I have just installed HAproxy on a server which should do nothing to serve as redirection endpoint of any incoming naked domain request (http and https), to the www.-version. Just like the service wwwizer.com. This is my cfg:
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
# Default SSL material locations
ca-base /etc/ssl/certs
crt-base /etc/ssl/private
# Default ciphers to use on SSL-enabled listening sockets.
# For more information, see ciphers(1SSL). This list is from:
# https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/
ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS
ssl-default-bind-options no-sslv3
defaults
log global
mode http
option httplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
errorfile 400 /etc/haproxy/errors/400.http
errorfile 403 /etc/haproxy/errors/403.http
errorfile 408 /etc/haproxy/errors/408.http
errorfile 500 /etc/haproxy/errors/500.http
errorfile 502 /etc/haproxy/errors/502.http
errorfile 503 /etc/haproxy/errors/503.http
errorfile 504 /etc/haproxy/errors/504.http
frontend http
bind *:80
bind *:443
acl has_www hdr_beg(host) -i www
http-request redirect code 301 location www.%[hdr(host)]%[req.uri] unless has_www
I have the A record of my domain DNS pointing to the IP of the server. However if I goto http://exmaple_url.com I get forwarded to: http://exmaple_url.com/www.exmaple_url.com instead of just http://www.exmaple_url.com
What am I doing wrong?
I followed the instruction in the documentation: https://www.haproxy.com/doc/aloha/7.0/haproxy/http_redirection.html
I expect adding https:// to the redirect location is the fix you need:
http-request redirect code 301 location https://www.%[hdr(host)]%[req.uri] unless has_www