Starting a suitable node

If we haven't already created suitable descriptors, we need to do this now:

% hospitality_init hos01
generating hospitality for hos01...
generating key pair for hos01...
% ls hos01*
hos01-boot.xml	hos01.prv  hos01.pub
% telnet_init 2000
configuring telnet on 2000...
% ls telnet-*
telnet-2000.xml
% sas2_init sas01
generating key pair for sas01...
creating sas01 launch descriptor... 
configuring sas01...
% ls sas01*
sas01-boot.xml	sas01.prv  sas01.pub  sas01.xml
% 

In this example we need an HTTP server (port 80) and a DNS server (port 53). Such access to privileged ports is not granted to just anyone. We need the following:

1. The nodes must be running as the machine's administrator (e.g. root on Linux, administrator on Windows) or any other user who can start services on those ports.
2. Our node must be told explicitly to make these ports available to netlets.

Therefore we become the administrator and run the following. (Note for Windows users: The file jnode.bat does not support the -webres option. Instead, have a look in that file with a text editor. It will tell how to make a simple change to get the same effect.)...

# jnode 104 -webres hos01-boot.xml hosting-out=hos01-admin.xml \
     telnet-2000.xml hosting-in=hos01-admin.xml \
     sas01-boot.xml hosting-in=hos01-admin.xml \
         hosting-out=hos01-real-admin.xml sas-out=sas01-warrant.xml \
         sas-desc=sas01-real-desc.xml
Jnode starting...
Initialising Nodality...
Bootstrap starting
starting hos01-boot

-------------------------------------------------------
GMS: address is victoria:1455
-------------------------------------------------------
no mapping for sas-in: SAS Warrant
writing hos01-admin.xml for hosting-out: Admin Warrant
deleting /var/tmp/jtrix/disk-104/dsk-6875745-0
deleting /var/tmp/jtrix/disk-104/dsk-6875745-3
deleting /var/tmp/jtrix/disk-104/dsk-6875745-5
starting telnet-2000
reading hos01-admin.xml for hosting-in: Telnet Hosting Warrant
starting sas01-boot
reading hos01-admin.xml for hosting-in: hosting admin warrant
writing sas01-real-desc.xml for sas-desc: sas descriptor
writing sas01-warrant.xml for sas-out: real SAS warrant
writing hos01-real-admin.xml for hosting-out: real hosting warrant
Bootstrap complete

All that's different is the extra argument -webres which requests the relevant resources. This really does nothing more than request two port blocks with the -netblock option of jnode.jar. See Appendix  for the appropriate help file.