net: tcp: Fix handling of keep-alive probes #93431
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Keep-alive probes have seq number set to SND.NXT - 1 and may or may not contain an octet of data. The latter case was not handled properly therefore add a special case when validating seq number to response to keep-alive probes. Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
Add test verifying that if keep-alive messages are exchanged, the connection remains alive. Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
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CC @shrek-wang |
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jukkar
approved these changes
Jul 21, 2025
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Fix processing of a received keep-alive probe and add a test case that the connection remains alive after a keep-alive exchange.
Fixes #93350