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Which of the following is correct Content-Type header that a server side script should send for SSE in HTML5?

Which of the following is correct Content-Type header that a server side script should send for SSE in HTML5? Correct Answer Content-Type: text/event-stream

The correct answer is option 1.

Key Points

A Server-Sent Events (SSE) allow a web page to get updates for a server. To send event streams, use syntax:   Content-type: “Text/event_stream” 

Hence the correct answer is Content-Type: text/event-stream.

Additional Information

Server Side Script for SSE:

           A server-side script sends a Content-type header defining the type text/event-stream as follows.
print "Content-Type: text/event-stream\n\n";

      After setting Content-Type, the server-side script would send an Event: tag followed by event name. The following example would send Server-Time as event name terminated by a new line character.

print "Event: server-time\n";

Final step is to send event data using Data: tag which would be followed by integer of string value terminated by a new line character as follows −

$time = localtime();
print "Data: $time\n";

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