| What | Wapp |
| Where | https://wapp.tcl.tk/ |
| Description | A lightweight, secure web microframework in a single source file. Serves HTTP/1.1 directly, but supports CGI and SCGI as well. Aims for a small, easy-to-learn user API. |
| Prerequisites | Tcl 8.6. |
| Updated | 2019-10-15 |
| Author | drh |
| License | 2-clause BSD |
fossil clone https://wapp.tcl.tk/index.html wapp.fossil mkdir wapp cd wapp fossil open ../wapp.fossil tclsh tests/test01.tcl
or see other alternatives at https://wapp.tcl.tk/index.html/doc/trunk/docs/download.md
DEC: And you get hold of it by......?
AM See the link above
Dec :Which one?, No simple zip file then..
The following code excerpt results in no image being shown in browser. However, when I bring up the text view of the HTML (via ctrl-U on Chrome browser) and click the link from there, the image shows up. Why does the image not show up through wapp-default? 'Hello' prints as expected. Thanks in advance, Doug. (I replaced the real domain with example.com)
#!/usr/bin/tclsh
source <full_path>/lib/wapp/wapp.tcl
proc wapp-default {
wapp-subst {
<img src="http://www.example.com/IMG_1870.JPG" style="width:75%">
<br><b>Hello</b> World!
}
}
wapp-startdbohdan 2018-03-27: That's a consequence of Wapp's default Content Security Policy . (One of Wapp's design goals is to be secure by default , so the default policy is as strict as possible.) You can use curl -v and your Web browser's Console [L1 ] [L2 ] to debug the Content Security Policy.
Here is an example of how you can configure the Content Security Policy to allow images from a certain host:
#! /usr/bin/env tclsh
source wapp.tcl
proc wapp-default {} {
wapp-content-security-policy \
{default-src 'self'; img-src 'self' https://picsum.photos}
wapp-subst {
<!doctype html>
<img src="https://picsum.photos/450/300" style="width:75%">
<br><b>Hello</b> World!
}
}
wapp-start $::argv