Signalr Negotiate

Modify the content of the file to the following. The script block contains functions that execute when the page is rendered by the browser, and attempt to establish the SignalR connection with the server. SignalR for ASP. The actual challenges that the server returns depend on a number of factors, including the security settings for the user, whether the user is logging in from a known device or an unknown device, whether the IP address is within the corporate network, etc. You can also learn to apply these in various ways. Now, with ASP. The SignalR client will append /negotiate to the end of the URL and call our function with the user ID. negotiate function. Real-time Web with SignalR Date: January 6, 2015 Author: adrianhesketh 2 Comments For the last couple of years, one of my teams have been working on building a complete suite of translation technology tools (e. GraphQL is this technology created by Facebook that enables the frontend to negotiate with the backend for what data it wants. For more details on this please check : Real-time with ASP. ae main page is 6. The important parts of this are: 1) The client sends requests an upgrade request with some WebSocket specific headers. I'm trying to implement a chat in my app, with azure asp. The service provides API/SDK/CLI/UI, and rich set of code samples, templates, and demo applications. See the complete profile on LinkedIn and discover Margaret. This post shows how an Angular SignalR client can send secure messages using JWT bearer tokens with an API and an STS server. Reconnections. In fact, the total size of Buid. This is a common hosting scenario on Windows 2008r2 and IIS 7. this works its seems because these older SignalR. skipNegotiation - by default the first step the client takes to establish a connection with a SignalR server is sending a negotiate request to get the capabilities of the server (e. What's special about SignalR is that those messages are immediately picked up by the browser-based clients like the one I created in the following post (at least, the messages are […]. However, SignalR also provides support for C# clients and we can also use the Microsoft. NET Client library. NET SignalR is a. SignalR hub authentication with ADAL JS (part 1) on ITQ | In a previous post I described how to use ADAL JS with Azure AD role-based authorization. New here? Start with our free trials. supported transports), the connection id which identifies the connection on the server side and a redirection URL in case of Azure SignalR Service. I tried to call the /negotiate endpoint and got a connection ID so at least something is working. SignalR poses some small challenges when running in a load balanced environment. The SignalR client will append /negotiate to the end of the URL and call our function with the user ID. Incorporating Azure SignalR service is about as easy at adding the Redis cache. Now, SignalR has been made available to Android and Java developers via an SDK from Microsoft Open Technologies. Origin 'http://localhos:51408' is therefore not allowed access. or let SignalR negotiate its own. NET SignalR is a library for ASP. My site was unstable and my clients furious, with a simple fix performance improved greatly and the instability disapear. Current it always returning NULL to me, which preventing me to access My SPSite or SPWeb from inside the HUB!. Find on GitHub. For the last couple of years, one of my teams have been working on building a complete suite of translation technology tools (e. In fact, the total size of Aadp. Hope this helps! Regards, Ajay. This last point is important because the traffic patterns of interactive messaging do not closely match standard HTTP traffic and can induce unusual loads on some components. Real-time Web with SignalR Date: January 6, 2015 Author: adrianhesketh 2 Comments For the last couple of years, one of my teams have been working on building a complete suite of translation technology tools (e. mvc5 + using Microsoft. Clone via HTTPS Clone with Git or checkout with SVN using the repository's web address. /> Port 80: [19:28:15 GMT+0200 (FLE Standard Time)] SignalR: Negotiating with '/signalr/negotiate'. NET MVC CRUD project. SignalR takes advantage of WebSocket, an HTML5 API that enables bi-directional communication between the browser and server. No more worrying about hosting, scalability, load balancing, and such details! Take advantage of the full spectrum of Azure services. Ticks sent from the server into the browser Console. Using SignalR in WinForms and WPF This sample shows how to create a SignalR server and client in WinForms and WPF. I googled out that this is caused by security settings of the service virtual directory. This project does not require jQuery but it also only support websockets. We’ve all been waiting for the first production release of SignalR for AspNetCore, and supposedly it’s going to be out there any day now. ) If there is no SignalR client available for your target platform, you cannot access the server's endpoint directly. NET sample project and mentioned that hitting the endpoint from a browser isn’t going to work because Active Directory doesn’t know about the application. 