1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
// META: global=window,worker
// META: script=/common/get-host-info.sub.js
// META: script=resources/webtransport-test-helpers.sub.js
function validate_rtt_stats(stats) {
// The assumption below is that the RTT to localhost is under 5 seconds,
// which is fairly generous.
assert_greater_than(stats.minRtt, 0, "minRtt");
assert_less_than(stats.minRtt, 5 * 1000, "minRtt");
assert_greater_than(stats.smoothedRtt, 0, "smoothedRtt");
assert_less_than(stats.smoothedRtt, 5 * 1000, "smoothedRtt");
}
promise_test(async t => {
const wt = new WebTransport(webtransport_url('echo.py'));
await wt.ready;
const stats = await wt.getStats();
validate_rtt_stats(stats);
assert_equals(stats.datagrams.expiredOutgoing, 0);
assert_equals(stats.datagrams.droppedIncoming, 0);
assert_equals(stats.datagrams.lostOutgoing, 0);
}, "WebTransport client should be able to provide stats after connection has been established");
promise_test(async t => {
const wt = new WebTransport(webtransport_url('echo.py'));
await wt.ready;
wt.close();
const stats = await wt.getStats();
validate_rtt_stats(stats);
}, "WebTransport client should be able to provide stats after connection has been closed");
promise_test(async t => {
const wt = new WebTransport(webtransport_url('echo.py'));
await wt.ready;
const statsPromise = wt.getStats();
wt.close();
const stats = await statsPromise;
validate_rtt_stats(stats);
}, "WebTransport client should be able to provide stats requested right before connection has been closed");
promise_test(async t => {
const wt = new WebTransport(webtransport_url('echo.py'));
const stats = await wt.getStats();
validate_rtt_stats(stats);
}, "WebTransport client should be able to provide valid stats when requested before connection established");
promise_test(async t => {
const wt = new WebTransport("https://webtransport.invalid/");
wt.ready.catch(e => {});
wt.closed.catch(e => {});
const error = await wt.getStats().catch(e => e);
assert_equals(error.code, DOMException.INVALID_STATE_ERR);
const error2 = await wt.getStats().catch(e => e);
assert_equals(error2.code, DOMException.INVALID_STATE_ERR);
}, "WebTransport client should throw an error when stats are requested for a failed connection");
promise_test(async t => {
const wt = new WebTransport(webtransport_url('echo.py'));
await wt.ready;
const stats1 = wt.getStats();
const stats2 = wt.getStats();
assert_true(stats1 != stats2, "different promise returned for different getStats() calls");
validate_rtt_stats(await stats1);
validate_rtt_stats(await stats2);
}, "WebTransport client should be able to handle multiple concurrent stats requests");
promise_test(async t => {
const wt = new WebTransport(webtransport_url('echo.py'));
await wt.ready;
const stats1 = await wt.getStats();
validate_rtt_stats(stats1);
const stats2 = await wt.getStats();
validate_rtt_stats(stats2);
}, "WebTransport client should be able to handle multiple sequential stats requests");
promise_test(async t => {
const wt = new WebTransport(webtransport_url('echo.py'));
await wt.ready;
const numDatagrams = 64;
wt.datagrams.incomingHighWaterMark = 4;
const writer = wt.datagrams.writable.getWriter();
const encoder = new TextEncoder();
const promises = [];
while (promises.length < numDatagrams) {
const token = promises.length.toString();
promises.push(writer.write(encoder.encode(token)));
}
await Promise.all(promises);
const maxAttempts = 40;
let stats;
for (let i = 0; i < maxAttempts; i++) {
wait(50);
stats = await wt.getStats();
if (stats.datagrams.droppedIncoming > 0) {
break;
}
}
assert_greater_than(stats.datagrams.droppedIncoming, 0);
assert_less_than_equal(stats.datagrams.droppedIncoming,
numDatagrams - wt.datagrams.incomingHighWaterMark);
}, "WebTransport client should be able to provide droppedIncoming values for datagrams");
|
