WebSocket Client
This is the cljs (client) side of the websocket connection. This should be paired with ftravers/websocket-server.
Clojars
Usage
(ns ...
(:require [cljs.core.async :refer [<! >!]]
[websocket-client.core :refer [async-websocket]])
(:require-macros [cljs.core.async.macros :refer [go]]))
(defn websocket-test []
(let [url "ws://localhost:7890"
aws (async-websocket url) ;; initialize & connect on the websocket
]
;; Write into the websocket
(go (>! aws "Sending a test messsage."))
;; Read out of the websocket
(go (.log js/console (<! aws)))))We always send strings over websockets. One interesting usecase (but potentially dangerous) is to send EDN over the websocket, for this case we just convert the EDN to and from a string.
(defn websocket-test []
(let [url "ws://localhost:7890"
aws (async-websocket url) ;; initialize the websocket
]
;; write some EDN
(go (>! aws (str {:count 1})))
;; read some EDN
(go
(.log
js/console
(str (= {:count 11} (read-string (<! aws))))))))This would correspond to a request handler on the server that looks like:
(defn request-handler-edn-add10
"This function will take some EDN and increment a value by 10, and send it back."
[data]
(println "Received Data: " (str data))
(let [req (edn/read-string data)
resp (str {:count (+ 10 (:count req))})]
(println "Sending Resp: " resp)
resp))