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test: assume priv ports start at 1024 if it can't be changed
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An update to test/parallel/test-cluster-bind-privileged-port.js
checks the lowest privileged port to ensure 42 is privileged
This only works on kernels > 4.1. On older kernels, this is
locked at 1024 so the check is not needed.

Fixes: #45838
PR-URL: #46536
Reviewed-By: Luigi Pinca <[email protected]>
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KrayzeeKev authored and targos committed Mar 14, 2023
1 parent fb1ac98 commit db2ace1
Showing 1 changed file with 8 additions and 3 deletions.
11 changes: 8 additions & 3 deletions test/parallel/test-cluster-bind-privileged-port.js
Original file line number Diff line number Diff line change
Expand Up @@ -27,9 +27,14 @@ const net = require('net');
const { readFileSync } = require('fs');

if (common.isLinux) {
const unprivilegedPortStart = parseInt(readFileSync('/proc/sys/net/ipv4/ip_unprivileged_port_start'));
if (unprivilegedPortStart <= 42) {
common.skip('Port 42 is unprivileged');
try {
const unprivilegedPortStart = parseInt(readFileSync('/proc/sys/net/ipv4/ip_unprivileged_port_start'));
if (unprivilegedPortStart <= 42) {
common.skip('Port 42 is unprivileged');
}
} catch {
// Do nothing, feature doesn't exist, minimum is 1024 so 42 is usable.
// Continue...
}
}

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