how to set the signalr use XMLHttpRequest not use others.

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how to set the signalr use XMLHttpRequest not use others.

mc 7,186

I just want to use XMLHttpRequest

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Answer accepted by question author

AgaveJoe 31,361

SignalR falls back to long polling if a web socket connection cannot be made. Long polling uses AJAX and I think this is what you're asking.

Please read the official documentation which illustrates how to configure transport mode in an ASP.NET core application.

ASP.NET Core SignalR configuration

mc 7,186 Reputation points

2023-06-11T14:22:59.5433333+00:00

no that is not what i am asking.

I want to find out where the connection to be made. change the code .

how signalr coonection to wss? how signalr make the web socket connection? where is the code?
AgaveJoe 31,361 Reputation points

2023-06-11T16:26:16.2466667+00:00

I want to find out where the connection to be made. change the code .

Keep in mind, you tagged this post as ASP.NET Core. Maybe you're asking about the JavaScript code that runs in the browser?

ASP.NET Core SignalR JavaScript client

how signalr coonection to wss?

Are you asking how Web Sockets work and not XMLHttpRequest?

The WebSocket API (WebSockets)

how signalr make the web socket connection? where is the code?

SignalR has two parts. A server side called the Hub and a client JavaScript application that runs in the browser. The connection is a web socket and SignalR uses a protocol within the web socket to transfer data. Both the server and client code are open source.

https://github.com/SignalR/SignalR

Your original question is about XMLHttpRequest which is AJAX and your second seems to be about web sockets or SignalR in general. At this point, it's not clear what you asking. I think you need to set aside some time to read the documentation.

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mc 7,186 Reputation points

2023-06-11T14:22:59.5433333+00:00

no that is not what i am asking.

I want to find out where the connection to be made. change the code .

how signalr coonection to wss? how signalr make the web socket connection? where is the code?
AgaveJoe 31,361 Reputation points

2023-06-11T16:26:16.2466667+00:00

I want to find out where the connection to be made. change the code .

Keep in mind, you tagged this post as ASP.NET Core. Maybe you're asking about the JavaScript code that runs in the browser?

ASP.NET Core SignalR JavaScript client

how signalr coonection to wss?

Are you asking how Web Sockets work and not XMLHttpRequest?

The WebSocket API (WebSockets)

how signalr make the web socket connection? where is the code?

SignalR has two parts. A server side called the Hub and a client JavaScript application that runs in the browser. The connection is a web socket and SignalR uses a protocol within the web socket to transfer data. Both the server and client code are open source.

https://github.com/SignalR/SignalR

Your original question is about XMLHttpRequest which is AJAX and your second seems to be about web sockets or SignalR in general. At this point, it's not clear what you asking. I think you need to set aside some time to read the documentation.

Answer 1

to only use XMLHttpRequest, you configure the hub connection to only use the long polling transport:

var connection = new HubConnectionBuilder()
    .WithUrl(myUrl, HttpTransportType.LongPolling)
    .Build();

not sure why you want to do this. it has more processing overhead than web socket, and fallback is supported.

also The signalr server does not support long polling by default. You will need to enable:

app.MapHub<ChatHub>("/chathub", options =>
{
    options.Transports =
        HttpTransportType.WebSockets |
        HttpTransportType.LongPolling;
});

I believe azure signal/r only supports the web sockets transport.

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how to set the signalr use XMLHttpRequest not use others.

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