Where can I find the contents of signalr/hubs - asp.net-mvc-4

In a typical SignalR view it includes...
<script src="/signalr/hubs"></script>
I'm trying to get my head around SignalR and want to look at the javascript within this folder. But I cant find it within my project.
Also, I understand this contains javascript that is generated customised for my hub class etc. Is this correct?

The /signalr/hubs file is dynamically created by the SignalR server when the app boots up. Since the SignalR server hangs off of the /signalr endpoint it then generates the /hubs ontop of it.
Here's how SignalR 2.0.2 generates the file at a high level: https://github.com/SignalR/SignalR/blob/2.0.2/src/Microsoft.AspNet.SignalR.Core/Hubs/DefaultJavaScriptProxyGenerator.cs .
And here's where it determines that the request is to /signalr/hubs (in 2.0.2) https://github.com/SignalR/SignalR/blob/2.0.2/src/Microsoft.AspNet.SignalR.Core/Hubs/HubDispatcher.cs#L235-L253
Finally to answer your last question, it absolutely does. This is why it's dynamically generated. If you'd ever like to get a physical file that represents the /signalr/hubs endpoint you can follow the instructions here: http://www.asp.net/signalr/overview/signalr-20/hubs-api/hubs-api-guide-javascript-client#manualproxy
Hope this helps!

You are correct. It's dynamically generated so that's why you can't see it in visual studio. Enable directory browsing in your web.config by adding
<system.webServer>
<directoryBrowse enabled="true"/>
</system.webServer>
You can then navigate to localhost/signalr/hubs to see the file contents.

Related

appsettings.{ENVIRONMENT}.json not transforming - Deploying asp.net 5 web app to IIS

In my publish profile for staging (/Properties/PublishProfiles/xxx.pubxml) I have:
<EnvironmentName>Staging</EnvironmentName>
I have a file called appsettings.Staging.json.
When I deploy to the server the file stays as appsettings.Staging.json and doesn't get turned into appsettings.json, as I would expect.
Am I missing a step, shouldn't the transformation take place automatically.
The website doesn't work with appsettings.Staging.json file there.
In web.config on the server there is:
<environmentVariable name="ASPNETCORE_ENVIRONMENT" value="Staging" />
which was added because of the line I added to the publish profile.
Ok, there is no issue here, I mis-understood how it works.
The website wasn't working because in my DAL (Data Access Library) class library it was looking for a file called appsettings.json so it could get the connection string for EF core, which didn't exist. I changed it to look for appsettings.{environment}.json by getting the ASPNETCORE_ENVIRONMENT environment variable at runtime and it works now.

