[Turnserver-devel] Bad padding in 401 Error Reason attribute

[Sébastien G. <sgi...@gm...>]

It seems that padding apply to the reason phrase of the 401 ErrorCode is
not accurate

When doing an ALLOCATE request, turnserver returns me an ERROR class
message of type 401 with a reason phrase "Unauthorized" all is right as
described in TURN RFC5766.

In details, the response contains the following informations :

Class    00 09 (ERROR-CODE)
Length   00 14 (20 bytes)

Reserved 00 00
Class    04
Code     01

Reason   55 6e 61 75 . 74 68 6f 72 . 69 7a 65 64 . 00 00 00 00
          U  n  a  u    t  h  o  r    i  z  e  d


Everything is ok except the 00 00 00 00 padding at the end of the reason
phrase which is not needed.
Without it the length would be 16 bytes which is already a 32bits rounded
value

You can saw that behavior in Wireshark.