localHostAddressJason Johnson jason.johnson.081 at gmail.comSun Oct 7 06:42:51 UTC 2007
I would have to see your /etc/hosts.conf but you are pinging "Otter.local" which does look like an external (i.e. not localhost) address. If you have more then one entry for Otter that points to different interfaces then this could happen. But if you ping "localhost" it should be 127.0.0.1 every time. Also note that regardless of what ping etc. may be reporting, all traffic from Otter that actually goes to Otter is going over the loopback interface, not either of those IP addresses. On 10/7/07, John M McIntosh <johnmci at smalltalkconsulting.com> wrote: > Let's see. First on os-x we just use the unix socket code so looking > at the primitive we see > > EXPORT(sqInt) primitiveResolverLocalAddress(void) { > sqInt addr; > sqInt _return_value; > > addr = sqResolverLocalAddress(); > > which is > > sqInt sqResolverLocalAddress(void) { return nameToAddr > (localHostName); } > > which is > > /* answer the IP address for the given hostname */ > > static int nameToAddr(char *hostName) > { > struct hostent *he; > > lastError= 0; /* ditto */ > if ((he= gethostbyname(hostName))) > return ntohl(*(long *)(he->h_addr_list[0])); > lastError= h_errno; /* and one more ditto */ > return 0; > } > > The gethostbyname(), gethostbyname2() and gethostbyaddr() > functions each > return a pointer to an object with the following structure > describing an > internet host referenced by name or by address, respectively. > This > structure contains either the information obtained from the > name server, > named(8), or broken-out fields from a line in /etc/hosts. If > the local > name server is not running these routines do a lookup in /etc/ > hosts. > > struct hostent { > char *h_name; /* official name of host */ > char **h_aliases; /* alias list */ > int h_addrtype; /* host address type */ > int h_length; /* length of address */ > char **h_addr_list; /* list of addresses from name > server */ > }; > > > Now on this machine there are multiple network interfaces > > en0 is ethernetport > en1 is 802.11n (wireless, active) > en2 is Parallels virtual interface for Host-Guest > en3 is Parallels virtual interface for NAT > > I'll note the machine is otter.local. > If I ping say otter.local it says > > [otter:~] johnmci% ping Otter.local > PING otter.local (10.37.129.2): 56 data bytes > 64 bytes from 10.37.129.2: icmp_seq=0 ttl=64 time=0.034 ms > 64 bytes from 10.37.129.2: icmp_seq=1 ttl=64 time=0.070 ms > 64 bytes from 10.37.129.2: icmp_seq=2 ttl=64 time=0.064 ms > 64 bytes from 10.37.129.2: icmp_seq=3 ttl=64 time=0.090 ms > > another try gave me > > [otter:~] johnmci% ping otter.local > PING otter.local (192.168.1.130): 56 data bytes > 64 bytes from 192.168.1.130: icmp_seq=0 ttl=64 time=0.024 ms > 64 bytes from 192.168.1.130: icmp_seq=1 ttl=64 time=0.066 ms > 64 bytes from 192.168.1.130: icmp_seq=2 ttl=64 time=0.080 ms > 64 bytes from 192.168.1.130: icmp_seq=3 ttl=64 time=0.086 ms > > In checking the results from gethostbyname I get > h_name -> otter.local > h_aliases -> address -> 0x00000000 > h_addresstype -> 2 > h_length -> 4 > h_addr_list -> address -> ox0a258102 > > > So the gethostbyname is returning the address of the Parallels > virtual interface for Hosts-Guest > So obviously the unix call might not return what you think it should > if there are multiple interfaces active for your machine. > I'l do a ifconfig -a and see what's lurking > > en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > ether 00:17:f2:d9:57:35 > media: autoselect status: inactive > supported media: autoselect 10baseT/UTP <half-duplex> > 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,hw-loopback> > 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> > 100baseTX <full-duplex> 100baseTX <full-duplex,hw-loopback> 100baseTX > <full-duplex,flow-control> 1000baseT <full-duplex> 1000baseT <full- > duplex,hw-loopback> 1000baseT <full-duplex,flow-control> none > en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > inet6 fe80::21b:63ff:fe02:d2db%en1 prefixlen 64 scopeid 0x5 > inet 192.168.1.130 netmask 0xffffff00 broadcast 192.168.1.255 > ether 00:1b:63:02:d2:db > media: autoselect status: active > supported media: autoselect > en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> > mtu 1500 > inet6 fe80::201:23ff:fe45:6789%en2 prefixlen 64 scopeid 0x8 > inet 10.37.129.2 netmask 0xffffff00 broadcast 10.37.129.255 > ether 00:01:23:45:67:89 > media: autoselect status: active > supported media: autoselect > en3: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> > mtu 1500 > inet6 fe80::210:32ff:fe54:7698%en3 prefixlen 64 scopeid 0x9 > inet 10.211.55.2 netmask 0xffffff00 broadcast 10.211.55.255 > ether 00:10:32:54:76:98 > media: autoselect status: active > supported media: autoselect > > > > On Oct 6, 2007, at 3:18 PM, Robert Arning wrote: > > > > > I haven't tried this in a while (previous computer), but I'm not > > able to get > > the address of my computer. > > > > NetNameResolver localHostAddress ==> a ByteArray(0 0 0 0) > > > > All the other NetNameResolver functions seem to be working fine, > > including > > giving it my address and having it lookup the name. > > > > This is MacOS 10.4 and I have tried in a Croquet 1.0 image and a > > much older > > image as well. > > > > I have a feeling this requires some sort of UNIX incantation, but > > I'm not > > sure what. Any ideas? > > > > Cheers, > > Bob > > -- > > View this message in context: http://www.nabble.com/ > > localHostAddress-tf4581383.html#a13078111 > > Sent from the Squeak - Dev mailing list archive at Nabble.com. > > > > > > -- > ======================================================================== > === > John M. McIntosh <johnmci at smalltalkconsulting.com> > Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com > ======================================================================== > === > > > >
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