OpenEuphoria

Re: Server-Sent Events

• Posted by ghaberek (admin) May 08, 2017
• 3606 views

--******************************************** 
--*      function test_progress()            * 
--******************************************** 
function test_progress() 
--puts(1,"Cache-Control: no-cache") -- This header would prevent the function from working. 
puts(1,"Content-Type: text/event-stream\n\n") 
for i = 1 to 100 do 
		sleep(0.1) 
		puts(1, sprintf("data: %d \n\n", i)) -- must have the two newlines 
		flush(1) 
end for 
puts(1, "Status: 415 OK") 
return {"Finished test"} 
end function 

I think the problem is that you're not ending your Cache-Control header with the expected "\r\n" terminator.

So this code:

puts(1,"Cache-Control: no-cache") 
puts(1,"Content-Type: text/event-stream\n\n") 

Will output this text, which is incorrect:

Cache-Control: no-cacheContent-Type: text/event-stream\n\n 

The correct code would look like this:

puts(1,"Cache-Control: no-cache\r\n") 
puts(1,"Content-Type: text/event-stream\r\n") 
puts(1,"\r\n") 

And the output looks like this:

Cache-Control: no-cache\r\n 
Content-Type: text/event-stream\r\n 
\r\n 

See: http://stackoverflow.com/a/5757349/2300395

-Greg