ASP.NET Core hosting - 500 internal server error

I am trying to publish as ASP.NET Core project with a hosting provider that supports ASP.NET Core. I am getting 500 Internal Server Error which I believe is very common. So I searched through the internet and various forums and then I checked the processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" in web.config and they look to be correctly converted with processPath="dotnet" and arguments=".\MyApplication.dll".
I also checked the connection string and it points to production DB server that's working. I confirmed the DB connection by changing the connection string to production DB and running project local. It works and I get the production DB access.
I also tried to get the error info by using the below in my Startup.cs (irrespective of env):
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
app.UseBrowserLink();
I have also enabled stdoutLog in web.config, but I don't see that folder either:
stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout"
I also tried to change applicationUrl and launchUrl in launchSettings.json to my prod Url, but that didn't work as well.
So, the 500 Internal Server Error refuses to go away, and I still don't have a useful error message. The page just says:
Oops.
500 Internal Server Error
An error occurred while starting the application.
I would really appreciate if someone could help me here.
I have also enabled stdoutLog in web.config as but I don't see that folder either:
stdoutLogEnabled="true" stdoutLogFile=".\logs\stdout"
There is one trick here - you must create both folders logs and stdout manually - then and only then IIS will create log file inside logs folder (not stdout as you could expect) - don't ask me why, because I don't know why ;)
Oops. 500 Internal Server Error An error occurred while starting the application.
Usually, means problems with a configuration in Startup.cs - the most common problems include an issue with DB itself, an issue with migrations (if you are using Code First approach), problems with appsettings.js, problems with Social Logins credentials (like missing SecretKey)...
Please refer to log file in .\logs\stdout - this is the quickest way to find details about the problem :)
app.UseDeveloperExceptionPage();
app.UseDatabaseErrorPage();
Those will work after your WebApp fully started, but not while starting the application.
in web.config file change modules="AspNetCoreModuleV2" to modules="AspNetCoreModule"
and watch this video
https://www.youtube.com/watch?v=clCR3k6kkD8
Thanks to Lukasz for his comments. I was able to see the log and it stated that "ClientId option must be provided". The problem was with the UserSecrets. Since secrets.json is only available in Development, there were no secrets found in Production. Once I had the secrets in my appSettings.json, it worked fine.
Moreover, To replicate this in Local environment, just go to Project properties and change the environment variable ASPNETCORE_ENVIRONMENT to 'Production' and run in local. This will replicate the 500 Internal Server Error in local and you'll get the error message.
Also, ensure that the ASP.NET Core Windows Server Hosting bundle is installed. THis creates a reverse proxy between IIS and the Kestral server.
More Info:
https://learn.microsoft.com/en-us/aspnet/core/publishing/iis?tabs=aspnetcore2x#tabpanel_tfsY37MhAQ_aspnetcore2x
I would like to add some more info to #Lukasz Makowej answer.
I found out the reason why to have to create the folder, in microsoft documentation it is said that:
stdoutLogFile - Optional string attribute.
".....Any folders provided in the path must exist in order for the module to create the log file...."
So you have to create it yourself :)
Check it out here:
https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/aspnet-core-module?view=aspnetcore-2.0
I also must said that in my case I had to validate that the web-site had the permissions to access to the "log" folder.
Make sure your web.config is good. I've been stomped more than once by a syntactically good web.config that referred to a module (Rewrite) that wasn't on the server. No error messages anywhere, other than the 500 response error.
Std log wasn't working for me, I had to uninstall all .ENT Core runtime / SDK versions from the server and my local to install the latest one and it worked after publishing everything again from scratch.
Another thing that helped was binding the IIS app to port 5000 without any dns so it actually showed me errors on http://localhost:5000
Encountered this issue yesterday, we also had no logging, no eventlog message whatsoever.
Then we checked the site's authentication settings via the IIS-manager to double-check the settings. And pop suddenly a popup with an error message 'Error on line XXXX'.
Turned out the configuration section was locked in the website's config at server-level.
So try unlocking the relevant IIS configuration settings at server level, as follows:
Open IIS Manager
Select the server in the Connections pane
Open Configuration Editor in the main pane
In the Sections drop down, select the section to unlock, e.g. system.webServer => security => authentication
Click Unlock Attribute in the right pane
Repeat for any other settings which you need to unlock
Restart IIS (optional) - Select the server in the Connections pane, click Restart in the Actions pane

Failure to obtain lock using Lucene and Sitecore

I'm trying to implement Lucene search in Sitecore. Using the default Sitecore.Search implementation, I should be able to get a reference to the index defined in my config file and call index.Rebuild.
I tried using the RebuildDatabaseCrawlers script from the AdvancedDatabaseCrawler, but everytime I call Rebuild, it fails.
The error I receive is:
Lock obtain timed out: SimpleFSLock#C:\sites\MySite\Data\indexes\__mysite\write.lock
I've tried changing permissions (including giving Everyone full perms), restarting databases and IIS, all to no avail. I've also tried stripping my search configuration section down to the bare minimum, with the same result.
Unfortunately I don't have any visibility into what the index.Rebuild() method does, as its inside the Sitecore.Search assembly.
The issue ended up being related to configuration.
Specifically, when trying to remove all superfluous Sitecore.Data.Indexing references from the configuration files after determining that i didn't need both Sitecore.Search and Sitecore.Data.Indexing, I had commented out the following line:
<configuration>
<appSettings>
<add key="Lucene.Net.FSDirectory.class" value="Sitecore.Data.Indexing.FSDirectory, Sitecore.Kernel"/>
</appSettings>
</configuration>
That needs to be there.
Try to adjust the permissions for c:\Temp for your app pool user, e.g. Network Service
You can also try to do the same for: c:\windows\microsoft.net\framework\{version}\Temporary ASP.NET Files

