| SignalR | |
|---|---|
| Original authors | David Fowler and Damian Edwards |
| Developer | Microsoft |
| Initial release | February 18, 2013; 12 years ago (2013-02-18) |
| Stable release | 2.4.3 / January 14, 2022; 3 years ago (2022-01-14) |
| Repository | |
| Written in | C# |
| Operating system | Microsoft Windows |
| Platform | .NET Framework, .NET |
| Type | Event-drivennetworking |
| License | Apache License 2.0 |
| Website | dotnet |
SignalR is afree and open-sourcesoftware library forMicrosoftASP.NET that allows server code to send asynchronous notifications to client-sideweb applications. The library includes server-side and client-sideJavaScript components.
ASP.NET SignalR is a library forASP.NET developers to add real-time web functionality to their applications. Real-time web functionality is the ability to have server-side code push content to the connected clients as it happens, in real-time.[1]
SignalR takes advantage of several transports, automatically selecting the best available transport given the client's and server's capabilities. SignalR takes advantage ofWebSocket, anHTML5 API that enables bi-directional communication between the browser and server. SignalR will use WebSockets under the covers when it's available, and gracefully fall back to other techniques and technologies when it isn't, while the application code remains the same.[2][3]
SignalR also provides a simple, high-levelAPI for doing server-to-clientRPC (call JavaScript functions in a client's browser from server-side .NET code) in an ASP.NET application, as well as adding useful hooks for management, such as connect/disconnect events, grouping connections, authorization.
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