2 Answers 2. SignalR NuGet package to your project (generally to your Web layer) and add a dependency to your module:. If you refresh again, sometimes within seconds, it will fail to negotiate anything and simply stops trying to connect. SignalR is used for pushing messages from HTTP server into the client. I can login and make authenticated calls successfully. This is a common hosting scenario on Windows 2008r2 and IIS 7. I really enjoy writing code with Azure Functions, so I though I'd combine the two and have serverless SignalR. Welcome to the Centrify Developer Program. All of the changes are detailed in this blog post. You could take a look into the suggestions outlined in the document Troubleshooting bad gateway errors in Application Gateway for similar steps. Once the connection is in place the client can subscribe to broadcast messages of the service by calling the 'on' function of the HubConnectionBuilder with the method name 'notify' as the first parameter. A commented link list helps getting started. file conversion, translation memory, terminology databases) and business process management (workflow, invoicing, payment) tools. In this post I will build a simple real-time application which will print DateTime. No 'Access-Control-Allow-Origin' header is present on the requested resource. Reflection; using System. Supported on Windows, Linux, and macOS. NET Boilerplate official forum. 为了获取更好的可伸缩性, 我们引入消息队列, 看如下基本流程图: 消息队列MQ监听, 在Web site 服务端一收到消息,马上通过Signalr 推送广播到客户端. Net Signalr Client library for this. SignalR cross domain with CORS 10 November 2015 Comments Posted in JavaScript,. The service acts as a proxy to maintain those connections but will use your app to invoke the methods you defined in your app. It's the equivalent of what Socket. NET Core SignalR take a look at my Pluralsight course "Getting Started With ASP. how can i talk to the new new signalr core from. But when I publish the site on IIS, it breaks. All the documentation for Azure SignalR shows how to use it from an ASP. For more details on this please check : Real-time with ASP. Add the client to a group Now that each client connects to SignalR Service with a unique user ID, we'll need a way to add a user ID to the group that represents the client's selected language. Q and A - Windows Using SignalR in WinForms and WPF sample in C# for Visual Studio 2013. It was written back when SignalR was only at version 0. mvc5 + using Microsoft. NET SignalR. I can login and make authenticated calls successfully. 5 ] app is installed on Windows Server 2008 with IIS 7. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. SignalR NuGet package makes it easier to use ASP. In fact, the total size of Aadp. SignalR with ASP Net Core. NET and serverless applications to provide real-time messaging to SignalR compatible clients. Find on GitHub. Server packages still exposes themselves the old signalr way. The vulnerability is due to improper encoding of user-supplied input by the affected software. I tried to call the /negotiate endpoint and got a connection ID so at least something is working. Ah, excellent! Yes, setting XDG_CONFIG_DIR to a path that Sonarr could write to fixed the problem. The SignalR client will append /negotiate to the end of the URL and call our function with the user ID. This last point is important because the traffic patterns of interactive messaging do not closely match standard HTTP traffic and can induce unusual loads on some components. The main problem is with Timer (which runs in threads) and while it’s doing that if your request is finished in a different thread, then your context will be exposed. This project does not require jQuery but it also only support websockets. While SignalR gives you the flexibility to choose your own transport, it is often a better bet to simply allow the library to choose for you. Curious to know however if you got this working in the latest versions of FireFox and Chrome? I notice you mentioned you tested in IE9. net web api on back-end and xamarin ios on front-end. Both functions will. The vulnerability is due to improper encoding of user-supplied input by the affected software. Reconnections. The SignalR library is already installed in the. SignalR gives ASP. The code above should be quite simple, it takes a message and broadcasts it to all clients by calling Send method on clients, sending in one parameter message along. Error_TransportCannotBeReused Looks up a localized string similar to The transport instance passed to the Negotiate method has already been used. Similar query has been discussed here kindly check that as well. SignalR were used for real-time gameplay Develop and negotiate revised loan repayment terms as necessary. In fact, the total size of Aadp. Impatient as I am, I started using 1. NET, SignalR. Since 2013, ASP. NET MVC 5 [. In this post I'll show a very simple custom HubPipelineModule which can log and trace. In fact, the total size of Aadp. Problems to connect to a SignalR Self-Hosted in a Windows Service. NET Core is not compatible with previous versions of SignalR. Not exactly, you connect to the hub in your app/function on your first call but on the negotiate call, the response actually points the client to your SignalR service. Persistent Connections Low Level Hubs High Level ; Explain: Make sure that the SignalR route is added before the other routes : Why?. NET Core so you can build real-time web applications with all the benefits of ASP. SignalR was released with dotnet 2. