openResty pumping its own response payload

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doc temp

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Apr 19, 2022, 6:05:27 AMApr 19
to openresty-en
Hello, 

We are using openResty as reverse proxy. 

For some reason in the last few days openResty has started pumping its own response 
{"message":'Hello, world"} for random requests. Atleast 5% of the requests are injected with this response. 

Looking into both upstream and downstream applications, i see no further clues. 

is there something fishy here? 

doc temp

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Apr 19, 2022, 6:19:21 AMApr 19
to openresty-en
And upon restarting nginx , this issue seems to be fixed. 

But still wondering what is the root cause. 

Junlong li

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Apr 19, 2022, 10:41:29 AMApr 19
to openresty-en
maybe goto the wrong upstream.
you can use tcpdump to capture the upstream packet if it is plain(HTTP but not HTTPs).

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