frontend http
bind *:80
frontend http
bind *:80
acl mpd path_end -i .mpd
acl test hdr(host) test.usp.com https://test.usp.com
use_backend internal if test mpd
backend internal
http-request set-path /vod/
server testirdeto.test.com 172.28.1.16:80 checkHi,
You may redirect specific request to a specific backend server based on the URL using ACLs. To achieve this, you might want to use the path fetch methods in the test criterion of the ACL such that the ACL returns true if the criterion is satisfied.
The path method extracts the request’s URL path, which starts at the first slash and ends before the question mark (without the host part) and matches it with the value provided in the ACL. Depending on your requirements, you may also make use of other path method derivatives such as path_beg, path_end and path_sub to extract and match the prefix, suffix and a sub-string present in the URL.
Below is a sample configuration using the Path fetch method:
frontend http
acl cond1 path -i /app1/abc.html ##This ACL returns true if the URL path extracted from the request by the path directive matches the value "/app1/abc.html" ##
acl cond2 path -i /app2/def.html
use_backend be_app1 if cond1 ## The backend be_app1 is used whenever the ACL cond1 is TRUE
use_backend be_app2 if cond2
backend be_app1
balance roundrobin
server srv1 XX.YY.ZZ:PP ## Please replace XX.YY.ZZ with the server IP and PP with the port
server srv2 XX.YY.ZZ:PP
backend be_app2
balance roundrobin
server srv3 XX.YY.ZZ:PP
server srv4 XX.YY.ZZ:PP
Please feel free to revert to this post if you have any queries or any specific requirement pertaining to this answer.
Thanks
HAPROXY configuration:
frontend http
bind *:80
acl mpd path_end -i .mpd
acl test hdr(host) test.usp.com https://test.usp.com
use_backend internal if test mpd
backend internal
http-request set-path /vod/
server testirdeto.test.com 172.28.1.16:80 checkUpdated the correct comment
Hello Shivraj,
Thank you for the explanation. I am new to HAPROXY and little bit confused.
Below are the details for what i want to achieve with the help of HAPROXY.
I have one webserver for example https://test.com and I want whenever request goes for https://test.com/video/widevine.ism/8.mpd. I require HAPROXY will redirect it to the other server on the specific directory http://test.internal.com/vod/widevine.ism/8.mpd. So that the requested file by the https://test.com server can be served by the http://test.internal.com server.
I tried below settings in HAPROXY configuration file:
bind *:80
acl mpd path_end -i .mpd
acl test hdr(host) test.com https://test.com
use_backend internal if test mpd
backend internal
reqirep set-path var/www/usp/vod/widevine.ism/8.mpd
server test.com 172.28.1.16:80 check
However unfortunately 
it is not redirecting
Can you please help me with this.
Hi Priyanshu,
Apologies for the delayed response !!
As i can see in your configuration, the set-path keyword is incorrectly used with reqirep directive. I have gone through the HAProxy documentation but i could not find any mention or usage of set-path keyword with reqirep directive. Not sure if this usage is allowed !
However, based on your requirements, you can achieve the desired redirection using below configuration.
global
log 127.0.0.1:514 local0
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
stats timeout 30s
user nobody
group nobody
daemon
stats socket /var/lib/haproxy/stats mode 600
defaults
mode http
log global
option httplog
option dontlognull
option http-server-close
option redispatch
retries 3
timeout connect 10s
timeout client 1m
timeout server 1m
option forwardfor except 127.0.0.0/8
frontend ft
bind www.test.com:80
bind test.internal.com:80
acl acld hdr(host) -i www.test.com
acl aclp path -i /video/widevine.ism/newindex.html
reqrep ^([^\ ]*)\ /video/(.*) \1\ /vod/\2 if acld aclp
http-request redirect code 301 location http://test.internal.com/vod/widevine.ism/newindex.html if acld aclp
## redirect prefix test.internal.com code 301 if acld1 aclp ## This is an alternate that can be used in place of above line. ##
default_backend bt2
backend bt2
balance roundrobin
cookie SEREVR_ID insert nocache indirect
server test.example2.com test.example2.com:80 cookie SERVER1
Please note, you may either use http-request redirect or redirect prefix directive to perform redirection as described in the comment in the configuration file.
As shown in below haproxy.log screenshot, a user with URL www.test.com/video/widevine.ism/newindex.html is redirected to test.internal.com/vod/widevine.ism/newindex.html
Hope this is helpful !
Hello Shivharsh, I stumbled on this post and this something similar to what I am trying to do. I am trying to serve live video channels that I have configured on two backend servers that are configured to serve these requests in the format of following URLs. I am trying to use haproxy as a virtual URL like http://virutalIP/livechannelA/playlist.m3u8 and to forward this to real server http://realserverip/livechannelA/playlist.m3u8. Since the videos are bandwidth intensive, I just need simple round-robin redirects from virtual URL to each physical server. There are close to 10 channels on each server. My main concern is that when the video starts, nothing should pass through haproxy. Is this possible using the method you described above? Sorry, I am new to haproxy and any help is appreciated.
Hello Shivharsh,
Thank you for your response.
Meanwhile I resolved the problem using the apache redirection and it is working fine.
I will try to configure the HAPROXY with the configuration suggested by you and update you if it works fine.
Thanks
