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TCP_TYPE_KEEP_ALIVE

Hi everyone,

I found on tcp_get_socket library reference page list of all TCP socket types. Among them, there is a TCP_TYPE_KEEP_ALIVE.

I want to send keep-alive packets instead of connection disconnect but TCP_TYPE_KEEP_ALIVE is undefined in RTL.h.

I'm using MDK-ARM 4.14 (RL-ARM 4.12).

Is TCP_KEEP_ALIVE defined in newest release of MDK-ARM?