Module constants 

Protocol constants for Braid-HTTP.

This module defines standard header names, status codes, merge type identifiers, and other protocol constants used throughout the Braid-HTTP implementation.

Organization

constants/
├── Top-level    - Common status codes (STATUS_SUBSCRIPTION, etc.)
├── status       - All HTTP status codes used by Braid
├── headers      - All Braid protocol header names (typed)
└── merge_types  - Merge type identifiers

Status Codes

Code	Constant	Description
200	status::OK	Standard response
206	status::PARTIAL_CONTENT	Range-based patches
209	STATUS_SUBSCRIPTION	Subscription update
293	STATUS_MERGE_CONFLICT	Version conflicts
410	STATUS_GONE	History dropped
416	STATUS_RANGE_NOT_SATISFIABLE	Invalid range

Examples

use crate::protocol;
use crate::protocol::constants::{headers, merge_types};

// Use top-level constants
let status = 209u16;
if status == protocol::STATUS_SUBSCRIPTION {
    println!("Subscription response");
}

// Use module constants
if status == protocol::status::SUBSCRIPTION {
    println!("Same as above");
}

// Use header name constants
let header_name = headers::VERSION;
assert_eq!(header_name, "Version");

// Use merge type constants
let merge_type = merge_types::DIAMOND;
assert_eq!(merge_type, "diamond");

Specification

See draft-toomim-httpbis-braid-http-04:

• Section 2: Versioning and merge types
• Section 3: Patches and Content-Range
• Section 4: Subscriptions and status codes

Modules

headers

Braid protocol header names.

media_types

Braid protocol media types.

merge_types

Merge type identifiers for conflict resolution.

status

Standard HTTP status codes used by Braid-HTTP.

Constants

STATUS_GONE

HTTP status code for history dropped (Section 4.5).

STATUS_MERGE_CONFLICT

HTTP status code for merge conflicts (Section 2.2).

STATUS_RANGE_NOT_SATISFIABLE

HTTP status code for range not satisfiable.

STATUS_SUBSCRIPTION

HTTP status code for subscription updates (Section 4).