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arXiv · 2504.10054

Implementation and Performance Evaluation of TCP over QUIC Tunnels

Xuanhong Guo·Zekun Bao·Ying Chen
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Abstract

QUIC, a UDP-based transport protocol, addresses several limitations of TCP by offering built-in encryption, stream multiplexing, and improved loss recovery. To extend these benefits to legacy TCP-based applications, this paper explores the implementation and evaluation of a TCP over QUIC tunneling approach. A lightweight, stream-based tunnel is constructed using the Rust-based Quinn library, enabling TCP traffic to traverse QUIC connections transparently. Performance is evaluated under varying network conditions, including packet loss, high latency, and out-of-order delivery. Results indicate that TCP over QUIC maintains significantly higher throughput than native TCP in lossy or unstable environments, with up to a high improvement under 20\% packet loss. However, under ideal network conditions, tunneling introduces modest overhead due to encryption and user-space processing. These findings provide insights into the trade-offs of TCP over QUIC tunneling and its suitability for deployment in dynamic or impaired networks.

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Xuanhong Guo, Zekun Bao, Ying Chen. 2025-10-07. Implementation and Performance Evaluation of TCP over QUIC Tunnels. https://doi.org/10.1007/978-981-95-8417-8_36

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