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From YouTube: ASP.NET Community Standup - April 7th 2020 - gRPC Update with Sourabh Shirhatti & James NK

Description

Join members from the ASP.NET teams for our community standup covering great community contributions for ASP.NET, ASP.NET Core, and more.

Community links for this week: https://www.theurlist.com/aspnet-standup-2020-04-07

A

At the magic button does some shoo shoo-shoo things: okay, first of all, I have to ask cuz my audio wasn't working in the previous shows and I spent a bunch of time, troubleshooting and testing, and everyone on the stream hear me and hear our friends here, sir Rob and James.

B

A

I have to talk you're required to talk at this point. Okay,.

B

A

C

A

Okay, so somebody on the stream- please let us know if you can hear okay and then we will dig right in.

A

Yep sound is good, hooray, okay, wonderful, I'm, gonna, dig right in to the community links, I've got 15 community links and after that we've got a gr. Pc update from Rob and James and I want to give them plenty of time. So here we go community links, I messed around with my stream deck today, I'm quite proud.

A

So, first of all, by the way James you had the hilarious tweet about everybody working from home.

A

What was it people working from home for years, web cam and had set the people working from home for a few days streamed at ring light? You know, like maybe things and yeah I blame.

C

Hanselman bye, hi.

A

Okay, so sir Rob, you you posted about this, the asp net core updates about in a 5 preview. So this is cool nice to see the previews rolling along I. Also you linked over in the docs and I included those. This is just a reminder for people that may not know this. We have these. We've been doing these every month, a listing of what's new in the docs. This is a great great place to see.

A

What's changed, what's new I know some people, you know, watch these and keep an eye on them, tweet them out and stuff. But this this is really cool to just kind of keep up with the new stuff there.

A

One of them that I want to dig into a bit here is the migration from three one: two, three five. So this is the the walkthrough on what to do and you know not a whole lot. You know updating, SDK, updating, target framework package, references, docker images if you've got them so pretty straightforward, also a link in here to the breaking changes and far as breaking changes. You know not too much that I saw here.

A

Some changes in namespaces for a sure and signal are some other kind of smaller changes in signal are and then static files, CSV content type changed to standards, compliant I, that's exciting, I guess so. We've gone it used to be octet stream, and now it's text CSV yeah. We are now RFC, seven one one one compliant, which things me great joy, also keeping in that theme I, try and group him. So there's like a little flow to the whole segment here. So so she had doing his blogging up a storm.

A

You know blogging every week here, he's talking about dotnet v, Visual Studio, 2019 preview and C sharp 9, but kind of all the new fun stuff, I'm gonna jump through there's quite a bit here. He talks about you know setting the stage what is daunting at five. You know what are all these things it talks about. What's in the preview I'm going really fast here, what's in dotnet, five so and how to get started with it, so you know download it looking at.

A

What's in the templates, some minor changes that you'll see in the templates and then this is kind of cool he digs into some c-sharp nine features. So some things like the width expression, I honestly, haven't seen this before. So that's um that is interesting and then another thing here is: he talks about record the records proposal. That's something I know. People have been interested in for a long time, so um so I'm interested to see how that shapes up and that's something I believe that's kind of other languages. I have that I know are f-sharp.

A

Friends always make fun of us for not having a record type. So there's that talking about what's in this asp net 5 project types and some things like the?

A

Where that you know, we've got g RPC service worker service, razor class library just where they have moved as far as you know, location and then also blazer blazer server, and then you also hear talking about the migration which we already covered, so nice, comprehensive, post, okay, cool posts in a series from Jimmy Bogart, so he's talking about end-to-end, Diagnostics and tracing. So you know: we've looked over over the years.

A

We've people have posted about things like the face context, being both a standard and also the you know that asp net and dotnet we're, including some support for it.

A

So here he was going through and looking at the overall problem of doing distributed, tracing across a complex system with a lot of micro services, and then you know what he went through in order to do that so comprehensive tracing all the way through diagnostic events, all the way through and ending up with something like this, and so this included a is peanut core HTTP client, rabbit, mq and sequel. So that is a nice thing to do, but can he do it so then he continues through.

A

You know talks about the system requirements, there's a decent amount of code in here and and kinda short on time, so I'll just kind of rip through, but does talk about the trace context as a standard talks about the support in dotnet core 3, but that was, you know, included in botnet, core 3 and then I'm going to wrap really fast through there's some really beautiful code here, but I want to just jump to the end where he shows this is his example service.

