# Issue with Netcgi-apache **URL:** \ **Category:** Ecosystem\ **Tags:** ocamlnet\ **Created:** [February 17, 2024, 8:52pm UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106 "2024-02-17T20:52:11Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Frederic\_Loyer](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/frederic_loyer/32/3472_2.png) [@Frederic\_Loyer](https://discuss.ocaml.org/u/Frederic_Loyer)\ **Post date:** [February 17, 2024, 8:52pm UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/1 "2024-02-17T20:52:11Z")
I have installed on a Debian system the package `libocamlnet-ocaml-dev`. I brings `/usr/lib/ocaml/netcgi2-apache/netcgi2-apache.cma` and several other caml archives. However, the name in the META file is `netcgi_apache`. Then when I set the Ocaml/Apache module to load `netcgi2-apache` there is an error because `netcgi_apache.cma` is not found. I have managed to fix this issue with a symlink and make the library available with the two names. Now, I am trying to use the `Netcgi_apache` module. I have: ```shell loyer@ks3001154:~/public_html/ocaml$ ocamlc /usr/lib/ocaml/netcgi2-apache/netcgi_apache.cma essai.ml File "essai.ml", line 1, characters 19-36: 1 | let process (cgi : Netcgi_apache.cgi) = ^^^^^^^^^^^^^^^^^ Error: Unbound module Netcgi_apache loyer@ks3001154:~/public_html/ocaml$ ocamlc /usr/lib/ocaml/netcgi2-apache/netcgi2-apache.cma essai.ml File "essai.ml", line 1, characters 19-36: 1 | let process (cgi : Netcgi_apache.cgi) = ^^^^^^^^^^^^^^^^^ Error: Unbound module Netcgi_apache ``` Shouldn’t the `netcgi2-apache.cma` bring the require module ? I note that I have ` /usr/lib/ocaml/netcgi2-apache/netcgi_apache_mod.mli` and its `.cmi`, but not its implementation (`.cma`) ---
**Author:** ![dbuenzli](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/dbuenzli/32/18_2.png) [@dbuenzli](https://discuss.ocaml.org/u/dbuenzli)\ **Post date:** [February 17, 2024, 9:06pm UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/2 "2024-02-17T21:06:08Z")
The compiler needs to see the `.cmi` file of the module `Netcgi_apache`. Something like: ```auto ocamlc -I /usr/lib/ocaml/netcgi2-apache/ /usr/lib/ocaml/netcgi2-apache/netcgi_apache.cma essai.ml ``` should work. ---
**Author:** ![UnixJunkie](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/unixjunkie/32/638_2.png) [@UnixJunkie](https://discuss.ocaml.org/u/UnixJunkie)\ **Post date:** [February 20, 2024, 12:20am UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/3 "2024-02-20T00:20:44Z")
You don’t use dune to compile your project? ---
**Author:** ![Frederic\_Loyer](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/frederic_loyer/32/3472_2.png) [@Frederic\_Loyer](https://discuss.ocaml.org/u/Frederic_Loyer)\ **Post date:** [February 20, 2024, 12:33am UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/4 "2024-02-20T00:33:05Z")
I have tried manually because dune seems to use the opam directory path… and hasn’t worked either. Note, the proposed -I /path\_to\_netcgi2-apache doesn’t work. I guess, I will try to recompile the module in the Debian way and see how it has been done. ---
**Author:** ![UnixJunkie](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/unixjunkie/32/638_2.png) [@UnixJunkie](https://discuss.ocaml.org/u/UnixJunkie)\ **Post date:** [February 20, 2024, 2:49am UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/5 "2024-02-20T02:49:57Z")
Maybe, ask Gerd Stolpman (the maintainer of ocamlnet) or in the ocamlnet-devel mailaing list or open an issue in there: > **[Issues · Gerd Stolpmann / lib-ocamlnet3 · GitLab](https://gitlab.com/gerdstolpmann/lib-ocamlnet3/-/issues)** > > This is the new home of Ocamlnet, replacing the svn repo [https://sourceforge.net/p/ocamlnet/mailman/ocamlnet-devel/](https://sourceforge.net/p/ocamlnet/mailman/ocamlnet-devel/) ---
**Author:** ![yawaramin](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/yawaramin/32/3384_2.png) [@yawaramin](https://discuss.ocaml.org/u/yawaramin)\ **Post date:** [February 20, 2024, 3:59am UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/6 "2024-02-20T03:59:21Z")
If you are not strongly tied to Netcgi-apache, I would actually strongly recommend the Dream web framework: [Dream — Tidy, feature-complete web framework](https://aantron.github.io/dream/) It’s very easy to get started: ```auto let () = Dream.run @@ Dream.logger @@ Dream.router [ Dream.get "/" (fun _ -> Dream.html "hello world"); ] ``` And of course, you get a standalone executable which is a nice bonus. ---
**Author:** ![dbuenzli](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/dbuenzli/32/18_2.png) [@dbuenzli](https://discuss.ocaml.org/u/dbuenzli)\ **Post date:** [February 20, 2024, 7:36am UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/7 "2024-02-20T07:36:17Z")
> [@Frederic\_Loyer](#): > > Note, the proposed -I /path\_to\_netcgi2-apache doesn’t work. What is the error you get ? The same error ? According to what I see [there](https://packages.debian.org/en/bookworm/amd64/libocamlnet-ocaml-dev/filelist) the `.cmi` should be there. Oherwise something like `ocamlfind ocamlc -linkpkg -package netcgi2_apache test.ml` will likely be easier. ---
