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fix: close leaked file descriptors on mode switch (#169)

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SSE EventSource connections for AIS, ACARS, VDL2, and radiosonde were
not closed when switching modes, causing fd exhaustion after repeated
switches. Also fixes socket leaks on exception paths in AIS/ADS-B
stream parsers, closes subprocess pipes in safe_terminate/cleanup, and
caches skyfield timescale at module level to avoid per-request fd churn.

Closes #169

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Smittix
2026-03-02 13:38:21 +00:00
parent ff9961b846
commit 8379f42ec3
10 changed files with 99 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
templates/partials/modes/acars.html
View File

@@ -254,7 +254,9 @@
acarsMainEventSource.onerror = function() {
setTimeout(() => {
if (document.getElementById('stopAcarsBtn').style.display === 'block') {
const panel = document.getElementById('acarsMode');
if (panel && panel.classList.contains('active') &&
document.getElementById('stopAcarsBtn').style.display === 'block') {
startAcarsMainSSE();
}
}, 2000);

4
templates/partials/modes/ais.html
View File

@@ -164,7 +164,9 @@
aisEventSource.onerror = function() {
setTimeout(() => {
if (document.getElementById('stopAisBtn').style.display === 'block') {
const panel = document.getElementById('aisMode');
if (panel && panel.classList.contains('active') &&
document.getElementById('stopAisBtn').style.display === 'block') {
startAisSSE();
}
}, 2000);

4
templates/partials/modes/radiosonde.html
View File

@@ -220,7 +220,9 @@
radiosondeEventSource.onerror = function() {
setTimeout(() => {
if (document.getElementById('stopRadiosondeBtn').style.display === 'block') {
const panel = document.getElementById('radiosondeMode');
if (panel && panel.classList.contains('active') &&
document.getElementById('stopRadiosondeBtn').style.display === 'block') {
startRadiosondeSSE();
}
}, 2000);

56
templates/partials/modes/vdl2.html
View File

@@ -169,32 +169,32 @@
.catch(err => alert('Error: ' + err.message));
}
function stopVdl2Mode() {
fetch('/vdl2/stop', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ source: 'vdl2_mode' })
})
.then(async (r) => {
const text = await r.text();
const data = text ? JSON.parse(text) : {};
if (!r.ok || (data.status !== 'stopped' && data.status !== 'success')) {
throw new Error(data.message || `HTTP ${r.status}`);
}
return data;
})
.then(() => {
document.getElementById('startVdl2Btn').style.display = 'block';
document.getElementById('stopVdl2Btn').style.display = 'none';
document.getElementById('vdl2StatusText').textContent = 'Standby';
document.getElementById('vdl2StatusText').style.color = 'var(--accent-yellow)';
if (vdl2MainEventSource) {
vdl2MainEventSource.close();
vdl2MainEventSource = null;
}
})
.catch(err => alert('Failed to stop VDL2: ' + err.message));
}
function stopVdl2Mode() {
fetch('/vdl2/stop', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ source: 'vdl2_mode' })
})
.then(async (r) => {
const text = await r.text();
const data = text ? JSON.parse(text) : {};
if (!r.ok || (data.status !== 'stopped' && data.status !== 'success')) {
throw new Error(data.message || `HTTP ${r.status}`);
}
return data;
})
.then(() => {
document.getElementById('startVdl2Btn').style.display = 'block';
document.getElementById('stopVdl2Btn').style.display = 'none';
document.getElementById('vdl2StatusText').textContent = 'Standby';
document.getElementById('vdl2StatusText').style.color = 'var(--accent-yellow)';
if (vdl2MainEventSource) {
vdl2MainEventSource.close();
vdl2MainEventSource = null;
}
})
.catch(err => alert('Failed to stop VDL2: ' + err.message));
}
function startVdl2MainSSE() {
if (vdl2MainEventSource) vdl2MainEventSource.close();
@@ -212,7 +212,9 @@
vdl2MainEventSource.onerror = function() {
setTimeout(() => {
if (document.getElementById('stopVdl2Btn').style.display === 'block') {
const panel = document.getElementById('vdl2Mode');
if (panel && panel.classList.contains('active') &&
document.getElementById('stopVdl2Btn').style.display === 'block') {
startVdl2MainSSE();
}
}, 2000);