[Curiosity]

Is there any application for Intel Mac which will allow me to view HTTP headers being exchanged between my browser and a web server?

[zro]

HTTP Scoop ~ The HTTP Sniffer for Mac OS X ~ Welcome

Not universal. Never tried it, either.

[Curiosity]

Thanks for your trouble, but Scoop does not seem to do anything on my Mac. I guess I have to wait for the universal version.

[red rocket]

There's a live http headers extension available for Firefox 1.5.

[Curiosity]

Originally Posted by red rocket 

There's a live http headers extension available for Firefox 1.5.

But I am using Firefox 2.0, and that extension seems not to work with it.

[Turias]

You can view the response headers with the Web Developer Toolbar firefox extension. That has been updated to work with 2.0.

[Curiosity]

Will that toolbar also allow me to view the request headers? They can be useful for diagnosing problems as well.

[red rocket]

Originally Posted by Curiosity

But I am using Firefox 2.0, and that extension seems not to work with it.

That's why I explicitly stated that it's for FF 1.5.

[Turias]

Originally Posted by Curiosity 

Will that toolbar also allow me to view the request headers? They can be useful for diagnosing problems as well.

Sadly, no. If you want a slightly more complex application that will definitely let you see all of the headers going both ways, you may want to check out ethereal. It has a learning curve, but it is also very powerful and useful once you get the hang of it.