SIPp’s PCAP play feature can replay pre-recorded audio stream towards destination (see ). Doc mentions tcpdump and Wireshark as tools to record such RTP streams without further details.
Looking at SIPp 3.2 source archive, I found PCAP samples in a pcap/
directory. Sample pcap/g711a.pcap file includes RTP from 10.1.3.1:5000 to
1. How can you “forge” IPs and/or ports of a pcap file ?
2. When generating simultaneous calls from one source device to a single target device, do you need to have specific PCAP files (one specific for each call) with specific source port ?
3. How do you capture an RTP flux with thark or tcpdump ?