| Issue |
EPJ Web Conf.
Volume 337, 2025
27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024)
|
|
|---|---|---|
| Article Number | 01182 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/epjconf/202533701182 | |
| Published online | 07 October 2025 | |
https://doi.org/10.1051/epjconf/202533701182
Evolving StoRM WebDAV: Delegation of file transfers to NGINX and support for SciTags
1 INFN-CNAF, Viale Berti Pichat 6/2, Bologna, Italy
2 GARR, Via dei Tizii 6, Roma, Italy
* e-mail: luca.bassi@cnaf.infn.it
Published online: 7 October 2025
After the deprecation of the open-source Globus Toolkit used for GridFTP transfers, the WLCG community has shifted its focus to the HTTP protocol. The WebDAV protocol extends HTTP to create, move, copy and delete resources on web servers. StoRM WebDAV provides data storage access and management through the WebDAV protocol over a POSIX file system. Mainly designed to be used by the WLCG community, StoRM WebDAV supports authentication through X.509 certificates, VOMS proxies and JSON Web Tokens (JWT). Moreover, Third-Party Copies (an extension of the WebDAV COPY verb to support copies between data centers) are supported.
With the aim of improving data transfer performance, this contribution describes the changes made to StoRM WebDAV in order to delegate file transfers to the external reverse proxy NGINX, decoupling them from the internal Java implementation. To simplify even more the StoRM WebDAV codebase, also the validation of VOMS proxies and JWTs is delegated to NGINX, augmented with specific modules developed by us. Even with this solution, authorization is still enforced by StoRM WebDAV.
Following the effort of the WLCG community to have better metrics about data flows, this contribution also describes the work done in order to support SciTags, an initiative promoting identification of the science domains and their high-level activities at the network level.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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