NSX Edge Load balancer returns 400 bad request if URL includes Japanese character

Products

• VMware NSX

Issue/Introduction

Symptoms:

• NSX Edge Load Balancer returns 400 Bad Request if URL includes Japanese character.
• You can not get the expected response only when you use IE but you can if you use Chrome and Firefox.
• It works fine if URL is percent-encoded.
• In the Edge log file, you may see messages similar to:

YYYY-MM-DDThh:mm:ss+00:00 edge loadbalancer[x]: [default]: [local0.info] x - - [DD/MM/YYYY:hh:mm:ss +0000] "<BADREQ>" 400 xxx "" "" x x "x" "x" "<NOSRV>" -1 -1 -1 -1 0 PR-- 0 0 0 0 0 0 0 "" ""

Cause

When NSX Edge Load balancer is runnning with L7 Engine and using HTTP protocol, Edge looks contents in the HTTP request and assumes that URL is percent-encoded. If URL is not encoded, Edge return 400 Bad Request.

Resolution

Confirm URL is percent-encoded.

If you access from IE or an outdated browser, use the latest version of Chrome or Firefox in order to guarantee URL encoding.