# Web server.I can't figure out how to do it **URL:** \ **Category:** General\ **Tags:** how-to\ **Created:** [November 28, 2023, 8:18am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003 "2023-11-28T08:18:16Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![heiheshang](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/heiheshang/32/4419_2.png) [@heiheshang](https://swi-prolog.discourse.group/u/heiheshang)\ **Post date:** [November 28, 2023, 8:18am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/1 "2023-11-28T08:18:16Z")
Tell me how you can give the entire page with the files included in it. My web server serves a static page, while it was pure HTML there were no problems, I output the file via format, but now I have scripts, they are in a subdirectory of the main page, how can I organize the delivery of all the files that the page requests? ---
**Author:** ![Ian](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/ian/32/1026_2.png) [@Ian](https://swi-prolog.discourse.group/u/Ian)\ **Post date:** [November 28, 2023, 9:16am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/2 "2023-11-28T09:16:18Z")
A web server will deliver those files if they are referenced in the page correctly. e.g. CSS links or script links. You should go over [this tutorial](https://github.com/Anniepoo/swiplwebtut/blob/07b42b1e7eac000d9eeac959ba2a38a616fd4b9b/web.adoc) to get familiar with the HTTP libraries . ---
**Author:** ![heiheshang](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/heiheshang/32/4419_2.png) [@heiheshang](https://swi-prolog.discourse.group/u/heiheshang)\ **Post date:** [November 28, 2023, 9:29am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/3 "2023-11-28T09:29:03Z")
As I understand it, it all works if you create a page on swi-prolog, I just output the page from a file. ```prolog absolute_file_name('static/index.html', Index, [access(read)]), read_file_to_string(Index, Reply, []), format('Content-type: text/html~n~n'), format(Reply). ``` when a request for a page with a script arrives, the server does not know this. ---
**Author:** ![Ian](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/ian/32/1026_2.png) [@Ian](https://swi-prolog.discourse.group/u/Ian)\ **Post date:** [November 28, 2023, 9:44am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/4 "2023-11-28T09:44:03Z")
See section 10.1 serving static files in the tutorial. ---
**Author:** ![EricGT](https://avatars.discourse-cdn.com/v4/letter/e/f1d935/32.png) [@EricGT](https://swi-prolog.discourse.group/u/EricGT)\ **Post date:** [November 28, 2023, 9:44am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/5 "2023-11-28T09:44:54Z")
Web server. I can’t figure out how to do it. I know what you mean. This may help. > [@Wiki Discussion: Generating Cytoscape.js graphs with SWI-Prolog](https://swi-prolog.discourse.group/t/wiki-discussion-generating-cytoscape-js-graphs-with-swi-prolog/2816/9): > > While learning how to use [ChatGPT with coding](https://swi-prolog.discourse.group/t/quite-a-few-basic-prolog-questions-of-chatgpt/6145) created a better base set of code and files for my Cytoscape.js with SWI-Prolog example. The code is not in an [expandable text section](https://swi-prolog.discourse.group/t/expandable-text-sections/1326) as that hides it from search indexing and the code needs to be found via a search. Note: The directory C:/Users/Groot is just an example you can choose another directory just make sure that files can be created and written in the directory by the user. This examples needs an HTML server. To start the server: Welco… Note: I have published a few variations over a few years but the example in the link is the last one I published that uses Cytoscape.js with SWI-Prolog. HTH ---
**Author:** ![jan](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/jan/32/4_2.png) [@jan](https://swi-prolog.discourse.group/u/jan)\ **Post date:** [November 28, 2023, 10:00am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/6 "2023-11-28T10:00:36Z")
Do not forget http\_reply\_from\_files/3, which simply serves static files from a whole directory tree. That is what you would typically use, unless you have a dedicated server that only needs to serve a few files. ---
