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Requirement:
A virtual server serves multiple websites with content routing enabled. The script must extract the HTTP Host or URL from the client request and route traffic to the proper server pool.
- Create Scripting: Server Load Balance -> Scripting -> Create New.
- Define name.
- Input a Lua script statement.
- Select Save.
when HTTP_REQUEST {
local host = (HTTP:header_get_value("Host") or ""):lower()
local uri = (HTTP:uri_get() or HTTP:path_get() or "/"):lower()
if host == "web1.dvwa.ftntlab" then
LB:routing("dvwa1")
elseif host == "web2.dvwa.ftntlab"
and (uri:find("/index.php", 1, true) or uri:find("/login.php", 1, true)) then
LB:routing("dvwa2")
elseif host == "web3.dvwa.ftntlab" then
LB:routing("dvwa3")
end
}
Assign a virtual server with the created script.
Server Load Balance -> Virtual Server -> Edit respective virtual server -> Enable Scripting -> Select created script.
Demonstration:
- Simulate a request to FortiADC virtual server, e.g, https://web3.dvwa.ftntlab/login.php
- Expect script to gather HTTP requests information; HTTP Host and URL, then forward traffic to the correct content routing and server pool.
FortiADC virtual server traffic log:
Debugging commands for troubleshooting:
diagnose debug module httproxy scripting set
diagnose debug module httproxy scripting_minor set
diagnose debug enable
Disable debugging output:
diagnose debug disable
diagnose debug module httproxy all unset
Related documentation about Scripting:
HTTP Scripting
HTTP Scripting examples
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