I have implemented signalR in Asp.Net webform it's working fine but when i hosted on my server its not working and in console of chrome browser showing below error.
WebSocket connection to 'ws://demo.in/signalr/connect?transport=webSockets&clientProtocol=1.5&connectionToken=aoHc%2BkUmnhPuXWtRjo5iJyAOTzyM5xi6tY1nkUw5Y1AfTr2AWadAb4o4tfsWX1NpwCMFDsKvlKra49NLbeNoCIGCrzvAQ62aAIeYoWl9mixu%2BAOZXdHqbQzHOsVxBZPY&connectionData=%5B%7B%22name%22%3A%22dashboardnewhub%22%7D%5D&tid=5' failed: Establishing a tunnel via proxy server failed.
My Asp.net Application framework version is 4.5.1
IIS version is 8.5
Windows Server is 2012R2
Wedsocket is enable
If anyone know please help me. Thank you in Advance
if you are using proxy setting go to your system proxy setting Internet Options > Connection Tab >Lan settings > Advanced Add your application Url or Ip "ws://demo.in" in exceptions addresses. otherwise you have to set it in your company proxy setting
Related
I am running currently a webserver with ASP.NET Core 3.1 and a Blazor project.
Recently when upgrading to .NET 6.0 I encountered (even with a blank Blazor project) some problems with a websocket error message in the browser only when deployed on my webserver (see message below).
Locally (on Windows 11 x64, VS 22 Preview 4) there are no error messages...
Webserver: Debian 10 x64, .NET 6.0 SDK installed, running on NGINX with websockets enabled (reverse proxy).
Do I miss out on something or is it a problem with the current state of .NET 6.0 and NGINX? I already tried to access the webpage locally on the debian server and the same error message occurs.
Help would be much appreciated!
Greetings!
Error messages within order:
Information: Normalizing '_blazor' to 'http://192.168.178.35/_blazor'.
blazor.server.js:1 WebSocket connection to 'ws://192.168.178.35/_blazor?id=wnPt_fXa9H4Jpia530vPWQ' failed:
Information: (WebSockets transport) There was an error with the transport.
Error: Failed to start the transport 'WebSockets': Error: WebSocket failed to connect. The connection could not be found on the server, either the endpoint may not be a SignalR endpoint, the connection ID is not present on the server, or there is a proxy blocking WebSockets. If you have multiple servers check that sticky sessions are enabled.
Warning: Failed to connect via WebSockets, using the Long Polling fallback transport. This may be due to a VPN or proxy blocking the connection. To troubleshoot this, visit https://aka.ms/blazor-server-using-fallback-long-polling.
Here is the solution described again, maybe a little bit more convenient:
To fix this problem, I changed in the site-configuration (/etc/nginx/sites-available) of nginx the following variables:
proxy_set_header Connection $connection_upgrade;
to
proxy_set_header Connection $http_connection;
For me this solved the problem.
I am working on asp.net mvc web application project in visual studio 2015 with .NET framework 4.5. it was configured to run over ssl port 44302. i had to format my OS. After re-installing everything. it changed to run over other port. when i try to change port manually now it is not working. i re-installed iis express. deleted ssl and using netsh.
still can't able to make it work on port 44302. when i set this to port 44302. iis express does not start it. i am worried if i need to re-install OS or can i solve this.
please have a look in picture>
The "override application URL" checkbox isn't checked so the URL isn't being overridden.
visual studio 2017 localhost didn't send any data under SSL.
I found that the proxy setting for localhost had been hi-jacked by a video downloader program. Went to network settings > proxy and turned it off. Suddenly working!!
I have built a school portal using ASP.NET, it makes use of ASP.NET web administration to carry out authentication and authorization.
On my development environment it works just fine but after uploading the web application onto the web via VS 2010's 'copy web site' tool I can no longer register or login on the site.
When I click on the login or registration buttons I get the following error:
A network-related or instance-specific error occurred while
establishing a connection to SQL Server. The server was not found or
was not accessible. Verify that the instance name is correct and that
SQL Server is configured to allow remote connections. (provider: SQL
Network Interfaces, error: 26 - Error Locating Server/Instance
Specified)
I dont know if it's worthy of note but it's an SQL Server Express Edition DB
Web site is www.confluenceinternational.academy
I usually do this when I'm unsure about the connection: on your desktop, create a new empty file named "test.udl". Double-click it and make your settings according to your DB and server configuration. You can also test your connection from there. When you have everything working, you can take the connection string from that UDL file (open with notepad, e.g.).
Thanks for the speedy replies guys.
I tried all your suggestions but was still stuck. I manage to solve the problem by using Visual Studio 2010's publish to provider option, and running the script on the Plesk Control Panel. After that, I just updated the web.config file to reflect the new database viathe connection string properties...
Now it works just fine, thanks.
I am no longer able to connect to my Asp NET mvc 4 application running on IIS7.5
I have made no change at all and after a computer restart I am getting:
Erro 101 (net::ERR_CONNECTION_RESET)
I am trying to access it from localhost. The application still been developed so I don´t understand why it is happening.
Following instructions I have already done:
Checked IIS services
Re-configured IIS for this application
Flushed DNS
Disabled Windows Firewall
Is there somenthing else I should look at???
Thanks
Found the solution.
For some reason I have might removed the localhost certificate used in the application.
I created a new self-signed certificate, and added it to IIS. Last step was to add this certificate in the application SSL configuration.
That´s all!
Built a simple MVC3 web app to ping a few of our servers for small bits of JSON data and report in a quick UI as a monitoring solution, deployed on Windows 2008 to IIS 7.
All of the outbound HTTP requests via the WebRequest class end up in a error: System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 127.0.0.1:25946
Code works fine when running on a console app on the same server, or as console or web app running on a dev machine. Its only when running as a web app in IIS on the production server that this error happens.
The web app can connect to SQL server and MongoDB but fails at any plain HTTP request. Using an empty WebProxy set to localhost. (with the period) changes the reported error to a 404.
Try looking at the Host (or LMHost) files and make sure that there are no issues wit them.