ktor | quickly creating connected applications in Kotlin | HTTP library

 by   ktorio Kotlin Version: 2.3.7 License: Apache-2.0

kandi X-RAY | ktor Summary

kandi X-RAY | ktor Summary

ktor is a Kotlin library typically used in Networking, HTTP, Framework applications. ktor has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

Ktor is an asynchronous framework for creating microservices, web applications and more. Written in Kotlin from the ground up.
Support
    Quality
      Security
        License
          Reuse

            kandi-support Support

              ktor has a medium active ecosystem.
              It has 11246 star(s) with 941 fork(s). There are 182 watchers for this library.
              There were 4 major release(s) in the last 6 months.
              There are 130 open issues and 1314 have been closed. On average issues are closed in 681 days. There are 38 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of ktor is 2.3.7

            kandi-Quality Quality

              ktor has no bugs reported.

            kandi-Security Security

              ktor has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              ktor is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              ktor releases are available to install and integrate.
              Installation instructions are not available. Examples and code snippets are available.

            Top functions reviewed by kandi - BETA

            kandi's functional review helps you automatically verify the functionalities of the libraries and avoid rework.
            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of ktor
            Get all kandi verified functions for this library.

            ktor Key Features

            No Key Features are available at this moment for ktor.

            ktor Examples and Code Snippets

            Ktor client unit test hangs / freezes within CoroutineScope.launch()
            Lines of Code : 25dot img1License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            object RequestService {
              private val requestContext = newSingleThreadContext("request")
              var testContext by AtomicReference(null)
            
              fun makeRequest(block : () -> Unit) {
                CoroutineScope.launch(testContext ?: requestContext) {
                
            How to censor/hide a HOCON value from appearing in Ktor logs
            Lines of Code : 17dot img2License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            ktor {
                deployment {
                    port = 8085
                    port = ${?PORT}
                }
            
                security {
                    databaseUrl = ${?DATABASE_URL}
                    databaseUser = ${?DATABASE_USER}
                    databasePassword = ${?DATABASE_PASSWORD}
                }
            
                applicati

            Community Discussions

            QUESTION

            What is a .api file in the context of Java or Kotlin
            Asked 2022-Mar-09 at 15:02

            I have been looking at the Ktor-client source code on github trying to understand it before making contributions when I came across this file. I see java syntax but I do not understand why it has the extension (.api), plus what it is used for. Any answers of ref links will be appreciated.

            ...

            ANSWER

            Answered 2022-Mar-09 at 15:02

            It is because of the following line in Gradle configuration https://github.com/ktorio/ktor/blob/290cd60fc1ee4c78ae84fcba4c76d590ab0af18f/gradle/compatibility.gradle#L1

            Quoting from README of Binary compatibility validator on GitHub

            The tool allows to dump binary API of a Kotlin library that is public in sense of Kotlin visibilities and ensures that the public binary API wasn't changed in a way that make this change binary incompatible.

            You can read more about this at https://github.com/Kotlin/binary-compatibility-validator.

            Source https://stackoverflow.com/questions/71409463

            QUESTION

            How can we handle api response in both platform in ios and android in kotlin mutlplatform?
            Asked 2022-Mar-03 at 11:59

            Hey I am new in the world of Kotlin Multiplatform mobile. I have experience in development of android field. I am trying to connect Android application and Ios application. I searched and see Ktor is the way to fetch data from server. In android we use Kotlin Sealed Classes for Handling API Responses example in your application and in ios side team use Understanding Swift closures and asynchronous request functions similar to these. I am little bit confused, How can I use this way in common module to use both platform because both platform have Interceptor and many more things. Do I need to write everything from scratch? or Is there any way we can use existing way. My both platforms application is huge project. I don't won't to replace the code. I want to start new api call throught KMM using Ktor. Any suggestion or project would be helpful for me. Thanks

            ...

