Apologies if this is obvious, but have you checked to see whether some other process is already listening on port 443? On a Linux server, it looks to me like you should be able to see what processes are listening on what ports by running
sudo netstat -tulpn Also, you don’t mention what the result of running on port 8000 is. Best, John > On Jan 10, 2019, at 12:50, Don Green <infodeveloper...@gmail.com> wrote: > > I could use some help narrowing down this problem using plt-web-server: > Context: > I can successfully run all code described in: Continue: Web Applications in > Racket, Chapters 1 through 17. > However, 'Chapter 18: Using HTTPS' where I run plt-web-server is giving me a > problem. > (I am using OS:Linux/Ubuntu 16.04). > > I suspect that I: > (a) may be misusing plt-web-server; or > (b) have not actually installed my server-cert.pem properly even though > the verification operation indicates a successful installation: > openssl verify -CApath /etc/ssl/certs server-cert.pem > returns: > server-cert.pem: OK > ;or > (c) may have some other problem. > --------------------------------------------- > From: .../collects/DG/programs/processorX/URL/proc/proc-url/proc-url.ss > When I run plt-web-server from a terminal, at a $ prompt, in my application > directory: > $ plt-web-server --ssl > > I get the message: > > tcp-listen: listen failed > port number: 443 > system error: Address already in use; errno=98 > context...: > .../more-scheme.rkt:261:28 > /usr/share/racket/pkgs/compatibility-lib/mzlib/kw.rkt:468:41: run-server > > Or > When I run plt-web-server from a terminal, at a # prompt, in my application > directory: > # plt-web-server --ssl > > I get no feedback, and eventually close the terminal. > --------------------------------------------- > Q. I believe the port: 443 is a root level port, therefor I suspect I am > expected to run plt-web-server as root. > That is the only reason I am trying to run it from a # prompt. > I have also tried running: $plt-web-server -p 8000 --ssl > because I believe the 8000 port is not a root level port. > Comments? > > Q. Can I run 'plt-web-server --ssl' from a terminal opened to any directory > because it will, by default, refer to > .../default-web-root/configuration-table.rkt? > configuration-table.rkt contains line: (default-indices "index.html" > "index.htm"), so I'll be happy to see that file displayed in my firefox > browser. > > Q. Do I have to make a firefox-specific configuration regarding the > server-cert.pem file? > > Q. I understand how to run my application as a servlet using racket -t > <file.rkt>. > When I get one of these running properly: > $plt-web-server --ssl > or > $plt-web-server [-f <filename> -p <port> -a <ip-address> --ssl] > where do I specify <my-app-file.rkt>? ...that I used when calling servlet > with 'racket -t <file.rkt>'. > Seems that plt-web-server only runs either the default > configuration-table.rkt or another configuration-table.rkt from > another location if I specify it in the -f <filename> argument. > > Thanks > Don. > > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
