https://blog.remijouan.net/posts/ Recent content in Posts on Rémi Jouannet Hugo en-us Copyright © 2026, Rémi Jouannet. Thu, 20 Aug 2026 00:00:00 +0200 https://blog.remijouan.net/posts/libzmq-vsock-pyzmq/ Thu, 20 Aug 2026 00:00:00 +0200 https://blog.remijouan.net/posts/libzmq-vsock-pyzmq/ <h1 id="use-vsock-with-libzmq">Use VSOCK with libzmq</h1> <h2 id="af_vsock">AF_VSOCK</h2> <p>VSOCK is not new anymore it has been around in Linux kernel since 4.8. <a href="https://www.youtube.com/watch?v=QzoBB9NO9Dc">For those</a> who do not know what this is, it was previously developed by VMware under the name VMCI. AF_VSOCK is a socket address family like AF_INET or AF_UNIX. It&rsquo;s an address family designed for communication between a VM (guest) and the underlying hypervisor (host), you can also build communication between multiple guests on the same host. Previously, this kind of communication was done with a serial port, a great example is <a href="https://pve.proxmox.com/wiki/Qemu-guest-agent">https://pve.proxmox.com/wiki/Qemu-guest-agent</a>.</p>