I was create simple project with .netCore 2.0 and send HttpRequest with HttpClient, that is working well.
But, when I'm migrating from .netCore 2.0 to upper version ( e.g: .NetCore 2.1 or .netCore 3.0 ) this Code is not working.
My Code is:
public async Task<bool> IsValid()
{
string url = "http://api.domain.com/...";
var values = new Dictionary<string, string>()
{
{ "param1", "value1" },
{ "param2", "value2" }
};
HttpClient client = new HttpClient();
var content = new FormUrlEncodedContent(values);
var post = await client.PostAsync(url, content);
if (post.StatusCode == System.Net.HttpStatusCode.OK)
{
return true;
}
return false;
}
I expect the output of httpResponse to bo HttpStatusCode.OK. but the actual output is HttpStatusCode.GatewayTimeout.
I found that:
If I run API server ( http://api.domain.com/ ) in IIS of windows server 2012, all requests is working well.
But When I Use IIS of Windows 8, only HttpRequest with ASP.NET Core sdk 2.0 is working and others not working.
Can anyone help me?
This problem has finally been resolved.
This problem was related to the network and proxy settings in my network.
I realize when api server be in internet network, that is working well. but when api server to be used in local network, Because of using the proxy in my network, all
requests was encountered with error 504 (unless the request was sending with .netCore sdk 2.0 ).
It should be noted I had added this line 192.168.11.125 api.domain.com to host file in Directory c:\windows\system32\drivers\etc\hosts.
and also, I had added Follow Exceptions:
192.168.11.125 api.domain.com
from path:
Control Panel > Network and Internet > Internet Option > Connections Tab > Lan Settings > Advanced > Exceptions panel
But that's not working.
When I picked up the check of Use a proxy server for your lan ... in Local Area Network (LAN) Settings form, all requests working well.
Of course, this question remains that, why The same request is working with .netcore sdk 2.0 ?
what is difference between sending request with .netCore sdk 2.0 and (.netCore sdk 2.1 or .netCore sdk 2.2 or .netCore sdk 3.0)???!!!
Good luck.
Related
I have created a Web API using .net core to POST file (excel).
When attaching the file from the post man it is working as expected but now I am trying to do the same using Azure logic app.
I am using a FTP connector and reading the file from it and then calling the REST api, the end point is getting hit but however I am unable to get the file data.
I am very much new to logic apps and tried to find a lot but no luck.
Web API
[HttpPost("x")]
public async Task<IActionResult> MigrateHistoricalData()
{
int filesCount = HttpContext.Request.Form.Files.Count;
if (filesCount > 0)
{
var file = HttpContext.Request.Form.Files[0];
if (file != null && file.Length > 0)
{
// other logic
}
}
else
{
return new BadRequestObjectResult("No files found in the request.");
}
return null;
}
Error Image:
You could update your browser to the latest version and have a try.
It's a MVC bug, and on 13th of September 2018 Microsoft has implemented a fix for this issue, and it will be released with in ASP.NET Core 2.2.
Set content-type of the HTTP request header to multipart/form-data in the Logic App and see if that helps Logic App Http Connector Header
I recently need to use .net core to do SOAP NTLM login.. to my horror.. I realized ,net core does not come with SOAP support.. fumbling around, I came across SOAPCore on nuget package which has SOAP middleware for .net core. My console app interfacing to .net core 2.1 SDK tries to do NTLM login. Below is the codes, very simple.. it's trying to login to Milestone VMS.
<----------codes--------------->
int MAX_BUFFERSIZE = 2 * 1024 * 1024;
string strURL = "http://192.168.51.207/ServerAPI/ServerCommandService.asmx";
BasicHttpBinding httpBinding = new BasicHttpBinding();
httpBinding.MaxBufferSize = MAX_BUFFERSIZE;
httpBinding.MaxReceivedMessageSize = MAX_BUFFERSIZE;
httpBinding.Security.Mode = BasicHttpSecurityMode.TransportCredentialOnly;
httpBinding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Ntlm; //changed Ntlm to Windows also don't help
EndpointAddress endpoint = new EndpointAddress(strURL);
var factory = new ChannelFactory(httpBinding, endpoint);
CredentialCache cc = new CredentialCache();
NetworkCredential ntcc = new NetworkCredential("user", "password", "domain");
cc.Add(strURL, 80, "ntlm", ntcc);
factory.Credentials.Windows.ClientCredential = cc.GetCredential(strURL, 80, "ntlm");
var client = factory.CreateChannel();
Guid guid = Guid.NewGuid();
LoginInfo lo = client.Login(guid, "");
Console.Write("\ntoken=" + lo.Token);
ConfigurationInfo config = client.GetConfiguration(lo.Token);
... //do something
client.Loguout(guid, lo.Token); //logout
<-------------end of code segment------------>
Now, running this in Windows 10 works fine.. it's able to login and get the info needed.. but funny thing is when it runs on Linux.. I installed BASH for Windows 10 and it's Ubuntu 18.04, and have installed .net core 2.1.300.. it gave an http code 401 exception: "The HTTP request is unauthorized with client authentication scheme 'Ntlm'. The authentication header received from the server was 'Negotiate, Ntlm'."