**Author:** ![peter.ludemann](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/peter.ludemann/32/48_2.png) [@peter.ludemann](https://swi-prolog.discourse.group/u/peter.ludemann)\ **Post date:** [November 28, 2023, 10:52am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/7 "2023-11-28T10:52:02Z")
For an example of how to serve static pages using http\_reply\_from\_files/3, look at [GitHub - kamahen/swipl-server-js-client: Sample SWI-Prolog server with JavaScript client](https://github.com/kamahen/swipl-server-js-client) `simple_server.pl` has this line: ```prolog :- http_handler(static(.), http_reply_from_files(static_dir(.), [cache(true)]), [prefix]). ``` and there are 4 static files in the `static` directory: - `favicon.ico` - `simple_client.css` - `simple_client.html` - `simple_client.js` When the server is first accessed, the `root(.)` handler redirects to the `static` directory, which is used to fetch the 4 static files: ```prolog :- http_handler(root(.), http_handler_redirect( moved, % or 'moved_temporary', for easier debugging static('simple_client.html')), []). %! http_handler_redirect(+How:atom, +To, +Request) is det. % This is used to output some debug information before % calling http_redirect/3. http_handler_redirect(How, To, Request) :- memberchk(path(Base), Request), memberchk(request_uri(RequestURI), Request), http_absolute_location(To, ToURL, [relative_to(Base)]), uri_components(RequestURI, URI), uri_data(path, URI, ToURL, ToURI), uri_components(NewTo, ToURI), debug(redirect_log, 'Redirect: ~q', [[how:How, to:To, toURL:ToURL, requestURI:RequestURI, uri:URI, toURI:ToURI, newTo: NewTo]]), http_redirect(How, NewTo, Request). ``` with debug logging turned on, the request `http://localhost:9999` produces this trace: ```plaintext % static dir: static % Started server at http://localhost:9999/ % Starting REPL ... ?- % [Thread httpd@9999_4] [1] get / ... % [Thread httpd@9999_4] Redirect: [how:moved,to:static('simple_client.html'),toURL:'/static/simple_client.html',requestURI:(/),uri:uri_components(_16038,_16040,/,_16044,_16046),toURI:uri_components(_16038,_16040,'/static/simple_client.html',_16044,_16046),newTo:'/static/simple_client.html'] % [Thread httpd@9999_4] [1] 301 moved(/static/simple_client.html); 366 bytes % [Thread httpd@9999_1] [2] get /static/simple_client.html ... % [Thread httpd@9999_1] [2] 200 file(text/html; charset=UTF-8,/home/peter/src/swipl-server-js-client/static/simple_client.html); 2,038 bytes % [Thread httpd@9999_4] [3] get /static/simple_client.css ... % [Thread httpd@9999_4] [3] 200 file(text/css; charset=UTF-8,/home/peter/src/swipl-server-js-client/static/simple_client.css); 402 bytes % [Thread httpd@9999_2] [4] get /static/simple_client.js ... % [Thread httpd@9999_2] [4] 200 file(text/javascript; charset=UTF-8,/home/peter/src/swipl-server-js-client/static/simple_client.js); 4,474 bytes % [Thread httpd@9999_5] [5] get /static/favicon.ico ... % [Thread httpd@9999_5] [5] 200 file(image/x-ico,/home/peter/src/swipl-server-js-client/static/favicon.ico); 32,038 bytes ``` The request for `/static/simple_client.html` is from the redirect; the other requests are from these lines in `simple_client.html`: ```html ``` ---
**Author:** ![jan](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/jan/32/4_2.png) [@jan](https://swi-prolog.discourse.group/u/jan)\ **Post date:** [November 28, 2023, 10:59am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/8 "2023-11-28T10:59:19Z")
> [@peter.ludemann](#): > > ```prolog > http_handler_redirect(How, To, Request) :- > > ``` Why not simply http\_redirect/3? And note there is since not-too-long uri\_edit/3 which simplifies the rewriting a lot. ---
**Author:** ![heiheshang](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/heiheshang/32/4419_2.png) [@heiheshang](https://swi-prolog.discourse.group/u/heiheshang)\ **Post date:** [November 28, 2023, 12:49pm UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/9 "2023-11-28T12:49:57Z")
I still can’t understand, you are doing a redirect, but I don’t need a redirect. I have a website in the static folder. I just want that if they access the /run path, then the files should be loaded from the static folder, if they access /\_app/, then the files should be loaded from this folder ---
