bugfix: chunked request blocked when proxy to upstream

[dengqian]

Issues associated with this PR

#2218

Solutions

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UT result

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Benchmark

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Code Style

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[codecov]

Codecov Report

Base: 60.35% // Head: 60.30% // Decreases project coverage by -0.05% ⚠️

Coverage data is based on head (5b788da) compared to base (b335823).
Patch coverage: 0.00% of modified lines in pull request are covered.

❗ Current head 5b788da differs from pull request most recent head d7a30de. Consider uploading reports for the commit d7a30de to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2219      +/-   ##
==========================================
- Coverage   60.35%   60.30%   -0.06%     
==========================================
  Files         422      422              
  Lines       37050    37051       +1     
==========================================
- Hits        22363    22345      -18     
- Misses      12466    12484      +18     
- Partials     2221     2222       +1     

Impacted Files	Coverage Δ
pkg/stream/http/stream.go	35.02% <0.00%> (-0.08%)	⬇️
pkg/stream/stream.go	46.66% <0.00%> (-13.34%)	⬇️
pkg/stream/xprotocol/connpool_pingpong.go	50.00% <0.00%> (-12.11%)	⬇️
pkg/stream/xprotocol/conn.go	40.43% <0.00%> (-1.10%)	⬇️
pkg/module/http2/server.go	81.70% <0.00%> (-0.08%)	⬇️
pkg/module/http2/transport.go	78.91% <0.00%> (+0.14%)	⬆️
pkg/server/handler.go	40.50% <0.00%> (+0.71%)	⬆️
pkg/metrics/shm/zone.go	69.23% <0.00%> (+2.56%)	⬆️
pkg/mtls/sds/subscriber.go	78.43% <0.00%> (+3.92%)	⬆️

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[3062]

LGTM

[doujiang24]

@dengqian Nice catch, I think it fixed the bug, but I'm not sure it's the proper way.
@taoyuanyuan @nejisama may take a look~