ocsigenserver: You are not allowed to use port 80

Question

When I run make run.byte I get this error ocsigenserver: ocsigen:main: Fatal - You are not allowed to use port 80.. I've tried sudo make run.byte but sudo doesn't know about opam or ocsigenserver. I've tried to play with wwwuser in the Makefile.options, but I can't make it work. The README generated by the distillery doesn't give much information, and I can't find anything online.

make test.byte works just fine.

Any idea please?

edit: It looks like it has nothing to do with eliom/ocaml, non root users just can't run anything on ports lower than 1024 on Ubuntu. But I still don't understand why the distillery suggests that I can do it if my wwwuser is me, I don't think there's any way this is ever going to work. I also don't understand how I am supposed to run sudo make run.byte, opam is installed in my ~ directory, sudo cannot find ocsigenserver. I could make it work by running everything as root, but anytime I run an opam command as root I get the you shouldn't use opam as root warning. I don't think this is the way I'm supposed to run it. Something's not right.

Answer 1

With previous release of eliom (eliom.5.0.0) - I have not used yet the fresh 6.0.0 release - you have to install first your eliom application :

sudo make install

Then you have to kill the process listening to the 80/tcp port (ex: sudo netstat -tulpn 80 | grep :80 will help identify the process listening to that port - most likely apache2 or lighthttpd).

Then, you run your executable:

sudo PATH=$PATH OCAMLPATH=$OCAMLPATH LD_LIBRARY_PATH=$LD_LIBRARY_PATH make run.byte

This is what is written in README created with eliom-distillery - but take care to set your env variables before :

 OCAMLPATH is the location of ocaml used in your env (in my env :~/.opam/4.02.3/bin). 
 LD_LIBRARY_PATH : .opam/4.02.3/lib/stublibs (otherwise dllssl_threads_stubs is not found)