**Author:** ![heiheshang](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/heiheshang/32/4419_2.png) [@heiheshang](https://swi-prolog.discourse.group/u/heiheshang)\ **Post date:** [November 28, 2023, 1:47pm UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/10 "2023-11-28T13:47:37Z")
I managed to launch the application, but there are errors that I do not understand. ```prolog [Thread httpsd8083_1] [1] 200 file(text/html; charset=UTF-8,/home/oper/Programs/ptasker/static/index.html); 1,054 bytes Warning: [Thread httpsd8083_5] Illegal HTTP request: AUTH_ID=2de655d985e62541b678ce09c010d&AUTH_EXPIRES=3600&REFRESH_ID=487b8d650068f16005ff42739684a93723f089&member_id=bf771deb0c0&status=L&PLACEMENT=MENU&PLACEMENT_OPTIONS=%7B%22ID%22%3A%221015091%22%7DGET /_app/immutable/entry/start.2113177d.js HTTP/1.1 (in_http_request) % [Thread httpsd8083_5] [0] 400 ERROR: Illegal HTTP request: AUTH_ID=58fc65650068f1de655d985e62541b678ce09c010d&AUTH_EXPIRES=3600&REFRESH_ID=487b8d650ff42739684a93723f089&member_id=bf778c79b61deb0c0&status=L&PLACEMENT=MENU&PLACEMENT_OPTIONS=%7B%22ID%22%3A%221015091%22%7DGET /_app/immutable/entry/start.2113177d.js HTTP/1.1 (in_http_request) ``` ---
**Author:** ![EricGT](https://avatars.discourse-cdn.com/v4/letter/e/f1d935/32.png) [@EricGT](https://swi-prolog.discourse.group/u/EricGT)\ **Post date:** [November 28, 2023, 2:16pm UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/11 "2023-11-28T14:16:37Z")
Getting an initial SWI-Prolog web site up and not understanding the errors, how to get more information and how to fix it can be hard. I passed the log info you noted to ChatGPT and it noted that you did get a valid `index.html` reply but that the second request was malformed. Without seeing your code not much more can be done. I am not asking to see your code and debug your problem but others might, so posting it could help. Often what I have to fall back to in getting a site up is to start with a good working example and then modify it with small steps at a time until it is what I need. Before LLMs such as ChatGPT came along this was really hard but I have found that ChatGPT can give some ideas for the Prolog, but that the exact Prolog code is often wrong, and help with other parts such as the JavaScript, HTML, CSS and such and that is often of a higher quality but still may have some errors. Also if LLM gives you something wrong, take the error from that and give it back to the LLM and it might give you a better reply. After about five feedbacks, it then becomes of no value so you have to resort to other methods or restart with a new problem or new question. HTH ---
**Author:** ![jan](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/jan/32/4_2.png) [@jan](https://swi-prolog.discourse.group/u/jan)\ **Post date:** [November 28, 2023, 2:35pm UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/12 "2023-11-28T14:35:48Z")
> [@heiheshang](#): > > `Illegal HTTP request` If tells you that the HTTP request could not be parsed. Now this may be an issue with http\_read\_request/2. I don’t recall to ever have seen that message unless creating a request by hand. You can inspect the full negotiation using ``` ?- debug(http(_)). ``` Or trace the execution using ``` ?- tspy(http_read_request/2). ``` Which tool/browser is creating the request? ---
