[lwip-devel] [task #7421] Implement SO_RCVBUF

[Simon Goldschmidt]

Follow-up Comment #4, task #7421 (project lwip):

Wow, such a simple patch, why didn't we include that earlier?

Some comments:
- we should provide a function for access to recv_bufsize for netconn API
apps
- we should really work on protecting recv_avail, or am I wrong?
- maybe we should check linux or other stacks how they handle SO_RCVBUF for
TCP sockets...

Other than that: great work! (Only I would combine the if statements that are
the same for #if LWIP_SO_RCVBUF and #else in api_msg.c).

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