**Author:** ![Frederic\_Loyer](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/frederic_loyer/32/3472_2.png) [@Frederic\_Loyer](https://discuss.ocaml.org/u/Frederic_Loyer)\ **Post date:** [February 20, 2024, 9:48am UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/8 "2024-02-20T09:48:02Z")
```auto $ ocamlfind ocamlc -linkpkg -package netcgi2_apache main.ml ocamlfind: Package `netcgi2_apache' not found $ $ ocamlc -I /usr/lib/ocaml/netcgi2-apache netcgi2_apache.cma main.ml File "main.ml", line 1, characters 18-28: 1 | let process (cgi: Netcgi.cgi) = ^^^^^^^^^^ Error: Unbound module Netcgi ``` I have though about the dream server, but can’t start it: ```t $ cat /etc/systemd/system/dream.service [Unit] Description=Dream server After=network.target [Service] Type=simple Restart=on-failure User=loyer # ensure minimal access to system Group=nobody ExecStart=/home/loyer/dream_server/_build/default/bin/server.exe StandardOutput=file:/var/log/dream.log StandardError=file:/var/log/dream.log PrivateTmp=yes # hide contents of /tmp from other processes on system [Install] WantedBy=multi-user.target $ sudo systemctl start dream $ sudo systemctl status dream ● dream.service - Dream server Loaded: loaded (/etc/systemd/system/dream.service; disabled; vendor preset: enabled) Active: failed (Result: exit-code) since Tue 2024-02-20 10:46:23 CET; 15s ago Process: 1810506 ExecStart=/home/loyer/dream_server/_build/default/bin/server.exe (code=exited, status=217/USER) Main PID: 1810506 (code=exited, status=217/USER) CPU: 13ms févr. 20 10:46:23 my_host.com systemd[1]: dream.service: Scheduled restart job, restart counter is at 5. févr. 20 10:46:23 my_host.com systemd[1]: Stopped Dream server. févr. 20 10:46:23 my_host.com systemd[1]: dream.service: Start request repeated too quickly. févr. 20 10:46:23 my_host.com systemd[1]: dream.service: Failed with result 'exit-code'. févr. 20 10:46:23 my_host.com systemd[1]: Failed to start Dream server. ``` (and there are no `/var/log/dream.log` file. I have tried to change le log file (where the user has write rights… but it doesn’t change anything) ---
**Author:** ![dbuenzli](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/dbuenzli/32/18_2.png) [@dbuenzli](https://discuss.ocaml.org/u/dbuenzli)\ **Post date:** [February 20, 2024, 10:08am UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/9 "2024-02-20T10:08:21Z")
> [@Frederic\_Loyer](#): > > ```auto > $ ocamlfind ocamlc -linkpkg -package netcgi2_apache main.ml > ocamlfind: Package `netcgi2_apache' not found > > ``` Maybe it’s called differently try `ocamlfind list` to see the list of packages, also maybe that’s looking up in your opam, `ocamlfind printconf` / `command -v ocamlfind` will tell you that. You may want to try with `/usr/bin/ocamlfind`. > [@Frederic\_Loyer](#): > > ```auto > $ $ ocamlc -I /usr/lib/ocaml/netcgi2-apache netcgi2_apache.cma main.ml > File "main.ml", line 1, characters 18-28: > 1 | let process (cgi: Netcgi.cgi) = > ^^^^^^^^^^ > Error: Unbound module Netcgi > > ``` I guess by now you should see the pattern here. You need to [locate](https://packages.debian.org/en/bookworm/amd64/libocamlnet-ocaml-dev/filelist) the `netcgi.cmi` file and add its directory to the includes, you will likely also need to add the cma that holds this module on the cli. ---
**Author:** ![dbuenzli](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/dbuenzli/32/18_2.png) [@dbuenzli](https://discuss.ocaml.org/u/dbuenzli)\ **Post date:** [February 20, 2024, 10:17am UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/10 "2024-02-20T10:17:45Z")
> [@Frederic\_Loyer](#): > > ```auto > User=loyer # ensure minimal access to system > Group=nobody > > ``` Didn’t look far but this 217/user error seems to be about inexistent user. I suspect it’s because `loyer` doesn’t belong to the `nobody` group. ---
**Author:** ![Frederic\_Loyer](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.ocaml.org/frederic_loyer/32/3472_2.png) [@Frederic\_Loyer](https://discuss.ocaml.org/u/Frederic_Loyer)\ **Post date:** [February 20, 2024, 11:10am UTC](https://discuss.ocaml.org/t/issue-with-netcgi-apache/14106/11 "2024-02-20T11:10:25Z")
> [@dbuenzli](#): > > Didn’t look far but this 217/user error seems to be about inexistent user. I suspect it’s because `loyer` doesn’t belong to the `nobody` group. I have get it work. Simply, ```auto User=loyer # ensure minimal access to system ``` Try to find a `loyer # ensure minimal access to system` user which doesn’t exist. I had just to suppress the comment.