123 hello world

19.0.0 released Nov 08, 2023

123 hello world

This is a condensed version of Vely Hello World that you can run in minutes. No additional software needs to be installed. For more, see examples.

Step 1: Install Vely

First install Vely.

Step 2: Build it

Create Hello World source file (hello.vely) in a new directory; note it's all one bash command:

echo '#include "vely.h"

request-handler /hello
    out-header default
    @Hello World!
end-request-handler' > hello.vely

Create Hello World application:

sudo vf -i -u $(whoami) helloworld

Make Hello World application:

vv -q

Step 3: Run it

You can run Hello World both as a service and from command line:

As a service, first start your Hello World FastCGI application server:

vf helloworld

then connect to it:

export CONTENT_TYPE=
export CONTENT_LENGTH=
export REQUEST_METHOD=GET
export SCRIPT_NAME="/helloworld"
export PATH_INFO="/hello"
cgi-fcgi -connect /var/lib/vv/helloworld/sock/sock  /

From command line:

export CONTENT_TYPE=
export CONTENT_LENGTH=
export REQUEST_METHOD=GET
export SCRIPT_NAME="/helloworld"
export PATH_INFO="/hello"
/var/lib/vv/bld/helloworld/helloworld

Expected result

The end result looks like this (notice in bold the responses from your web application and the command line):

You have run Hello World with Vely, first by talking directly to a FastCGI server and then from command line. See FastCGI-command-line-client for a similar example that uses TCP sockets.