Lighttpd

Hello Al,

Recently I started working with "lighttpd" webserver to host local webserver to place some files. I am using Ubuntu 20.04 machine within the docker container. I am following this guide [[https://wiki.archlinux.org/title/lighttpd]] . I have installed lighttpd package using apt install lighttpd . The lighttpd.conf looks like:

server.modules = (
        "mod_indexfile",
        "mod_access",
        "mod_alias",
        "mod_redirect",
)

server.document-root        = "/var/www/html" 
server.upload-dirs          = ( "/var/cache/lighttpd/uploads" )
server.errorlog             = "/var/log/lighttpd/error.log" 
server.pid-file             = "/run/lighttpd.pid" 
server.username             = "www-data" 
server.groupname            = "www-data" 
server.port                 = 81
server.bind                 = "localhost" 
server.tag                  = "lighttpd" 

# strict parsing and normalization of URL for consistency and security
# https://redmine.lighttpd.net/projects/lighttpd/wiki/Server_http-parseoptsDetails
# (might need to explicitly set "url-path-2f-decode" = "disable" 
#  if a specific application is encoding URLs inside url-path)
server.http-parseopts = (
  "header-strict"           => "enable",# default
  "host-strict"             => "enable",# default
  "host-normalize"          => "enable",# default
  "url-normalize-unreserved"=> "enable",# recommended highly
  "url-normalize-required"  => "enable",# recommended
  "url-ctrls-reject"        => "enable",# recommended
  "url-path-2f-decode"      => "enable",# recommended highly (unless breaks app)
 #"url-path-2f-reject"      => "enable",
  "url-path-dotseg-remove"  => "enable",# recommended highly (unless breaks app)
 #"url-path-dotseg-reject"  => "enable",
 #"url-query-20-plus"       => "enable",# consistency in query string
)

index-file.names            = ( "index.php", "index.html" )
url.access-deny             = ( "~", ".inc" )
static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )

compress.cache-dir          = "/var/cache/lighttpd/compress/" 
compress.filetype           = ( "application/javascript", "text/css", "text/html", "text/plain" )

# default listening port for IPv6 falls back to the IPv4 port
## Use ipv6 if available
#include_shell "/usr/share/lighttpd/use-ipv6.pl " + server.port
include_shell "/usr/share/lighttpd/create-mime.conf.pl" 
include "/etc/lighttpd/conf-enabled/*.conf" 

#server.compat-module-load   = "disable" 
server.modules += (
        "mod_compress",
        "mod_dirlisting",
        "mod_staticfile",
)

Also I have a simple HTML file in /var/www/html/ to display Hello World!

But when I start lighttpd using /etc/init.d/lighttpd start I get:

(network.c.311) can't bind to socket: 127.0.0.1:81 Address already in use

And when I open browser (ex, chrome) and launch localhost:81 , it shows This site can’t be reached. localhost refused to connect.

I tried with /etc/init.d/lighttpd stop and started again but it results in the same error.

When I do netstat -ntulp :

Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      -
tcp        0      0 127.0.0.1:81            0.0.0.0:*               LISTEN      -

I expected a PID should have been assigned to lighttpd

Can anyone please let me know what is the issue here and how can it be resolved?

Thanks in advance.

P.S: Please let me know if any info is missing here.