Haproxy rename header. 4, HAProxy Enterprise 2.

Haproxy rename header Help! 2: 1036: January 20, 2022 Hello, I am a novice in Haproxy : in my current configuration, http is redirected to https but I would like to redirect non www to www. Help! 1: 1437: December 10, 2022 Compare header/vaules against a map I am working with Haproxy and need to read the v2 header from TCP stream, according to spec it is supposed to have first 13 bytes following: \x0D\x0A\x0D\x0A\x00\x0D\x0A\x51\x55\x49\x54\x0A\x02 in I'd like to add an acl rule to capture the existence of a header name that matches the following regex: ^X-\w+-Signature (or whatever wildcard). Regards, -Srini. Besides, I don’t see why haproxy would need proxy-authorization. 2. I have figured out a part of the solution using the http-request set-header directive but I am not sure how to read the cookie and store it in a variable to use with the set HAProxy - Add response header to indicate the server that was chosen. It can also be configured to automatically upgrade the quality of files already Topic Replies Views Activity; Customize error page by haproxy. option forwardfor This post describes how haproxy forwards request with header to AWS Application Loadbalancer (ALB). Use SimpleHTTPServer to dump So the idea of his answer is to add a custom Host header which value is the source hostname itself. I guess url_param is only available for the requested URL, and not possible to use for HTTP Header values? If so, what (See "-L" in the management guide. My homeserver is, then, connected to a VPS via WireGuard which also has HAProxy installed. Is there any workaround to achieve this or is there any feature request available for this purpose? connection header has gone if server send response with connection: keep-alive. Help! watcher666 February 7, 2020, 7 Best way to delete a cookie? Help! 2: 4788: January 8, 2021 Remove server info from haProxy headers. Light. HAProxy Technologies has announced that HAProxy 2. When I use: option forwardfor header X-Client-IP option http-server-close I used the following haproxy configuration in frontend to modify the response header of requests depending on a query string: frontend my-frontend acl is-foo urlp(foo) 1 http-response replace-header Set-Cookie "(. Meaning, that HTTP requests only work if the host header is suffixed by internal-address, (like: Host: login. I tried: http-request set-header X-Port %[src_port] and it seems to work well! Just like in 1. I use these rules in the backend section. I mean, I want HAProxy to route requests to a certain service based on header presence and value rather than hostname. aspx http-check expect status 200 server adfs01 10. In this example, it’s set to example. git/blob - doc/internals/connection Hello, We use a HAProxy loadbalancer in TCP mode with behind it a HAProxy reverse proxy in HTTP mode. The string will be truncated on the right if it exceeds <length>. com sni ssl_fc_sni inter 3s rise Now, my HAProxy can deliver the following information to my web server: ssl_fc: did the client used a secured connection (1) or not (0). use_backend lb_test if the_param2--- ha-proxy backend ---backend lb_test. Everything works fine as long as a user does not try to log into both applications in the same browser. This is my test configuration file: defaults mode http timeout client 300000 timeout server 300000 timeout connect 5000 listen header_test bind :60001 mode http no log monitor-uri / http-response set-header My-Header some-value According to the 1. http-response replace-header <name> <regex-match> <replace-fmt> [ { if | unless } <condition> ] This works like "http-request replace-header" except that it works on the server's response instead of the client's request. 1 and sending meaningful Host header is a mast in your case. See http-response replace-header and http-response replace-value. Hi, I have the following test installation on HA-Proxy version 2. Here is our current backend section of the config: backend apiservers balance leastconn mode http option httpchk GET /healthz What I mean is that a client firewall is receiving an HTTP packet forwarded from HAproxy with two headers: 1) X-Forwarded-For (this header doesn’t contain real client IP but an IP from our router) 2) X-Original-Forwarded-For (this header contains real client IP which visits our website) The question is how to copy the real client IP from X-Original-Forw HAProxy HAProxy inserts headers in response with "http-request set-header" directive. What the sending application is expecting is to see in the response is the “Connection: keep-alive” header, but via the HAProxy, this header is stripped out in the response. maxhdr 1000 tune. hdr(Host) -m found http-request del-header Host if h_host_exists http-request set-header Host expected-name. 145. 3,727 4 4 gold "Using "reqadd"/"reqdel"/"reqrep" to manipulate request headers is discouraged in newer versions (>= 1. My setup is slightly complicated. X-Frame-Options has been obsoleted by CSP, but may still be set for backwards compatibility reasons. process-vary: Available since HAProxy 2. It can be used to override the default TL;DR – option forwardfor and http-request set-header X-Real-IP %[src] are not working. lukastribus February 5, 2024, 9:09am 2. lukastribus November 20, 2021, 5:01pm 2. Pls help me out. 0 Using HAProxy v1. May be used in sections : X-My-Header: foo - valid; X-My-Header: bar - valid; X-My-Header: foo,bar - valid; X-My-Header: bar,foo - valid; X-My-Header: bar,something,foo - NOT valid; What I get: Actually all requests are considered to be valid if AT LEAST one of ‘foo’, ‘bar’ present in the header value. RP server simple send all I'm using HaProxy as a reverse proxy and load balancer for three servers. Unfortunately, at the time of writing, this is only available when HAProxy gets traffic from a backend. Also, wouldn't modifying headers result in Your HAProxy load balancer may only ever need to relay traffic for a single domain name, but HAProxy can handle two, ten, or even ten million routing rules without breaking a sweat. I’m doing the following to redirect non-https traffic to https: redirect scheme https code 301 if !