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Capture data between terminal creation and connected to terminal in demo #4194

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merged 4 commits into from
Oct 15, 2022

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silamon
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@silamon silamon commented Oct 9, 2022

When I opened the demo terminal, the first line was missing. The terminal is functioning whatsoever. Looks like the terminal first line is sent before the terminal frontend is connected. Thanks to ws.send(logs[term.pid]); that line is sent to the terminal frontend when the terminal gets connected.

This commit introducing this: 193d305
This reverts it but keeps the higher timeout.

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Thanks! I saw this but had no idea why it was happening.

demo/server.js Outdated
Comment on lines 58 to 61
logs[term.pid] = '';
term.on('data', function(data) {
logs[term.pid] += data;
});
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Can we dispose of this listener once the terminal is connected? So after right that ws.send call? That will give us the best of both worlds.

We could then rename logs to something more descriptive to prevent this accident in the future, like unsentOutput?

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Oh well - yeah I removed it because it is a nuisance during perf measuring (backend constantly dies after testing a serious amount of data) - and I wasnt aware of the race condition (never happened for me). I think removing the aggregation buffer once the connection was successful would give us both advantages.

@Tyriar Tyriar added this to the 5.1.0 milestone Oct 9, 2022
@silamon silamon changed the title Adds logs again in server.js Capture data between terminal creation and connected to terminal in demo Oct 15, 2022
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Thanks 😃

@Tyriar Tyriar merged commit 869ce3a into xtermjs:master Oct 15, 2022
@silamon silamon deleted the fixmissingline branch October 16, 2022 09:52
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3 participants