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N__197982's avatar
N__197982
Icon for Nimbostratus rankNimbostratus
Jun 23, 2015

Understanding one of the iRules I found on the devcentral links.

Folks,   We came across an request from the applications team where they wanted a VIP listening on port 8080(http) to forward requests on port 443(https).   I checked the plain HTTP to HTTPS re...
application delivery
devops
iRules
Stanislas_Piro2's avatar
Stanislas_Piro2
Icon for Cumulonimbus rankCumulonimbus
Jun 23, 2015

To understand the irule, you must know how HTTP is parsed:

for the URL : http://test.nik.com:8080/test.txt the request is

GET /test.txt HTTP/1.1
Host : test.nik.com:8080
other headers

in this request:

  • HTTP::uri is /test.txt
  • HTTP::host is test.nik.com:8080
  • [getfield [HTTP::host] ":" 1] is the first part of HTTP::host with field separator ":" --> test.nik.com

this irule redirect to : https://test.nik.com/test.txt