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Tip revision: 2eafc77a24f2d1b635a2c1c442056455e4b273e4 authored by Morten Stenshorne on 14 March 2018, 06:40:47 UTC
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Tip revision: 2eafc77
RTCPeerConnection-connectionState.html
<!doctype html>
<meta charset=utf-8>
<title>RTCPeerConnection.prototype.connectionState</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="RTCPeerConnection-helper.js"></script>
<script>
'use strict';
// Test is based on the following editor draft:
// https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.htm
// The following helper functions are called from RTCPeerConnection-helper.js:
// exchangeIceCandidates
// doSignalingHandshake
/*
4.3.2. Interface Definition
interface RTCPeerConnection : EventTarget {
...
readonly attribute RTCPeerConnectionState connectionState;
attribute EventHandler onconnectionstatechange;
};
4.4.3. RTCPeerConnectionState Enum
enum RTCPeerConnectionState {
"new",
"connecting",
"connected",
"disconnected",
"failed",
"closed"
};
5.5. RTCDtlsTransport Interface
interface RTCDtlsTransport {
readonly attribute RTCIceTransport transport;
readonly attribute RTCDtlsTransportState state;
...
};
enum RTCDtlsTransportState {
"new",
"connecting",
"connected",
"closed",
"failed"
};
5.6. RTCIceTransport Interface
interface RTCIceTransport {
readonly attribute RTCIceTransportState state;
...
};
enum RTCIceTransportState {
"new",
"checking",
"connected",
"completed",
"failed",
"disconnected",
"closed"
};
*/
/*
4.4.3. RTCPeerConnectionState Enum
new
Any of the RTCIceTransports or RTCDtlsTransports are in the new
state and none of the transports are in the connecting, checking,
failed or disconnected state, or all transports are in the closed state.
*/
test(t => {
const pc = new RTCPeerConnection();
assert_equals(pc.connectionState, 'new');
}, 'Initial connectionState should be new');
/*
4.4.3. RTCPeerConnectionState Enum
connected
All RTCIceTransports and RTCDtlsTransports are in the connected,
completed or closed state and at least of them is in the connected
or completed state.
5.5. RTCDtlsTransportState
connected
DTLS has completed negotiation of a secure connection.
5.6. RTCIceTransportState
connected
The RTCIceTransport has found a usable connection, but is still
checking other candidate pairs to see if there is a better connection.
It may also still be gathering and/or waiting for additional remote
candidates. If consent checks [RFC7675] fail on the connection in use,
and there are no other successful candidate pairs available, then the
state transitions to "checking" (if there are candidate pairs remaining
to be checked) or "disconnected" (if there are no candidate pairs to
check, but the peer is still gathering and/or waiting for additional
remote candidates).
completed
The RTCIceTransport has finished gathering, received an indication that
there are no more remote candidates, finished checking all candidate
pairs and found a connection. If consent checks [RFC7675] subsequently
fail on all successful candidate pairs, the state transitions to "failed".
*/
async_test(t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
const onConnectionStateChange = t.step_func(() => {
const { connectionState } = pc1;
if(connectionState === 'connected') {
const sctpTransport = pc1.sctp;
const dtlsTransport = sctpTransport.transport;
assert_equals(dtlsTransport.state, 'connected',
'Expect DTLS transport to be in connected state');
const iceTransport = dtlsTransport.transport
assert_true(iceTransport.state === 'connected' ||
iceTransport.state === 'completed',
'Expect ICE transport to be in connected or completed state');
t.done();
}
});
pc1.createDataChannel('test');
assert_equals(pc1.onconnectionstatechange, null,
'Expect connection to have connectionstatechange event');
pc1.addEventListener('connectionstatechange', onConnectionStateChange);
exchangeIceCandidates(pc1, pc2);
doSignalingHandshake(pc1, pc2);
}, 'connection with one data channel should eventually have connected connection state');
/*
TODO
4.4.3. RTCPeerConnectionState Enum
connecting
Any of the RTCIceTransports or RTCDtlsTransports are in the
connecting or checking state and none of them is in the failed state.
disconnected
Any of the RTCIceTransports or RTCDtlsTransports are in the disconnected
state and none of them are in the failed or connecting or checking state.
failed
Any of the RTCIceTransports or RTCDtlsTransports are in a failed state.
closed
The RTCPeerConnection object's [[isClosed]] slot is true.
5.5. RTCDtlsTransportState
new
DTLS has not started negotiating yet.
connecting
DTLS is in the process of negotiating a secure connection.
closed
The transport has been closed.
failed
The transport has failed as the result of an error (such as a failure
to validate the remote fingerprint).
5.6. RTCIceTransportState
new
The RTCIceTransport is gathering candidates and/or waiting for
remote candidates to be supplied, and has not yet started checking.
checking
The RTCIceTransport has received at least one remote candidate and
is checking candidate pairs and has either not yet found a connection
or consent checks [RFC7675] have failed on all previously successful
candidate pairs. In addition to checking, it may also still be gathering.
failed
The RTCIceTransport has finished gathering, received an indication that
there are no more remote candidates, finished checking all candidate pairs,
and all pairs have either failed connectivity checks or have lost consent.
disconnected
The ICE Agent has determined that connectivity is currently lost for this
RTCIceTransport . This is more aggressive than failed, and may trigger
intermittently (and resolve itself without action) on a flaky network.
The way this state is determined is implementation dependent.
Examples include:
Losing the network interface for the connection in use.
Repeatedly failing to receive a response to STUN requests.
Alternatively, the RTCIceTransport has finished checking all existing
candidates pairs and failed to find a connection (or consent checks
[RFC7675] once successful, have now failed), but it is still gathering
and/or waiting for additional remote candidates.
closed
The RTCIceTransport has shut down and is no longer responding to STUN requests.
*/
</script>