            ANSWER

            Answered 2022-Mar-01 at 14:42

            If you want to use old Android Code into Kotlin-Multiplatofrm Project you need to do some steps

            First Step : you should separate your code into business layer and presentation layer you can know about it by reading clean architecture Android

            Second Step : we will put business layer into Shared Module then we will put presentation layer into ANDROID APP

            Third Step : you should replace Retrofit Code with Ktor Code

            Fourth Step : You should replace Room Code with SqlDlight Code

            fifth Step : You Should Write your view in presentation layer with Compose not Xml

            then application will be ready to use his business logic into ios

            sixth Step : then you can write your swift code into IOS APP

            you can look at this code this is not complete code but it will make it clear to you haw you can use my Kmm Repo at Github

            note :

            Presentation layer contain view , viewmodel and any Platform dependent tools like workmanger

            business layer contain network and caching code like KTOR , SQLDELIGHT and any logic that may be shared between Android and Ios

            Source https://stackoverflow.com/questions/71308439

            QUESTION

            Initialize variables with ".()" expression in Kotlin
            Asked 2022-Mar-01 at 15:20

            I'm using Ktor to make websocket requests.
            The method "websocket(...)" I use takes two lambda expressions.

            So as I only can call one with curly brackets I have to give the other one via a variable. So I tried this:

            ...

            ANSWER

            Answered 2022-Feb-27 at 21:26

            As you said yourself, you need to pass two lambdas. You can do it either directly:

            Source https://stackoverflow.com/questions/71288400

            QUESTION

            How to prevent Ktor Client from encoding url parameters?
            Asked 2022-Feb-17 at 13:51

            I am trying to create an android app with kotlin, this app need to have a mini download manager as I will need to download files from 100MB to 8GB and user can pause and resume download later when the server supports the pause, searching I found the Ktor library and reading the documentation plus some videos on youtube, I managed to write a base code where I could download the files and make the process of stopping the download and keep going all right when one of mine tests gave error there are files whose url pattern is: http://server.com/files?file=/10/55/file.zip

            The problem is that I put this link, but Ktor converts to http://server.com/files?file=%2F10%2F55%2Ffile.zip this generate an error response on the server, as I don't have access to the server to change this rule I need to send the right url without encoding. Does anyone know how to do this? Prevent Ktor from doing a URL_encode in the url parameters, I couldn't find anything in the documentation

            My code is this:

            ktor-client version 1.6.7

            ...

            ANSWER

            Answered 2022-Feb-16 at 06:58

            You can disable query parameters encoding by assigning the UrlEncodingOption.NO_ENCODING value to the urlEncodingOption property of the ParametersBuilder. Here is an example:

            Source https://stackoverflow.com/questions/71130590

            QUESTION

            How to create an HttpResponse object with dummy values in ktor Kotlin?
            Asked 2022-Feb-08 at 08:55

            I am using ktor for developing a microservice in Kotlin. For testing a method, I need to create a dummy HttpResponse (io.ktor.client.statement.HttpResponse to be specific) object with status = 200 and body = some json data.
            Any idea how I can create it?

            ...

            ANSWER

            Answered 2022-Feb-08 at 08:55

            You can use mockk or a similar kind of library to mock an HttpResponse. Unfortunately, this is complicated because HttpRequest, HttpResponse, and HttpClient objects are tightly coupled with the HttpClientCall. Here is an example of how you can do that:

            Source https://stackoverflow.com/questions/71030142

            QUESTION

            Ktor needs 1 hour(forever) to boot up
            Asked 2022-Jan-28 at 16:23

            I have a ktor app. I works fine when I run it in development mode. I package it in a docker image by copying over what the gradle application plugin provided. That also works fine on my local machine 8 cores. But now the strange part. When I do exactly the same thing on a rented V-Server also running Ubuntu-20.04 like my local system, ktor is incredible slow.

            ...

            ANSWER

            Answered 2021-Aug-31 at 20:52

            docker-compose being slow and my program not starting seemed to be due to insufficient(not good enough) input to /dev/urandom. Installing https://github.com/smuellerDD/jitterentropy-rngd resolved the problem.

            Source https://stackoverflow.com/questions/68905564

            QUESTION

            How to use blocking (I/O bound) APIs within Kotlin coroutines?
            Asked 2022-Jan-14 at 01:13

            I'm writing a Kotlin server using Ktor - where my request handlers are written using Kotlin coroutines.

            My understanding is each request handler is run on Ktor's thread pool, which contains far fewer threads than the traditional pool size of 1-thread-per-request server frameworks due to the lightweight/suspendable nature of coroutines. Great!

