CODEWITHSUNDEEP
c#asp.netsignalrasp.net-core-signalr
zane
zane

Reputation: 127

Unable to connect to ASP.NET SignalR hub from JavaScript client

I need to connect to an ASP.NET SignalR hub from JavaScript. I am using the @aspnet/signalr npm package, with the following code to connect.

connection = new signalR.HubConnectionBuilder()
    .withUrl("<link to hub>", { accessTokenFactory: () => token })
    .build();
connection.start()

The same code works to connect to an ASP.NET Core SignalR hub, but for an ASP.NET SignalR hub, it returns the following error: TypeError: Cannot read property 'length' of undefined at "HttpConnection"

Is this an issue with incompatible versions? Can the @aspnet/signalr package be used to connect to an ASP.NET SignalR hub?

Upvotes: 3

Views: 2076

Answers (1)

Frank M
Frank M

Reputation: 1439

Short answer, no you cannot use/mix the client/server packages. ASP.NET Core SignalR isn't compatible with clients or servers for ASP.NET SignalR.

See my older post/accepted answer here - https://stackoverflow.com/a/49153217/6263514

But for newer reference the docs here - https://learn.microsoft.com/en-us/aspnet/core/signalr/version-differences?view=aspnetcore-5.0

Upvotes: 2

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