geek_wannabe's profile - activity

Hello,

I'm interested how Wireshark decodes RTP packets (which criteria is used to separate them from UDP). I'm trying to create a RTP packet flow using scapy, I' entering all the information needed in RTP hrader:

while seq < 10:
  ip_layer = IP(src = "10.0.1.21", dst = "10.0.1.40")
  udp_layer = UDP(sport = 16998, dport = 17000)
  rtp_layer = RTP(version=2, padding=0, extension=0, marker=1, payload_type=8, sequence=seq, timestamp=10, sourcesync=0)
  packet = ip_layer/udp_layer/rtp_layer
  send(packet)
  seq = seq + 1
  time_s = time_s + 160

and still packets in wireshark are shown as UDP. I found an option in Preferences -> Protocols -> RTP "Payload Type for RFC2198" = 99 and wondered what 99 means (as didn't find any information on RFC document), maybe I need to add some kind of a special payload next to RTP header?.. Any help would be appreciated. Thanks in advance

Thanks, this worked perfectly!

How wireshark decodes RTP packets from UDP Hello, I'm interested how Wireshark decodes RTP packets (which criteria is u