RC4 does not rekey per application layer fragment in TLS. The same key is used 
for the duration of a connection. 

Other protocols using RC4 do rekey per packet, eg WEP and WPA/TKIP. 

Cheers

Kenny

> On 16 Dec 2015, at 16:37, Ryan Carboni <rya...@gmail.com> wrote:
> 
> How often does TLS rekey anyway? I know RC4 rekeys per packet, but I've read 
> and searched a fair amount of documentation, and haven't found anything on 
> the subject. Perhaps I'm looking for the wrong terms or through the wrong 
> documents.
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