{"id":27405,"date":"2020-06-27T20:13:20","date_gmt":"2020-06-27T18:13:20","guid":{"rendered":"https:\/\/pi3g.com\/?p=27405"},"modified":"2020-06-27T20:13:20","modified_gmt":"2020-06-27T18:13:20","slug":"envoy-fix-for-serving-big-files-from-the-backend-timeouts-aborted-downloads","status":"publish","type":"post","link":"https:\/\/pi3g.com\/de\/envoy-fix-for-serving-big-files-from-the-backend-timeouts-aborted-downloads\/","title":{"rendered":"envoy Fix f\u00fcr das Ausliefern gro\u00dfer Dateien aus dem Backend \/ Timeouts \/ abgebrochene Downloads"},"content":{"rendered":"

Customers were complaining about not being able to download big files from our websites (e.g. PiDoctor on PiCockpit.com). <\/p>\n

Initially I could not replicate the issue locally, the files seemed to be downloading fine.<\/p>\n

After further investigation I determined that the downloads were cutting out after a certain time \u2013 depending on your download speed, thus, for some customers the downloads would fail.<\/p>\n

Because I have a reasonably fast connection, for me the downloads would work. <\/p>\n

The timeout turns out to be 15 seconds<\/strong>.<\/p>\n

A debug message from envoy might look something like this:<\/p>\n

penvoyage-athena-envoy | [2020-06-27 16:18:57.492][21][debug][router] [source\/common\/router\/router.cc:681] [C37][S12388594366303232323] upstream timeout<\/b><\/p>\n

<\/strong>
<\/b><\/p>\n

Further investigation with the Envoy documentation showed that, indeed, there was such a default timeout:<\/p>\n

\"image\"<\/a><\/p>\n

Therefore the timeout needs to be set to 0s for the respective route:<\/p>\n

\"image\"<\/a><\/p>\n

or one with more context:<\/p>\n

\"image\"<\/a><\/p>\n

in clear text:<\/p>\n

\n

route_config:
   virtual_hosts:
   – name: backend
     domains: [“*”]
     routes:
     – match: { prefix: “\/.well-known\/acme-challenge\/”}
       route:
         cluster: target_certbot
         timeout: 0s<\/strong>\n<\/p>\n<\/blockquote>\n

Set this per route timeout to allow big downloads without timeouts. Keep your customers happy, and they will keep you happy.<\/p>\n

Ref<\/h1>\n