Open lohitbura opened 2 years ago
I was having the same issue and I managed to fixed it setting the transport in options to LongPolling
hubConnection = HubConnectionBuilder() .withUrl(serverUrl, options: HttpConnectionOptions( transport: HttpTransportType.LongPolling, ))
same issues, any solution?
hi @sefidgaran any solution to fix this problem?
I was having the same issue and I managed to fixed it setting the transport in options to LongPolling
hubConnection = HubConnectionBuilder() .withUrl(serverUrl, options: HttpConnectionOptions( transport: HttpTransportType.LongPolling, ))
Hi @chrcao Have you tried the solution above?
hi @sefidgaran it is not working.
I can confirm that i get the error aswell. I am on flutter 3.0.0. If i try to use the transport option longpolling i will get an error aswell.
I am getting this error as well. When I test locally on windows it works very well, but the error appears when I publish on the linux server. Any solution to fix this problem ?.
In my case I set correct port that solved this problem
I was struggiling with the same ussue, but in my case API-devs created accessToken to API and I used it wrong. So as I understood SignalR package put in headers access tokens and if your API-devs configure token as "&authinticate=tokens_long_string_key_example", it is not gonna work, because server can't negotiate (I didn't remember verbatim the error in this case, but it will be something about negotiation). In my case to resolve this issue I should have in request body access-token
instead of authinticate
. Also really highly reccomend to use this Logger package logging: any
, it is real time-saver
In my case, it's the Authorization that caused this problem, in detail, every step needs to add Authorization in the header including during websocket handshaking. Hope this would help.
I implemented the code . It's Working in some devices . But In Some of the devices it's showing the following error . I guess the main reason is that connection is not establishing.
"The underlying connection was closed before the hub handshake could complete"