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<\/center> <\/p>\nFeatures of Arcan: <\/p>\n
- \n
- A blend of composite server, display server, and window manager capabilities. <\/li>\n
- Support for operating in a standalone mode, where the Arcan-based application is a self-sufficient entity, working without additional graphical layers. <\/li>\n
- An integrated multimedia framework that provides tools for graphics, video and audio streaming, animation, image loading, and working with video capture devices.
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<\/center> <\/li>\n- A multiprocess model for connecting data source handlers (e.g., video streams and outputs of running programs).
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<\/center> <\/li>\n- A strict model of privilege separation \u2014 the engine's components are divided into small unprivileged processes that interact through the shared memory interface Shmif. <\/li>\n
- Built-in tools for monitoring and analyzing process crashes. The engine can serialize the internal state of Lua scripts to simplify debugging. <\/li>\n
- The fallback capability to another handler \u2014 in the event of a failure due to a program error, the engine may launch a backup application while preserving the same external data sources and connections. <\/li>\n
- Tools for cooperative access and remote desktop connection. Network access is provided by the graphic server 'arcan-net', which implements the P2P protocol A12, integrating functionalities of technologies such as mDNS (local service discovery), SSH (interactive text shell), X11\/VNC\/RDP (interactive graphical shell), RTSP (media streaming), and HTTP (resource loading and state synchronization).\n
- The Cat9 command shell, which allows for binding command execution to individual cells that form a semblance of a spreadsheet (demonstration video). The proposed concept allows for redirecting data streams between windows, linking data and handlers across different windows similarly to cells in spreadsheets (for example, one can redirect output from one window to a shell handler running in the terminal and use the result in another window).
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<\/center> <\/ul>\nProject-related changes: <\/p>\n
- \n
- The composite server Gamescope, developed by Valve, has been ported, enabling the ability to launch games from Steam without manipulating Xwayland.\n
- The Qt plugin qtarcan has been improved, allowing Arcan to run applications using Qt5 and Qt6, such as Qbittorrent and Binary Ninja.\n
- Patches and a script have been created for launching KeepassXC.\n
- A viewer for the A12 protocol and its interactions is being developed.\n
- The interactive window manager Lasso is in development.\n
- A utility Xkbd2Lua has been added to convert keyboard layouts from X11 to a format supported by Arcan.\n
- Nix packages are being developed to create a bootable working environment based on Arcan, the Durden desktop, and the command shell.\n
- Support for the post-quantum encryption algorithm ML-KEM has been added.\n
- The ability for clients to resume interrupted network connections has been added (after reconnection, the application will be rematched without losing its window state).\n
- The option «—cast» has been added, enabling collaboration among users with a read-only copy of the application output.\n
- The directory server has been updated to support new unified (Unified) and referential (Referential) links, which can be used to combine servers into a single namespace or build chains. servers<\/a>In the first case, the group of servers appears as a single server to the user, while in the second, applications can be launched on one. server<\/a>, connecting to another.\n
- The API has introduced the launch_target function for dynamically launching applications on the server upon client request. A controller can be created for the application — a set of Lua scripts for managing message exchange and resource access.\n
- Support for external resource resolvers has been added, capable of intercepting storage operations and processing resource request operations, such as organizing local caching or loading data from the Web, BitTorrent, or IPFS instead of serving from local disk.\n
- A form of thin clients has been implemented, allowing clients without a full Arcan stack (using only the Smash viewer) to execute program logic on the server. For instance, to launch the desktop environment durden on the server myserver, the command «arcan-net —host-appl myserver@durden» can be executed.\n
- A backend supporting the DAP (Debug Adapter Protocol) for local or remote debugging has been added to the Cat9 command shell.\n
- A significant number of changes related to the development of the A12 protocol, the Lua script execution environment, the network subsystem, the directory server for linking network-distributed components, the shared memory system Shmif, and the egl-dri module have been added. <\/ul>\n
Simultaneously, the Durden desktop environment 0.6.3 has been released. The previous release was formed in 2020. Durden supports tiled and classic window layout modes with full control capabilities using the keyboard. It is possible to work in systems with multiple monitors that have different DPI. <\/p>\n
An advanced clipboard is provided, retaining a history of changes and available in two variants — global and tied to individual windows. It supports keyboard layout switching and works with extended devices such as game controllers. Features like global menus, window title menus, widgets, and separate behavior settings for each window are supported. All settings, including input methods, fonts, and visual effects, can be changed on the fly without the need to reload the configuration. <\/p>\n
- A multiprocess model for connecting data source handlers (e.g., video streams and outputs of running programs).