3xx Redirection
HTTP 305 Use Proxy
The requested resource must be accessed through the proxy specified in the Location header. This status code is deprecated due to security concerns with in-band proxy configuration.
Common Causes
- Server requiring access through a specific proxy
- Legacy network configuration enforcing proxy usage
- Deprecated — rarely seen in modern systems
How to Fix
- 1Configure the client to use the specified proxy
- 2This status is deprecated — consider updating the server
- 3Use network-level proxy configuration instead
Example
HTTP 305 Use Proxy
GET /resource HTTP/1.1 → 305 Use Proxy → Location: http://proxy.example.com:8080/