For instance header compression using a shared prefix dictionary saves only a handful (~100 bytes) over TLS compression -- worthless, not to mention it's already had several versions of the prefix dictionary.
Spdy developers didn't even test against HTTP tunneling, which in practice as seen in current Firefox and Opera works just as well. The 'head of line blocking' is not a big deal in practice.
For instance header compression using a shared prefix dictionary saves only a handful (~100 bytes) over TLS compression -- worthless, not to mention it's already had several versions of the prefix dictionary.
Spdy developers didn't even test against HTTP tunneling, which in practice as seen in current Firefox and Opera works just as well. The 'head of line blocking' is not a big deal in practice.