{ ssl_fc } Which works great, however if a user injects a Host header they are redirected to that URI rather than the target. Toni November 24, 2021, 10:44pm 3. req. When the request is processed in HAProxy I like to retrieve query parameter and add an Authorization header using the parameter value. Turn on or off the processing of the Vary header in a response. Try renaming the backends so they arnt the same as the text you match. HAProxyConf 2025 - Call for Papers is Open! HAProxy Kubernetes Ingress Controller Theme. Multi-process or multi-threaded models can rarely cope with thousands of connections because of memory limits, system scheduler limits, and lock contention everywhere. 2 as a front end for some legacy windows applications. " (or "redirect") is a final directive on a frontend there is no backend response in this case. TLS is Proxy-Authorization requires haproxy to strip the header (as it is a hop-by-hop instead of end-to-end), as well as a “407 Proxy Authentication Required” response instead of a “401 Unauthorized”. 1. Modified 6 years, 7 months ago. In solution one, basically, he set the header manually with a condition from I have response header: Location: https://app1. SECRET = "SECRET_VALUE"; If the HTTP header request does not have that value, the request is denied. The module will add these to an Access-Control-Allow-Methods header in response to a CORS preflight request. On this page. The example from the docs is: # check HTTP and HTTPs services on a server. 9 Configuration Manual: capture request header <length> is the maximum number of characters to extract from the value and report in the logs. This argument detects both Proxy Protocol version 1 (text format) and Proxy Protocol version 2 (binary format). 1 Haproxy will not strip this header. cyrano330 February 5, 2024, 11:42am 3. HAProxy with multiple backends True-Client-IP provides the original client IP address to the origin web server. Improve this answer. *) https://app1. Thank you. Enabling HSTS in HAProxy is very simple. com. Is there a way to modify this behavior? (I am aware that headers are supposed to be case-insensitive, unfortunately we have a legacy application that only supports a specific case in a specific header. 0 Dynamic server name and header in HAProxy. Related topics Topic Replies So my question is whether it is possible in HAProxy 1. I am looking for an approach similar to this below, where I can "roundrobin" between backend servers, but each server needs a different HTTP header: Syntax for adding response headers in haproxy. I’ve verified that it is using the correct backend when requests go to www. acl h_host_exists req. Plan to use http-request set-header Host host. # first open port 80 thanks to server line port directive, then # tcp-check opens port 443, ciphered and run a request on it: option httpchk http-check connect http-check send meth GET uri / ver HTTP/1. com → HAProxy magic → <s:Envelope ><s:Header><id>123456</id> <s:Header > <s:Envelope >. It obviously Configure the Strict-Transport-Security header. You can add more domains, separating them with commas. Can be useful in the case you specified a directory. test. g. stage. This is not advisable; haproxy is a reverse proxy/load balancer, not a forwarding proxy like squid. I need to provide X-Forwarded headers for an application (kimai 2) I just installed inside a container in my proxmox server. My-Customer-Header: My-Test:abc,def,ghi,jkl:12345 Using this reg I have an acl: acl srv_all hdr_end(host) -i mydomain. 0:2000 mode Each request gets a header of X-tracer-tag: with the haproxy-id, high bytes and low bytes in hex, concatenated and the number gets incremented (implementation bumps first). 0. Some I need to load balance 3rd party services using HAProxy 1. The header is as https://135. Dear all, I have Is there a way to rewrite the response header? Thanks for all the ideas! greeting cyrano330. I'm doing Websocket request that currently (at least on javascript) won't support custom headers. us-east-1c. token) str(""),lua. domain. neerajkhandelwal August 14, 2019, 12:14pm 3. 135:91? Then stop terminating SSL and just connect the two without SSL termination, that is, without ssl keyword and certificate configuration. For some reason why I do this half of my logs are empty. 0:8 Now, I need to read that cookie within HAProxy, extract the jwt_token key and add a custom header called jwt_token and assign the value eyBGfdr and finally forward the request to some other service. Help! heribert August 16, 2021, 3:59pm 1. " – Andrey Regentov. example configuration file and rename it config. cfg (I've left out some SSL details and multiple backends that I believe are not relevant to my problem) global log 127. 50. 