A

So he actually built out a dummy distributed system and you know using n service bus and- and you know just kind of following and seeing if it would wear and blogging things out and at the very end, you know testing this out using swagger and he's actually getting these. These um you know trace messages all the way through. So.

B

They don't like me, complexity here, to scare people, because we have we propagate trace contacts by default. You just have one ESP net or application calling another it just works out of the box, and, like me, even our error page includes the trace contacts by default. I should.

A

Like to see more I think what he was looking at was into inside his services with that propagate as well. If you're calling, if you have different like.

B

Would have to capture that context and propagators? Oh, my not having that this is there's no built-in support with RabbitMQ and he's actually instrumented like the rapid enqueue go to capture the base. Contacts are propagated, yeah.

A

And here also in service bus as well right, someone.

C

Asked whether someone asked me whether this works with gr pc and it does just because gr pc, it's built on top of HTTP client, which will propagate their necessary header and it's hosted on asp.net core, which will read the necessary header, so pretty much. Anything which is running in asp.net will be able to utilize this and as long as you're making calls using either age to be client or your propagating that header manually. All this information should just float automatically all.

A

Right I'm bringing up the appears we had and we had a problem with, because the fun in starting the show up below that are watching on YouTube are on their own link.

A

All right. Once I finished Community Links I'll tweet out the updated link that was, we had an expired subscription that we saw in our services right when we started the stream, and so it apparently reset the end link all right: cool Andrew Locke talking about five different ways to set URLs in an SP net core application. So so talking, first of all of all about what the different URLs are, then these are the five that you've got.

A

You've got use URLs in program CS that you can set that in the program start up, you've got environment variables that you can set dotnet, URLs or ASP nut core URLs. You also can set them using command line, so you can do dash dash URLs, you've also got launch settings, dot, Jason, that's red and then finally, you've got kestrel server options and you can set them there. So he talks about the different kinds of bindings. You can use. He talks.

A

He then just walking through examples of the different types you know: here's the are you setting with the use URLs the different environment variables you can set, there's also the command-line options and launch settings. Of course you can set those directly in Visual Studio or you can just set them in the JSON file and then finally, I wasn't familiar with the kestrel server options and I'm not actually sure where you'd use that- and he said he didn't know either really.

A

He said you know it's um it's available, but he hasn't had an opportunity at it to use it. I guess if you're just directly using kestrel for some reason, so there's that and then kind of what he wraps up with is you know you could use URL use URLs, but not really suitable for production, URLs and environment variables. You could set those in production that would be kind of a handy place to do that and then bunch settings for development. So you know a lot of different options.

A

All right couple of Blazers, so, first of all, mobile blazer bindings and Chris Singh t is digging into layout and styling. This is interesting to watch as this continues to progress and and sir Chris's, you know, writing up how you can go through and style these up, and these are you know this is interesting cuz. This is creating xamarin forms applications, but using the syntax coming from blazer.

A

So but you you know the the idea is that you're, using blazer syntax as much as possible deaths talk about CSS styles, with with an important note at the top, and then talks about you know just going through and setting specific styles on things. So this is neat to see this progress and then you know kind of hopefully I like the idea of writing xamarin applications using my web skills. So it's stuff, one of their cool blazer link, Steve Sanderson tweeted. This out. This is from SK and this is a blazer material library.

A

So this has really neat a whole. You know pretty comprehensive material library, material design, library for building blazer applications.

A

So this this is, you know these are all kinds of um components that allow you to easily build some pretty nice-looking dashboards and all kinds of stuff, good stuff, alright, getting towards the end Magnus talking about custom data types in asp net core web api's. So he talks about. You know that you can use, you can have the automatically generated swagger and that works well for simple types. You know you just say you know you swagger and you know just generate.

A

If you have complex types, nested types or if you have something specific, then there are other things that you can do so. First of all, he talks about that. You can do map type. So here he shows you know, mapping a type using the map type you can also and and showing how that's written out. You can do some other things like you and you can also include an eye open, API writer, to write out what you want to see. So that's what is displayed in the documentation.

A

You can control serialization and then you can also for for more complex things. He talks about cases where, if you're taking in parameters, actually writing your own model binder that handles those cases. So what I? My main takeaway from this is it's nice to know that if I need to customize my swagger I can do it without having to do it all or nothing. I got to write my own swagger, pretty neat, okay and then sreob. You sent these two over to me. So this is pretty neat.

