FEEDBACK-2 without option contains 12 bits of SN, not 8 bits
Bug #622128 reported by
Didier Barvaux
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | ||
---|---|---|---|---|---|---|
rohc | Status tracked in Rohc-main | |||||
1.2.x |
Won't Fix
|
Medium
|
Didier Barvaux | |||
1.3.x |
Won't Fix
|
Medium
|
Didier Barvaux | |||
Rohc-main |
Fix Released
|
Medium
|
Didier Barvaux |
Bug Description
According to section 5.7.6.1 entitled "Feedback formats for ROHC RTP" in RFC 3095, the FEEDBACK-2 packet format contains 12 bits of SN if no additional option is appended. According to section 5.7.6.6 entitled "The SN option" in RFC 3095, the FEEDBACK-2 packet may contain up to 20 bits of SN if a "SN option" is appended. However current code checks for SN values greater or equal than 255 (ie. 8 bits) to decide wether to append an SN option or not. This is not correct.
Many thanks to Ahmed Fathy that reported the problem in Question #120866.
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Version 1.2.2 is affected.