Commits on Oct 11, 2024

1. allow setting buffer sizes on server_socket …

   We add two options to set the recv and send (SO_RCVBUF, ...) buffer
   sizes on a listening socket (server_socket). This is mostly useful to
   propagate said sizes to all sockets returned by accept().
   
   It is already possible to set the socket option directly on the
   connected socket after it returned by accept() but experimentally this
   results in a socket with the specified buffer size but whose
   receive window will not be advertised to the client beyond the default
   (64K for current typical kernel defaults). So you get only some of the
   benefit of the larger buffer.
   
   Setting the buffer size on the listening socket, however, is mentioned
   as the correct approach in tcp(7) and does not suffer from the same
   limitation.
   
   A test is included which checks that the mechanism, including the
   inheritance, works.

   

   travisdowns committed Oct 11, 2024
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