MUST, SHOULD, DON'T CARE: TCP Conformance in the Wild

Kosek, Mike; Blöcher, Leo; Rüth, Jan; Zimmermann, Torsten; Hohlfeld, Oliver; Hiller, Jens; Henze, Martin; Zimmermann, Torsten; Hohlfeld, Oliver; Wehrle, Klaus; Zimmermann, Torsten; Hohlfeld, Oliver; Reelfs, Helge; Rüth, Jan; Schmidt, Florian; Zimmermann, Torsten; Hiller, Jens; Wehrle, Klaus; Rüth, Jan; Zimmermann, Torsten; Hohlfeld, Oliver; Zimmermann, Torsten; Wolters, Benedikt; Hohlfeld, Oliver; Wehrle, Klaus; Rüth, Jan; Zimmermann, Torsten; Wolsing, Konrad; Hohlfeld, Oliver; Scheitle, Quirin; Hohlfeld, Oliver; Gamba, Julien; Jelten, Jonas; Zimmermann, Torsten; Strowes, Stephen D.; Vallina-Rodriguez, Narseo; Hohlfeld, Oliver; Reelfs, Jens Helge; Rüth, Jan; Schmidt, Florian; Zimmermann, Torsten; Hiller, Jens; Wehrle, Klaus; Hohlfeld, Oliver; Rüth, Jan; Wolsing, Konrad; Zimmermann, Torsten; Zimmermann, Torsten; Hiller, Jens; Reelfs, Jens Helge; Hein, Pascal; Wehrle, Klaus; Zimmermann, Torsten; Wolters, Benedikt; Hohlfeld, Oliver

doi:https://doi.org/10.1007/978-3-030-44081-7_8

WARNING: This information is likely out-of-date and will not be updated!
Last updated on 2019-12-12

Dr. rer. nat. Torsten Zimmermann

Communication and Distributed Systems
RWTH Aachen University
Ahornstr. 55
52074 Aachen, Germany

E-Mail: zimmermann[[at]]comsys.rwth-aachen.de
Phone: +49 241 80-21414
Office: Building E3, Room 9016

Short CV

Since June 2013, I am a researcher at the Chair of Communication and Distributed Systems. I received my master's degree in April 2013 and my PhD in October 2019, both from RWTH Aachen University. As a member of the Network Architectures group, my research interests lie in scalable and adaptive networks, as well as in content distribution and realization of services for constrained, opportunistic and traditional networks. Currently, I am working in the MAKI project, which aims at developing scalable and adaptive mechanisms for the future Internet.

Projects

netray.io Internet Observatory

As member of the network architectures group, i'm also contributing to the Internet Observatory operated by our group. One goal of this observatory is to study the Internet-wide adoption and usage of (new) Internet protocols by utilizing large-scale measurements. Such measurements are necessary since the Internet as one of the most complex systems ever built is not fully understood. Exemplary, we analyze QUIC, HTTP/2, and TCP initial windows in the Internet. More information and results are available at netray.io.

HTTP/2 Server Push

Currently, the web is experiencing a major protocol shift from HTTP/1.1 to HTTP/2. Among several new techniques used in HTTP/2, Server Push has the potential to reduce the overall page load time by allowing the server to push content to the client without an explicit request. To evaluate the overall HTTP/2 adoption and the use of Server Push, we conducted a large scale measurement study. More information and results are available at push.netray.io.

PowerGraph

The basis for this project was a thesis supervised by Jan Rüth and me. The goal is to provide an affordable and mobile power monitoring solution for mobile devices. The resulting device, named PowerGraph, is realized as an extension board for the Raspberry Pi (B+). More information, e.g., the hardware schematics and the developed software, can be found here.

Publications

See also Google Scholar and DBLP.

