Commit graph

11 commits

Author SHA1 Message Date
Victor Boivie
82cbbcc179 dcsctp: Convert use of TimeMs to webrtc::Timestamp
While this is a fairly big CL, it's fairly straightforward. It replaces
uses of TimeMs with webrtc::Timestamp, and additionally does some
cleanup of DurationMs to webrtc::TimeDelta that are now easier to do.

Bug: webrtc:15593
Change-Id: Id0e3edcba0533e0e8df3358b1778b6995c344243
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/326560
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41138}
2023-11-12 21:12:29 +00:00
Victor Boivie
4397482d71 dcsctp: Convert timers to rtc::TimeDelta
With this, the code base should be mostly converted from using
DurationMs to rtc::TimeDelta, and the work can continue to replace
TimeMs with rtc::Timestamp.

Bug: webrtc:15593
Change-Id: I083fee6eccb173efc0232bb8d46e2554a5fbee5b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/326161
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41101}
2023-11-07 21:42:15 +00:00
Victor Boivie
be04c98d64 dcsctp: Migrate non-Timer related to rtc::TimeDelta
This does the bulk of the remaining refactoring, except timers since
they are an even bigger part - but more isolated.

Bug: webrtc:15593
Change-Id: I7afa349e2119be7592797ee6b3b198e6de4f697a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/326160
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41090}
2023-11-06 19:55:22 +00:00
Victor Boivie
b78e6a9305 dcsctp: Use TimeDelta in TX path
This commit replaces the internal use of DurationMs, with millisecond
precision, to webrtc::TimeDelta, which uses microsecond precision.

This is just a refactoring. The only change to the public API is
convenience methods to convert between DurationMs and webrtc::TimeDelta.

Bug: webrtc:15593
Change-Id: Ida861bf585c716be5f898d0e7ef98da2c15268b7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/325402
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41062}
2023-11-01 16:17:13 +00:00
Victor Boivie
51b93a5417 dcsctp: Simplify interface for unchanged timeout
When a timer expires, it can optionally return a new expiration value.
Clearly, that value can't be zero, as that would make it expire
immediately again.

To simplify the interface, and make it easier to migrate to
rtc::TimeDelta, change it from an optional value to an always-present
value that - if zero - means that the expiration time should be
unchanged.

This is just an internal refactoring, and not part of any external
interface.

Bug: webrtc:15593
Change-Id: I6e7010d2dbe774ccb260e14fd6b9861c319e2411
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/325281
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41045}
2023-10-31 09:44:39 +00:00
Victor Boivie
4fbf555989 dcsctp: Make use of log_prefix consistent
The log_prefix frequently used in dcSCTP is intended to be used
to separate logs from different sockets within the same log output,
typically in unit tests. Every log entry always has the file and
line, so it's not important to add more information to the log prefix
that indicates _where_ it's logged. So those have been removed.

Also, since log_prefix is a string (typically 32 bytes) and it's
never changing during the lifetime of the socket, pass and store it
as a absl::string_view to save memory.

Bug: None
Change-Id: I10466710ca6c2badfcd3adc5630426a90ca74204
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/274704
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#39571}
2023-03-15 22:15:05 +00:00
Victor Boivie
3179fb2931 dcsctp: Avoid integer overflow in HEARTBEAT-ACK v2
This is a follow-up to change 232904 that also validates that the
timestamp from the heartbeat ack isn't negative (which the fuzzer
managed to set it to).

Bug: chromium:1252515
Change-Id: Idaac570589dbdaaee67b7785f6232b60226e88e1
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/234582
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35168}
2021-10-08 11:06:11 +00:00
Victor Boivie
f75f9c2b29 dcsctp: Avoid integer overflow in HEARTBEAT-ACK
When a HEARTBEAT is sent out, the current timestamp is stored in the
parameter that will be returned by the HEARTBEAT-ACK. If the timestamp
from the HEARTBEAT-ACK would be from the future (either by jumping
clocks, bit errors, exploiting peer or a fuzzer), the measured RTT would
become really large, and when it was calculated, it would result in an
integer overflow; a wrapping subtraction.

This isn't a problem, as RetransmissionTimeout::ObserveRTT method would
discard measurements that were negative or too large, but it would
trigger an UBSAN violation.

Adding an additional check so that the subtraction doesn't ever wrap.

Bug: chromium:1252515
Change-Id: I1f97b1e773a4639b8193a528716ebd6a27fcb740
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/232904
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35095}
2021-09-27 10:52:46 +00:00
Victor Boivie
600bb8c79f dcsctp: Migrating to using absl::bind_front
It is now allowed in WebRTC, so let's use it.

Bug: webrtc:12943
Change-Id: I74a0f2fd9c1b9e7b5613ae1c592cf26842b8dddd
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/228564
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34768}
2021-08-16 11:51:27 +00:00
Victor Boivie
5429d71022 dcsctp: Allow heartbeats to be disabled
This is useful in tests and in scenarios where the connection is
monitored externally and the heartbeat monitoring would be of no use.

Bug: webrtc:12614
Change-Id: Ida4f4e2e40fc4d2aa0c27ae9431f434da4cc8313
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/220766
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34164}
2021-05-31 12:19:38 +00:00
Victor Boivie
b9bdf64b92 dcsctp: Add Heartbeat Handler
It's responsible for answering incoming Heartbeat Requests, and to
send requests itself when a connection is idle. When it receives
a response, it will measure the RTT and if it doesn't receive a response
in time, that will result in a TX error, which will eventually close
the connection.

Bug: webrtc:12614
Change-Id: I08371d9072ff0461f60e0a2f7696c0fd7ccb57c5
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/214129
Reviewed-by: Tommi <tommi@webrtc.org>
Commit-Queue: Victor Boivie <boivie@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33828}
2021-04-25 20:40:18 +00:00