**Author:** ![heiheshang](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/heiheshang/32/4419_2.png) [@heiheshang](https://swi-prolog.discourse.group/u/heiheshang)\ **Post date:** [November 28, 2023, 11:48pm UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/13 "2023-11-28T23:48:46Z")
> [@jan](#): > > `debug(http(_)).` ```prolog % [Thread httpsd8083_5] [1] 200 file(text/html; charset=UTF-8,/home/oper/Programs/ptasker/static/index.html); 1,054 bytes % [Thread httpsd8083_5] 4 waiting for work; ok % [Thread httpsd8083_1] Waiting for a job ... % [Thread httpsd8083_1] Got job requeue((0x253f500),(0x253f400),server_rpc:http_dispatch,[protocol(https),peer(ip(79,105,116,32 )),pool(client(httpsd8083,server_rpc:http_dispatch,(0x253f500),(0x253f400)))]) % [Thread httpsd8083_1] Waiting for keep-alive ... % [Thread httpsd8083_1] re-using keep-alive connection % [Thread httpsd8083_1] Running server goal server_rpc:http_dispatch on (0x253f500) -> (0x253f400) % [Thread httpsd8083_1] First line: AUTH_ID=ae7d66650068f16014ecb9e8957971f38b&AUTH_EXPIRES=3600&REFRESH_ID=9efc8d650068f160002c465e19e97e6892ed8&member_id=bf778c71deb0c0&status=L&PLACEMENT=MENU&PLACEMENT_OPTIONS=%7B%22ID%22%3A%221015105%22%7DGET /_app/immutable/entry/start.2113177d.js HTTP/1.1 % [Thread httpsd8083_1] Header = Host: v.hopto.org:8083 Connection: keep-alive sec-ch-ua: "Not)A;Brand";v="24", "Chromium";v="116" Origin: https://v.hopto.org:8083 sec-ch-ua-mobile: ?0 User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36 sec-ch-ua-platform: "Linux" Accept: */* Sec-Fetch-Site: same-origin Sec-Fetch-Mode: cors Sec-Fetch-Dest: script Referer: https://v.hopto.org:8083/courier?DOMAIN=v.ru&PROTOCOL=1&LANG=ru&APP_SID=9e09edf6182ce00f39e05e9d320c0953 Accept-Encoding: gzip, deflate, br Accept-Language: ru,en;q=0.9,ru-RU;q=0.8,en-US;q=0.7 Cookie: cotonic-sid=86c7eb02-5cea-66c2-738a-8083fb861056 % [Thread httpsd8083_1] Field: [host('v.hopto.org'),port(8083),connection('keep-alive'),sec_ch_ua('"Not)A;Brand";v="24", "Chromium";v="116"'),origin('https://v.hopto.org:8083'),sec_ch_ua_mobile('?0'),user_agent('Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/116.0.0.0 Safari/537.36'),sec_ch_ua_platform('"Linux"'),accept([media(_4312/_4314,[],1.0,[])]),sec_fetch_site('same-origin'),sec_fetch_mode(cors),sec_fetch_dest(script),referer('https://v.hopto.org:8083/courier?DOMAIN=v.ru&PROTOCOL=1&LANG=ru&APP_SID=9e09edf9e05e9d320c0953'),accept_encoding('gzip, deflate, br'),accept_language('ru,en;q=0.9,ru-RU;q=0.8,en-US;q=0.7'),cookie(['cotonic-sid'='86c7eb02-5cea-66c2-738a-8083fb861056'])] Warning: [Thread httpsd8083_1] Illegal HTTP request: AUTH_ID=ae7d66650068f16ba614ecb9e8957971f38b&AUTH_EXPIRES=3600&REFRESH_ID=9efc8d650068f16049038e7548b365e19e97e6892ed8&member_id=bf778c7d15521619b61deb0c0&status=L&PLACEMENT=MENU&PLACEMENT_OPTIONS=%7B%22ID%22%3A%221015105%22%7DGET /_app/immutable/entry/start.2113177d.js HTTP/1.1 (in_http_request) % [Thread httpsd8083_1] < HTTP/1.1 400 Bad Request Date: Tue, 28 Nov 2023 22:54:23 GMT Connection: close Content-Length: 716 Content-Type: text/html; charset=UTF-8 % [Thread httpsd8083_1] [0] 400 ERROR: Illegal HTTP request: AUTH_ID=ae7d66650068f1614ecb9e8957971f38b&AUTH_EXPIRES=3600&REFRESH_ID=9efc8d650068f160002c4d40000000b365e19e97e6892ed8&member_id=bf778c7d119b61deb0c0&status=L&PLACEMENT=MENU&PLACEMENT_OPTIONS=%7B%22ID%22%3A%221015105%22%7DGET /_app/immutable/entry/start.2113177d.js HTTP/1.1 (in_http_request) % [Thread httpsd8083_1] Closing connection from ip(179,115,116,32) % [Thread https@8083] New HTTPS connection from ip(179,115,116,32) % [Thread https@8083] 5 waiting for work; ok % [Thread httpsd8083_5] Waiting for a job ... % [Thread httpsd8083_5] Got job ssl_client((0x1ec33c0),(0x27c4090),server_rpc:http_dispatch,ip(79,105,116,32)) ``` ---
**Author:** ![peter.ludemann](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/peter.ludemann/32/48_2.png) [@peter.ludemann](https://swi-prolog.discourse.group/u/peter.ludemann)\ **Post date:** [November 29, 2023, 2:35am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/14 "2023-11-29T02:35:43Z")
> [@heiheshang](#): > > I still can’t understand, you are doing a redirect, but I don’t need a redirect. If you don’t want redirection, you can change the http\_handler/3 for `root(.)` to be what my handler for `static(.)` does. See also the http:location/3 facts. > [@jan](#): > > Why not simply [http\_redirect/3](https://www.swi-prolog.org/pldoc/doc_for?object=http_redirect/3)? I call http\_redirect/3 at the end of my `http_handler_redirect/3` … looking at the code for http\_redirect/3, I see that I’ve duplicated a certain amount of what http\_redirect/3 does. I wrote the sample code a while ago, and don’t remember why I didn’t use http\_redirect/3 directly … I’ll try to simplify the code and report back here (hopefully, within a day or two). ---
