soon.
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The unit/integration tests don't work yet as I'm still battling cmake/autobuild
as usual but first milestone passed.
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