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Editorial Team
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Asked: 2026-05-25T11:53:29+00:00

using <cfcontent type=text/event-stream> in ColdFusion, the non-English characters are displayed as question marks: ???????123123????

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using <cfcontent type="text/event-stream"> in ColdFusion, the non-English characters are displayed as question marks: ???????123123???? ???, but the rest of the page can display non-English characters just fine.

I followed this tutuorial and tried

<cfheader name="Content-Type" value="text/event-stream; charset=utf-8">

and also

<cfcontent type="text/event-stream; charset=utf-8">

Both of them do not work with Chrome (doesn’t pick up, developer tool reported “pending” with no reconnection.

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1 Answer

  1. Editorial Team

    Just tried the following code and it’s working fine (showing the correct characters in Chrome’s console)…

    testHTML5ServerSent events

        <HTML>

    <HEAD>
        <script language="javascript">
        if (!!window.EventSource) {
            var source = new EventSource('sendServerSentEvents.cfm');           
            source.addEventListener('message', function(e) { 
                                                    console.log(e.data);
                                                }, false);

source.addEventListener('open', function(e) {
  // Connection was opened.
}, false);

source.addEventListener('error', function(e) {
  if (e.eventPhase == EventSource.CLOSED) {
    // Connection was closed.
  }
}, false);

        } else {
            alert('not supported');// Result to xhr polling :(
        }


        </script>
    </HEAD>

    <BODY>

    </BODY>

</HTML>

    sendServerSentEvents.cfm

        <cfcontent type="text/event-stream; charset=utf-8" >
data: éêtititiçà
</cfcontent>
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