A

Anthony Geordi has been writing a lot of blog posts, a huge series on G RPC. So here's just two that we picked out there's one on resiliency with poly. So Paulie is a library that allows for all sea based resilience or what is it Tran, transient fault handling, so things like retry circuit, breaker, timeout, all kinds of stuff, so here just walking through you know how to configure some policies and like, for instance, here wait and retry async, and this doesn't look like a huge amount of code.

A

It actually looks pretty standard for what I've seen with poly.

B

There's just one thing that I want to get people's attention to is that your PC doesn't use HTTP status scores going to get like RPC status codes, so I actually think like when you quickly scroll, Boston I realize that Anthony and I pull that out and made sure not to fall for the usual gotcha. He was checking the GPC status code.

A

Right: okay, yeah I, see that, like.

C

This this will probably using poly like this, will probably only work for you Nuri. She RPC calls with a unity. Rpc call effort, fails upfront. It will put that status and the header. But if you were streaming and you've already sent message, then headers have already been sent. So Polly won't get a failure status code because it will come in and the trailers so yeah.

C

This works with unary calls, but not so much with streaming calls. Okay.

A

All right and then another post from him- and this is on global error- handling which ERP C and G RPC status code. So if I'd read this before I would have noticed the one you were pointing out right so that there are different status codes in HTTP, so I'm, not sure. If there's anything else, we want to call out here. There are these different kinds of statuses.

C

One one thing about Jia PC is when an error is thrown you'll need to, and you want to catch it and process it in a central place. You need to do it in an interceptor rather than a piece of middleware, because GBC won't propagate the exception to middleware, because it needs to return specific status back to the response, but this example shows how to do that and an interceptor okay.

A

All right- and that is the last link I had all of these whoa. All of these are saved and I mean this is just wonderful. This is my day here that I'm having these are all saved in a URL list, and so this is included in the show, notes and and I'll include this in the chats and stuff, and so now let us go to the everyone display.

A

Hopefully this shows all of us totally does ray. Okay, so welcome so, and James you're, calling in from the future it's April, 8th and as.

C

A

Is awesome so you're you're gonna be talking to us about G RPC? Yes,.

C

Should I go first, sir?.

B

C

Let me I may share my screen.

C

Okay, I've got a couple of slides I can can everyone see that yep cool, so we release a PC worth donate three back in November, I, believe or a bit earlier, and one of the things I've been looking at since then is how can we make it so that everyone can use GOP see if they want to so I've got a slide here, just showing a couple of pros and cons of GOP see compared to regular restful.

C

Ht PAP is I, won't go into all of these in detail, but if I was going to summarize the two approaches as GOP C's contract first nature offers high performance through its binary. Serialization and use of H should be, and also a great developer productivity experience through code generation. It will automatically generate service stubs for you and a client. Meanwhile hgp api's, they offer simplicity, ease of getting started and the widest audience. Everything is just text base text based so HTTP 1.1. That's just text JSON, that's just text! You could create a request and notepad.

C

If you want so 1.1 rest, you can basically use everywhere. So we've been thinking about.

C

How can we make it so that if you want the benefits of GOP see how can you still use them if your infrastructure doesn't support HTTP, for example, your client might not support it or perhaps a proxy that sits between you and your end server, because HTTP 2 really needs to work in to end and then on the other hand, if you want to use G RBC, and you also want HTTP API, how can you get both without duplicating all your effort, so starting off GOP, see I'm a browser.

C

Modern browsers, have great support for HTTP. If you're browsing a web site like Facebook or Google or dotnet those websites, they'll all be returning attributed for you now, the problem is JavaScript. Api is haven't quite caught up, so it's xmlhttprequest and fetch, which you commonly use in JavaScript to make HTTP requests. They don't provide low-level access to aid should be to friend, H HTTP, to frames so because of that, it's not possible to build a gob, C, client and the browser.

C

So the workaround is this slight modification of the standard called G RPC web service was created by the GRDC team. It modifies the spec slightly, so it supports HTTP 1.1 and to do that sacrifices. A couple of features so client streaming and bi-directional streaming, but server streaming is still supported. So how.

