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Top Forums Programming Wuhan Coronavirus Status App for China - Rapid Prototype using MQTT and the IoT OnOff IOS App Post 303043694 by Neo on Tuesday 4th of February 2020 07:59:32 AM
Old 02-04-2020
Update:

Have noticed that getting the IoT OnOff app (on IOS, I don't have an Android phone) is very difficult for most people, who are not hardish core IT geeks, to connect to an MQTT server.

To set this, I set up another MQTT server without authentication, and could not get IoT OnOff to connect on both server after many tries.

This means that, although I build this app as a public service, it is so difficult for users to get it to work, I did not really accomplish my objective, because of the problems with IoT OnOff, which I have no control over since I am not the developer and I have not found any contact information for the developer except his name (on FB, LinkedIn, email on web site, etc).

To confirm that my MQTT servers are working, I set up Node-RED today, and it connects very easily with both my MQTT servers.

Wuhan Coronavirus Stats for China (from "official" source) using Node-RED:

Wuhan Coronavirus Status App for China - Rapid Prototype using MQTT and the IoT OnOff IOS App-screen-shot-2020-02-04-75517-pmjpg


I like the IoT OnOff app, but most people would consider me in the "uber-IT-guy" or "super-geek" category.

So in the future, unless the connection bugs are worked out in the IoT OnOff app for the iPhone, I will have to find another platform for a rapid-prototype public service app dashboard.

Node-RED might be a candidate (more on Node-Red later), but I will check out some other MQTT visualization dashboard for the web beforehand.
 

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chromium-browser(1)						   USER COMMANDS					       chromium-browser(1)

NAME
chromium-browser - the web browser from Google SYNOPSIS
chromium-browser [OPTION] [PATH|URL] DESCRIPTION
See the Google Chrome help center for help on using the browser. <http://www.google.com/support/chrome/> This manpage only describes invocation, environment, and arguments. OPTIONS
Chromium has hundreds of undocumented command-line flags that are added and removed at the whim of the developers. Here, we document rela- tively stable flags. --user-data-dir=DIR Specifies the directory that user data (your "profile") is kept in. Defaults to ~/.config/chromium . Separate instances of Chromium must use separate user data directories; repeated invocations of chromium-browser will reuse an existing process for a given user data directory. --app=URL Runs URL in "app mode": with no browser toolbars. --incognito Open in incognito mode. --proxy-server=host:port Specify the HTTP/SOCKS4/SOCKS5 proxy server to use for requests. This overrides any environment variables or settings picked via the options dialog. An individual proxy server is specified using the format: [<proxy-scheme>://]<proxy-host>[:<proxy-port>] Where <proxy-scheme> is the protocol of the proxy server, and is one of: "http", "socks", "socks4", "socks5". If the <proxy-scheme> is omitted, it defaults to "http". Also note that "socks" is equivalent to "socks5". Examples: --proxy-server="foopy:99" Use the HTTP proxy "foopy:99" to load all URLs. --proxy-server="socks://foobar:1080" Use the SOCKS v5 proxy "foobar:1080" to load all URLs. --proxy-server="socks4://foobar:1080" Use the SOCKS v4 proxy "foobar:1080" to load all URLs. --proxy-server="socks5://foobar:66" Use the SOCKS v5 proxy "foobar:66" to load all URLs. It is also possible to specify a separate proxy server for different URL types, by prefixing the proxy server specifier with a URL specifier: Example: --proxy-server="https=proxy1:80;http=socks4://baz:1080" Load https://* URLs using the HTTP proxy "proxy1:80". And load http://* URLs using the SOCKS v4 proxy "baz:1080". --no-proxy-server Disables the proxy server. Overrides any environment variables or settings picked via the options dialog. --proxy-auto-detect Autodetect proxy configuration. Overrides any environment variables or settings picked via the options dialog. --proxy-pac-url=URL Specify proxy autoconfiguration URL. Overrides any environment variables or settings picked via the options dialog. --password-store=<basic|gnome|kwallet> Set the password store to use. The default is to automatically detect based on the desktop environment. basic selects the built in, unencrypted password store. gnome selects Gnome keyring. kwallet selects (KDE) KWallet. (Note that KWallet may not work reli- ably outside KDE.) --version Show version information. As a GTK+ app, Chromium also obeys GTK+ command-line flags, such as --display. See the GTK documentation for more: <http://library.gnome.org/devel/gtk/stable/gtk-running.html> <http://library.gnome.org/devel/gtk/stable/gtk-x11.html> ENVIRONMENT
Chromium obeys the following environment variables: all_proxy Shorthand for specifying all of http_proxy, https_proxy, ftp_proxy http_proxy, https_proxy, ftp_proxy The proxy servers used for HTTP, HTTPS, and FTP. Note: because Gnome/KDE proxy settings may propagate into these variables in some terminals, this variable is ignored (in preference for actual system proxy settings) when running under Gnome or KDE. Use the com- mand-line flags to set these when you want to force their values. auto_proxy Specify proxy autoconfiguration. Defined and empty autodetects; otherwise, it should be an autoconfig URL. But see above note about Gnome/KDE. SOCKS_SERVER SOCKS proxy server (defaults to SOCKS v4, also set SOCKS_VERSION=5 to use SOCKS v5). no_proxy Comma separated list of hosts or patterns to bypass proxying. FILES
~/.config/chromium Default directory for configuration data. ~/.cache/chromium Default directory for cache data. (Why? See <http://standards.freedesktop.org/basedir-spec/latest/> .) BUGS
Bug tracker: http://code.google.com/p/chromium/issues/list Be sure to do your search within "All Issues" before reporting bugs, and be sure to pick the "Defect on Linux" template when filing a new one. AUTHOR
The Chromium team - <http://www.chromium.org> chromium-browser(1)
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