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. The important parts of this are: 1) The client sends requests an upgrade request with some WebSocket specific headers. I have used cricapi. Windows Using SignalR in WinForms and WPF sample in C# for Visual Studio 2013. Join Jon Galloway as he shows off all the top. If you are not actually using all the hubs in your app from each client, you could avoid sending all the hub names by not setting up callbacks (e. I was able to fix this by spelling out the allowed origins instead (I actually put the allowed origin in appSettings, and read from there, so it can vary for local dev, test and. 1 is available, no messing up with non-default npm and nuget sources required. NET Core SignalR in ASP. At a high level, the WebSocket portion of SignalR goes through the following steps: - negotiate: use HTTP/HTTPS to get connection info for how to connect to the websocket endpoint - connect: attempt to connect to the websocket endpoint - start: make the WebSocket connection usable by SignalR connections. Abhay has 3 jobs listed on their profile. SignalR included reconnection logic on both the clients and the server. We added a number of new features to SignalR for ASP. Net Signalr Client library for this. To do that, we are going to open the Angular project in Visual Studio Code and type the following command in the terminal window:. Also notice that the SignalRConnectionInfo binding allows the SignalR hub name to be specified, in this case "notifications". You could take a look into the suggestions outlined in the document Troubleshooting bad gateway errors in Application Gateway for similar steps. 64bit, IIS7. I'm a software engineer and aspiring entrepreneur with 15 years experience in tech and have worked with companies of all sizes in areas such as healthcare, agriculture, recruitment, e-commerce and finance. This adds an input binding that generates valid credentials for a client to connect to an Azure SignalR Service hub named chat. 0-beta2 and it's behaving strangely in production environment where an ASP. Q and A - Windows Using SignalR in WinForms and WPF sample in C# for Visual Studio 2013. NET developers have been using SignalR to build real-time web applications. Since it is in preview at the time of writing please see here for instructions. NET Client library. I have created a Xamarin forms application using WebApi and SignalR. SignalR cannot interoperate with other communication libraries (like SOAP or WCF web services. json to configure bindings for the function. NET Core project as a part of the Microsoft. For self-hosted SignalR application, the application server listens to and serves client connections directly. NET Core SignalR". i am trying to use signalR with sharepoint 2013 webparts, your tutorial was very helpful for me "many Thanks :D". NET support for Azure SignalR Service you can:. SignalR establishes a persistent bidirectional connection which enables the server to call client methods or send messages to the client. Scheduler: binding to signalr. For more details on this please check : Real-time with ASP. The STS server is implemented using IdentityServer4 and the API is implemented using ASP. In an earlier post I showed how to set up a SignalR hub that would accept requests and send out messages to browser-based, JavaScript clients. NET SignalR and Azure Mobile. It was written back when SignalR was only at version 0. Curious to know however if you got this working in the latest versions of FireFox and Chrome? I notice you mentioned you tested in IE9. NET Boilerplate official forum. Since it is in preview at the time of writing please see here for instructions. First we include the signalR javascript library, then we build up a connection to SignalR by using the HubConnectionBuilder. We will need 2 functions: One to provide a SignalR endpoint to our client (negotiate) and one to allow to post messages to the SignalR service using a http request (message). Introduction. Do It Yourself Web API Proxy - Kloud Blog I had promised a couple of blogs on dealing with the challenges of distance that are unavoidable as we adopt a variety of dispersed Cloud deployed services. But after hosting the application in iis7. NET Core SignalR take a look at my Pluralsight course "Getting Started With ASP. When things go wrong with complex rich client applications it can be difficult to monitor and diagnose, especially when using complex client-server communication approaches such as websockets, SignalR offers a nice way to hook into its pipeline and add custom exception logging and trace handling. I configured it to use Integrated Windows Authentication rather than allowing Anonymous access. SignalR with ASP Net CoreSignalR is a framework from ASP NET Core allowing us to establish a two way communication between client and server. This adds an input binding that generates valid credentials for a client to connect to an Azure SignalR Service hub named chat. I’ve been able to negotiate, connect and receive the init message from my signalr hub application on azure. @anurse I can confirm that it is working now. The URL we use in WithUrl is the endpoint of the negotiate function in the Function App (without the last url segment '/negotiate'). As noted, I built the sample SignalR application from the Getting Started with SignalR tutorial on. Also notice that the SignalRConnectionInfo binding allows the SignalR hub name to be specified, in this case "notifications". With SignalR Service, the application server will only respond to clients’ negotiate requests, and redirect clients to SignalR Service to establish the persistent client-server connections. NET and Web Tools 2012. View Abhay Singh’s profile on LinkedIn, the world's largest professional community. If you want to learn more about how to setup the SignalR Service, check out this previous article. The Silverlight-application has a SignalR Client, which tries to connect with the Hub over https at startup. If you haven't worked with Azure Functions before, check out their quickstarts. This article shows how to setup a first SignalR Hub in ASP. With the ASP. Now I'm trying to implement an OWIN host and I'm having some difficulty making it work under Kayak. You can force SignalR to choose a specific technique as long as you have requirements that limit what is allowed. The Cosmos DB Azure Functions trigger can be used in conjunction with the Azure SignalR Service to create real-time notifications of