@Razi Kheir np. have a look here and just yell if you need any more help. 🙃 https://www.http4k.org/guide/modules/clients/

David is there an option for the lenses to have optional variables inside of them? or is the data class reflected entirely only? Also, I noticed that the variable names eg “val user_name: String” will have a field “user_name” of type String. What if I wanted a variable called “user::name” its not possible to call the variable by that, is there a way around that kind of thing?

David I noticed that when I define a contract, I use route and bindContract Method.GET to { request -> Response}. So it seems I can only bind the POST method to a synchronous method.. But in my case I get a request, I go to another backend asynchronously and only when I get a response from the other backend then have a callback. Is there anything I can do to go around this? Sorry for bothering you so much! and really thank you for everything!

so i’m trying to upgrade to 3.146.0 to get that new OpenAPI goodness, but i’m getting weird stack traces anytime i try to access the generated swagger:

@Razi Kheir qq - does it work with a map instead of an object ?

Hi - does anyone know how to set the basePath value in either OpenApi2 or OpenApi3? Without this the links in our swagger documentation are unable to be executed. We are currently using http4k v. 3.154.0. thanks.

And you still also have to do things like bind the drive mapping in the docker file, and agree on a standard place to read the properties from. ... It's probably more trouble than its worth to do it with the props file tbh

Hey david, letting you know of a possible bug (possibly minor): In gradle under dependencies if I have both: compile group: “org.http4k”, name: “http4k-server-netty”, version: http4kVersion and compile group: “org.http4k”, name: “http4k-server-jetty”, version: http4kVersion The generated jar file is broken, cannot find main function. I didn’t really need both, I was using only one, but took me a few hours to find out why my jar is broken since everything else was configured correctly.

@Razi Kheir FromResource() will load from the classpath and not from a file on disk

Hey I was wondering why http4k Request is just an inteface that uses invokes and creates data classes instead if having an implementation of an interface too? I mean if I want to create a custom request with very few changes I still have to override everything on the interface and create them myself :X

Hi - is there a way to override the body lens serialisation setting to not write empty lists as nulls?

Nulls.AS_EMPTY

@Uberto Barbini one way to work around this would be to start two servers and bind one of them to 127.0.0.1 and put all lf the private endpoints there

Hey for some reason using:

val filesystem: Environment = Environment.from(File("test.yml"))
var testString
var testStringLens: BiDiLens<Environment, String?> = EnvironmentKey.string().optional("TESTKEY")
testString = environment[testStringLens]

Only returns the string up to the first comma. Example: (yml) TESTKEY: “test1 , test2” Example: (properties) TESTKEY= “test1, test2" Will only return test1 as the string. How do I solve this? do I need to escape the string somehow? I’m trying to actually read a json from a file under a key.

Hello 👋, I am looking into the contract spec and I was wondering if there is a way to specify the min/max length of a string parameter field using the contracts? https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md#items-object-examples

For those of you into this kind of thing, Round 18 of the techempower benchmarks is out. No big surprises - http4k still consistently performing well: https://www.techempower.com/benchmarks/#section=data-r18

Hey, again 🙂 I was wondering, does http4k support HTTP/2 by default?

Another question, in Http4k, it seems the Health object defines two default routes “/liveness” and “/readiness” while for example in kubernetes and some other places “/liveness” is actually referred to as “healthz”, I was wondering if this is normal. I wanted to put it under /healthz, but by default I have the /liveness doing the basic liveness check instead.

Hey I wonder if anyone is on-line to answer a quick question about the http4k contract library?

Another quick contracts question: is there a way to include the endpoint hosting the OpenAPI JSON in the OpenApi JSON as well?

An extrapolation of this into http4k could be a variant of the Client and Request that use an indirection of some sort instead of the explicit hostnames

@Ricardo nope. I can just release it if you want. The only thing it hasn't got at the moment is the "include the docs route" PR.

@DALDEI Mainly there should be no problem, but there are a couple of things to consider: 1. You might want to plug in one of the async supporting HTTP clients instead of the blocking ones - the API here is callback based. 2. Anything that relies on threads to propagate (ZipkinTraces mainly) will also require manual transfer between Coroutine contexts. Resilience4j support will be compromised because that is also thread-based. For any of this stuff, if you could feed back any utility code for acheiving the above (even via just a Gist) that would be awesome, as these are a couple of the currently untackled items remaining on the Coroutine support work.

Any suggestions on how to enforce a maximum duration on an incoming connection? ie. I want to issue a

Connection: close

after a connection has been used for over 1 minute.

Is there a way to have one endpoint

/api

that you can

POST

to and the handler switches behavior based on the ContentType of the request? I assume I’d do this with lenses, but I can’t see a way to have two different handlers. It looks like I’d have to use one.

Having a problem understanding Body on the server side. Im using request.body.stream to feed to existing java code during a POST usually it works perfectliy but sometimes (consistantly) I get a EOF on the stream immediately. This makes sense if the stream was being read prior -- but it wasnt by me -- The comment to StreamBody is 'scary' 🙂 but I cant find a comment on how to avoid a SteamBody -- as far as I can tell debugging , the body is already a StreamBody by the time its routed to the handler -- Still a mystery why it works sometimes and not others. regardless - if I wanted to avoid the problem -- how ?? Therese some places in the source where its tested isAvailble() and conditionally uses stream or stringBody() -- can I just use stringBody() always ?

FYI: changing to stringBody() where I was using stream 'worked' fine -- Suggest some additions to the docs in this area, its non-obvious I still dont fully understand which functions are for creating a body and which are for consuming it -- the use of invoke() makes for concise code, but difficult to know what its doing or when to use what.

If I’m writing an HTTP4K route/handler that will return a file (CSV in this case), how would I specify that? Which page of the docs would have that info?

So, I have an HTTP4K API that was working, and then I added some new routes. As far as I can tell, they're all correctly written. They compile. but when I try to hit them, I get NPEs:

@Nezteb glad that you’re not getting the NPE, but TBH not sure what we did to fix it!

Opened a new PR for Google Cloud Endpoints OAuth2 support, please let me know if it is OK: https://github.com/http4k/http4k/pull/274