HAVE_STRUCT_TCP_INFO_TCPI_LAST_ACK_SENT 936 ext/socket/option.c defined HAVE_STRUCT_TCP_INFO_TCPI_LAST_ACK_SENT || \ HAVE_STRUCT_TCP_INFO_TCPI_LAST_ACK_SENT 1066 ext/socket/option.c #ifdef HAVE_STRUCT_TCP_INFO_TCPI_LAST_ACK_SENT