changes made to data in Cosmos DB, all in a serverless way. Cross-platform. NET Web API, designed to offer developers simple yet powerful access to host HTTP-centric web APIs, including…. This is a prerelease version of Microsoft. myMethod =. Using the SignalR JavaScript library (as above) we can create 2 connected web page clients. The suggestion of making /negotiate a POST request and putting connectionData in the body sounds reasonable as long as JSONP isn't required. It was written back when SignalR was only at version 0. Origin 'http://localhos:51408' is therefore not allowed access. Since 2013, ASP. NET SignalR. This project does not require jQuery but it also only support websockets. SignalR Service is fully managed which makes it easy to add real-time communication functionality to your application. CORS is more secure than JSONP. I used dot net frame work 4 for this. SignalR is a new framework under the ASP. This helps against obvious spoofing attacks but there are quite a few more attack vectors. Use a new transport instance each time you start a new connection. Thanks to Dennis Alberti for his help in setting up the code example. The service acts as a proxy to maintain those connections but will use your app to invoke the methods you defined in your app. SignalR Service is fully managed which makes it easy to add real-time communication functionality to your application. The SignalR Broadcast Listener library is nothing but a SignalR Hub event listener wrapper on top of SignalR. Login & Authentication for your ASP. The service acts as a proxy to maintain those connections but will use your app to invoke the methods you defined in your app. This article gives a brief overview of SignalR. Happy SignalRing!. The Cosmos DB Azure Functions trigger can be used in conjunction with the Azure SignalR Service to create real-time notifications of changes made to data in Cosmos DB, all in a serverless way. LeanSentry Blog. This adds an input binding that generates valid credentials for a client to connect to an Azure SignalR Service hub named chat. If the issue still persist, to take a closer look at the issue and to identify the root cause, you could open a support ticket as described in this link How to create an Azure support request. Let’s jump right in! We do still share the same codebase with Idaptive. you can see from the url it exposes at /signalr/hubs. cshtml view. Please check the steps mentioned in the link to identify/trace and rectify the issue: SignalR Troubleshooting. Scheduler: binding to signalr. Configuration() :. to - Chris Noring. This will make more sense in a second, but for now, we need a second function in our API called "negotiate". Create the Angular-SignalR service to communicate with SignalR hubs. In this post I would like to describe a way to use the OAuth Bearer Token authentication with SignalR by passing the token over a cookie into SignalR pipeline. Not exactly, you connect to the hub in your app/function on your first call but on the negotiate call, the response actually points the client to your SignalR service. After some investigation, I found that WebSockets first communicates over HTTP in order to negotiate with the server and “upgrade” a connection to a WebSocket. 6, and as happens often enough, the library changed enough that the code no longer worked with SignalR 1. in eclipse or spring tools suite, add new class or package, example, shortcut ctrl+n. SignalR Service is fully managed which makes it easy to add real-time communication functionality to your application. If the client capabilities are known, then a transport can be specified when the client connection is started. You can force SignalR to choose a specific technique as long as you have requirements that limit what is allowed. A Web client is also included. Welcome to the Centrify Developer Program. Manually serializing data. i am trying to use signalR with sharepoint 2013 webparts, your tutorial was very helpful for me "many Thanks :D". For more details on this please check : Real-time with ASP. 3 and, in my case, was solved by uninstalling and re-installing all the SignalR/Owin packages. 今天我们来实现服务端消息推送到Web端, 首先回顾一下它抽象层次图是这样的:. This project does not require jQuery but it also only support websockets. x client running in hololens?. NET, SignalR. The first was using a WCF Custom Channel to cache SharePoint content which is now a bit old school. Please check the steps mentioned in the link to identify/trace and rectify the issue: SignalR Troubleshooting. The service acts as a proxy to maintain those connections but will use your app to invoke the methods you defined in your app. I used dot net frame work 4 for this. As I've described in several previous posts, self hosting SignalR is very straight forward to set up. I can login and make authenticated calls successfully. Azure SignalR Service now supports Event Grid! microsoft. If the issue still persist, to take a closer look at the issue and to identify the root cause, you could open a support ticket as described in this link How to create an Azure support request. But when I publish the site on IIS, it breaks. Net Core SignalR helps writing real-time web application. Open source. net SignalR, ASP. In Katana (Microsoft's OWIN framework and host implementation) there is an abstraction for creating middleware that does authentication. See the complete profile on LinkedIn and discover Abhay’s. In this post I'll show a very simple custom HubPipelineModule which can log and trace. NET Framework 4. If you refresh again, sometimes within seconds, it will fail to negotiate anything and simply stops trying to connect. A framework for building web apps and services with. CORS is more secure than JSONP. config file at the root of your application or site:. I am using SignalR 2. The functional equivalent of socket. You can also learn to apply these in various ways. NET developers use it often for apps that need frequent server updates; chat is the classic example. Another design decision that seemed like a good idea when SignalR first came out was automatic reconnections. This is a prerelease version of Microsoft. 