B

C

Pc web work, so if we imagine, we've got a browser and in our browser we have a JavaScript web app and we want to talk to a G RPC service and our back-end. Perhaps who want to fetch a to do list? We can't make that call using G RPC over it should be because our client over here doesn't support it.

C

So the solution to this as G RPC web, so it supports any version of HTTP and the way gr PC web has traditionally been implemented as a proxy would sit in between the client which makes the tree RPC web request over HTTP to the proxy. In this case the proxy is n boy, it's written as a proxy by the CNC. If it knows about G RPC web and can translate to G RPC I mean it forces that request on to our G RPC service, using standard G RPC of HTTP.

C

So the good thing about this is our service over here doesn't need to know anything other about ER PC web. So this invoice proxy can work with any gob C implementation, including the asp.net core implementation. The downside is, if you're not already using, employ as your proxy you're, introducing an additional HTTP, hop and you're also running an extra process or if you're in kubernetes, contain an apart and then there's also a bit of complexity around having to learn invoice set it up, maintain it. It's just more moving parts being introduced and to your solution.

C

So what we've done in asp.net core is we've added support for geo PC web without a proxy, so our G RPC services with an asp.net can host g a b c and g OB c web side-by-side benefits as there's high performance. We don't have the overhead of jumping through an additional process and additional HTTP hop and it's easier to set up.

C

I'll show you how in a couple of minutes, but you can set up geo, PC web and just a couple of lines if you're curious about the implementation, this saw is some proxy and going on. But now it happens inside the kestrel process, the asp.net process- and it's really just a piece of middleware. So the middleware will intercept the incoming request as it moves through the request pipeline.

C

It will make some minor modifications to it, mostly around headers and then all fought it on server, T, RPC service and we've also done the same thing with a geo, PC web client and dotnet. So, just like you can have incoming middleware and asp.net. You can have outgoing middleware when you're using the HTTP client, and because of that we have a geo, PC web client, written and Donette.

C

You might wonder what what is the benefit of that, like we've already got this JavaScript implementation over here in our browser, and the benefit of that is we're able to support blazer, so Blazer sitting and the browser has the same constraints around HTTP, so using Chi, RPC web-enabled, Donna client enables it to talk to services. I won't demo that today, but I believe Steve demoed a couple of stand-ups ago. Blaser talking to G RPC and the other usage for a Donna client is, if you're, in a client which doesn't fully support HP.

C

So yet so xamarin is in the process of supporting HP to and I, don't believe unity has. Full support for H should be two and its client just yet those environments can use G RPC web and when H should be to a supported end-to-end. It is quite a simple process to switch over to using full G RPC.

C

Okay, so I'll do a demo now. So this website, which I've got set up, it, is hosting G RPC. So the first thing we'll take a look at is the proto file. So this is just a standard G RPC protocol. There is nothing special about it whatsoever, I haven't changed it. It's got a couple of methods on it and messages and that's pretty much sure we have an implementation of our G RPC contract on the server. So our say, hello message, method returns, hello, plus the request name, and then we have streaming implementation.

C

So this will take the incoming name and will stream it back multiple times until the client cancels it. Neither of these have been changed whatsoever to support GOP C web. The differences start to come in and the start up file. So in the startup file we've got some middleware added. This is the unprocessed proxy which I talked about our ERP C web request comes in and will get routed to our endpoint. Then the GOP see web middleware will run it. We'll make a couple of modifications to it.

C

It will pass it on to our GRDC service, which will execute it. It will return my response, which will map it back into G PC web and return it back to the client. So if we run that right now, we can see it running into end. So this is the very, very basic website designed designed by me, and we can say hello to myself, clicks in unary and that's gone back to the server and has been sent using a RPC web.

C

If we look at the network tab, we can see, we've got our say hello method, so that sent to a standard, G RPC URL.

C

So it's not a friendly rest URL as a standard conventions based gob, see URL, and if we look at our headers, we've got a content, type of GRB, see web and our request message as some base64 content and our response message as some basics before protobuf content, and if we look at the server it's wrong one. If we look at the server we can see, the server got a request coming into that G RPC URL, with this G RPC web content type.

C

So that's all it takes to implement G RPC web on the server the client. If you're curious, is just a standard web page we're referencing this javascript file created by node, and this is just some basic basic JavaScript. The only thing of interest here is: we've got our gr PC web client. This has been generated from that proto file, so we're including a couple of files up here, which we can see reference here.