**Author:** ![jan](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/jan/32/4_2.png) [@jan](https://swi-prolog.discourse.group/u/jan)\ **Post date:** [November 29, 2023, 9:52am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/15 "2023-11-29T09:52:00Z")
> [@heiheshang](#): > > `% [Thread httpsd8083_1] First line: AUTH_ID=ae7d66650068f16014ecb9e8957971f38b&AUTH_EXPIRES=3600&REFRESH_ID=9efc8d650068f160002c465e19e97e6892ed8&member_id=bf778c71deb0c0&status=L&PLACEMENT=MENU&PLACEMENT_OPTIONS=%7B%22ID%22%3A%221015105%22%7DGET /_app/immutable/entry/start.2113177d.js HTTP/1.1` In RFC 2616, we find ``` Request-Line = Method SP Request-URI SP HTTP-Version CRLF ``` That turns the above to be invalid. Now RFC 2616 is replaced by RFC9110. That is a bit hard to read completely. I didn’t find any evidence of change to this with some searches. Does anyone have an idea? In theory it could be left over from a previous request as we are looking at a Keep-alive connection. The fact that there is no newline before the GET makes that less likely. ---
**Author:** ![Ian](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/ian/32/1026_2.png) [@Ian](https://swi-prolog.discourse.group/u/Ian)\ **Post date:** [November 29, 2023, 10:47am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/16 "2023-11-29T10:47:06Z")
From previous post, it looks like the OP is using the http\_client libraries in SWI to call back into itself, so maybe there is a bug in the client libraries where the method ends up not being the first part of the request. Maybe the OP can show the http\_get call? ---
**Author:** ![heiheshang](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/heiheshang/32/4419_2.png) [@heiheshang](https://swi-prolog.discourse.group/u/heiheshang)\ **Post date:** [November 29, 2023, 10:52am UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/17 "2023-11-29T10:52:32Z")
> [@heiheshang](#): > > `%7D` ```prolog :- http_handler(root(courier), http_reply_from_files(static_dir(.), [cache(true)]), [prefix]). :- http_handler(root(.), http_reply_from_files(static_dir(.), [cache(true)]), [prefix]). ``` I have this code ---
**Author:** ![jan](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/jan/32/4_2.png) [@jan](https://swi-prolog.discourse.group/u/jan)\ **Post date:** [November 29, 2023, 12:13pm UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/18 "2023-11-29T12:13:45Z")
We have seen that, but it seems there is an invalid _request_. What created that? It you want this sorted out, you’ll have to produce a setup that allows others to reproduce what is happening, including the client side in this case as that looks suspicious. Alternatively, use/add the Prolog debugging services, network sniffers, etc. to figure out what is wrong. This seems a weird issue. It is very hard to debug such things from little bits of information without access to the whole story. It asks others to guess and try to reconstruct the whole picture, which is time consuming and most of the time we’ll get it wrong and make the wrong assumptions. ---
**Author:** ![heiheshang](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/heiheshang/32/4419_2.png) [@heiheshang](https://swi-prolog.discourse.group/u/heiheshang)\ **Post date:** [November 29, 2023, 12:19pm UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/19 "2023-11-29T12:19:49Z")
the request comes from an external system. My page is displayed in a frame. Could this be related? ---
**Author:** ![EricGT](https://avatars.discourse-cdn.com/v4/letter/e/f1d935/32.png) [@EricGT](https://swi-prolog.discourse.group/u/EricGT)\ **Post date:** [November 29, 2023, 12:21pm UTC](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003/20 "2023-11-29T12:21:10Z")
For more details on what can help us please read: [Minimal and reproducible working examples](https://swi-prolog.discourse.group/t/minimal-and-reproducible-working-examples/2447) [Next page](https://swi-prolog.discourse.group/t/web-server-i-cant-figure-out-how-to-do-it/7003.md?page=2)