Folks,
I was exploring various alternatives for the local host addresses in Bob,
TiddlyServer and I expect what I found would be the same for node installs.
Problem
- Normally on my home LAN my Bob and tiddly server are accessible on the
LAN
- To keep it tidy and so it did not interfere with my DHCP (fixed)
network address I defined more addresses on my Network adaptor
- Eg Desktop 192.168.1.119 (DHCP) TiddlyServer on 192.168.1.81, Bob
on 192.168.84
- I have shared this tip previously
- However when I connect to another lan like my hot spot these addresses
are on the Wrong Network eg 192.168.3.X and do not work even just locally.
Discovery
- I discovered IPv4 network standards reserve the entire address block
127.0.0.0/8 (more than 16 million addresses) for loopback purpose
- Which made me aware that 127.0.0.1 is not the only available local
host address
Tip/Solution
- This means more than one instance of TiddlyServer and Bob/Bob.exe can
be set to a local host address,
- This leaves 127.0.0.1 free for hosting other servers.
- I tested this and it works well eg I use 127.0.4.80 127.0.4.81
127.0.4.82 127.0.4.83 127.0.4.84
Extension
- I hope that I am be able to configure TiddlySaver, Bob and Node to
Share on the addresses 192.168.1.80 - 84 in addition to the local host
address
- This will only work when I am on the 192.168.1.x network
- When on other networks such as 192.168.3.X or some shared network such
as my "hot spot" they will not be available on the LAN
- In my browser, on the computer hosting the servers, I will always use
the different local host addresses, and they will always be available when
the computer is on any network but private unless at home / 192.168.1.x
networks which means I time I may change this.
- Further investigation of The Internet Assigned Numbers Authority
(IANA) which has reserved 169.254.0.0-169.254.255.255 for Automatic Private
IP Addressing. As a result, APIPA provides an address that is guaranteed
not to conflict with routable addresses.
Regards
Tony
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