Skip to content

Expose pc.sctp transport in have-(local|remote)-offer #3094

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
youennf merged 3 commits into from
Mar 12, 2026
Merged

Expose pc.sctp transport in have-(local|remote)-offer #3094

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
3 commits
Select commit Hold shift + click to select a range
dc1b130
Expose pc.sctp transport in have-(local|remote)-offer
jan-ivar Mar 4, 2026
c010385
Disable markup validation
dontcallmedom Mar 4, 2026
60f3429
Add [[LastStableStateSctpTransport]] and steps for rollback
jan-ivar Mar 5, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 2 additions & 0 deletions .github/workflows/auto-publish.yml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,8 @@ jobs:
W3C_WG_DECISION_URL: "https://lists.w3.org/Archives/Public/public-webrtc/2016Mar/0031.html"
W3C_NOTIFICATIONS_CC: "dom@w3.org"
VALIDATE_LINKS: false
# ReSpec currently generating ARIA-invalid markup
VALIDATE_MARKUP: false
# pending https://github.com/w3c/spec-prod/pull/155
VALIDATE_WEBIDL: false
SOURCE: webrtc.html
Expand Down
30 changes: 30 additions & 0 deletions amendments.json
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -688,5 +688,35 @@
],
"testUpdates": "already-tested"
}
],
"offer-sctp-transport": [
{
"description": "Expose pc.sctp transport in have-(local|remote)-offer",
"type": "correction",
"status": "candidate",
"difftype": "append",
"id": 58,
"pr": 3094,
"tests": [
"webrtc/RTCSctpTransport-events.html",
"webrtc/RTCSctpTransport-maxChannels.html"
],
"testUpdates": "already-tested"
}
],
"idl-sctp-transport": [
{
"description": "Expose pc.sctp transport in have-(local|remote)-offer",
"type": "correction",
"status": "candidate",
"difftype": "modify",
"id": 58,
"pr": 3094,
"tests": [
"webrtc/RTCSctpTransport-events.html",
"webrtc/RTCSctpTransport-maxChannels.html"
],
"testUpdates": "already-tested"
}
]
}
2 changes: 1 addition & 1 deletion base-rec.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13534,7 +13534,7 @@ <h5 id="dictionary-rtcicecandidatepair-members">
</li>
</ol>
</section>
<div>
<div id="idl-sctp-transport">
<pre class="idl has-tests def" data-tests="idlharness.https.window.js" id="webidl-1410933428"><span class="idlHeader"><a class="self-link" href="#webidl-1410933428">WebIDL</a></span><code><span data-idl="" class="idlInterface" id="idl-def-rtcsctptransport" data-title="RTCSctpTransport">[<span class="extAttr"><a data-xref-type="extended-attribute">Exposed</a>=Window</span>]
interface <a class="internalDFN idlID" data-link-for="" data-link-type="interface" href="#dom-rtcsctptransport" id="ref-for-dom-rtcsctptransport-10"><code>RTCSctpTransport</code></a> : <span class="idlSuperclass"><a data-link-type="idl" data-xref-type="_IDL_">EventTarget</a></span> {<span data-idl="" class="idlAttribute" id="idl-def-rtcsctptransport-transport" data-title="transport" data-dfn-for="RTCSctpTransport">
readonly attribute<span class="idlType"> <a data-link-type="idl" data-xref-type="_IDL_" href="#dom-rtcdtlstransport" class="internalDFN" id="ref-for-dom-rtcdtlstransport-30"><code>RTCDtlsTransport</code></a></span> <a class="internalDFN idlName" data-link-for="RTCSctpTransport" data-link-type="attribute" href="#dom-rtcsctptransport-transport" id="ref-for-dom-rtcsctptransport-transport-1"><code>transport</code></a>;</span><span data-idl="" class="idlAttribute" id="idl-def-rtcsctptransport-state" data-title="state" data-dfn-for="RTCSctpTransport">
Expand Down
148 changes: 93 additions & 55 deletions webrtc.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1312,6 +1312,13 @@ <h4>
initialized to <code>null</code>.
</p>
</li>
<li>
<p>
Let <var>connection</var> have an
<dfn data-dfn-for="RTCPeerConnection" class="export">[[\LastStableStateSctpTransport]]</dfn> internal slot,
initialized to <code>null</code>.
</p>
</li>
<li>
<p>
Let <var>connection</var> have a
Expand Down Expand Up @@ -1819,56 +1826,70 @@ <h4>
If <var>description</var> is of type
{{RTCSdpType/"offer"}} and
<var>connection</var>.{{RTCPeerConnection/[[SignalingState]]}}
is {{RTCSignalingState/"stable"}} then for each
<var>transceiver</var> in <var>connection</var>'s [=
set of transceivers =], run the following steps:
is {{RTCSignalingState/"stable"}}, then run the following steps:
</p>
<ol>
<li>
<p>
Set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[LastStableStateSenderTransport]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[SenderTransport]]}}.
</p>
</li>
<li id="rollback-ridless">
<p>
If
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[SendEncodings]]}}.length
is `1` and the lone encoding [=map/contains=] no {{RTCRtpCodingParameters/rid}} member,
then set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[LastStableRidlessSendEncodings]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[SendEncodings]]}};
Otherwise, set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[LastStableRidlessSendEncodings]]}}
to `null`.
</p>
</li>
<li>
<p>
Set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[LastStableStateReceiverTransport]]}}
<var>connection</var>.{{RTCPeerConnection/[[LastStableStateSctpTransport]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[ReceiverTransport]]}}.
</p>
</li>
<li>
<p>
