Setting output cache looses HTTP-header content-type override

[eluser]alphabase[/eluser]
Hi,

I need to set my content-type through the output class, since my HTTP server does not do this automatically and GTmetrix requires this for speed optimalisation.

So I've added this just before loading my views:

Code:

$this->output->set_header('Content-Type: text/html; charset=UTF-8');

That seems reasonable, and actually also works fluently.

Now I also wish to use the output caching, so I've added also before loading my views:

Code:

$this->output->cache(3600);

But this seems to override my HTTP-header overrides, giving me the response header:

Content-Type:text/html

Instead of:

Content-Type:text/html; charset=UTF-8

I've also tried adding the set_header to my controller's construct function, but this does not work.

Any idea how to fix this?