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Binary data support #398

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Binary data support #398

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3de8274
Made most minimal modifications possible to enable binary support.
rosejn Jan 19, 2022
577462b
adding deps.edn for github deps to work
rosejn Jan 20, 2022
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7 changes: 7 additions & 0 deletions deps.edn
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
{:deps
{org.clojure/core.async {:mvn/version "1.3.610"}
com.taoensso/encore {:mvn/version "3.12.1"}
org.java-websocket/Java-WebSocket {:mvn/version "1.5.1"}
org.clojure/tools.reader {:mvn/version "1.3.5"}
com.taoensso/timbre {:mvn/version "5.1.2"}}
}
32 changes: 10 additions & 22 deletions src/taoensso/sente.cljc
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Expand Up @@ -204,37 +204,24 @@
;; * Packing includes ->str encoding, and may incl. wrapping to carry cb info.

(defn- unpack "prefixed-pstr->[clj ?cb-uuid]"
[packer prefixed-pstr]
(have? string? prefixed-pstr)
(let [wrapped? (enc/str-starts-with? prefixed-pstr "+")
pstr (subs prefixed-pstr 1)
clj
[packer pstr]
(let [[clj ?cb-uuid]
(try
(interfaces/unpack packer pstr)
(catch #?(:clj Throwable :cljs :default) t
(debugf "Bad package: %s (%s)" pstr t)
[:chsk/bad-package pstr]))

[clj ?cb-uuid] (if wrapped? clj [clj nil])
?cb-uuid (if (= 0 ?cb-uuid) :ajax-cb ?cb-uuid)]

(tracef "Unpacking: %s -> %s" prefixed-pstr [clj ?cb-uuid])
[clj ?cb-uuid]))

(defn- pack "clj->prefixed-pstr"
([packer clj]
(let [;; "-" prefix => Unwrapped (has no callback)
pstr (str "-" (interfaces/pack packer clj))]
(tracef "Packing (unwrapped): %s -> %s" clj pstr)
pstr))
(pack packer clj nil))

([packer clj ?cb-uuid]
(let [;;; Keep wrapping as light as possible:
?cb-uuid (if (= ?cb-uuid :ajax-cb) 0 ?cb-uuid)
wrapped-clj (if ?cb-uuid [clj ?cb-uuid] [clj])
;; "+" prefix => Wrapped (has callback)
pstr (str "+" (interfaces/pack packer wrapped-clj))]
(tracef "Packing (wrapped): %s -> %s" wrapped-clj pstr)
(let [?cb-uuid (if (= ?cb-uuid :ajax-cb) 0 ?cb-uuid)
wrapped-clj [clj ?cb-uuid]
pstr (interfaces/pack packer wrapped-clj)]
pstr)))

(deftype EdnPacker []
Expand Down Expand Up @@ -688,9 +675,9 @@
handshake-ev
(if (nil? ?handshake-data) ; Micro optimization
[:chsk/handshake [uid nil]]
[:chsk/handshake [uid nil ?handshake-data]])]
(interfaces/sch-send! server-ch websocket?
(pack packer handshake-ev))))]
[:chsk/handshake [uid nil ?handshake-data]])
msg (pack packer handshake-ev)]
(interfaces/sch-send! server-ch websocket? msg)))]

(enc/cond

Expand Down Expand Up @@ -1095,6 +1082,7 @@
(aset "onerror" onerror-fn)
(aset "onmessage" onmessage-fn) ; Nb receives both push & cb evs!
;; Fires repeatedly (on each connection attempt) while server is down:
(aset "binaryType" "arraybuffer")
(aset "onclose" onclose-fn))
socket))))

Expand Down