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Add support max-text-message-size parameter for https://github.com/st… #26

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23 changes: 20 additions & 3 deletions src/slack_rtm/core.clj
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Original file line number Diff line number Diff line change
@@ -1,4 +1,6 @@
(ns slack-rtm.core
(:import (org.eclipse.jetty.websocket.client WebSocketClient)
(org.eclipse.jetty.util.ssl SslContextFactory))
(:require [clj-slack.rtm :as rtm]
[clj-slack.core :refer [slack-request]]
[clojure.core.async :as async
Expand Down Expand Up @@ -26,12 +28,26 @@
(recur))))
ch))

(defn- client
"Create a new instance of `WebSocketClient` with max-text-message-size.
(for https://github.com/stalefruits/gniazdo/issues/22)"
[max-text-message-size]
(let [client (WebSocketClient. (SslContextFactory.))]
(try
(when max-text-message-size
(.setMaxTextMessageSize (.getPolicy client) max-text-message-size))
(doto client .start)
(catch Throwable ex
(.stop client)
(throw ex)))))

(defn- ws-connect
"Connects to the provided WebSocket URL and forward all listener
events to the provided channel."
[url callback-ch]
[url callback-ch {:keys [max-text-message-size] :as connection}]
(ws/connect
url
:client (client max-text-message-size)
:on-connect #(go (>! callback-ch {:type :on-connect
:session %}))

Expand Down Expand Up @@ -101,7 +117,8 @@
(defn- build-connection-map [token-or-map]
(if (string? token-or-map)
{:api-url "https://slack.com/api"
:token token-or-map}
:token token-or-map
:max-text-message-size 65536}
token-or-map))

(defn- internal-connect
Expand Down Expand Up @@ -154,7 +171,7 @@
;; get a channel that can be used to send data to slack
dispatcher (-> start
:url
(ws-connect callback-ch)
(ws-connect callback-ch connection)
spin-dispatcher-channel)]
{:start start
:websocket-publication websocket-publication
Expand Down