0/8 option redispatch retries 3 timeout http-request 10s timeout queue 1m Something like this should do it: http-response replace-header Location https:\/\/app1\. SC i’ve got reported issue with plugin ID 12224 and I need to remove from headers information about responding server from load balancing. I have an assignment, where I need to inspect each and request coming into my application and I need to look for a specific header (let's say Accept header) and I need to modify the value of header from A --> B. 0. Here a link which shows the header limits on different servers Maximum HTTP request header size defaults compared across web servers The host header specifies which website or web application should process an incoming HTTP request. You can add, set, delete, or replace these headers according to needs or preferences. The changelog shows you an in-depth list of changes included in this version of HAProxy Kubernetes Ingress Controller. ssl_c_s_dn(cn): same as above, but extracts only the Common Name Hi, folks! Is there is a way to send real backend address as a Host header in the httpchk requests? We are currently using HTTP 1. php with method POST. My workaround: On first request I request the basic auth (works) Can't remove just one Set-Cookie header in HAProxy 2. create_access_token http-request add-header "Authorization Bearer" %[var(req. Share. 1 HAproxy: Redirect to https in backend. Then SNI is never touched because the TCP payload is unchanged. 5-dev19 2013/06/17 that accepts requests only for a certain internal domain, let's call it: internal-address. In v3 of the API we introduce a number of breaking changes to improve API usability and readability. However, the Lua allows to do blocking actions. Above the http-request redirect I have http-response set-header Strict-Transport-Security 'foo bar', but the header is not set in the 302 response. "http-request redirect . pid maxconn 1000 user haproxy group haproxy daemon stats socket /var/lib/haproxy/stats defaults mode http log global option httplog option dontlognull option http-server-close option forwardfor except 127. This is my configuration: # Check if CF header set acl is_real_ip hdr_ip(CF-Connecting-IP) -m len 0 # Header set, set txn. com:443 ssl - MEDIUM: sample: Add IPv6 support to the ipmask converter - MINOR: spoe: Add max-waiting-frames directive in spoe-agent configuration - MEDIUM: spoe: Use an ebtree to manage idle applets - MINOR: spoe: Count the number of frames waiting for an ack for each applet - MINOR: spoe: Replace sending_rate by a frequency counter - MINOR: spoe: Always 2024/07/18 : 2. rspadd Access-Control-Allow-Origin:\ * But still it is not adding response headers in api call. net, but the host header is something like www. hdr(0) -m found } rspadd Access-Control-Allow-Headers:\ Origin,\ X-Requested-With,\ Content-Type,\ Accept Consider the following HAProxy Config: frontend front default_backend default backend default balance roundrobin http-response set-header X-RGN us-east-1 server app-1a app. 5 and have some basic rate limiting configured like this (the actual configuration contains more rules for different urls): backend test acl rate_limit_by_ip_exceeds_limit src,table_http_req_rate(rate_limit_by_ip) gt 100 http-request deny deny_status 429 if rate_limit_by_ip_exceeds_limit http-request track-sc0 src table I want to set a custom header on the HAProxy monitor response. 8 documentation, http-response is supported How are request headers handled in HAProxy? HAProxy lets you inspect and manipulate request headers in numerous ways. HAProxy K8s Ingress Controller; Overview; Community. It's also possible to capture a request header. 1 local1 notice #log loghost local0 info maxconn 4096 #chroot /usr/share/haproxy user haproxy group haproxy daemon #debug #quiet defaults log global mode http option httplog option dontlognull retries 3 option redispatch maxconn 2000 contimeout 5000 clitimeout 50000 srvtimeout 50000 listen appname 0. I want to create a stick table that increments connections and denies the request if more than 3 in less than 20 seconds. com: 172. See also : "server" id Set a persistent ID to a proxy. cfg: http-request set-var(req. The problem I am facing is that the backend overwrites the Authorization header (it's required for the magic link to work) and I get stuck in a loop and need to log on every time. Read the comment on http-send-name-header: it has been reported that this directive is currently being used as a way to overwrite the Host header field in outgoing requests; while this trick has been known to work as a side effect of the feature for some time, it is not officially supported and might possibly not work anymore in a future version depending on the I want to rate limit users connecting to wp-login. com:443 ssl verify none check server app-1b app. You should replace the following line. xxx. cachesize 2048000 tune. I wanted to find a way to override haproxy’s behaviour and not send this specific header at all so that health checks return 200 OK. Core concepts Core concepts. com'. 101:443 ssl verify none check check-sni adfs. The req* directives are much older functionality than http-request so the latter is preferred, generally, but there's an important reason why you should prefer it, I have setup HAPROXY on top of Apache which is working fine but I am not able make api call from other domain, It was CORS issues so I added . co uses AWS in the background). Is there a solution to do this with haproxy? Best Henry. _backend proxy-backend backend proxy-backend balance roundrobin mode http option forwardfor http-response set-header X-Forwarded-Port %[dst_port] http-response set-header X Hi, I would like to implement HTTP HEADER RESPONSE in order to all requests processed by haproxy must return a header to identify which HAProxy instance we are going through. foo. The website is behind Cloudflare so, to get the source IP, I need to hdr(CF-Connecting-IP). 