viewing HTTP header in tcpdump

Hi guys, is it possible to view the content of http headers in a tcpdump trace file? I tried: tcpdump -i /Common/ -vvvs 1024 -l -A host example.com It looks like as the device is tracing packets, but when I download them the file is empty or broken. Anyone an idea on this? I am using Version 11.3 HF8 Cheers, Merlin