Forum Discussion
Antony2015
Altostratus
AltostratusNeed help on rewrite iRule
Dear Friends,
I need a help on a rewrite iRule. The condition as follows...
x.y.com/EBC rewrite to x.y.com/ebc
x.y.com rewrite to x.y.com/ebc
I would appreciate if anyone can shed some light on this iRule requirement.
Thanks in advance.
2 Replies
- nitass
Employee
e.g.
configuration [root@ve11c:Active:In Sync] config tmsh list ltm virtual bar ltm virtual bar { destination 172.28.24.10:80 ip-protocol tcp mask 255.255.255.255 pool foo profiles { http { } tcp { } } rules { qux } source 0.0.0.0/0 source-address-translation { type automap } vs-index 8 } [root@ve11c:Active:In Sync] config tmsh list ltm pool foo ltm pool foo { members { 200.200.200.101:80 { address 200.200.200.101 } } } [root@ve11c:Active:In Sync] config tmsh list ltm rule qux ltm rule qux { when HTTP_REQUEST { switch [HTTP::uri] { "/" - "/EBC" { HTTP::uri "/ebc" } } } } test1 [root@ve11c:Active:In Sync] config ssldump -Aed -nni 0.0 port 80 New TCP connection 1: 172.28.24.1(39714) <-> 172.28.24.10(80) 1457237630.7187 (0.0016) C>S --------------------------------------------------------------- GET /EBC HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com --------------------------------------------------------------- New TCP connection 2: 200.200.200.14(39714) <-> 200.200.200.101(80) 1457237630.7230 (0.0041) C>S --------------------------------------------------------------- GET /ebc HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com --------------------------------------------------------------- test2 [root@ve11c:Active:In Sync] config ssldump -Aed -nni 0.0 port 80 New TCP connection 1: 172.28.24.1(39715) <-> 172.28.24.10(80) 1457237660.4237 (0.0026) C>S --------------------------------------------------------------- GET / HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com --------------------------------------------------------------- New TCP connection 2: 200.200.200.14(39715) <-> 200.200.200.101(80) 1457237660.4253 (0.0014) C>S --------------------------------------------------------------- GET /ebc HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com --------------------------------------------------------------- - nitass
The external clients will hit the LTM with a own http host "x.y.com/EBC" and "x.y.com" we do need to "rewrite" this requests that the webserver understands it: "x.y.com/ebc".
firstly, here is short video explaining about HTTP::host and HTTP::uri.
5-Minute iRules: What's a URL? by Colin Walker
https://devcentral.f5.com/videos/5-minute-irules-whats-a-urlDo we need to use "string tolower" command in the beginning
there are several ways to change letter case. string tolower is a good choice when you want to change whole string no matter what the string is.
if you want to change specific string, string map might be a better choice.
e.g.
configuration [root@ve11c:Active:In Sync] config tmsh list ltm virtual bar ltm virtual bar { destination 172.28.24.10:80 ip-protocol tcp mask 255.255.255.255 pool foo profiles { http { } tcp { } } rules { qux } source 0.0.0.0/0 source-address-translation { type automap } vs-index 8 } [root@ve11c:Active:In Sync] config tmsh list ltm pool foo ltm pool foo { members { 200.200.200.101:80 { address 200.200.200.101 } } } [root@ve11c:Active:In Sync] config tmsh list ltm rule qux ltm rule qux { when HTTP_REQUEST { HTTP::uri [string map -nocase {/ebc /ebc} [HTTP::uri]] } } test1 [root@ve11c:Active:In Sync] config ssldump -Aed -nni 0.0 port 80 New TCP connection 1: 172.28.24.1(39724) <-> 172.28.24.10(80) 1457248223.0429 (0.0026) C>S --------------------------------------------------------------- GET /Ebc HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com --------------------------------------------------------------- New TCP connection 2: 200.200.200.14(39724) <-> 200.200.200.101(80) 1457248223.0470 (0.0018) C>S --------------------------------------------------------------- GET /ebc HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com --------------------------------------------------------------- test2 [root@ve11c:Active:In Sync] config ssldump -Aed -nni 0.0 port 80 New TCP connection 1: 172.28.24.1(39725) <-> 172.28.24.10(80) 1457248251.3621 (0.0016) C>S --------------------------------------------------------------- GET /EBC HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com --------------------------------------------------------------- New TCP connection 2: 200.200.200.14(39725) <-> 200.200.200.101(80) 1457248251.3639 (0.0015) C>S --------------------------------------------------------------- GET /ebc HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com --------------------------------------------------------------- test3 [root@ve11c:Active:In Sync] config ssldump -Aed -nni 0.0 port 80 New TCP connection 1: 172.28.24.1(39726) <-> 172.28.24.10(80) 1457248276.1222 (0.0014) C>S --------------------------------------------------------------- GET /EBC/BHAbhaBHA HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com --------------------------------------------------------------- New TCP connection 2: 200.200.200.14(39726) <-> 200.200.200.101(80) 1457248276.1239 (0.0015) C>S --------------------------------------------------------------- GET /ebc/BHAbhaBHA HTTP/1.1 User-Agent: curl/7.15.5 (i686-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5 Accept: */* Host: x.y.com ---------------------------------------------------------------