3:80 option http-keep-alive default_backend test_tcp80 backend test_tcp80 balance I would like to use HAProxy or a similar proxy solution to add OAuth authentication to these client requests. Below is a paired down example of my haproxy. Hi Deeps, All HTTP headers and cookies are carried forward to the backend server (i. Key changes in the HAProxy Data Plane API 3. You could also use http-request set-header X-Forwarded-Proto in the front-end, rather than using reqadd. Related topics Topic Replies Views Activity; HAProxy 2. The Call for Papers is open. For example: True-Client-IP: 203. option http-server-close option forwardfor On target server I see in header X-FORWARDED-FOR=xxx. Example: The next code works (on backend) global log 127. 216:8443/search/login/cas I’m doing TLS termination on a frontend, and using the host-header with a domain map to forward to a backend pool of servers. internal-address). com/\1 Running HAProxy version 1. If you feel like you're doing Hi Using Tenable. 32:8080 id 1 weight 1 maxconn 10000 check inter 60000 rise 2 fall 3 server 192. We currently add a unique-id and use it to see a request flow through our backend servers. HAProxy on homeserver forwards the docker containers with an SSL Hi , I am trying to replace header using regex. 4. 16 Adding header to response for specific URLs with HAproxy. Hello ! I have a pool of servers with a dedicated private dns record to each server: example1. If the value was ffffffff, roll to 0 and increment the high bytes. 7. Commented Sep 1, 2020 at 3:16. 4 after changing stuff in docker-compose, keycloak server configs and adding this to my backend options in haproxy: http-request add-header X-Forwarded-Proto https if { ssl_fc } RSS feeds for new episodes of your favorite shows and will interface with clients and indexers to grab, sort, and rename them. ) Currently we are using Haproxy as a software loadbalancer. The next edition of the HAProxyConf will be held on June 4-5 2025, with some workshops on June 3. Part of this is rewriting the Host: header to match what the application expects. Using a load balancer (HAProxy) betwe is it possible to change/rewrite/replace the domain name in the request before you pass it through to the backend server? I have 1 frontend: maxconn 2000. Each of the servers requires unique Basic Auth Headers. The example below accepts the Proxy Protocol header from incoming connections: HAProxy - Add response header to indicate the server that was chosen. http-response set To suffer "less" from a failed Elasticsearch instance, we have set up two instances in two different regions (Elastic. The purpose of adding header to http-request is to create listen rule in ALB. 220. It will lowercases the header name though, due to the internal http representation. *?(\barg1\b)[^$]*)$ \1banana\2 Here is what i am getting now. Use case: 1) Request (TCP/SSL) comes to haproxy 2) haproxy reads the SNI (Server Name Indication) data from the request (subdomain. Help! Haproxy removing Content-Length header if Transfer-Encoding header is found. 0 or newer, and HAProxy ALOHA 12. Skip to main content. 2 How Can I modify a request header value from A to B by using Haproxy. local) Implementation I need to write client IP in 2 places in header, in X-CLIENT-IP and X-FORWARDED-FOR tag's. If your haproxy log does I am using haproxy 2. Create a stick table. 162. Changelog EE MINOR Rename proxy flag k8s-api-sync-type values; It is strongly recommended that the header should be lower then the 8KB. Improve this question. 1 example2. I'm trying to add a custom header at the HAProxy layer (before forwarding it to the load balancer) based on a get parameter. Specifically, I want to route traffic from a specific device, the Newland NFT10 scanner, to a separate backend server based on its User-Agent header. I am upgrading our load balancers (haproxy 1. If you can fix this via configuration of the actual system behind HAProxy, that's almost certainly the correct fix. 5-2~bpo8+1 on Debian 8 What I’m trying to do is add HTTP headers with a http-request redirect to the response sent to the client. Hi, thank you for quick response. In this case, as we defined in the crt-store, that is the certificate site1. This can be useful for adding information such as the date and time, the Got it, you want to the destination server to be based on the Host header. backend node http-request add-header Authorization (value-of-request-header) lukastribus July 15, 2021, 8:43am 4. com:7170 check. About; Products Header: key=value acl custom_header key=value use backend value backend value server something. This header will be analysed by downstream SSO agent and forward to appropriate IP address specified in header after authentication. value. 216:8443/cas/login?service=https://135. e. I’ve learned that doing a simple find/replace reqirep with http-request replace-header won’t work given the Hello HAProxy Community, I’m using HAProxy for my Pfsense and traffic management needs, but I’m facing a challenge when it comes to identifying and redirecting traffic based on the User-Agent header. 2 Send real Host header for httpchk in HAProxy. The app is running behind haproxy, so this is necessary in order for it to work properly. cfg and add this line to the News Sep, 18th, 2024: HAProxyConf 2025 Call for Papers. balance roundrobin server srv1 x. Event-driven models do not have Answering here for future reference; on haproxy 2. Example: Input headers: cookie: cookie_a=content_a ; cookie_b=content_b Output headers: cookie: cookie_a=content_a cookie: cookie_b=content_b Am I right ? I saw that with tcpdump + wireshark, but I am no 100% sure that HAProxy received only one cookie header because I don’t know how to read https I'm looking to get HAProxy to both set a custom header and log it. Each of these servers uses Basic Authentication to control access to them and HaProxy shares the load across them via a round-robin method. How to pass JWT token from Headers Set-Cookie to Authorization I use the Haproxy as the SSL termination to identify client side certificate. Commented Oct 21, 2019 at 11:05. 