# 🔍 Description
## Issue References 🔗
This pull request fixes#6165
## Describe Your Solution 🔧
Add HttpClient options for engine ui proxy servlet.
- idleTimeout
- maxConnections
- maxThreads
- requestBufferSize
- responseBufferSize
- timeout
## Types of changes 🔖
- [ ] Bugfix (non-breaking change which fixes an issue)
- [x] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)
## Test Plan 🧪
#### Behavior Without This Pull Request ⚰️
Engine UI proxy requests with large headers( > 4k) are failed with 500 http status.
#### Behavior With This Pull Request 🎉
Increase the value of `kyuubi.frontend.rest.proxy.jetty.client.requestBufferSize` properly(ex: 5k), request with large header has succeeded with 200 status.
#### Related Unit Tests
---
# Checklist 📝
- [x] This patch was not authored or co-authored using [Generative Tooling](https://www.apache.org/legal/generative-tooling.html)
**Be nice. Be informative.**
Closes#6192 from minyk/kyuubi-6165.
Closes#6165
6ef26aa43 [minyk] fix kyuubi version of configs
1812a96eb [minyk] apply spotless
3527cada9 [minyk] set initial parameters to the httpclient of proxy servletholder.
Authored-by: minyk <minykreva@gmail.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>
7413ba584a