From ef586f5930ac761f8e8e18cde2ebd5248efeaa4a Mon Sep 17 00:00:00 2001 From: Stefan Boberg Date: Fri, 13 Mar 2026 09:24:59 +0100 Subject: Unix Domain Socket auto discovery (#833) This PR adds end-to-end Unix domain socket (UDS) support, allowing zen CLI to discover and connect to UDS-only servers automatically. - **`unix://` URI scheme in zen CLI**: The `-u` / `--hosturl` option now accepts `unix:///path/to/socket` to connect to a zenserver via a Unix domain socket instead of TCP. - **Per-instance shared memory for extended server info**: Each zenserver instance now publishes a small shared memory section (keyed by SessionId) containing per-instance data that doesn't fit in the fixed-size ZenServerEntry -- starting with the UDS socket path. This is a 4KB pagefile-backed section on Windows (`Global\ZenInstance_{sessionid}`) and a POSIX shared memory object on Linux/Mac (`/UnrealEngineZen_{sessionid}`). - **Client-side auto-discovery of UDS servers**: `zen info`, `zen status`, etc. now automatically discover and prefer UDS connections when a server publishes a socket path. Servers running with `--no-network` (UDS-only) are no longer invisible to the CLI. - **`kNoNetwork` flag in ZenServerEntry**: Servers started with `--no-network` advertise this in their shared state entry. Clients skip TCP fallback for these servers, and display commands (`ps`, `status`, `top`) show `-` instead of a port number to indicate TCP is not available. --- src/zen/cmds/status_cmd.cpp | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'src/zen/cmds/status_cmd.cpp') diff --git a/src/zen/cmds/status_cmd.cpp b/src/zen/cmds/status_cmd.cpp index c43f85052..6ed3c42e1 100644 --- a/src/zen/cmds/status_cmd.cpp +++ b/src/zen/cmds/status_cmd.cpp @@ -4,6 +4,7 @@ #include #include +#include #include #include #include @@ -64,7 +65,7 @@ StatusCommand::Run(const ZenCliOptions& GlobalOptions, int argc, char** argv) return; } - ZEN_CONSOLE("{:>5} {:>6} {:>24}", "port", "pid", "session"); + ZEN_CONSOLE("{:>5} {:>6} {:>24} {}", "port", "pid", "session", "socket"); State.Snapshot([&](const ZenServerState::ZenServerEntry& Entry) { bool MatchesAnyPort = (m_Port == 0) && (EffectivePort == 0); bool MatchesEffectivePort = (EffectivePort != 0) && (Entry.EffectiveListenPort.load() == EffectivePort); @@ -73,7 +74,22 @@ StatusCommand::Run(const ZenCliOptions& GlobalOptions, int argc, char** argv) { StringBuilder<25> SessionStringBuilder; Entry.GetSessionId().ToString(SessionStringBuilder); - ZEN_CONSOLE("{:>5} {:>6} {:>24}", Entry.EffectiveListenPort.load(), Entry.Pid.load(), SessionStringBuilder); + + std::string SocketPath; + if (Entry.HasInstanceInfo()) + { + ZenServerInstanceInfo Info; + if (Info.OpenReadOnly(Entry.GetSessionId())) + { + InstanceInfoData Data = Info.Read(); + if (!Data.UnixSocketPath.empty()) + { + SocketPath = PathToUtf8(Data.UnixSocketPath); + } + } + } + std::string PortStr = Entry.IsNoNetwork() ? std::string("-") : fmt::to_string(Entry.EffectiveListenPort.load()); + ZEN_CONSOLE("{:>5} {:>6} {:>24} {}", PortStr, Entry.Pid.load(), SessionStringBuilder, SocketPath); } }); } -- cgit v1.2.3