3xx Redirection Deprecated.
HTTP 305 Use Proxy
Deprecated. It once told the client to repeat the request through a proxy named in the Location header. Letting a server choose a client’s proxy was a security risk, so clients ignore it and servers shouldn’t send it.
Defined in RFC 9110, section 15.4.6(opens in a new tab)
//_01 Uptime checks
Is 305 up or down for a monitor?
Uptimecheck HTTP monitor
Default settings
Up. By default an Uptimecheck HTTP monitor accepts 200–399 as up, so a 305 counts as up. With a keyword check, the page must also contain the word you set.
Is it down? checker
Free, at /is-it-down/
Up: the checker counts any answer below 500 as the site answering.
//_02 Causes and fixes
Why you see 305 and what to do
Typical causes
- Very old or misconfigured software.
If you run the site
- Don’t send it.
If you’re a visitor
- Nothing to do.
Know the moment your site stops answering as it should
An Uptimecheck monitor requests your page as often as every minute, checks the status code against the ones you expect, confirms a failure with a second check and then alerts you.
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Questions
What does HTTP 305 mean?
Deprecated. It once told the client to repeat the request through a proxy named in the Location header. Letting a server choose a client’s proxy was a security risk, so clients ignore it and servers shouldn’t send it.
Does an uptime monitor count 305 as down?
Up. By default an Uptimecheck HTTP monitor accepts 200–399 as up, so a 305 counts as up. With a keyword check, the page must also contain the word you set.
Downtime is obsolete.
Set up your first monitor in under a minute, or look around the live demo first.
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