I've previously read on Stackoverflow about something quite similar and it was said that .net core 2.1 would resolve it.. I'm already using 2.1.300. Is it still not resolved? or am I doing something wrong?
Another question I have pertaining to this, the "ServerCommandServiceSoap" interface is generated using svcutil.exe from the wsdl file provided by Milestone in their SDK. Now, what is the difference between svcutil.exe and wsdl.exe? I noticed that the proxy class generated isn't the same usi ng these two tools.. using svcutil.exe has an interface class with dependencies on System.ServiceModel, while using wsdl.exe has no interface class and depends on System.Web.Services which is not available in .net core. why is it different when they are ran against the same wsdl document?
Can someone please enlighten me on this? thanks a lot.. :)
I am working on a project which involves gathering some sensor data and build a GUI on it, with controlling of sensors. It has following two basic requirements.
Should be a web based solution (Although it will only be used on LAN or even same PC)
It should be executable on both windows IoT core and standard windows PC (Windows 7 and above)
I have decided to use Embedded webserver for Windows IoT, which seems to be a good embedded server based on PCL targeting .NET 4.5 and UWP. So I can execute it on both environments. That is great! But the problem is this web server doesn't support SSL, I have tried to search other servers and have come up with Restup for UWP, which is also a good REST based web server, but it also doesn't support SSL.
I needs an expert opinion, that if there is any possibility I can use SSL protocol in these web servers. Is it possible that it can be implemented using some libraries like OpenSSL etc? (Although I think that it would be too complex and much time taking to implement it correctly)
Edit
I would even like to know about ASP.NET core on Windows 10 IoT Core, if I can build an application for both windows. I found one example but it is DNXbased, and I don't want to follow this way, as DNX is deprecated.
Any help is highly appreciated.
Late answer, but .NET Core 2.0 looks promising with Kestrel. I successfully created a .Net Core 2.0 app on the PI 3 this morning. Pretty nifty and If you already have an Apache web server, you’re almost done. I’m actually going to embed (might not be the right term) my .Net Core 2.0 web application into a UWP app, rather than create multiple unique apps for the touchscreens around the house.
.Net Core 2.0 is still in preview though.
https://learn.microsoft.com/en-us/aspnet/core/fundamentals/servers/kestrel?tabs=aspnetcore2x
I know this post is pretty old, but I have built the solution which you are asking bout. I’m currently running .Net 5.0 on a Raspberry pi. When you build the .net core web project, select the correct target framework and the target runtime to win-arm. Copy the output some directory on the pi and you will have to access the device using powershell to create a scheduled task to start the web project. Something like this:
schtasks /create /tn "Startup Web" /tr c:\startup.bat /sc onstart /ru SYSTEM
That starts a bat file which runs a powershell command which has the following command:
Set-Location C:\apps\vradWebServer\ .\VradTrackerWeb.exe (the .\VradTrackerWeb.exe is on a second line in the file) - the name of the webapp.
That starts the server. If you have any web or apps posting to the webserver you will need an ssl cert. I used no-ip and let’s encrypt for this. For let’s encrypt to work, you will need an external facing web server and have the domain name point to it. Run let’s encrypt on the external server and then copy out the cert and place it in your web directory on the pi. I then have a uwp program that runs on the pi and when it starts, it gets it’s local address and then updates no-ip with the local address, so the local devices communicating will be correctly routed and have the ssl cert. Side note, my uwp app is the startup app on the device. The scheduled task is important because it allows you to run you app and the web server. The following snip is how I get the ip address and then update no-ip.
private string GetLocalIP()
{
string localIP = "";
using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, 0))
{
socket.Connect("8.8.8.8", 65530);
IPEndPoint endPoint = socket.LocalEndPoint as IPEndPoint;
localIP = endPoint.Address.ToString();
}
return localIP;
}//GetLocalIP
private async void UpdateIP()
{
string localIP = "";
string msg = "";
var client = new HttpClient(new HttpClientHandler { Credentials = new NetworkCredential("YourUserName", "YourPassword") });
try
{
localIP = GetLocalIP();
string noipuri = "http://dynupdate.no-ip.com/nic/update?hostname=YourDoman.hopto.org&myip=" + localIP;
using (var response = await client.GetAsync(noipuri))
using (var content = response.Content)
{
msg= await content.ReadAsStringAsync();
}
if (msg.Contains("good") == true || msg.Contains("nochg")==true)
{
SentDynamicIP = true;
LastIPAddress = localIP;
}
else
{
SentDynamicIP = false;
}
}
catch(Exception ex)
{
string x = ex.Message;
}
finally
{
client.Dispose();
}
}//UpdateIP
Our hosting department is not willing to allow ASP.NET core hosting with Kestrel running or even installing the ASP.NET Core Server Hosting Bundle (AspNetCoreModule).
