message: SW_SOCKET_BUFFER_SIZE in FreeBSD will be 2M.
diff: #define SW_SOCKET_OVERFLOW_WAIT 100
  #define SW_SOCKET_MAX_DEFAULT 65536
  -#ifdef __MACH__
  +#if defined(__MACH__) || defined(__FreeBSD__)
  #define SW_SOCKET_BUFFER_SIZE 262144
  #else
  #define SW_SOCKET_BUFFER_SIZE 8388608
  