ReddRadar
Agent skill
clojure-ring-spec
Ring specification for HTTP server applications in Clojure. Use when working with: (1) Ring handlers (sync or async), (2) Ring request maps and their keys, (3) Ring response maps and their keys, (4) Ring middleware, (5) Ring adapters, (6) WebSocket responses and listeners, or when questions mention Ring spec, handler signatures, request/response map structure, or Ring protocols.
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npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/data/clojure-ring-spec
SKILL.md
Ring Spec (1.5.1)
Ring is an abstraction layer for building HTTP server applications in Clojure. Defines synchronous and asynchronous APIs.
Handlers
Synchronous handler (1 arg):
(fn [request] response)
Asynchronous handler (3 args):
(fn [request respond raise]
(respond response)) ; or (raise exception)
Dual-arity handler:
(fn
([request] response)
([request respond raise] (respond response)))
Middleware
Higher-order functions that augment handlers:
(fn [handler & config-options] enhanced-handler)
Adapters
Start HTTP server with handler and options:
(run-adapter handler options)
(run-adapter handler {:async? true}) ; for async handlers
Request Maps
| Key | Type | Required | Notes |
|---|---|---|---|
:body |
java.io.InputStream |
Request body | |
:character-encoding |
String |
DEPRECATED | |
:content-length |
String |
DEPRECATED | |
:content-type |
String |
DEPRECATED | |
:headers |
{String String} |
Yes | Lowercase keys; multi-value concat with ,; cookie uses ; |
:protocol |
String |
Yes | e.g. "HTTP/1.1" |
:query-string |
String |
After ?, excludes ? |
|
:remote-addr |
String |
Yes | Client or last proxy IP |
:request-method |
Keyword |
Yes | :get, :post, etc. |
:scheme |
Keyword |
Yes | :http, :https, :ws, :wss |
:server-name |
String |
Yes | Server name or IP |
:server-port |
Integer |
Yes | Port |
:ssl-client-cert |
java.security.cert.X509Certificate |
SSL cert if provided | |
:uri |
String |
Yes | Absolute path, starts with / |
Response Maps
| Key | Type | Required |
|---|---|---|
:body |
ring.core.protocols/StreamableResponseBody |
|
:headers |
{String String} or {String [String]} |
Yes |
:status |
Integer |
Yes |
Response body satisfies StreamableResponseBody protocol:
(defprotocol StreamableResponseBody
(write-body-to-stream [body response output-stream]))
Default implementations: byte[], String, clojure.lang.ISeq, java.io.InputStream, java.io.File, nil
WebSockets
WebSocket response (returned from handler):
(fn [request]
#:ring.websocket{:listener websocket-listener
:protocol "optional-subprotocol"})
Or from async handler:
(fn [request respond raise]
(respond #:ring.websocket{:listener websocket-listener}))
WebSocket Listener Protocol
(defprotocol Listener
(on-open [listener socket])
(on-message [listener socket message]) ; message: CharSequence or ByteBuffer
(on-pong [listener socket data]) ; data: ByteBuffer
(on-error [listener socket throwable])
(on-close [listener socket code reason])) ; code: int, reason: String
Optional ping handler:
(defprotocol PingListener
(on-ping [listener socket data])) ; If not implemented, adapter auto-responds to pings
WebSocket Socket Protocol
(defprotocol Socket
(-open? [socket]) ; Returns truthy if connected
(-send [socket message]) ; message: CharSequence or ByteBuffer
(-ping [socket data]) ; data: ByteBuffer
(-pong [socket data]) ; data: ByteBuffer (unsolicited)
(-close [socket code reason])) ; code: int, reason: String
Optional async send:
(defprotocol AsyncSocket
(-send-async [socket message succeed fail])) ; succeed: (fn []), fail: (fn [throwable])
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