Signature
Both directions
The signature over the message, so the receiver can verify who sent it.
| On the wire | Signature: … |
|---|---|
| Category | Both directions |
Headers that can appear on either side.
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 Signature mean?
The signature over the message, so the receiver can verify who sent it.
Q. What does Signature look like on the wire?
It travels as Signature: …
Q. Where does Signature appear?
In both directions.
Q. What group does Signature belong to?
The both directions group; the rest of that group is listed further down.