Vibe.d minimal installation

Vibe.d is an Asynchronous I/O web framework written in D programming language.

The usual way to start using Vibe.d web framework is by initializing the project with dub init -t vibe.d. Installing full Vibe.d library with all the sub-packages may not be useful for every project (For example, MongoDB and Redis sub-packages). In the blog post, we will understand how to use only the required sub-packages.

Initialize the new project and add vibe-http as the dependency.

$ cd helloweb
$ dub init
Success created empty project in /home/aravinda/sandbox/dlang_try/helloweb
Package successfully created in .
$ dub add vibe-http
Adding dependency vibe-http ~>1.1.0

Now import only the required modules and use it.

Example Hello world Vibe.d application:

import vibe.core.core;
import vibe.core.log;
import vibe.http.server;

void main()
{
    auto settings = new HTTPServerSettings;
    settings.port = 8080;
    settings.bindAddresses = ["::1", "127.0.0.1"];
    auto listener = listenHTTP(settings, &hello);
    scope (exit)
    {
        listener.stopListening();
    }

    logInfo("Please open http://127.0.0.1:8080/ in your browser.");
    runApplication();
}

void hello(HTTPServerRequest req, HTTPServerResponse res)
{
    res.writeBody("Hello, World!");
}

Start the web server by running the following commands (or by running dub build and then run ./helloweb).

$ dub run
    Pre-gen Running commands for openssl
    Starting Performing "debug" build using /usr/bin/dmd for x86_64.
  Up-to-date diet-ng 1.8.1: target for configuration [library] is up to date.
  Up-to-date taggedalgebraic 0.11.23: target for configuration [library] is up to date.
  Up-to-date eventcore 0.9.30: target for configuration [epoll] is up to date.
  Up-to-date stdx-allocator 2.77.5: target for configuration [library] is up to date.
  Up-to-date vibe-container 1.3.1: target for configuration [library] is up to date.
  Up-to-date vibe-core 2.8.4: target for configuration [epoll] is up to date.
  Up-to-date vibe-inet:textfilter 1.0.0: target for configuration [library] is up to date.
  Up-to-date vibe-serialization 1.0.3: target for configuration [library] is up to date.
  Up-to-date vibe-stream 1.1.0: target for configuration [library] is up to date.
  Up-to-date vibe-inet 1.0.0: target for configuration [library] is up to date.
  Up-to-date mir-linux-kernel 1.0.1: target for configuration [library] is up to date.
  Up-to-date vibe-inet:crypto 1.0.0: target for configuration [library] is up to date.
  Up-to-date vibe-stream:tls 1.1.0: target for configuration [openssl] is up to date.
  Up-to-date vibe-http 1.1.0: target for configuration [library] is up to date.
  Up-to-date helloweb ~master: target for configuration [application] is up to date.
    Finished To force a rebuild of up-to-date targets, run again with --force
     Running helloweb
[main(----) INF] Listening for requests on http://[::1]:8080/
[main(----) INF] Listening for requests on http://127.0.0.1:8080/
[main(----) INF] Please open http://127.0.0.1:8080/ in your browser.