756544 - First cut at generic transport abstraction and DTLS layer

Status: RESOLVED FIXED

(Core :: WebRTC: Networking, defect)

Description

[Eric Rescorla (:ekr)]

Attachment: Patch

This patch includes:

- A generic C++ layered I/O abstraction suitable for use with datagram transport
- Implementations of specific layers for
  + PRSock
  + DTLS (using NSS)
  + Shim implementations for logging, loopback, and lossy network simulation
- Unit tests for the above based on gtest
- A number of other utilities I wrote to facilitate this stuff.

Note that I have generally avoided using lubxul constructs where possible, but because this code depends on some of the libxul/XPCOM services, I haven't avoided them entirely, in particular, I use:

nsSocketTransportService (via do_GetService) nsTimer (via do_CreateInstance) and nsCOMPtr. When we plug this into firefox instead of in the test harness, we will need to make those available. My thought here is just to have a function table of these global functions that gets exported in gkmedias.dll

Comment 1

[Eric Rescorla (:ekr)]

Note: this code is being developed in alder/ekr_transport_branch