2020
30.	Mike Kosek, Leo Blöcher, Jan Rüth, Torsten Zimmermann, and Oliver Hohlfeld MUST, SHOULD, DON'T CARE: TCP Conformance in the Wild Proceedings of the Passive and Active Measurement Conference (PAM '20) Publisher: Springer, March 2020 DOI: https://doi.org/10.1007/978-3-030-44081-7_8 https://arxiv.org/abs/2002.05400
2019
29.	Jens Hiller, Martin Henze, Torsten Zimmermann, Oliver Hohlfeld, and Klaus Wehrle The Case for Session Sharing: Relieving Clients from TLS Handshake Overheads IEEE 44th LCN Symposium on Emerging Topics in Networking (LCN Symposium), Osnabrück, Germany Publisher: IEEE, October 2019 DOI: 10.1109/LCNSymposium47956.2019.9000667 ISBN: 978-1-7281-2561-9
28.	Torsten Zimmermann Improving Content and Service Distribution beyond Infrastructure Upgrades Ph.D. Thesis RWTH Aachen University, Shaker Verlag, Düren, Germany September 2019 ISBN: 978-3-8440-6928-0 https://www.shaker.de/de/...mp;ISBN=978-3-8440-6928-0
27.	Oliver Hohlfeld, Helge Reelfs, Jan Rüth, Florian Schmidt, Torsten Zimmermann, Jens Hiller, and Klaus Wehrle Application-Agnostic Offloading of Packet Processing Technical Report Report Number: arXiv:1904.00671 [cs.NI] COMSYS, RWTH Aachen University, Ahornstr. 55, 52074 Aachen, Germany April 2019 https://arxiv.org/abs/1904.00671
26.	Jan Rüth, Torsten Zimmermann, and Oliver Hohlfeld Hidden Treasures - Recycling Large-Scale Internet Measurements to Study the Internet’s Control Plane In Proceedings of the Passive and Active Measurement Conference (PAM '19) Publisher: Springer, March 2019 DOI: 10.1007/978-3-030-15986-3_4 https://arxiv.org/abs/1901.07265
2018
25.	Torsten Zimmermann, Benedikt Wolters, Oliver Hohlfeld, and Klaus Wehrle Is the Web ready for HTTP/2 Server Push? Proceedings of the 14th International Conference on emerging Networking EXperiments and Technologies (CoNEXT), Crete, Greete Publisher: ACM, December 2018 DOI: 10.1145/3281411.3281434 https://arxiv.org/abs/1810.05554 https://http2.netray.io/interleaving.html
24.	Jan Rüth, Torsten Zimmermann, Konrad Wolsing, and Oliver Hohlfeld Digging into Browser-based Crypto Mining Proceedings of the Internet Measurement Conference (IMC '18) Publisher: ACM, October 2018 DOI: 10.1145/3278532.3278539 https://arxiv.org/abs/1808.00811
23.	Quirin Scheitle, Oliver Hohlfeld, Julien Gamba, Jonas Jelten, Torsten Zimmermann, Stephen D. Strowes, and Narseo Vallina-Rodriguez A Long Way to the Top: Significance, Structure, and Stability of Internet Top Lists Proceedings of the 2018 Internet Measurement Conference (IMC), Boston, USA Publisher: ACM, October 2018 DOI: 10.1145/3278532.3278574 https://arxiv.org/abs/1805.11506
22.	Oliver Hohlfeld, Jens Helge Reelfs, Jan Rüth, Florian Schmidt, Torsten Zimmermann, Jens Hiller, and Klaus Wehrle Application-Agnostic Offloading of Datagram Processing Proceedings of the 2018 30th International Teletraffic Congress (ITC 30), Vienna, Austria Publisher: IEEE, September 2018 DOI: 10.1109/ITC30.2018.00015
21.	Oliver Hohlfeld, Jan Rüth, Konrad Wolsing, and Torsten Zimmermann Characterizing a Meta-CDN In Proceedings of the Passive and Active Measurement Conference (PAM '18), page 114-128. Publisher: Springer, Cham, March 2018 DOI: 10.1007/978-3-319-76481-8_9 ISBN: 978-3-319-76480-1 https://arxiv.org/abs/1803.09990
20.	Torsten Zimmermann, Jens Hiller, Jens Helge Reelfs, Pascal Hein, and Klaus Wehrle SPLIT: Smart Protocol Loading for the IoT Proceedings of the 15th European Conference on Wireless Sensor Networks (EWSN 2018), Madrid, Spain Publisher: ACM, February 2018 ISBN: 978-0-9949886-2-1 https://dl.acm.org/citation.cfm?id=3234847.3234854
2017
19.	Torsten Zimmermann, Benedikt Wolters, and Oliver Hohlfeld A QoE Perspective on HTTP/2 Server Push ACM SIGCOMM 2017 2nd Workshop on QoE-based Analysis and Management of Data Communication Networks (Internet-QoE 2017), Los Angeles, USA Publisher: ACM, August 2017 DOI: 10.1145/3098603.3098604 ISBN: 978-1-4503-5056-3

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