C

These have been generated from the proto file and, if you're curious about how to do that, the sample it's available on the GRP see Donnie repo. It has instructions about the command you run to to generate these files. So it's gr, PC Weber's, it's not very complicated. The next thing I'm going to talk about is G RPC, HTTP API. So this is a new experiment. I blogged about I, think last week, beginning of last week, and the goal of this is providing restful. Api is for G RPC with almost zero effort, so rests and Jason.

C

They still have an important place in modern apps. So we talked about the ease of getting started with them. It doesn't require any contract file. There's no cogeneration involved for all text-based. So if you want to reach the widest audience, you possibly can rest and Jason are probably still the way to go.

C

But if you want to have gr, BC and rest services- and you want to have both building both as unwanted overhead, like you you're building your services, twice, Oh gob see HTTP API the goal of this as bride rest endpoints for G RPC services automatically for you. So this is a powerful idea. It isn't a new idea. There's an existing piece of technology called Chi.

C

Opc gateway is like, like a RPC web has implemented on a proxy and boy Jia, PC gateway will take and coming rest requests and will turn them into GI, PC and forth them onto your G RPC services, so G RPC gateway has existed for a while. It's it's widely used its popular Google cloud platform. All their services are built initially with G RBC and then the rest implementation, as provided via the OPC gateway.

C

The difference worth e IPC HTTP api is, it's hosted directly out of a speed on it, cause someone's eye what we've done worth GRP c-webb, it's important to notice very experimental whether we invest more time on it depends on user feedback and the pre-release package is available now. So how does it work? How do we turn G RPC calls and to restful calls? So the way it's done is via the contract file, so protobuf contracts they support, annotations and thus goggle dot, API dot, HTTP annotation. We can see that and strikes well.

C

It doesn't instruct the contract file to do anything. It exists in the contract file and then the framework is able to read this information and use it to transform an incoming rest call and G RPC. So we can see this first example with our say: hello call we're mapping it to a get request, so we supply the URL. You can kind of think of this like attribute routing and NBC. We define the attribute.

C

We define the route with this annotation and, in this example, we're mapping a URL segment to a name property on the incoming object. So this hello request which exists on say hello. It has a name property and this URL will be mapped directly to it. So when we pass in world the name property on how a request will be world, the second example uses a post.

C

So in this case we're specifying we want post and we're specifying the URL as v1 greeter and we're also specifying how the body maps to the incoming request message in this case, because we've specified star we've just said that the entire request body, Jason, Maps, hello, requests from and protobuf actually has a no one convention for converting to and from Jason. So this jason would match the convene that protobuf expects and it will just automatically turn the incoming JSON into this message.

C

So if we take a look at the demo of that.

C

This thing's, a look at is that proto file. We have the annotation here and we've got our hollow request, object and hello request. Has that name, and that name is what we will get maps to from the incoming route value. So world would end up as well down here and then a hollow request from the Jason which comes in would map up to our property names of name and from and the response message. In this case hello request.

C

This will get turned into Jason, so we would come back with JSON object with the name property, so I'll run it now before we take a look at the output just to show you how to set it up and our in our startup file. We register some services, so we've got our ad g RPC to register gr bc services and we have add a RPC HTTP api, and that is a it's. The only thing you need to do other than annotate these files.

C

So looking at our result, this is just a website. I made slightly better design. We can type in a name over here. I'll. Take a look at the network. Tab and we make it call.

C

So a URL was v1 greeter test and our response was some standard JSON and that Maps up with what we expected down here. So if we set a breakpoint in our application just to prove I'm not lying. So this is our standard. G RPC service implementation put a put a breakpoint and we'll run this, and our request has come in and you can see that the name of testers has entered our ERP C service. So that's a pretty simple way of automatically getting HTTP endpoints for your TR PC services for free and I.

A

Have you know well hit one thing you're showing here, that's really, nice is a downside of G RPC is that you don't have really easy test clients, and this is really cool that you can do you know you can use browser tools. You've got all that visibility into what's going on, I did have one question is how easy is it then, like? Let's say, I wanted to develop. Take advantage of all this simplicity as I'm developing and then switch to G RPC server or you know, switch from G our PC web reliance later.

A

Is that that easily possible? Is that a dumb question.

C

It is very easy, so it depends whoa and you would choose G RPC web because you don't have HTTP 2 available from end to end. So if you're calling from a browser, I, don't think HTTP 2 support is coming from a browser any time soon but say, for example, if you're calling from xamarin and you're using the.net client.