12) and some of the original configurations are deprecated. I'm doing the following to redirect non-https traffic to https: redirect scheme https code 301 if !{ ssl_fc } Which works great, however if a user injects a Host header they are redirected to that header rather than the target on an https connection. com/devops2/login/userStart?pageUUID=54190a4f-1e89-43b4-ba53 I attempted to use http-send-name-header to set the Host header, but it doesn’t seem to be working in my scenario. 110:443 to 10. 7 the following works: backend highly-available-service mode http option forwardfor option redispatch http-response set-header X-Server %s server server_uk3 127. E. That’s the first point. The header must be called Authorization Bearer Anyone have idea how to called Header? Haproxy. It isn’t a forward-proxy, its a reverse-proxy and enabling Proxy-Authorization on a reverse proxy would I am trying to replace this part of the string in the response header "abc,def,ghi,jkl" . Then there is nothing for you to do. example1-ext. Follow answered Oct 7, 2019 at 8:40. Haproxy will not remove any headers by default. – Michael - sqlbot Commented Nov 21, 2018 at 21:18 TCP router using haproxy. The app’s documentation provides instructions and a configuration example using nginx; see here and http-request add-header X-VALUE the_param2. 22-f8e3218 2023/02/14) –>HAProxy-LBS—>HAProxy-RPX—>webserver After enabling the proxy-protocol between the loadbalancer and reverse-proxy we see “SSL handshake failure” errors every 2 seconds(lbs alive check) since reqirep is deprecated since haproxy 1. 11. To enable an HTTP to HTTPS . Also keep in mind that for now, Internet Explorer wants a separate header, X-Content-Security-Policywhich works in pretty much the same way as the "regular" CSP, so you'll likely want to define both these header fields. http-response replace-value X-Application-Context ^(. This custom header contain iP address of router . So this Authorization value header I want to send in backend as a header. In the example below, we add an X-Via header containing the hostname of the current load balancer server processing the traffic: About Header manipulation. Ask Question Asked 6 years, 7 months ago. 0 release include: Breaking changes Jump to heading #. then adding your code to my HAProxy config. com, and TLS serves Problem with custom header in incoming request. Thanks! With HAProxy 2. i. I found solutions suggesting to use %[unique-id] but it turns out that's only in version 1. # create a stick table that monitors for 20 seconds stick-table type ip size 1m I had the exact same issue in that I wanted to conditionally set the header if not present and %ID wasn't working as you'd expect. Help! jazzl0ver October 23, 2019, 11:09am 1. Also variables like srv_name and srv_id also does not The haproxy add response header command is used to add a custom header to the response of a haproxy server. 2r1 (1. About; Products I want to add Access-Control-Max-Age header to response. com:443 ssl verify none check server app-1c app. frontend front mode http bind *:8080 default_backend servers http-request add-header Authorization "Bearer {{ . proxy host) unless you explicitly delete or change them. 4 to combine both the Host header and the first line of the HTTP request into a custom header. it is almost as if the browser confuses where the response is coming from or makes a request using cookies It’s absolutely not clear what you want to do. SSO servers running from different servers. I understand that I need to use http-request replace-header instead of reqirep. The configuration that works uses port 9000 on the backend. 6, create a new backend block (could be a duplicate of the default backend) and add the special headers in there. (HAProxy version 2. Please note this value is NOT static. 1 The thing is that I do not want HAProxy to check the validity of the client certificates. 1 Like. com), extract "subdomain" from the host name 3) Now, this request has to be passed on to a backend server (subdomain. backend ADFSBackend balance roundrobin mode http option httpchk GET /adfs/ls/idpInitiatedSignon. maxaccept 10000 stats socket /var/lib/haproxy/stats Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Hello, HAProxy 1. ssl. 10 (pfSense) here. Users from the Plan to use http-request set-header Host host. prod\. Per the haproxy docs you can configure the header in the httpchk line. Connect with Us Products HAProxy Enterprise; HAProxy Enterprise capture request header Content-Length len 64 capture request header Content-Type len 64 # BEGIN CORS capture request header origin len 128 http-response add-header Access-Control-Allow-Origin %[capture. token)] version 2. ) * HAPROXY_CFGFILES: list of the configuration files loaded by HAProxy, separated by semicolons. 1. use_backend alt_backend if { some_condition } admittedly not an ideal solution but it does the job. 5. Thanks in advance! HAProxy community Strip port in host header. prod. See Configure the Dashboard Gateway for more details. name if { condition } but can’t f In a backend have a list of servers. – Yeah_nahh. Non blocking design-----HAProxy is an event driven software, so blocking system calls are absolutely; forbidden. Try putting default_backend at bottom of section and all acls before use_backends. Behind HAProxy I have a Spring Boot application which has a dynamic truststore (which can be changed at runtime) and this app needs to perform certificate validation, not HAProxy. xxx(client ip) but there is no x-client-ip header. If you are using an affected product you +1 (844) 222-4340. How can I do it? HAProxy community Remove server info from haProxy headers. Andrey Regentov Andrey Regentov. peer loadbalancer1 To accept a Proxy Protocol header on incoming TCP connections: Add an accept-proxy argument to the bind line in a frontend section. Still leaves me with a per-server config but that single file is easy to modify as a once off as part of the server deployment script. com One of the IIS It seems that HAProxy is not recognizing the host headers and as a result is unable to forward requests to the appropriate backend. Stack Overflow. This article shows several ways of handling multi-domain configurations, including an introduction to using HAProxy maps. The second parameter is a list of domains to whitelist. The syntax for adding response headers in haproxy is as follows: header_name value. 