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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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Plack::Handler(3pm)					User Contributed Perl Documentation				       Plack::Handler(3pm)

NAME
Plack::Handler - Connects PSGI applications and Web servers SYNOPSIS
package Plack::Handler::AwesomeWebServer; sub new { my($class, %opt) = @_; ... return $self; } sub run { my($self, $app) = @_; # launch the AwesomeWebServer and run $app in the loop } # then from command line plackup -s AwesomeWebServer -a app.psgi DESCRIPTION
Plack::Handler defines an adapter (connector) interface to adapt plackup and Plack::Runner to various PSGI web servers, such as Apache2 for mod_perl and Standalone for HTTP::Server::PSGI. It is an empty class, and as long as they implement the methods defined as an Server adapter interface, they do not need to inherit Plack::Handler. If you write a new handler for existing web servers, I recommend you to include the full name of the server module after Plack::Handler prefix, like Plack::Handler::Net::Server::Coro if you write a handler for Net::Server::Coro. That way you'll be using plackup command line option like: plackup -s Net::Server::Coro that makes it easy to figure out which web server you're going to use. METHODS
new $server = FooBarServer->new(%args); Creates a new adapter object. %args can take arbitrary parameters to configure server environments but common parameters are: port Port number the server listens to. host Address the server listens to. Set to undef to listen any interface. run $server->run($app); Starts the server process and when a request comes in, run the PSGI application passed in $app in the loop. register_service $server->register_service($app); Optional interface if your server should run in parallel with other event loop, particularly AnyEvent. This is the same as "run" but doesn't run the main loop. SEE ALSO
rackup perl v5.14.2 2011-02-27 Plack::Handler(3pm)
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