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adds server url template abnf #4264

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merged 11 commits into from
Jan 2, 2025
17 changes: 17 additions & 0 deletions src/oas.md
Original file line number Diff line number Diff line change
Expand Up @@ -557,6 +557,23 @@ servers:

An object representing a Server Variable for server URL template substitution.

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The server URL templating is defined by the following [ABNF](https://tools.ietf.org/html/rfc5234) syntax.

```abnf
server-url-template = 1*( server-literal / template-expression )
server-literal = 1*pchar
template-expression = "{" template-expression-param-name "}"
template-expression-param-name = 1*( %x00-79 / %x7C / %x7E-10FFFF ) ; every UTF8 character except { and }
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pchar = unreserved / pct-encoded / sub-delims / ":" / "@"
unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
pct-encoded = "%" HEXDIG HEXDIG
sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
/ "*" / "+" / "," / ";" / "="
```

Here, `pchar`, `unreserved`, `pct-encoded` and `sub-delims` definitions are taken from [RFC 3986](https://tools.ietf.org/html/rfc3986).

##### Fixed Fields

| Field Name | Type | Description |
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