I want to log all the requests my application makes. The application makes several call like this: val client: Client = org.http4s.client.blaze.SimpleHttp1Client(...) client.fetch(Request(method =...

I'm learning the concept of F[_] as a constructor for other types, but how do you pronounce this to another human or say it in your head (for us internal monologue thinkers). Similar to how x =>...

So I'm no swagger expert, but all systems using swagger require you to have the swagger specification in JSON or YAML defining all endpoints (and such) of your API. My question is: Are there know ...

I trying to create blaze client with limited number of threads like this: object ReactiveCats extends IOApp { private val PORT = 8083 private val DELAY_SERVICE_URL = "http://localhost:8080&q...

Whenever I hit unknown route in my http4s application it returns 404 error page with Content-Type: text/plain and body: Not found How can I force it to always return body as JSON with Content...

I'm using http4s BlazeServer 0.21, how can I graceful shutdown? I want to reject all upcoming requests, and keep process unfinished requests and response back, within a hard shutdown time. I tried...

The idea is to be able to unit test websocket endpoints on a router service. Any other kind of endpoint is fairly easy to test with a Request, but I can't figure out a way of easily testing websock...

I'm trying to define HttpService that receives json and parses it to case class with json4s library: import org.http4s._ import org.http4s.dsl._ import org.json4s._ import org.json4s.native.JsonMe...

I have created two Http4s routes: class FirstRoutes[F[_] : Async](service: FirstService[F]) extends Http4sDsl[F] { def routes: HttpRoutes[F] = HttpRoutes.of[F] { //... some code } } class Se...

Not so long time ago I switched from akka-http to http4s. One of the basic things which I wanted to do correctly — JSON handling, in particular sending a JSON response. I decided to use http4s wit...

This tut shows how to create an http4s Request: https://http4s.org/v0.18/dsl/#testing-the-service I would like to change this request to a POST method and add a literal json body using circe. I tr...

I have a http4s project which uses ciris for configuration management. The project is in github here. libraryDependencies ++= Seq( "is.cir" %% "ciris-cats", "is.cir" %% "ciris-cats-effect", "i...

Extending StreamApp asks you to provide the stream def. It has a requestShutdown parameter. def stream(args: List[String], requestShutdown: F[Unit]): Stream[F, ExitCode] I provide the implementa...

I have a request that is talking to a backend db that takes time to respond. And the http4s is throwing request timeout. I wanted to know if there is a property to increase the request timeout? Th...

I am trying to use http4s, circe and http4s-circe. Below I am trying to use the auto derivation feature of circe. import org.http4s.client.blaze.SimpleHttp1Client import org.http4s.Status.Respon...