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Dudi1's avatar
Dudi1
Icon for Nimbostratus rankNimbostratus
Jul 07, 2019

Problem With Publish inside App so i will be reach it from Outside

Hi all

We have in our organization F5 LTM

i have inside app that have the server ip address 10.7.4.94

But the app speak with the server in the FQDN name of "app-server.ashdod.eu"

now the app-server.ashdod.eu is inside address

but the address that i try to reach to from the world is "FrontEnd.ashdod.muni.com"

now my problem is that when i reach to "FrontEnd.ashdod.muni.com"

i get from the app 

"Error loading https://app-server.ashdod.eu/portal/sharing/rest/portals/self?f=json&callback=dojo_request_script_callbacks.dojo_request_script0"

So from what i see the app return instead of FrontEnd.ashdod.muni.com its return app-server.ashdod.eu that is inside address

any suggestion ?

application delivery
LTM

1 Reply

  • Andrew-F5's avatar
    Andrew-F5
    Icon for Employee rankEmployee
    Jul 08, 2019

    Dudi,

    Your server is likely sending app-server.ashdod.eu in a location header on response so the browser then requests 'app-server.ashdod.eu/path/'.

    You will need to rewrite the host on both client and server side requests/responses.

    Client request: FrontEnd.ashdod.muni.com > (F5) change FrontEnd.ashdod.muni.com to app-server.ashdod.eu > Send to server

    Server response: app-server.ashdod.eu > (F5) change app-server.ashdod.eu to FrontEnd.ashdod.muni.com > send to response to client.

    Refer to https://devcentral.f5.com/s/feed/0D51T00006i7Vu6SAE, @frisco76 104868 for credit.

    when RULE_INIT {        
 set ::external_hostname "FrontEnd.ashdod.muni.com"         
 set ::internal_hostname "app-server.ashdod.eu"    
  Enable debug logging to /var/log/ltm.  1 = yes, 0 = no 
 set ::hostname_rewrite_debug 0 
 }    
  
  
 when HTTP_REQUEST {                
 if {$::hostname_rewrite_debug}{log local0. "Original URL: [HTTP::host][HTTP::uri]"} 
  
 HTTP::header replace "Host" $::internal_hostname        
  
 if {$::hostname_rewrite_debug}{log local0. "New URL: [HTTP::host][HTTP::uri]"} 
 }    
  
  
 when HTTP_RESPONSE {         
 if { [HTTP::header value "Location"] starts_with "$::internal_hostname" }{ 
  
 if {$::hostname_rewrite_debug}{log local0. "Inside of HTTP::header location, orig HTTP location equals: [HTTP::header location]"} 
  
 set ::location [HTTP::header location] 
  
 HTTP::header replace location $::external_hostname 
  
 if {$::hostname_rewrite_debug}{log local0. "Inside of HTTP::header location, new HTTP location equals: [HTTP::header location]"} 
 } 
 }