commit 6174173f81e10e400b55d4e6f6d94608dc4174b0
author Victor Boivie <boivie@webrtc.org> Mon May 10 15:22:42 2021
committer WebRTC LUCI CQ <webrtc-scoped@luci-project-accounts.iam.gserviceaccount.com> Wed May 12 15:17:17 2021
tree 8b6ec8c9aded6e2ee172b5819ac0689e718ae024
parent a30362cc75dca6cba9cc1f12e553f4e89bc0de5b

sctp: dcsctp: Print SCTP packets to logs

When verbose logs are enabled, SCTP packets will be dumped to debug
logs, allowing text2pcap to be used to generate PCAP files.

First start Chrome with verbose logs, and write those to file:

  /path/to/chrome --enable-logging=stderr --v=4 2> out.log

Then extract the SCTP_PACKET traces and run text2pcap:

  grep SCTP_PACKET out.log > sctp.log

  text2pcap -n -i 132 -D -t '%H:%M:%S.' sctp.log sctp.pcapng

You may have to cut away more from the beginning if the debug logs
contain additional timestamps and more, e.g. like:

  grep SCTP_PACKET out.log | cut -d ' ' -f 2- > sctp.log

Note that if there are multiple RTCPeerConnection objects created, each
will print out their packets to log, so to filter for a specific one:

  grep "SCTP_PACKET DcSctpTransport0" out.log > sctp.log

Bug: webrtc:12614
Change-Id: Ibbceaf33719d09e7606247cb0496ddd827ea58bb
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/218200
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33999}