Forum Discussion

Cirrus

Jan 20, 2021

HTTPS REDIRECTION : Specific NODE using iRULE

Hi Experts ,

i am working on one requirement where i need to redirect https://www.example.com needs to redirect to specific NODES ( 8 nos ) based on URI PATH .

i have created a layer 7 virtual server with SSL profile and attach it with following irule :

when HTTP_REQUEST { 
 
        if {[HTTP::host] contains "TEST-ESB-VIP-BMA.example.com" and [HTTP::path] eq "/m2p/"} 
        {
        node 10.30.214.1 2783
        return 
    }
	
	if {[HTTP::host] contains "TEST-ESB-VIP-BMA.example.com" and [HTTP::path] eq "/aps/"}
        {
        node 10.30.230.31 7001
        return 
    }
	
	if {[HTTP::host] contains "TEST-ESB-VIP-BMA.example.com" and [HTTP::path] eq "/bmx/"} 
        {
        node 10.30.214.38 61648
        return 
    }
	
	if {[HTTP::host] contains "TEST-ESB-VIP-BMA.example.com" and [HTTP::path] eq "/cts/"}
        {
        node 10.30.214.236 4515
        return 
    }
	
	if {[HTTP::host] contains "TEST-ESB-VIP-BMA.example.com" and [HTTP::path] eq "/mii/"} 
        {
        node 10.30.215.174 50000
        return 
    }
	
	if {[HTTP::host] contains "TEST-ESB-VIP-BMA.example.com" and [HTTP::path] eq "/ampla-bma/"}
	{
        node 10.30.222.43 8889
        return 
    }
	
	if {[HTTP::host] contains "TEST-ESB-VIP-BMA.example.com" and [HTTP::path] eq "/ampla-bmc/"} 
	{
        node 10.38.2.48 8889
        return 
    }
	if {[HTTP::host] contains "TEST-ESB-VIP-BMA.example.com" and [HTTP::path] eq "/iqt-bma/"} 
	{
        node 10.30.215.208 8889
        return 
    }
	if {[HTTP::host] contains "TEST-ESB-VIP-BMA.example.com" and [HTTP::path] eq "/iqt-bmc/"}
	{
        node 10.30.222.230 8889
        return 
    }
	
	
}

when i try to access the VIP IP using its DNS name https://TEST-ESB-VIP-BMA.example.com/m2p as an example , BIG-IP is sending me RST back stating no Server selected . I can see hit on irule in the statistic TAB . 

Here is the packet capture from the BIG-IP : 

10.30.230.58.https > 10.139.153.195.53666: Flags [.], cksum 0x94c1 (incorrect -> 0x7121), ack 1352, win 5449, length 0 out slot1/tmm0 lis=/Common/VS_MULE_BMA_TEST_HTTPS_443 flowtype=64 flowid=560000E1C600 peerid=0 conflags=4000024 inslot=63 inport=23 haunit=1 priority=3 peerremote=00000000:00000000:00000000:00000000 peerlocal=00000000:00000000:00000000:00000000 remoteport=0 localport=0 proto=0 vlan=0
02:14:04.293589 00:50:56:ba:17:86 > 54:7f:ee:09:d8:c1, ethertype 802.1Q (0x8100), length 176: vlan 2200, p 0, ethertype IPv4, (tos 0x0, ttl 255, id 44631, offset 0, flags [DF], proto TCP (6), length 40)
    10.30.230.58.https > 10.139.153.195.53666: Flags [.], cksum 0x94c1 (incorrect -> 0x7121), ack 1352, win 5449, length 0 out slot1/tmm0 lis=/Common/VS_MULE_BMA_TEST_HTTPS_443 flowtype=64 flowid=560000E1C600 peerid=0 conflags=4000024 inslot=63 inport=23 haunit=1 priority=3 peerremote=00000000:00000000:00000000:00000000 peerlocal=00000000:00000000:00000000:00000000 remoteport=0 localport=0 proto=0 vlan=0
02:14:04.293640 00:50:56:ba:17:86 > 54:7f:ee:09:d8:c1, ethertype 802.1Q (0x8100), length 246: vlan 2200, p 0, ethertype IPv4, (tos 0x0, ttl 255, id 44633, offset 0, flags [DF], proto TCP (6), length 83)
    10.30.230.58.https > 10.139.153.195.53666: Flags [R.], cksum 0x94ec (incorrect -> 0xc3d1), seq 148:191, ack 1352, win 0, length 43 [RST+ BIG-IP: [0x29b630c:4504] No se] out slot1/tmm0 lis=/Common/VS_MULE_BMA_TEST_HTTPS_443 flowtype=64 flowid=560000E1C600 peerid=0 conflags=4800024 inslot=63 inport=23 haunit=1 priority=3 rst_cause="[0x29b630c:4504] No server selected" peerremote=00000000:00000000:00000000:00000000 peerlocal=00000000:00000000:00000000:00000000 remoteport=0 localport=0 proto=0 vlan=0

I am NOT sure what i am doing wrong here .If anyone can guide me what i am doing wrong will be much appreciated .

Thanks in advance .

