Discord Voice Server IP Sniffer

# Find Discord Voice Server IPs in Python
# Based on the simple fact of:
### Discord RTC Session Auth packets have a TTL of 51 (Meaning when you join the call the packets TTL is 51)
### Discord RTC Alive (ACK) packets have a length of 305 (Blank Audio, Keeping alive conection between Client and Server)
from scapy.all import *
def sniffPackets(packet):
     if packet.haslayer(IP):
             pckt_src=packet[IP].src
             pckt_port=packet[UDP].sport
             pckt_ttl=packet[IP].ttl
             pckt_len=packet[UDP].len
             if pckt_ttl == 51:
                 print 'Discord Server IP %s : Port %s' % (pckt_src,pckt_port)
                 exit()
             if pckt_len == 305:
                 print 'Discord Server IP %s : Port %s' % (pckt_src,pckt_port)
                 exit()

def main():
     print 'Sniffing for Discord Voice IP'
     sniff(filter="udp",prn=sniffPackets)

main()