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How to change the default max length of Query string in URL

Sam_D_
Nimbostratus
Nimbostratus

My company is currently using BigIP v13.1.3.4 without ASM in place.

 

RFC 2616 (Hypertext Transfer Protocol — HTTP/1.1) states there is no limit to the length of a query string (section 3.2.1). RFC 3986 (Uniform Resource Identifier — URI) also states there is no limit, but BigIP has limited the query string to magical max value, 1354. Any query string exceeding 1354 won't work.

 

Can F5 BigIP experts tell me where I can change that default value for max length of query string? This limitation did cause trouble for situation where BigIP works SAML 2 Identity Provider, and the counterpart Service Provider sends AuthnRequest by REDIRECT binding method.

 

one example of such a problematic long query string:

myqueryparam=nVfJkqNIEr3rK9LUR1kVmxaQVZZZBDsCBEhCgssY%2ByI2sUtfPyizKiurZ6atpw%2BYFIHHC%2FfnzyOcb42TZ9UWdG1cGMGtC5r2Zcyzotm%2BvXidd3WxLZ0mabaFkwfNtvW2B6DIW%2Fwruq3qsi29Mpu%2FgKYJ6jYpC7osmi4P6kNQ94kXnAz5dR63bdVsESQoxr5q2mmLr9Pv16LcLpcE8twHaSpkAguTLECqsmkRx2vmL8xkmRTOE%2FYXiB%2F0P1a%2Fr0z8X0vrwE%2FqwGvL%2Bg2kacr5i8i8zv%2BFUR5FOit%2F7bnuyglxFN0QobP0KIrASTJcL9dL3yEm46bpArFoWqdoX%2Bc4imNf0OUXHD9iqy1BbonVVxTF7fkLV9Ze8MbZ6zx0siaYv2g%2FuIBJ4SdF9NfEue9GzVY4HrUv2v5wnL%2BYQd28RToZzL9%2Fewa3ffOn%2FpSQv4Z1fmZh%2Fv0vOf%2BGfEL%2F%2Fs1vtockmoju6uDHXn7zzviEMAzD14H4WtYRMvGGIiiFTDZ%2Bk0R%2FzD%2FWBr5YhOU%2FWEw7RVkknpMlj7dEK0Ebl%2F4LyKKyTto4%2Fx9IGIKhT6Qvweh98bBl8ccc%2BT2Qvwn0m0t143xpYgf7gWUEYVAHhRe8nAzxdf7H35XR2%2BJj7RRNWNZ58%2Fvw%2F%2FMoKPogK6vA%2F9L8DOyHc38f8L9w9f1b4G3Fwsu6JukD9SmkyvGC5kcCA%2B%2FvQ03CD8JklJNmqpixeXqHfHbvT8N3NpgkmhT5T1L0KT3vIKaTdcH3IrmKFmtf43EfRLWrF5bSWykmyJT3%2BubAZ%2BO3iY%2Fkvg9%2Fifh3Gb2vOHi7Cz56NSVSxI00ghWxUcAdtbANqxb12e3jNlDlVsOvuLyPz9YFMPI5rHYyt0%2BXqzwZlLsgeaV5laNTsRiDNPAUOkdsZyWVTLy8ohAC5WawSHmMJTIdWiUN1oK8kGS3uFQ5H3JS%2BLiqVEEgvaDaqwYYdrokKXNPsisx1c6Q4SsbVbB9wpMno8VrXyROZhepY6WuF3RSubI5EOy5Ol30sLwnmr4z6DErKuNy7X2pOYchqnq9IOIq1gk8BlG9u2Or6B6nl0RiRWa5TJgjMHilp7gF6xIadylJTIDrMjtiSzOOr7GjcrQSOWVV8o29Njt7gWQerKNIwfRVqO5O3OiMu2zU03ZBDvfl8Pr6Qf0nrp%2F074L7RyouK5RinNb5GNDPMy6czow2%2BK6IIjcyNA139wgMIgSRErKuNy7X2pOYchqnq9Iafdasdafdasdad

3 REPLIES 3

Sam_D_
Nimbostratus
Nimbostratus

 any comments?

Sam_D_
Nimbostratus
Nimbostratus

I've got confirmation from BigIP that the second issue is a bug related to APM https://cdn.f5.com/product/bugtracker/ID685593.html

Hi.. may i know if you manage to resolve the max url length. I'm having same issue as only have LTM