0 or newer, HAProxy Enterprise 2. nix. 9 with htx enabled. Add a forwarded header Jump to heading # To configure the load balancer to add a forwarded header to an incoming request, set the option forwarded directive in a defaults or backend section: With my NGinx setup I was able to intercept OPTIONS requests from ajax preflight and respond with the correct CORS headers and a 200 response so the request could continue onwards. Try it: frontend header_front bind *:80 mode http option forwardfor if-none acl demo_host_version hdr(X-DEMO-HOST-VERSION) -i test use_backend test_backend if demo_host_version default_backend prod_backend backend test_backend backend prod_backend I already try this but is not working backend default_ad_agent mode http http-request add-header Authorization "xxxx" if { srv_id 1 } http-request add-header Authorization "yyyy" if { srv_id 2 } server 192. hdr(0)] if { capture. Hi. 32 192. The idea: Both Elasticsearch instances contain (more or less) the same data and we can balance or fail over from one to another instance. lukastribus August 13, 2019, 5:09pm 2. I have a homeserver, with HAProxy installed and some docker containers. 44. Stick tables. 0 it’s working. 31 192. 112. 2 http request to https request using haproxy. This should be avoided. haproxy; Share. 4r1, and ALOHA 13. 10. if hdr_location and not: if { hdr_location } Also please read the documentation about http-request replace-header, it’s not a 1:1 replacement for rspirep, the syntax is different: The http-request line’s first parameter lists the HTTP methods that are permitted. Our backend servers will soon communicate also via the haproxy. 1116) - BUG/MINOR: server: Don't warn fallback IP is used during init-addr resolution - BUG/MINOR: polling: fix time reporting when using busy polling - REGTESTS: fix random failures with wrong_ip_port_logging. x:<port_number> check Thanks in advance! regards. 3 "HTTP log format". 1:8080 check server server_uk1 86. 1 local0 debug chroot /var/lib/haproxy pidfile /var/run/haproxy. The second point would be to all requests to applications hosted on a K8s cluster must return a header that identifies which cluster the application responding to http-request set-header X-MS-Proxy HAProxy redirect scheme https if !{ ssl_fc } default_backend ADFSBackend. try using 'hdr(host) -i bk1. Core concepts. I already read a doc ( Repositories - haproxy-2. We looked at h1-case-adjust option, but this requires a predefined k:v pair to work, we do not know them. HAProxy add some headers before 302 redirect. Also try not repeating server names, you have HAProxy implements an event-driven, mono-process model which enables support for very high number of simultaneous connections at very high speeds. Do you just want to pass TCP traffic from 10. System. How can I get the value in id node to use it to create my hash for the load balancing ? Something like How to preserve the original ‘Host’ HTTP header in haproxy? Regards, Deeps. True-Client-IP is only available on an Enterprise plan. I'm trying to pass client cert and CA thru http headers, per Keycloak docs, but keycloak is not recognizing the headers, it seems. pid maxconn 500000 maxsslconn 300000 maxconnrate 99999999 maxsessrate 99999999 maxsslrate 99999999 nbproc 16 cpu-map 1 0-15 stats bind-process 16 user haproxy group haproxy daemon tune. I've tried manually adding CERT_CHAIN_* values by hard-coding the cert into haproxy config but still no luck. The header string to use to send the server name The "http-send-name-header" statement causes the name of the target server to be added to the headers of an HTTP request. company. The header Response edited because I misunderstood the question. com and forwarded them to the corresponding private dns record. Im sending request to haproxy with “Authorization” header. That’s what happens by default. We have a load of applications that requires headers to be received as sent by the server, but by default haproxy lowercases all the header names. vtc under load - BUG/MINOR: trace: automatically start in waiting mode with "start <evt>" - BUG/MINOR Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog can you please suggest haproxy heade value replace config to match for a string & replace the value . Would it be possible to add this header only if not yet present? Best regards, richard I am new to haproxy (actually proxy'ing in general) and I can't figure out how to add a path to my backend. In the example below, 203. *)" "\1; SameSite=None" if is-foo Depending on my information from the docs the acl should match for all requests like Hi I have a header coming from downstream that looks something like this: “subjectdn: serialNumber=randomnumbers, ST=someStateOrProvinceName, L=someLocality, C=someCountryName, O=someOrganizationName, OU=someOrganizationalUnit, CN=someCommonName” - so basically some fields from the client TLS certificate. ; from the crt-store named web, we want the certificate components having the alias site1. 