21 Replies

Deepak_Nair
Cirrus
Jan 21, 2021
Thanks Kees and All for helping me OUT on this . Much appreciated .
Deepak_Nair
Cirrus
Jan 22, 2021
Ok , i ran into problem . The iRULE work fine but the requirement is to replace the host header from test-esb-vip-bma.example.com/m2p to a new url "www.newurl.com/m2p when the LB initiate the request to the server end .

what is mean to say is for example as per the irule /m2p is pointing to node 10.30.214.1 2783 . So when the LB initiate the HTTP Get request , it rebuilt the URL with new HOST 10.30.214.1 with URI /m2p . Is this achievable ?

the scenario is as below

from CLIENT_TO_LB ---> https://test-esb-vip-bma.bhp.com/m2p

from LB_To_SERVER. ----> http://10.30.214.1:2783/m2p

I am trying to TWEAK my irule . Any help in this regard how to replace the HOST header when the LB initiate the request and change with NODE IP AND PORT and append the URI ?
Deepak_Nair
Cirrus
Jan 22, 2021
This URL test-esb-vip-bma.example.com should only be visible to CLIENT and URL header replacement shouldn't be visible to CLIENT .
Deepak_Nair
Cirrus
Jan 22, 2021
i Wrote a sample to see if this work .

when HTTP_REQUEST {
if {([string tolower [HTTP::host]] equals "test-esb-vip-bma.bhp.com") &&
[HTTP::uri] starts_with "/cts" }
{
HTTP::header replace "Host" "10.30.230.15:4515"
HTTP::uri
}
}

The Irule is hitting BUT connection is getting RESET .
- KeesvandenBos
  MVP
  Jan 22, 2021
  But now the BIG-IP doesn't know where to send the request...
  when HTTP_REQUEST { if {([string tolower [HTTP::host]] equals "test-esb-vip-bma.bhp.com") && [HTTP::uri] starts_with "/cts" } { HTTP::header replace "Host" "10.30.230.15:4515" node 10.30.230.15 4515 } }
  Sorry for the formatting..... Can you try the above irule?
  Cheers,
  Kees
Deepak_Nair
Cirrus
Jan 22, 2021
Hi Kees ,

This works !!! thanks alot .

Sorry for my trouble Question again !

The actual URI PATH is HP01/CtsConsignment?wsdl . SO with the ABOVE iRULE the actual URL && URI PATH it take is 10.30.230.15:4515/cts/HP01/CtsConsignment?wsdl .

BUT there is no resource exist in cts/HP01/CtsConsignment?wsdl . The Resource actually exist in URI HP01/CtsConsignment?wsdl .

So i want to STRIP OUT /cts from the URI path once the Host Header is replaced with 10.30.230.15:4515 .

In summary when client request to LB with https://est-esb-vip-bma.bhp.com/cts and request accepted
then LB rebuild the URL with http://10.30.230.15:4515//HP01/CtsConsignment?wsdl

Can this be achieved using irule or i should ask application team to create a URi PATH with cts/HP01/CtsConsignment?wsdl on the server .

Thanks .
KeesvandenBos
MVP
Jan 22, 2021
Hi Deepak,

I think you need an irule development course 😉

Is the only uri behind /cts/ /hp01/ctsconsigment?wsdl or are the more?

Cheers,

Kees
Deepak_Nair
Cirrus
Jan 22, 2021
Hi Kees ,

I am currently Working towards to get friendly with IRULES . Really sorry for hitting with many question . My bad 😐

There are like 200 URLS served from different HOSTS ( around 8 or 9 in nos ) . we want to ROUTE the application based on URI PATH which we discussed with ABOVE iRULE .

So for example , when client comes with https://est-esb-vip-bma.bhp.com/cts it should go to http://10.30.230.15:4515/HP01/CtsConsignment?wsdl or some other URI based on data they NEED . Here with VIP IP and URI PATH , IRULE we defined selects the desired HOSTS .

if client comes with https://est-esb-vip-bma.bhp.com/m2p it should route to http://10.30.215.16/Integration1.0/MaterialsServices.svc etc etc

So in general , i want to STRIP OUT the first URI in request and APPEND REST to the selected NODE within the iRULE .

I am doing some reading BUT not sure if this is achievable via IRULE . So reaching out for help from experts .

If NOT achievable then i will ask the APPS team to locate the content BUILD during HHTP get request from F5 based on iRULE .

Thanks /

KeesvandenBos

MVP

Jan 22, 2021

Hi Deepak,

It is ok, that is what devcentral is also for. To help.

Ok, so you need code to strip off a part of the uri.

Use this:

when HTTP_REQUEST { 
          if {([string tolower [HTTP::host]] equals "test-esb-vip-bma.bhp.com") &&  [HTTP::uri] starts_with "/cts" }  {
                   HTTP::header replace "Host" "10.30.230.15:4515"
                  HTTP::uri [string map [list "/cts" "" ] [HTTP::uri]]
                  node 10.30.230.15 4515
           }
}

Deepak_Nair
Cirrus
Jan 22, 2021
Thanks Kees . This Works .

Thanks Alot for helping me OUT . Much Appreciated .

I really need some irule development course .
- KeesvandenBos
  MVP
  Jan 22, 2021
  Your welcome Deepak!

Forum Discussion

HTTPS REDIRECTION : Specific NODE using iRULE

21 Replies

Recent Discussions

Disk space full - what files, folders are safe to delete?

ASM instance creation

BIG-IP DNS: Check Status Of Multiple Monitors Against Pool Member

Open Redirection Mitigation

F5Access | MacOS Sonoma

Related Content

https to https redirection

iRule HTTPS to HTTPS redirection

iRule Help - if specific URL, redirect, else display a maintenance page

Simple HTTP::redirect iRule results in a reset

Redirect from Http to Https Not working