Abstract

Jonas Mücke, Marcin Nawrocki, Raphael Hiesgen, Patrick Sattler, Johannes Zirngibl, Georg Carle, Jan Luxemburk, Thomas C. Schmidt, Matthias Wählisch,
Waiting for QUIC: Passive Measurements to Understand QUIC Deployments,
Proceedings of the ACM on Networking (PACMNET), Vol. 3, No. CoNEXT4, ACM : New York, December 2025. (in press)
[pdf][BibTeX][Abstract]

Abstract: QUIC experiences a rapid adoption since its standardization in 2021, and hypergiants configure their infrastructure to optimize for QUIC performance. In this paper, we introduce a passive measurement method to study both the progressive rollout and individual hypergiant configurations during the last five years. By analyzing backscatter traffic of the UCSD network telescope, we are able to make the following observations. First, Meta, Google, and Cloudflare configure significantly different maximal retransmission numbers and timeouts. Second, we can identify different off-net deployments of hypergiants, using packet features, such as QUIC connection IDs, packet coalescence, and packet lengths. Third, we observe changing hypergiant deployment configurations during our different measurement periods. Fourth, SCIDs can allow further insights into load balancer deployments, such as the number of servers. We bolster our results using two orthogonal measurements: passive recording of QUIC flows and active probing.

Themes: Internet Measurement and Analysis

 

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