0 How to make HAProxy's SSL redirect and path rewrite (with reqrep) work at the same time? 7 HAProxy http-request redirect a specific path to another path. The name is added with the header string proved. com/(. pem and OCSP response file site1. This means that: we are using the crt-store named web. 8 with rspirep, the if statements needs to be:. All should use only one unique-id. You can also add multiple response headers by separating them with a comma: So deletes only by name http-request del-header Host That’s not working http-request del-header ^* HAProxy community Delete all headers. 5 or newer are affected by CVE-2023-25725. I’m trying to change that to 9443, but when I do I am getting the following in the Chrome console: "Failed to load the resource: the server responded with a status of 503 You need a check header (hdr in haproxy) value via ACL. cfg file I’m looking to convert header names to lowercase in haproxy config. Here is the currect config of haproxy. I want to check the CN value in the client certificate if it matches a header value sent by the client. Is there any Ingress Controller that supports this functionality? Example: The changelog shows you an in-depth list of changes included in this version of HAProxy Enterprise Kubernetes Ingress Controller. I have my backend defined as: server server1 ns. What is the correct way to strip port number in host header? I have an acl: acl srv_all hdr_end(host) -i mydomain. Related questions. ocsp. 6. 12:443 check-ssl ssl backup weight 20 if using haproxy below v1. After you’ve configured the redirect to HTTPS in your frontend section, you’re ready to set up HSTS. This happens in 2. mydomain. HAProxy just needs to forward the certificate in a header to the app – user2414223 you saved my life! I was searching for a little bit different configuration. 1 There is no difference between the True-Client-IP and CF-Connecting-IP headers besides the name of the header. com:443 ssl The problem is that the access tokens have a TTL of Apache would preserve header capitalization from upstream servers while haproxy transforms every header into lowercase. The problem is: When I use. If you want to replace . Load 7 more related HAPROXY_HOSTNAME=my-hostname. I am attempting Skip to main content. ACCESS_TOKEN}}" backend servers mode http server server1 myserver. x. 4, HAProxy Enterprise 2. 113. But there is a simpler test: Running curl against directly against the backend server, but lowercasing the header name (not the value), curl -v https://10. The web server uses the value of this Reading time: 2 min read This is the header info HaProxy is supposed to search for before accepting the HTTP request: set req. I modify my haproxy. X-Application-Context →MyService:arg1,arg2,arg3,arg4:number here is what i have tried . 7+. 3. For example, to add a `X-Frame-Options` header with the value `DENY`, you would use the following configuration: header_set X-Frame-Options DENY. However, I need similar function for extracting parameters from the URL sent as HTTP Header field Referer. Use the stick-table directive; Use the table directive we track an entry in the table by the client’s source IP address, the name of the backend, and the Host header: haproxy. I’ve got a TLS/SSL enabled frontend that’s configured to unconditionally send the Strict-Transport-Security HTTP response header, e. us-east-1a. 1 local0 log 127. query-string; haproxy; Share. Data Plane API moves to v3, and our API resources now start with /v3 instead of /v2. Help! Hi, I have defined a lua header in haproxy config to add a header (X-Request-Id) to all incoming requests, but now I need to exclude one of the backends! Here is my related config file: global lua-load /va Hi, I have defined a lua header in haproxy config to add a header (X-Request-Id) to all incoming requests, but now I need to exclude one of the backends! Here is Is something like this possible with haproxy if so can someone help with the right syntax or documentation? Header: key=value acl . 0, but would like to switch to HTTP 1. HAProxyConf 2025 - Registrations are Open! Blog A header that contains the type of HAProxy; discards the request after the reception timeout. Dynamic server name and header in HAProxy. Stick tables Stick tables. 2 I want HAProxy to be able to receive requests with public host: example1-ext. domain\. Here is sample header. It doesn't matter. http. *, then Hi all, I have an application is sending a HTTP request to a machine behind a HAProxy vip but the response HAProxy is sending back appears to be missing some headers. 1 HAProxy add header based on URL parameter. Env. Would it be possible to implement the possibility to truncate the string from the start (left) rather than the end (right)? Or is it possible I'm trying to implement a header based routing on Openshift 3. 168. us-east-1b. 142. com or example2-ext. I’ve been trying to The way I attempted to do it with haproxy is setting a variable, and logging based on it. name if { condition } but can’t find a suitable (working) condition. real_ip to CF ip http-request set-var(txn. 4-1ppa1~bionic 2020/10/02: defaults log global mode http option httplog option dontlognull timeout connect 5000 timeout client 50000 timeout server 50000 timeout http-keep-alive 2m frontend test_tcp80 bind 10. myapp. Is there a way to set ACL if the CN value in the certificate does not match the value in the header? Something like: Hello, as per HAProxy 2. example. pem mode http option tcplog default_backend desenv_1 timeout client 5m #ACL to new attempt acl header_c dst_port 80 #Attempt with no ACL http-response set-header X-Frame-Options SAMEORIGIN #Attempt I need help I am using the following configuration to route traffic to different backends; however, the backend host is the same host for both applications. cfg: frontend frontend_http bind 0. 