# Accelerating QUIC's Connection Establishment on High-Latency Access Networks

## TL;DR

This paper introduces QuicSocks, a proxy that reduces connection setup delays for QUIC over high-latency networks by delegating DNS resolution, achieving significant performance improvements without protocol spoofing.

## Contribution

The paper presents a novel QuicSocks proxy that accelerates QUIC connection establishment by offloading DNS resolution, designed for easy deployment on the Internet.

## Key findings

- 10% of nodes saved at least 30ms per connection
- Proxy colocated with ISP DNS resolvers improves performance
- Design avoids IP spoofing and uses standard protocols

## Abstract

A significant amount of connection establishments on the web require a prior domain name resolution by the client. Especially on high-latency access networks, these DNS lookups cause a significant delay on the client's connection establishment with a server. To reduce the overhead of QUIC's connection establishment with prior DNS lookup on these networks, we propose a novel QuicSocks proxy. Basically, the client delegates the domain name resolution towards the QuicSocks proxy. Our results indicate, that colocating our proxy with real-world ISP-provided DNS resolvers provides great performance gains. For example, 10% of our 474 sample nodes distributed across ISP's in Germany would save at least 30ms per QUIC connection establishment. The design of our proposal aims to be readily deployable on the Internet by avoiding IP address spoofing, anticipating Network Address Translators and using the standard DNS and QUIC protocols. In summary, our proposal fosters a faster establishment of QUIC connections for clients on high-latency access networks.