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[PortManager] Prefer ss over netstat on Linux (#91)

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ss is a modern alternative to netstat. The flags we use and the way we
parse the output are compatible with netstat. Since netstat is no
longer installed on some Linux distributions, prefer ss, but fall back
to netstat if "which ss" fails.

Also tweaks some logging.

Fixes #65
This commit is contained in:
Lutz Justen
2023-02-03 11:33:07 +01:00
committed by GitHub
parent 185c2ee19b
commit aab0b7ef33
5 changed files with 55 additions and 21 deletions
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common/port_manager_win.cc
+3 -1
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@@ -43,10 +43,12 @@ const char* GetNetstatCommand(ArchType arch_type) {
}
if (IsLinuxArchType(arch_type)) {
// Prefer ss over netstat. The flags out output are compatible.
// --numeric to get numerical addresses.
// --listening to get only listening sockets.
// --tcp to get only TCP connections.
return "netstat --numeric --listening --tcp";
return "which ss2 && ss --numeric --listening --tcp || netstat "
"--numeric --listening --tcp";
}
assert(!kErrorArchTypeUnhandled);