# Microsoft.AspNet.SignalR.SystemWeb

**Kind:** Service

**Source:** `Pams/API/Pams.API/Pams.API.csproj` (line 1)

**Part of:** [Pams](subsystem-pams)

NuGet package dependency

`Microsoft.AspNet.SignalR.SystemWeb` is a NuGet package dependency for the legacy ASP.NET application defined in `Pams.API.csproj`. It provides SignalR integration with the `System.Web` hosting model so server hubs can maintain real-time connections with browser clients.

## Diagram

```mermaid
sequenceDiagram
    participant Browser
    participant SignalRClient
    participant SystemWeb as ASP.NET System.Web
    participant Hub as SignalR Hub

    Browser->>SignalRClient: Start connection
    SignalRClient->>SystemWeb: Negotiate SignalR transport
    SystemWeb->>Hub: Route hub invocation
    Hub-->>SystemWeb: Publish message
    SystemWeb-->>SignalRClient: Send real-time update
    SignalRClient-->>Browser: Handle update
```

## Usage

```typescript
declare const $: any;

const connection = $.hubConnection("/");
const notificationsHub = connection.createHubProxy("notificationsHub");

notificationsHub.on("notificationReceived", (message: string) => {
  console.log("Notification received:", message);
});

connection.start().done(() => {
  notificationsHub.invoke("subscribe");
});
```

## AI Coding Instructions

- Treat this package as a server-side dependency for legacy ASP.NET projects that use `System.Web`.
- Configure SignalR hubs and routes in the ASP.NET application startup path before browser clients connect.
- Keep hub names and client event names aligned between server hub methods and JavaScript proxy calls.
- Use the SignalR browser client compatible with the server package version referenced by `Pams.API.csproj`.

## Used by

1 reference from 1 file. Each is a place in this repository where the symbol is actually used — go read one rather than trusting an example.

### Injected or called by (1)

- `Pams.API` — `Pams/API/Pams.API/Pams.API.csproj`:1