disable network at start (provide an offline function)

[grinapo]

With the recent josm.openstreetmap.de crash it became apparent how dependant JOSM startup process on availability of the website: at start JOSM tries to check every plugin (if set), every external linked file etc., which makes startup time excessively long.

It would be nice to have an option to disable any network traffic at startup so at least The User would be able to change settings or work without josm.openstreetmap.de.

[skyper]

See also #4614

[skyper]

An untested workaround would be to unplug the cable or disable networking on startup.

[grinapo]

Replying to skyper:

An untested workaround would be to unplug the cable or disable networking on startup.

Unfortunately it's not feasible on a machine with plenty of active connections. Granted that I could have firewalled josm.openstreetmap.de or I could have changed its IP in /etc/hosts to 127.0.0.1 but these usually require root access (and plugging the plug often requires physical force against the sysadmin and possibly lethal actions by either parties ;)).

[Don-vip]

Ticket #8531 has been marked as a duplicate of this ticket.

[stoecker]

JOSM does not do what you say above. It works usually about 4 weeks without accessing any data from the server. I believe even after that in case of load failures it starts. Most of the updates either are uncritical or can be delayed a long time - oNly exception mayb be first start after an upgrade. So when something blocks the normal start we need to find the reason why it does block instead of loading data asynchronous.

[grinapo]

It's not about starting, it's about delays. LONG delays. Basically EVERY connection to josm.o-sm.de took around 30 seconds (timeout), which resulted some 10 minutes starting time. Works but pretty uncomformatble.
The reason was well known: josm website dead. It's just we do not possess the power to fix it and it took the better half of the night to have someone who could. Disabling net access at start would have come pretty handy.

[Don-vip]

In 6143/josm:

see #8885 - cleanup in command line arguments and website URL handling

[Don-vip]

Ticket #4614 has been marked as a duplicate of this ticket.

[Don-vip]

In 7434/josm:

fix #8885 (see #4614) - add offline mode with new command line argument --offline which can take one of several of these values (comma separated):

• josm_website: to disable all accesses to JOSM website (when not cached, disables Getting Started page, help, plugin list, styles, imagery, presets, rules)
• osm_api: to disable all accesses to OSM API (disables download, upload, changeset queries, history, user message notification)
• all: alias to disable all values. Currently equivalent to "josm_website,osm_api"

Plus improved javadoc, fixed EDT violations, and fixed a bug with HTTP redirection sent without "Location" header

[Don-vip]

Ticket #8274 has been marked as a duplicate of this ticket.