Ondřej Surý 04c81b55d2 Implement IP_LOCAL_PORT_RANGE socket option for Linux ... For Linux >= 6.8: Since 2023, Linux has introduced a change to the IP_LOCAL_PORT_RANGE socket option that eliminates the need for the random window shifting (implemented as a fallback in the next commit). By setting IP_LOCAL_PORT_RANGE option, we tell the kernel to use better approach to the source port selection. For Linux << 6.8: This implement selecting port by random shifting range leveraging the IP_LOCAL_PORT_RANGE socket option. The network manager is initialized with the ephemeral port range (on startup and on reconfig) and then for every outgoing TCP connection, we define a custom port range (1000 ports) and then randomly shift the custom range within the system range. This helps the kernel to reduce the search space to the custom window between <random_offset, random_offset + 1000>. Reference: https://blog.cloudflare.com/linux-transport-protocol-port-selection-performance/#kernel		2026-02-20 14:06:23 +01:00
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isc	Implement IP_LOCAL_PORT_RANGE socket option for Linux	2026-02-20 14:06:23 +01:00
.clang-format	Add separate .clang-format files for headers	2020-02-14 09:31:05 +01:00