HAVE_STRUCT_TCP_INFO_TCPI_LAST_ACK_RECV  937 ext/socket/option.c     defined HAVE_STRUCT_TCP_INFO_TCPI_LAST_ACK_RECV  || \
HAVE_STRUCT_TCP_INFO_TCPI_LAST_ACK_RECV 1072 ext/socket/option.c #ifdef HAVE_STRUCT_TCP_INFO_TCPI_LAST_ACK_RECV