            The issue I have is that my application still needs to interact with some blocking resources (JDBC database connection pool), but my understanding is that if I merely call these blocking APIs directly from the request coroutine I will end up with liveness issues - as I can end up blocking all the threads used to handle my requests! Not great.

            Since I'm still relatively new to the world of Kotlin and coroutines, I'm wondering if anyone here can give me some tips on the best way to handle this situation.

            I've seen Dispatchers.IO referenced a few times elsewhere. Is that considered the best way to manage these blocking calls? Are there any good examples of this?

            The API I'm trying to use does allow for some asyncronicity by passing an Executor. Ideally, I could also wrap these calls in a convenient, idiomatic Kotlin API for suspending transactions.

            ...

            ANSWER

            Answered 2022-Jan-14 at 01:13

            You understand it all correctly. In most cases you should never block the thread when inside a coroutine. One exception is Dispatchers.IO mentioned by you. It is the standard way of handling blocking code and it is very easy to use:

            Source https://stackoverflow.com/questions/70704624

            QUESTION

            Kotlin Multiplatform. Cannot access class SqlDriver.Schema. Check your module classpath for missing or conflicting dependencies
            Asked 2021-Dec-22 at 16:45

            I am trying to build a KMP library targeting iOS, Android, JS(Browser), Mac, Windows and Linux. For now I am only using Ktor and SQLDelight as a dependency. But getting the following issue in nativeMain's actual implementation while creating driver for SQLDelight

            While the same code doesn't give any issue for iOS main which is also using the same NativeSqliteDriver (I need them separately since Ktor client for iOS and desktop platforms are separate). Following is my build.gradle.kts

            ...

            ANSWER

            Answered 2021-Dec-22 at 16:45

            So it seems the issue was somewhat due to same dependency being added to the build gradle twice and it's corresponding code being added twice as well. To solve the same I had to make a separate source set like the following

            Source https://stackoverflow.com/questions/70151701

            QUESTION

            Cannot find "Greeting" in scope
            Asked 2021-Dec-13 at 16:02

            I've build a KMM project in Android Studio but the ios app seems to not see the classes from the shared module. Initially it worked perfectly but now that I modified some classes in the shared module, the error appears.

            My project structure looks this way:

            As you can see there are some compilation errors in the Platform class but the android app is working fine. The error says "The feature "multi platform projects" is experimental and should be enabled explicitly".

            The ios app looks like this:

            Later Edit:

            So apparently I found that I encounter this errors when I add this dependencies in shared.build.gradle in the common source set:

            ...

            ANSWER

            Answered 2021-Dec-13 at 16:02

            You may have to cd iosApp && pod install the first time you build the iOS app.

            Source https://stackoverflow.com/questions/68621375

            QUESTION

            How to distribute a Kotlin CLI application?
            Asked 2021-Dec-02 at 22:07

            I've built a small bot in Kotlin.

            It's finished and I can run it from my developer tools. I am using the application plugin to attempt distribution but I keep failing.

            ./gradlew run runs the bot as expected.

            I was looking for something like ./gradlew installDist and then just running installationDir/bin/App (similar to Ktor apps) and running the app. But it just exits successfully with no output when I should see a lot of logging output.

            What am I doing wrong?

            ...

            ANSWER

            Answered 2021-Dec-02 at 22:07
            • Good news: The setup posted on my question works flawlessly.
            • Bad news: My code didn't.

            I had a file that didn't exist on the server and a part of the code was returning null so the app would quit without any output because it wouldn't do anything due to the file being non-existent.

            Source https://stackoverflow.com/questions/70130581

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install ktor

            You can download it from GitHub.

            Support

            Please visit ktor.io for Quick Start and detailed explanations of features, usage and machinery.
            Find more information at:

            Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items

            Find more libraries
            Install
            Maven
            Gradle
            CLONE
          • HTTPS

            https://github.com/ktorio/ktor.git

          • CLI

            gh repo clone ktorio/ktor

          • sshUrl

            git@github.com:ktorio/ktor.git

          • Stay Updated

            Subscribe to our newsletter for trending solutions and developer bootcamps

            Agree to Sign up and Terms & Conditions

            Share this Page

            share link