Is there any alternative to allow ASP.NET core in this situation?
Environment: Windows Server 2012 R2 with latest IIS and .NET 4.6.2.
It is a shared hosting environment and the application(s) must be running in IIS.
You can actually run ASP.NET Core in IIS within the worker process (thus not using the ASP.NET Core Module) by using OWIN.
This is possible due to the fact that ASP.NET Core can be hosted on an OWIN server and IIS can be made an OWIN Server.
Have a look at the following OWIN middleware which shows how to run ASP.NET Core on IIS. For a more complete example, see this gist: https://gist.github.com/oliverhanappi/3720641004576c90407eb3803490d1ce.
public class AspNetCoreOwinMiddleware<TAspNetCoreStartup> : OwinMiddleware, IServer
where TAspNetCoreStartup : class
{
private readonly IWebHost _webHost;
private Func<IOwinContext, Task> _appFunc;
IFeatureCollection IServer.Features { get; } = new FeatureCollection();
public AspNetCoreOwinMiddleware(OwinMiddleware next, IAppBuilder app)
: base(next)
{
var appProperties = new AppProperties(app.Properties);
if (appProperties.OnAppDisposing != default(CancellationToken))
appProperties.OnAppDisposing.Register(Dispose);
_webHost = new WebHostBuilder()
.ConfigureServices(s => s.AddSingleton<IServer>(this))
.UseStartup<TAspNetCoreStartup>()
.Build();
_webHost.Start();
}
void IServer.Start<TContext>(IHttpApplication<TContext> application)
{
_appFunc = async owinContext =>
{
var features = new FeatureCollection(new OwinFeatureCollection(owinContext.Environment));
var context = application.CreateContext(features);
try
{
await application.ProcessRequestAsync(context);
application.DisposeContext(context, null);
}
catch (Exception ex)
{
application.DisposeContext(context, ex);
throw;
}
};
}
public override Task Invoke(IOwinContext context)
{
if (_appFunc == null)
throw new InvalidOperationException("ASP.NET Core Web Host not started.");
return _appFunc(context);
}
public void Dispose()
{
_webHost.Dispose();
}
}
Yes, you could use WebListener web server instead of Kestrel. WebListener only works on the Windows platform but since that is where you are running, it's an option for you.
WebListener however does not rely on IIS as a reverse proxy, in fact WebListener can't be used with IIS or IIS Express since it's not compatible with ASP.NET Core Module. But it does give you a non Kestrel option for hosting ASP.NET Core on windows.
You can learn more about it here: https://learn.microsoft.com/en-us/aspnet/core/fundamentals/servers/weblistener
Prior to ASP.Net Core 2.2
If you must host in IIS and you don't want to use Kestrel and you are running on windows, then there are no options. On Windows, you either host with WebListener without IIS or you host with Kestrel using IIS as a reverse proxy. Those are your only two options currently on Windows.
Update: ASP.Net Core 2.2 or later Starting in ASP.Net Core 2.2 there is now support for running ASP.Net Core In Process in IIS. Under such a configuration Kestrel is not used. To learn more see In Process Hosting Model on the Microsoft Docs site or this blog post https://weblog.west-wind.com/posts/2019/Mar/16/ASPNET-Core-Hosting-on-IIS-with-ASPNET-Core-22
There are similar questions but mine is a peculiar case. My signalr application works only partially on IIS 7.5
My SignalR implementation is working only partially.
I'm using SignalR 1.3, .Net Framework 4.0. MVC4
and IIS 7.5 on Wondows 2008r2
The following lines of code do execute. I get an alert and I'm able to send a message to all the clients.
$.connection.hub.start().done(function () {
alert("hi signalr started")
$('#sendmessage').click(function () {
chat.server.send($('#displayname').val(), $('#message').val());
$('#message').val('').focus();
});
});
But
public override Task OnConnected()
{
Clients.Caller.getClientName();
return base.OnConnected();
}
This method is failing to call client method getClientName().
chat.client.getClientName = function () {
//a method that the onConnect method calls to get the user's name
alert("hi");
};
I don't get an alert in this case.
Everything is working fine if I run it on VS 2012.
Please help
Did you add support for extensionless URLs?
http://support.microsoft.com/kb/980368
Also note you will need to update your web server to IIS 8.0 to get WebSockets support.
For further details, see the Supported Platforms doc"
http://www.asp.net/signalr/overview/signalr-20/getting-started-with-signalr-20/supported-platforms