C

It is very easy to just turn off your PC web when xamarin add support for HB, 2 or unity, because the server will always be sending both G IP, C and G RPC web and supports both of them side by side. So when you change your clients, the server will consent continue to just work. Ok,.

A

And then had a few questions on blazer support, blazer client, blazer server.

A

I, don't know just and I don't know if this was already covered, that this is earlier in the chat given it supports blazer, client and or server side.

C

Yes, so server side is always supported with full G RPC, because you're running inside dotnet and because you're running inside well you're running inside Donnie at core and because you're running inside donut core you have access to and it should be client which supports, which supports HTTP two, if you're running in webassembly webassembly has the same constraints as javascript in a browser, so you're limited to HTTP 1.1 from for HTTP calls, so you need to use GRDC web.

C

Then, okay, right, I've, I, have one more one more part of my demo and that is swagger support. So this is something I've just been working on yesterday in this morning, so swagger I'm sure we're all familiar with it. It's basically a contract for your for your services for your restful services, so this is generated from our G RPC. So we can see our our services that we've defined that get serviced and we have our parameters. It's got a name and then our response. It's probably a bit easier to view it view it here.

C

So we can see. We've got our name parameter and then looking down at our response, it returns a message.

C

So if we click try it out, you can say hello: don't it stand up run execute my breakpoint gets hurt because I still have that set, and then that will return back to our client and I'll say hello, don't it stand up and in a bling that is quite simple: it's just using swashbuckle, so in this secret region, which you may or may not have noticed, I am registering this extra service at G, RPC, swagger and then calling add swagger generation and down here I'm calling use, swagger and use swagger UI and the swagger integration.

C

It's just that the way it works is usually swagger integrates worth asp.net core NBC, and it knows all about controllers and actions and the objects they return and all transform those and to schemers.

C

This extension we've added here means that swashbuckle will understand, see RPC services erp see HTTP api services, so it will lock into this proto bar file and be able to see that these services have the necessary annotation and it will use these annotations to generate the swagger. So that link you had earlier and the and the pre-show when you're going through Community Links, the blog post, talking about customizing swashbuckle to return schemas I use many of those techniques to implement this.

C

Ok and ms a-- and I will handle it off to syrup.

B

Just because you showed two different things: they have two different levels of support right once an experiment in one we're going to be shipping non preview packages, they'll be good to just go over there. Yeah.

C

So GI PC web started off as an experiment. We're planning to move it out of an experimental stairs, so I've got a one. One final slide to sort of recap what we've shown so I've shown a couple of things. If you want g RPC and you it should be to end-to-end, you would just use standard GRP see if you want gr, b c and h. Gb to is not supported.

C

End-To-End you'd use gr pc web and if you want g a b c- and you still want to have HTTP api is okay rest, then you would add on CIBC, HTTP API, so gr PC web started off as an experiment. It's still an experiment, we're planning to make it a supported product gr, PC, web HTTP. Api is very experimental.

C

I, don't know if we'll invest, effort into it into making it a fully supported product right now. It really depends upon people showing interest in it and the community starting to use it, but the demo that's out there it's basic, but it, but it is functional. So you're certainly welcome to try it out and use it, but just keep in mind that it's not officially supported. Oh.

A

All right, I guess it's your turn. So.

B

Showing off the new and the fancy stuff I know one of the questions we keep getting hammered about online is. Can you please let me host your PC on my server while we're not quite there. Yet we've done at least part of the work in HDPE sis right, so we God made changes to the HTTP driver and the Windows kernel. That's where is used? That's that's. What DHCP server uses so I can now show you I taught you it's a boring demo, but I know it's gonna have a lot of people excited?

B

Did you go back? This is my default file. New Jer, PC, yeah I, haven't done anything else to it, but now I'm going to go ahead and just add UHT since before I got here, I should do this. I do not know. This is something on an experimental build of Windows. You can see that this is still very, very new, so I, don't think anyone publicly can't ride yet, but I want to show it as hey guys were listening to what people are complaining about, and we also want to get this working.

B

And now, with that said, I'm able to hop over I'll show you one more team for folks are familiar with Nana six. They know that you know this, which we used to create our bindings for HDPE six, so I've gone ahead and created a HCPCS binding on port 5000, one with my certificate there, the docs on how to do this, and with that being said now, I'm able to actually put on my steps on on the right I'm running up a web application.

B

It doesn't look very different because it's really not the only difference is accusing a different server and if I pop over to my client can I call me sugar. No thanks here it looks exactly as you would I have like a hard-coded in request there and now I'm able to go ahead and run over here and we're making a juror PC call. So this is step one out of two to get this working on is this is just showing you this as an acknowledgment of hey, we're listening to what people want and we're getting there.

B

You know. Hopefully this gets people excited it in you know, I am supported right down the border and.

A

That's part also of a sure, support as well right. That's all the same thing. It's.

B

It's I mean you know: you're gonna, like clear all the blockers once we get the app or we can run our dash services, it's we're aware of it and we're working on it both and.

B

I want to point out, though, the support isn't a newer version of Windows. This isn't a special man build we've, actually gone ahead and I'll Danny added board for supporting SVP Sisera verse. If you want to do and use the punch stuff, you won't ready to do for chatting and stuff. As soon as the new windows drops, you can do it. This is fine that mid-fight meet you too and I think it's been there since maybe warms up support.

A

So new windows, meaning like would that be an insider preview or something.

B

Yes, so, unfortunately, I don't know which, which bronzer, which windows inside the name it would be on, but I like I, said I was running a nightly build of Windows. It's something that you know as soon as we have information we'll share it with people. But for now this is more. The teaser boom.

A

That is good stuff awesome.

A

Go ahead back I'm.

B

More demo that I wanted to show people. This is just a shout out, Bovie the fine folks on our team who are working on project I dyes, doing for developing and deploying micro services with neck. It's supported.

B

It has a bunch of features, but one of the things it does is make your inner loop experience extremely productive and, with that I just have together a simple download that builds upon the you know the work that folks on the diet team are doing, and you know why did your PC just show that you're busy Derby season special, all the darknet abnormal stuff works on it? So if I show you my project, I have a solution here and it comprises a laser front end and a JRPG service at it.

B

Let me go ahead and run this first and then come back and talk to it. So I'm able to just died on- and this is going ahead, building my projects and then there's nothing special in my brother. But how back to my search? Really I don't have any doctor files, I, don't know I, don't have any artifacts that allow me to do, but under that wait, I ate noodles with orchestration.

B

The only thing I have to do is often to thee you, the opinionated with Titus, is coming so I'm gonna show you this thing so I line it up.

B

You know again, you are I met her, and so what died does is it's aware of all the services in your solution file and when it runs that it basically inject services copy via environment variables and because we have an environment variable configuration provided by default, able to pick it up and it injects both the HTTP version and the HTTP version of the surface so for Joe PC, since I need the HTTP if CPS version since we're doing it to be to over Oh HTTP to over HCPs. That's why I've gone ahead?

B

Pull the right values out of configuration and I have a knife. This one helper method forget URI and with that done all I've gone ahead and done in my front-end application. Is your PC client active support? So this is in my Blizzard application and once I've done, that I'll be able to resolve the URI for my service di configuration and then, if I go so you might win this component. All the dummies have injected a greeter client into my page and I have like this input that is on here.

B

I have an input that I render and when you press this button it makes the user a dirty scroll with that self and hot pan over it looks like time is running and it's posted its dashboard on for a thousand. We grab the browser window over so like I said I'm, not too much into ties with. The cool thing is, if you go to run multiple services and it's orchestrating it for you, I think click do my logs that shouldn't be surprising as well as plug into here.

B

I see metrics emitted by my application, both my front end in my back end and for the neat bit now my laser front end was the services gonna be able to discover my hair PC Batman, so I go over here right. ah It's! The dashboard has been populated with the addresses of these symbols in listening on they'll, be able to go over here and say: I say that stand up I'm going to go ahead and I get back to look at stand up. If I jump back over to the core, you can see.

B

There's a compelling of this. You know around the default circles and again I get back a message from there. So it's it's for me. At least this was a you know, a really productive inner loop experience like making it easy for me to it will develop and use all the fine features and types I just wanted to show it off. People are playing with die. They should definitely use your pieces on the our model itself and provide feedback both the US and the typing. So we can make this a better experience.