70% of websites need less resources to load. Should be resolved by this commit, Nuget packages are not yet updated so it would be great if you could build from the repo and test if it solves the issue. The STS server is implemented using IdentityServer4 and the API is implemented using ASP. In this post I would like to describe a way to use the OAuth Bearer Token authentication with SignalR by passing the token over a cookie into SignalR pipeline. Learn how you can use GraphQL in. Both functions will. We have set up and are using Azure SignalR Service successfully. Reconnections. Fallback to other communication options such as long polling are not supported. Net Core has simplified its internal structure and uses https by default and each connection receives a randomised connectionId which makes it hard to guess the connection id. As noted, I built the sample SignalR application from the Getting Started with SignalR tutorial on. Since it is in preview at the time of writing please see here for instructions. 2 release! This release includes a pile of great new features, including project templates, web tooling, and more. The other day I noticed that the Android version of the Honeywell Lyric application is writing log files to the internal storage. Trying to get SignalR working on the webserver(IIS 8, Server 2012, websockets installed,. 2版本中,并且它的开发团队还要使用Type对它的java客户端进行重写,服务端方面也会贴近ASP. Its working fine with visual studio 2012. The important parts of this are: 1) The client sends requests an upgrade request with some WebSocket specific headers. My scenario was that I had a SignalR hub which was hosted on IIS and a javascript client application which was connecting to this hub. NET applications. 1 (latest release at the time of this posting). If the issue still persist, to take a closer look at the issue and to identify the root cause, you could open a support ticket as described in this link How to create an Azure support request. NET Core so you can build real-time web applications with all the benefits of ASP. However, the. In Katana (Microsoft’s OWIN framework and host implementation) there is an abstraction for creating middleware that does authentication. The service provides API/SDK/CLI/UI, and rich set of code samples, templates, and demo applications. Introduction. You should now have a new folder so-signalr/server containing the ASP. Everything works fine when running locally on my VS 2012. Manually serializing data. Net Core SignalR helps writing real-time web application. 2 and use it with an Angular client. But when I publish the site on IIS, it breaks. NET Core so you can build real-time web applications with all the benefits of ASP. SignalR will use WebSockets under the covers when it's available, and gracefully fall back to other techniques and technologies when it isn't, while the application code remains the same. Although SignalR uses long polling, the response going back from the server to a client is vastly improved rather than having to do a pull on an interval, which was the approach for AJAX-enabled applications before. negotiate function. Nice summary of the main pain points you'll hit with cross-domain calls with SignalR. Its working fine with visual studio 2012. At a high level, the WebSocket portion of SignalR goes through the following steps: - negotiate: use HTTP/HTTPS to get connection info for how to connect to the websocket endpoint - connect: attempt to connect to the websocket endpoint - start: make the WebSocket connection usable by SignalR connections. Now I'm trying to implement an OWIN host and I'm having some difficulty making it work under Kayak. Now the client can negotiate a connection to the Azure SignalR Service via our Function App. i am trying to use signalR with sharepoint 2013 webparts, your tutorial was very helpful for me "many Thanks :D". The authentication header received from the server was 'Negotiate,NTLM'. 3) for the client, which getting a JWT code. IO is for Node. Should be resolved by this commit, Nuget packages are not yet updated so it would be great if you could build from the repo and test if it solves the issue. We are going to look at sharing a video stream between two clients using the PeerConnection API and a simple SignalR signaling server. I have found that I can only run/debug the IOS application from Xamarin Studio on the Mac otherwise SignalR did not work at all with a "HttpClientHandler. SignalR is awesome when it comes to enabling real-time communications for your application. A Web client is also included. Message: Invalid URI: The format of the URI could not be determined. SignalR with ASP Net CoreSignalR is a framework from ASP NET Core allowing us to establish a two way communication between client and server. Cpprestsdk https example. Net Core is a new. A major thing implemented around here is that client events will be attached to receive the message broadcasted by the. The SignalR client will append /negotiate to the end of the URL and call our function with the user ID. Since we GA'ed Azure SignalR Service in last September, serverless has become a very popular use case in Azure SignalR Service and is used by many …. I configured it to use Integrated Windows Authentication rather than allowing Anonymous access. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: