ASP.NET core SignalR - hub Negotiate - Err_Connection_Refused

Asked Apr 10 '19 at 13:58

Active Aug 21 '19 at 15:25

Viewed 2,458 times

I am working with SignalR for the first time and trying to connect to hub from Angular. I am trying to implement the same in this LINK

I am not sure where this negotiate comes from

OPTIONS http://localhost:5001/messageHub/negotiate net::ERR_CONNECTION_REFUSED

Here is my code.

public startConnection = () => {
this.hubConnection = new signalR.HubConnectionBuilder()
  .withUrl('http://localhost:5001/messageHub')
  .build();

this.hubConnection
  .start()
  .then(() => alert('Connection started'))
  .catch(err => alert('Error while starting SignalR connection: ' + err));
}

Here is appsettings.Development.json

 "Logging": {
"LogLevel": {
  "Default": "Debug",
  "System": "Information",
  "Microsoft": "Information"
}},
"SignalR": {
"messageHub": "http://localhost:5001/messageHub"
  },
"Api": {
"GenerateTokenUrl": "http://localhost:5000/api/Values"
 }

It is giving me this error in Chrome Dev tools

edited Aug 21 '19 at 15:25

Tony Ngo

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asked Apr 10 '19 at 13:58

Chatra

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Shouldn't the port be 5000 and not 5001? Try it out. – User3250 Apr 10 '19 at 14:50
Nope, its still the same error with 5000 – Chatra Apr 10 '19 at 14:59
Share us your `startup.cs`? Does angular and signalR in the same project? If not, try to enable cors in signalR project. – Edward Apr 11 '19 at 05:34
Have you been able to make it works ? – Christophe Chenel Feb 23 '20 at 01:31

ASP.NET core SignalR - hub Negotiate - Err_Connection_Refused

0 Answers0