305 Use Proxy
3xx Redirection
Tells the client to reach the resource through a proxy; deprecated for security reasons.
| On the wire | HTTP/1.1 305 Use Proxy |
|---|---|
| Code | 305 |
| Is it an error | No — not an error |
| Category | 3xx Redirection |
Go somewhere else — the distinction is permanent versus temporary.
How to read this
- The first digit of a status code carries the meaning: 4 means the request, 5 means the server.
- 404 means "not there"; 403 means "there, but not for you". Swapping them makes debugging slower.
- Header names are case-insensitive — Content-Type and content-type are the same header.
- Caching and CORS problems usually come down to one header line, visible in the browser’s network tab.
Frequently asked questions
Q. What does HTTP 305 Use Proxy mean?
Tells the client to reach the resource through a proxy; deprecated for security reasons.
Q. What does 305 Use Proxy look like on the wire?
It travels as HTTP/1.1 305 Use Proxy
Q. Is 305 Use Proxy an error?
No — it is part of a normal exchange, not a failure.
Q. What group does 305 Use Proxy belong to?
The 3xx redirection group; the rest of that group is listed further down.