Set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[LastStableStateAssociatedRemoteMediaStreams]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[AssociatedRemoteMediaStreams]]}}.
<var>connection</var>.{{RTCPeerConnection/[[SctpTransport]]}}.
</p>
</li>
<li>
<p>
Set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[LastStableStateReceiveCodecs]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[ReceiveCodecs]]}}.
For each <var>transceiver</var> in <var>connection</var>'s
[= set of transceivers =], run the following steps:
</p>
<ol>
<li>
<p>
Set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[LastStableStateSenderTransport]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[SenderTransport]]}}.
</p>
</li>
<li id="rollback-ridless">
<p>
If
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[SendEncodings]]}}.length
is `1` and the lone encoding [=map/contains=] no {{RTCRtpCodingParameters/rid}} member,
then set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[LastStableRidlessSendEncodings]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[SendEncodings]]}};
Otherwise, set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Sender]]}}.{{RTCRtpSender/[[LastStableRidlessSendEncodings]]}}
to `null`.
</p>
</li>
<li>
<p>
Set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[LastStableStateReceiverTransport]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[ReceiverTransport]]}}.
</p>
</li>
<li>
<p>
Set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[LastStableStateAssociatedRemoteMediaStreams]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[AssociatedRemoteMediaStreams]]}}.
</p>
</li>
<li>
<p>
Set
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[LastStableStateReceiveCodecs]]}}
to
<var>transceiver</var>.{{RTCRtpTransceiver/[[Receiver]]}}.{{RTCRtpReceiver/[[ReceiveCodecs]]}}.
</p>
</li>
</ol>
</li>
</ol>
</li>
Expand Down Expand Up @@ -2011,13 +2032,29 @@ <h4>
</li>
</ol>
</li>
<li id="offer-sctp-transport" data-tests=
"RTCPeerConnection-createDataChannel.html,RTCSctpTransport-constructor.html,RTCSctpTransport-events.html,RTCSctpTransport-maxChannels.html">
<p>
If <var>description</var> is of type
{{RTCSdpType/"offer"}}, and it describes an
SCTP association as defined in [[RFC8841]]
Section 10.2, and
<var>connection</var>.{{RTCPeerConnection/[[SctpTransport]]}}
is <code>null</code>, set
<var>connection</var>.{{RTCPeerConnection/[[SctpTransport]]}}
to the result of
[= create an RTCSctpTransport|creating an RTCSctpTransport =]
with an initial state of
{{RTCSctpTransportState/"connecting"}}.
</p>
</li>
<li>
<p>
If <var>description</var> is of type
{{RTCSdpType/"answer"}}, and it initiates the closure
of an existing SCTP association, as defined in
[[RFC8841]], Sections 10.3 and 10.4, set the value
of <var>connection</var>.{{RTCPeerConnection/[[SctpTransport]]}} to
[[RFC8841]], Sections 10.3 and 10.4, set
<var>connection</var>.{{RTCPeerConnection/[[SctpTransport]]}} to
<code>null</code>.
</p>
</li>
Expand All @@ -2042,14 +2079,8 @@ <h4>
If <var>description</var> initiates the
establishment of a new SCTP association, as
defined in [[RFC8841]], Sections 10.3 and 10.4,
[= create an RTCSctpTransport =] with an initial
state of {{RTCSctpTransportState/"connecting"}}
and assign the result to the
{{RTCPeerConnection/[[SctpTransport]]}} slot. Otherwise, if an
SCTP association is established, but the
<code class="sdp">max-message-size</code> SDP
attribute is updated, [= update the data max
message size =] of
or an SCTP association already exists,
[= update the data max message size =] of
<var>connection</var>.{{RTCPeerConnection/[[SctpTransport]]}}.
</p>
</li>
Expand Down Expand Up @@ -2638,6 +2669,14 @@ <h4>
whichever one is not <code>null</code>.
</p>
</li>
<li>
<p>
Set
<var>connection</var>.{{RTCPeerConnection/[[SctpTransport]]}}
to
<var>connection</var>.{{RTCPeerConnection/[[LastStableStateSctpTransport]]}}.
</p>
</li>
<li>
<p>
For each <var>transceiver</var> in the
Expand Down Expand Up @@ -13761,9 +13800,8 @@ <h4 id="sctp-transport-create">
<li>
<p>
Let <var>transport</var> have a
<dfn data-dfn-for="RTCSctpTransport">[[\MaxMessageSize]]</dfn> internal slot and run the
steps labeled [= update the data max message size =] to
initialize it.
<dfn data-dfn-for="RTCSctpTransport">[[\MaxMessageSize]]</dfn> internal slot initialized to
<code>null</code>.
</p>
</li>
<li data-tests="RTCSctpTransport-maxChannels.html">
Expand Down Expand Up @@ -13904,12 +13942,12 @@ <h4 id="sctp-transport-connected">
</li>
</ol>
</section>
<div>
<div id="idl-sctp-transport">
<pre class="idl" data-tests="idlharness.https.window.js">[Exposed=Window]
interface RTCSctpTransport : EventTarget {
readonly attribute RTCDtlsTransport transport;
readonly attribute RTCSctpTransportState state;
readonly attribute unrestricted double maxMessageSize;
readonly attribute unrestricted double? maxMessageSize;
readonly attribute unsigned short? maxChannels;
attribute EventHandler onstatechange;
};</pre>
Expand Down Expand Up @@ -13944,7 +13982,7 @@ <h2>
</dd>
<dt data-tests="RTCSctpTransport-constructor.html">
<dfn data-idl="">maxMessageSize</dfn> of type <span class=
"idlAttrType">unrestricted double</span>, readonly
"idlAttrType">unrestricted double</span>, readonly, nullable
</dt>
<dd>
<p>
Expand Down