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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::App::CGIBin(3pm) 				User Contributed Perl Documentation				   Plack::App::CGIBin(3pm)

NAME
Plack::App::CGIBin - cgi-bin replacement for Plack servers SYNOPSIS
use Plack::App::CGIBin; use Plack::Builder; my $app = Plack::App::CGIBin->new(root => "/path/to/cgi-bin")->to_app; builder { mount "/cgi-bin" => $app; }; # Or from the command line plackup -MPlack::App::CGIBin -e 'Plack::App::CGIBin->new(root => "/path/to/cgi-bin")->to_app' DESCRIPTION
Plack::App::CGIBin allows you to load CGI scripts from a directory and convert them into a PSGI application. This would give you the extreme easiness when you have bunch of old CGI scripts that is loaded using cgi-bin of Apache web server. HOW IT WORKS
This application checks if a given file path is a perl script and if so, uses CGI::Compile to compile a CGI script into a sub (like ModPerl::Registry) and then run it as a persistent application using CGI::Emulate::PSGI. If the given file is not a perl script, it executes the script just like a normal CGI script with fork & exec. This is like a normal web server mode and no performance benefit is achieved. The default mechanism to determine if a given file is a Perl script is as follows: o Check if the filename ends with ".pl". If yes, it is a Perl script. o Open the file and see if the shebang (first line of the file) contains the word "perl" (like "#!/usr/bin/perl"). If yes, it is a Perl script. You can customize this behavior by passing "exec_cb" callback, which takes a file path to its first argument. For example, if your perl-based CGI script uses lots of global variables and such and are not ready to run on a persistent environment, you can do: my $app = Plack::App::CGIBin->new( root => "/path/to/cgi-bin", exec_cb => sub { 1 }, )->to_app; to always force the execute option for any files. AUTHOR
Tatsuhiko Miyagawa SEE ALSO
Plack::App::File CGI::Emulate::PSGI CGI::Compile Plack::App::WrapCGI See also Plack::App::WrapCGI if you compile one CGI script into a PSGI application without serving CGI scripts from a directory, to remove overhead of filesystem lookups, etc. perl v5.14.2 2011-11-02 Plack::App::CGIBin(3pm)
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