222. * HAPROXY_HTTP_LOG_FMT: contains the value of the default HTTP log format as defined in section 8. Use http-response add-header to add a header to the response before relaying it back to the client. (I doubt we will handle >48 bits of queries in the life of this software. 1 local0 debug defaults log global stats enable option httplog frontend httpFrontendi mode http bind *:80 http-request add-header February 2023 – CVE-2023-25725: Header Parser Fixed. When set to on, process-vary will process a Vary header if it contains only one or more of the following HTTP headers: accept I have a web server (actually it's a CF environment, but that doesn't matter much) running behind a haproxy version 1. The turnaround is to create a dummy backend like this: thank you for your response rhada, my problem is with the presence of the content-length: 0 on the health check request from haproxy towards some quirky backends that consider this request as “bad” . Updated thanks to borellini. 0 HAProxy - Can I set a header on a monitor response? 3 haproxy return empty response. HAProxy Enterprise Copy the config. Change the URL in the header bar to the address of your The forwarded header is the IETF RFC7239 header and supersedes the non-standard X-Forwarded-For header and its variants such as X-Forward-For. The one giving me the most trouble is reqirep. Could you please guide me how can I do this by using HAPROXY. Follow asked May 7, 2014 at 16:01. Examples to match: X-Abc-Signature X-Whatever-Signature X-Service-Signature I know I could explicitly create rules like: global log 127. As the ALERT message say you can't use request header in the response. HAProxyConf 2025 - Call for Papers is Open! HAProxy Enterprise Theme. 0 by default, due to htx mode, as well as in 1. 8. 1 is the original visitor IP address. Hot Network Questions Do you know In the blog post, you'll learn more about using HAProxy as an API gateway, leveraging it to secure your API endpoints using OAuth 2. HAProxyConf 2025 - Call for Papers is Open! HAProxy Kubernetes Ingress Controller MINOR rename with _test test files; TEST test HTTP Requests Backend CRD; TEST test ACLs Backend CRD; MINOR add acls and http requests in Hello there ! It seems that HAProxy splits Cookie headers. We have to add a custom header for every backend server definition. Here Hi, I have inherited an existing reverse proxy configuration I’m trying to change that seems simple enough, but something isn’t working. Please let me know. 223 1 1 gold badge 2 2 silver badges 8 8 bronze badges. then in frontend use that backend conditionally. 0-263. Need to add an AWS CloudFront server, which needs a matching Host header (different than the default. 0 HAProxy proxy forwarding to external HTTPS, with a URL rewrite. In this frontend: We set the crt as @web/site1. Wrong line. http-request set-header X-HAProxy-Hostname %[env(HAPROXY_HOSTNAME)] This works fine. 10 HAProxy - Add response header to indicate the server that was chosen. We tested and haproxy adds a new unique-id. http-response set-header Strict-Transport-Security "max-age=31536000; includeSubDomains" This works, but only for successful responses (from the HAProxy point of view). ; Redirect HTTP to HTTPS Jump to heading #. peers mycluster. . Hi all, I am running haproxy inside pfsense. I would be very happy if someone has an idea why it is not working; The following configuration I have added to HAProxy configuration. to the file /etc/default/haproxy. Add a comment | Your Answer Reminder: Answers generated by artificial intelligence Enable the HAProxy Enterprise Real-time Dashboard. json. 31:8080 id 2 weight Sets the seconds for an object to stay the cache; it can be overridden with a Cache-Control header. Darin Dimitrov Darin Dimitrov. com It obviously fails when the host header contains a port number. Viewed 3k times /cert. To insert the Strict-Transport-Security header into every response, use the http-response set-header directive, as shown here: I understand that I can use url_param / urlp to extract the query parameters from the URL that is requested, in HAProxy. Dark. 5). I believe you are looking for http-response replace-header . The servers on the backend have names like worker1. log-tag haproxy pidfile /var/run/haproxy. 4/api/stass -H "x-api-key: hashedkey" Hi i have a unique requirement. ssl_c_s_dn: returns the full Distinguished Name of the certificate presented by the client. When you have multiple backends, it usually makes sense to do this on the frontend. cyrano330 February 5, Hi guys, I’m using haproxy 2. real_ip) hdr_ip(CF-Connecting-IP) Due to some legacy application that relies on Host header to function correctly, I need to have an Ingress (proxy, etc) that capable of rewrite Host header and pass that to downstream (backend). Is there any other way to achieve it? Here is my whole haproxy. Have you tried combining reqadd with an acl that references the be_id The webpage is running fine at https, all hhtp requests are redirected by haproxy to https What would be the correct setting for http-response set-header X-Frame-Options or other http response settings in order to allow the http iframe in the https webpage? HAProxy community HTTP Header for Iframe from http. To better understand how HTTP headers are handled in HAProxy, check out our HTTP headers HAProxy config tutorials HAProxy config tutorials. ssl_c_verify: the status code of the TLS/SSL client connection. 20 to haproxy 2. com The term value should be a var or place holder so I can match For this reason, I like to add it as a query parameter. Thanks for HAProxy add header based on URL parameter. 60. ijzfyq osjpnl ndrty bcguql ypxkxh qtghiap jzmbfd kuzs gfovl lflf