Moved notes and posts into subfolders

1 files changed, 202 insertions, 0 deletions

diff --git a/content/posts/2021-12-30-wap-mobile-web-before-the-web.md b/content/posts/2021-12-30-wap-mobile-web-before-the-web.md
new file mode 100644
index 0000000..442943b
--- /dev/null
+++ b/content/posts/2021-12-30-wap-mobile-web-before-the-web.md
@@ -0,0 +1,202 @@
+---
+title: Wireless Application Protocol and the mobile web before the web
+url: wap-mobile-web-before-the-web.html
+date: 2021-12-30T12:00:00+02:00
+type: post
+draft: false
+---
+
+## A little stroll down the history lane
+
+About two weeks ago, I watched this outstanding documentary on YouTube
+[Springboard: the secret history of the first real
+smartphone](https://www.youtube.com/watch?v=b9_Vh9h3Ohw) about the history of
+smartphones and phones in general. It brought back so many memories. I never had
+an actual smartphone before the Android. The closest to smartphone was [Sony
+Ericsson P1](https://www.gsmarena.com/sony_ericsson_p1-1982.php).  A fantastic
+phone and I broke it in Prague after a party and that was one of those rare
+occasions where I was actually mad at myself. But nevertheless, after that
+phone, the next one was an Android one.
+
+Before that, I only owned normal phones from Nokia and Siemens etc. Nothing
+special, actually. These are the phones we are talking about. Before 2007.
+Apple and Android phones didn't exist yet.
+
+These phones were rocking:
+
+- No selfie cameras.
+- ~2 inch displays.
+- ~120 MHz beast CPU's.
+- 144p main cameras.
+- But they had a headphone jack.
+
+Let's take a look at these beauties.
+
+![Old phones](/assets/wap/phones.gif)
+
+## WAP - Wireless Application Protocol
+
+Not that one! We are talking about Wireless Application Protocol and not Cardi
+B's song 😃
+
+WAP stands for Wireless Application Protocol. It is a protocol designed for
+micro-browsers, and it enables the access of internet in the mobile devices.  It
+uses the mark-up language WML (Wireless Markup Language and not HTML), WML is
+defined as XML 1.0 application. Furthermore, it enables creating web
+applications for mobile devices. In 1998, WAP Forum was founded by Ericson,
+Motorola, Nokia and Unwired Planet whose aim was to standardize the various
+wireless technologies via protocols.
+[(source)](https://www.geeksforgeeks.org/wireless-application-protocol/)
+
+WAP protocol was resulted by the joint efforts of the various members of WAP
+Forum. In 2002, WAP forum was merged with various other forums of the industry,
+resulting in the formation of Open Mobile Alliance (OMA).
+[(source)](https://www.geeksforgeeks.org/wireless-application-protocol/)
+
+These were some wild times. Devices had tiny screens and data transmission rates
+were abominable. But they were capable of rendering WML (Wireless Markup
+Language). This was very similar to HTML, actually. It is a markup language,
+after all.
+
+These pages could be served by [Apache](https://apache.org/) and could be
+generated by CGI scripts on the backend. The only difference was the limited
+markup language.
+
+## WML - Wireless Markup Language
+
+Just like web browsers use HTML for content structure, older mobile device
+browsers use WML - if you need to support really old mobile phones using WML
+browsers, you will need to know about it. WML is XML-based (an XML vocabulary
+just like XHTML and MathML, but not HTML) and does not use the same metaphor as
+HTML. HTML is a single document with some metadata packed away in the head, and
+a body encapsulating the visible page. With WML, the metaphor does not envisage
+a page, but rather a deck of cards. A WML file might have several pages or cards
+contained within it.
+[(source)](https://www.w3.org/wiki/Introduction_to_mobile_web)
+
+```html
+<?xml version="1.0"?>
+<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
+<wml>
+  <card id="home" title="Example Homepage">
+    <p>Welcome to the Example homepage</p>
+  </card>
+</wml>
+```
+
+There is an amazing tutorial on [Tutorialpoint about
+WML](https://www.tutorialspoint.com/wml/index.htm).
+
+## Converting Digg to WML
+
+This task is completely useless and not really feasible nowadays, but I had to
+give it a try for old-time sake. Since the data is already there in a form of
+RSS feed, I could take this feed and parse it and create a WML version of the
+homepage.
+
+We will need:
+
+- Python3 + Pip
+- ImageMagick
+- feedparser and mako templating
+
+```sh
+# for fedora 35
+sudo dnf install ImageMagick python3-pip
+
+# tempalting engine for python
+pip install mako --user
+
+# for parsing rss feeds
+pip install feedparser --user
+```
+
+Project folder structure should look like the following.
+
+```
+12:43:53 m@khan wap → tree -L 1
+.
+├── generate.py
+└── template.wml
+
+```
+
+After that, I created a small template for the homepage.
+
+```html
+<?xml version="1.0"?>
+<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.2//EN" "http://www.wapforum.org/DTD/wml_1.2.xml">
+
+<wml>
+
+  <card title="Digg - What the Internet is talking about right now">
+
+    % for item in entries:
+      <p><img src="/images/${item.id}.jpg" width="175" height="95" alt="${item.title}" /></p>
+      <p><small>${item.kicker}</small></p>
+      <p><big><b>${item.title}</b></big></p>
+      <p>${item.description}</p>
+    % endfor
+
+  </card>
+
+</wml>
+```
+
+And the parser that parses RSS feed looks like this.
+
+```python
+import os
+import feedparser
+from mako.template import Template
+
+os.system('mkdir -p www/images')
+
+template = Template(filename='template.wml')
+
+feed = feedparser.parse('https://digg.com/rss/top.xml')
+
+entries = feed.entries[:15]
+
+for entry in entries:
+  print('Processing image with id {}'.format(entry.id))
+  os.system('wget -q -O www/images/{}.jpg "{}"'.format(entry.id, entry.links[1].href))
+  os.system('convert www/images/{}.jpg -type Grayscale -resize 175x -depth 3 -quality 30 www/images/{}.jpg'.format(entry.id, entry.id))
+
+html = template.render(entries = entries)
+
+with open('www/index.wml', 'w+') as fp:
+  fp.write(html)
+```
+
+This script will create a folder `www` and in the folder `www/images` for
+storing resized images.
+
+> Be sure you don't use SSL and use just normal HTTP for serving the content.
+> These old phones will have problems with TLS 1.3 etc.
+
+If you look at the python file, I convert all the images into tiny B&W images.
+They should be WBMP (Wireless BitMaP) but I choose JPEGs for this, and it seems
+to work properly.
+
+Because I currently don't have a phone old enough to test it on, I used an
+emulator. And it was really hard to find one. I found [WAP
+Proof](http://wap-proof.sharewarejunction.com/) on shareware junction, and it
+did the job well enough. I will try to find and actual device to test it on.
+
+<video src="/assets/wap/emulator.mp4" controls></video>
+
+If you are using Nginx to serve the contents, add a directive to the hosts file
+that will automatically server `index.wml` file.
+
+```nginx
+server {
+  index index.wml index.html index.htm index.nginx-debian.html;
+}
+```
+
+## Conclusion
+
+Well, this was pointless, but very fun! I hope you enjoyed it as much as I did.
+I will try to find an old phone to test it on. If you have any questions, feel
+free to ask in the comments.