B

A

Cool I went through their their tutorials I, really like their tutorials and, and they have one hooking up to a Redis client, be interesting to add on to that with gr PC as well. You know, basically, to show kind of what you just showed and I was surprised how easy it was. Their sample also uses a Redis client that pulls from the environment configuration and it just kind of magically works, and it's like you're saying it really simplifies that an innard lube I.

B

Mean and excuse to get more juror piece in front of people.

A

Nice, so the main thing that where you showed the configuration, that's at the bottom of your startup right, yeah.

B

Just the one thing that if you do look to the dioxin that dippers a little bit anything that Doc's use the HTTP version of the services services, sorry, but they also inject the HTTP version, I've actually gone service, name HTTP and then like the zone, both the host name and the port. This is the operative thing: okay,.

A

All right, so as far as demos and things that you've shown is there, where are some places where people can go to to find more of this or there do you have any of these demos posted yet or I.

B

Think that's something we can do after the fact. As for dye, the demos are sorry. The dye dachshund, the dye dorri live on the github. Slash net slash die as for I, think James's demo and blog post I think we can go ahead and actually include it in the show notes John, if it's not too late them, edit. That yep.

A

Yeah be happy to every.

C

Everything I showed is already on on github, apart from the swagger changes, but I'll probably push those in a day or two. Okay, I'd really recommend anyone who wants to learn about geo PC check out the examples and the GRP see John at Revo. There is about a dozen and it shows simple examples like just getting started, a basic requests and response.

C

You know recall streaming and then slowly works its way up to showing you how to do authentication how to do Diagnostics use interceptors for error handling using the client factory G RPC web in a in a browser, G RPC web using blazer pretty much every example you can think of as there at the moment, and that list is steadily growing. Then.

A

You share your screen, real, quick and just point us to that. Just for people watching you I'm.

C

Sure game a give me a moment.

A

I'll put that in the in the show, links to about.

C

Okay Q, can you see my screen yeah yeah, okay, so the GOP CG, obviously donut repo. You can see it up here and then just sitting under examples. There are all all these all these examples. Each one ends with our because I'm obsessive-compulsive, like that and they're, not just examples. I have I took a little time to write about what each one does, because seeing a whole bunch of examples feels overwhelming so each example talks about this is what it does, and this is what it shows off.

C

So the first one shows off how to make a unary call how to do service streaming and how to cancel that call and then slowly work its way down to become more and more advanced. So the browser example I showed that is gr PC web. Is this one so at showing er PC web in the browser configuring Donaire core to support er PC web and showing how to call those services from a browser are.

A

There, any you know like sometimes getting started, doing something it's nice to call like for rest. I know I like to call like an open rest. Endpoint such as like the github, you know, rest client or you know, is: are there any GPG RPC servers, you'd wreck that are open, that I can test against.

C

I, don't know I, don't I, don't think so. Like I talked about the Google cloud platform they're all based on, they all have G RPC implementations, but I, don't believe those are open program that involves giving Google your credit card right.

A

Okay and then one other question I had is like as you're showing this get a gr PC org. There are other gr PC like it's available on other platforms and frameworks. It's does that is that pretty straightforward I mean it's an open. It's a it's a specification, so it should be transparent, calling into falling between different frameworks or platforms. You shouldn't really even notice a difference right.

C

Sharyn, all all gr, pc implementations are compatible with each other. There's a comprehensive interrupt suite of tests and those tests are run every every single commit. So every commit every change to May made to any of the GRDC implementations that will rerun against every other implementation, so ensure compatibility.

B

We have pretty good integration for design time bill like ms build integration for some of the other language stacks. The code generation is not so transparent to you and you might be doing a little pot marking and getting the right code generators to work before you can actually get writing code. Okay, yeah.

C

I mentioned that, if you look in the scripts directory of the blazer sample of the browser, sample, I talked about how you go about generating these JavaScript files from the contract, and it involves downloading a an executable and, in an extension to be executable, and then you need to muck around with paths and getting everything. Outputting am I right location, one of the nice things about what we've got with Don. It is msbuild really just automates. All of this, for you.

A

Nice well all right, well, I've already added that to the show notes and it's probably a good place- to wrap up huh yep all right. Well, stop sharing your screen just for a second! So we can wave goodbye and and.

A

That was a great time for me to lose audio. Wonderful, alright! Well, thanks a lot. This was great, so uh and I guess we'll we'll. As you know, new things happen. Let us know when it's time for you to come back and give us another update. Sure.

C

A

Right thanks a bunch.