Problem with type of service in ServiceHost directive in wcf service

I am developing a simple wcf service for test. When I test this service with my local IIS 7.5, then it works properly. But when I host it in web IIS, I receive this error:
The type 'WcfServiceLibrary1.Service1',
provided as the Service attribute
value in the ServiceHost directive, or
provided in the configuration element
system.serviceModel/serviceHostingEnvironment/serviceActivations
could not be found.
And my ServiceHost is:
<%# ServiceHost Language="C#" Debug="true" Service="WcfServiceLibrary1.Service1" %>
Please help me resolve this problem
Because I couldn't find this suggested in any of the questions I looked through for this, adding my case here:
I had this problem when I manually changed the namespace in the file MyService.svc.cs, and did not change the Service name in the corresponding file MyService.svc - turned out that it needed to be Service="namespace.classname".
Try using the assembly qualified type name.
This is [Fully Qualified Type Name], [Assembly]
Where [Fully Qualified Type Name] is, in the most common cases YourNamespace.YourType
And [Assembly] is, in the most common cases YourAssemblyName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
It gets more complicated than this (generic types, nested types etc) - but unlikely to be so in your case.
If your application is using the default build options, then I'm going to hazard a guess that the directive should be something like this:
<%# ServiceHost Language="C#" Debug="true"
Service="WcfServiceLibrary1.Service1,
WcfServiceLibrary1,
Version=1.0.0.0,
Culture=neutral,
PublicKeyToken=null" %>
Although you'll probably want to get rid of the newlines there.
Also, make sure your dll has actually been deployed
I had the same issue only when publishing my service but it worked locally.
It turned out to be that the service was referencing a DLL that wasn't being deployed. It's a super special case because it was a system dll (System.Web.Helpers) and thus the project didn't even have a reference to it and thus the "Copy Local" wasn't set to true.
IIS defaults to expecting to see the svc file in the virtual directory, and the binaries inside a bin folder (as marc_s commented).
However, the default build configuration for WCF Library projects is to build inside a bin/Debug folder (or bin/Release). You can change the Output Path to 'bin/' on the project properties Build tab.
Changing this resolved this error for me today.
I had this same problem after I deployed a working service to a new location (new site) in IIS. In inetmgr under the Default Website tree, I hadn't right-clicked the new site and selected Convert to Application - all working now!
Finally my problem solved.
I removed the service directory in my host and created a new virtual directory in the host space. Then I copied my service in new directory where I created it.
Now I can browse the .svc file for service and my client will consume the service.
I don't understand why this problem occurred! I am a little confused!
The answer marked as answer is very difficult to understand. In fact, although it led me to solve my similar problem, I don't know if that's because I accurately understand what the writer was meaning.
I was finding if I pointed an IIS application on my development machine to the actual project directory in which resides the web.config, MyService.svc, and bin folders necessary for the WCF Service Application it just wouldn't work, and was throwing this error. This is despite quadruple checking every setting and ensuring that things were equivalent to other simple, working WCF Applications.
Ultimately, I solved the problem by publishing to a different directory rather than depending on the project files and directory themselves.
Perhaps it was because the files were open in Visual Studio as I was trying to run the WCF application through IIS? I don't know, but the Visual Studio provided localhost:59871/... was working. I don't know if that instance is using the project files or a temporary published version.
Check whether namespace and class written in "Service" of "SeviceHost" is correct .It should be Service="namespace.classname" .
Another reason for this issue is often when a wcf service is moved from one directory to another, and the svc file has not been updated... easiest solution is to double check your .svc file and make sure the service definition is defined correctly.
As I can't up vote #jeromeyers answer at the moment, I want to add that this is the solution that I found for this issue.
Someone had copied and pasted a svc file and associated contract and code files to a new project, but they had not updated the namespaces and class names everywhere. Very frustrating tracking this down as it started with this error :
" name was started with an invalid character. Error processing resource 'file:///C:/...
<% #ServiceHost "
when trying to right click on the .svc file and doing "View in browser".
Even though this is slightly different than the question (not web iis): I got here through search because I was getting this error trying to Debug my service -- if you have multiple services inside a single solution, this error will occur if the solution in question is not built yet, and therefore the DLL not created when you try to access it. So to anyone out there make sure if running locally that the entire solution is built!
had this problem running a test project that was embedded in my solution.
I had to view in browser, then copy that link to a new service reference (delete the old one) then paste it in rather than using the discover utility button in the service reference.
Strange as well, after looking and trying others suggestions, i was still getting the error saying the:
The type ', provided as the Service attribute value in the ServiceHost directive, or provided in the configuration element system.serviceModel/serviceHostingEnvironment/serviceActivations could not be found.
Sure we all get large project with a lot of DLLs. Turned out some of the older components in my solution were targeting .Net 4.5, and newer dll were build with 4.5.1. When the 4.5 dlls referenced the 4.5.1 dlls .... Not sure why i was the happy little guinea pig to be the first on my team to find this. While the fix was obvious and easy enough, just all the dlls to target the same .Net runtime.
Just wish Visual Studio would notice DLLs within the same solution should all target the same .Net runtime and generate a warning/error when building especially with we have a solution and a project reference and the runtimes don't match...
Be sure your compiled dlls are moved to service(IIS directory)
directory.
For example, sometimes Jenkins doesn't move them automatically.
I had the same issue when i uploaded my working localhost service to a new location on host.
I create a new Virtual Directory and published my Service to it via Visual Studio(FTP). Problem Solved.
It happend the same to me and the solution was creating a forder named "bin" and place the dll inside of it. Then, refresh the website on IIS and that's all
I had this problem too, and what did the magic for me was to restart the IIS.
This is a very weird error.
First time hosting WCF Service Application, in IIS ?
Many have solved their problems one way or the other. However if everything is your solution is correct and your error is about host your app in IIS, then ensure your physical path in IIS when you add your website is pointed to the "bin" directory of your solution as seen below in the screen shots.
Please look at https://msdn.microsoft.com/en-us/library/ms733766(v=vs.100).aspx
You need to do 2 things to be able to Host the Service on IIS, or even on Visual Studio's itergrated IIS_EXPRESS.
1) Update the Web.Config to include ServiceActivations
change:
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true" />
to
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true">
<serviceActivations>
<add service="API.Service1" relativeAddress="Service1.svc"/>
</serviceActivations>
</serviceHostingEnvironment>
2) You need to create a directory called App_Code in the root directory.
You now need to move the Service (ex: Service1.svc) from the root directory into the App_Code directory.
So you will have App_Code\Service1.svc
If you browse the Service
http://localhost:63309/Service1.svc it should work.

