#01. Ping

Let's start with the smallest possible Telepact conversation.

#Start the demo server

In one terminal:

telepact demo-server --port 8000

#Call fn.ping_

In another terminal:

curl -s localhost:8000/api -d '[{}, {"fn.ping_": {}}]'

Response:

[{}, {"Ok_": {}}]

#The anatomy of a Telepact message

That request was a JSON array with exactly two elements:

[
  {},
  {"fn.ping_": {}}
]

• the first object is the header

• the second object is the body

And the response has the same shape:

[
  {},
  {"Ok_": {}}
]

So right away, Telepact gives us a steady mental model:

1. header object

2. body object

We'll keep using that same two-object envelope all the way through the tutorial.

Next: 02. Schema and fn.add