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Return 429 response on HTTP max connection limit #13621

Merged
merged 5 commits into from
Jul 20, 2022
Merged

Return 429 response on HTTP max connection limit #13621

merged 5 commits into from
Jul 20, 2022

Commits on Jul 6, 2022

  1. Return 429 response on HTTP max connection limit 

    Instead of silently closing the connection, return a `429 Too Many Requests`
HTTP response with a helpful error message to aid debugging when the
connection limit is unintentionally reached.
    @wjordan
    wjordan committed Jul 6, 2022
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  2. set 10-millisecond write timeout for connection-limit 429 response

    @wjordan
    wjordan committed Jul 6, 2022
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Commits on Jul 15, 2022

  1. add rate-limit to connection-limiter error handler 

    The rate-limit prevents the TLS handshake necessary to write the HTTP response
from consuming too many server resources.
Add "Too many concurrent connections" log warning when
connection limit is reached.
    @wjordan
    wjordan committed Jul 15, 2022
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  2. add nomad.agent.http.exceeded metric 

    Count of HTTP connections exceeding concurrency limit.
    @wjordan
    wjordan committed Jul 15, 2022
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Commits on Jul 20, 2022

  1. add changelog and run goimports -d

    @tgross
    tgross committed Jul 20, 2022
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