Disable proxy for entire application?

Ever since upgrading to Visual Studio 2010, I'm running into an issue where the first web request of any type (WebRequest, WebClient, etc.) hangs for about 20 seconds before completing. Subsequent calls work quickly. I've narrowed down the problem to a proxy issue.
If I manually disable proxy settings, I don't experience this delay:
Dim wrq As WebRequest = WebRequest.Create(Url)
wrq.Proxy = Nothing
What's strange is that there are no proxy settings enabled on this machine in Internet Options. What I'm wondering is if there is a way to disable proxy settings for my entire project in one shot without explicitly disabling as above for every web object.
The main reason I want to be able to do this is that I'm trying to use an API (http://code.google.com/p/google-api-for-dotnet/) which uses web requests, but does not provide any way to manually disable proxy settings.
I have found some information suggesting that I need to add some proxy information to the app.config file, but I get errors building my program if I make an edits to that file.
Can anyone point me in the right direction?
Brent - that's the correct solution : adding a defaultProxy element to your application's configuration file.
So for a website, it's the web.config. For an .exe application, it's .config.
And those settings are also correct :-
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.net>
<defaultProxy enabled="false" useDefaultCredentials="false">
<proxy/>
<bypasslist/>
<module/>
</defaultProxy>
</system.net>
</configuration>
Instead of turning off the proxy setting altogether you can try using the bypasslist to turn it off for the servers that you're having problems with.
See http://msdn.microsoft.com/en-us/library/kd3cf2ex.aspx for details and a sample.
If you're having problems changing the app.config I suggest posting the errors and possibly the app.config as well.