If we send two messages over the same html5 websocket a split millisecond apart from each other,
Is it theoretically possible for the messages to arrive in a different order than they were sent?
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If we send two messages over the same html5 websocket a split millisecond apart from each other,
Is it theoretically possible for the messages to arrive in a different order than they were sent?
Short answer: No.
Long answer:
WebSocket runs over TCP, so on that level @EJP ‘s answer applies. WebSocket can be “intercepted” by intermediaries (like WS proxies): those are allowed to reorder WebSocket control frames (i.e. WS pings/pongs), but not message frames when no WebSocket extension is in place. If there is a neogiated extension in place that in principle allows reordering, then an intermediary may only do so if it understands the extension and the reordering rules that apply.