Connection to registry.npmjs.org not closed after fetching package

[pboguslawski]

Your Environment

• verdaccio version: 5.15.4
• node version: 12.22.5~dfsg-2~11u1 from Debian 11
• os: linux

Describe the bug

After fetching package from registry.npmjs.org via verdaccio, verdaccio keeps connection to registry.npmjs.org open.

To Reproduce

Start verdaccio configured with fetching packages from registry.npmjs.org; fetch any package and use tcpdump/iptraf to observe that HTTPS connection from verdaccio to registry.npmjs.org is not closed and some data is still transmitted (keep alives maybe?).

Expected behavior

verdaccio should close its client connection to registry.npmjs.org ASAP after fetching package.

Contribute to Verdaccio

• I'm willing to fix this bug 🥇