Postman is a tool that allows us to make requests to any Web address or endpoint.
Installation
We go to https://www.getpostman.com/
Register
Optionally we can register on the application, with the advantage of having all our data syncronized between all our devices.
Basic use
The basic use is very direct: to introduce in the upper bar (the one with the text “Enter request URL”) a URI (address with a resource) and click on “Send”.
That will send a request to that resource, that will give us one of several possible responses. Examples:
– If we make a request to a static Web page, it will return a HTTP file text. It can also return an image file.
– If we make a request to a dynamic Web page that waits for requests, it will return a dynamic message more or less readable.
Basic use examples
– If we use www.google.com, this will return (as a text file) the initial Web page of the search application.
– If we use https://postman-echo.com/time/
Advanced use
Además de peticiones básicas, es habitual hacer peticiones y enviar lo que se llama un “payload”, que es una carga que se recibirá en destino, mediante la pestaña Body. Para esto hay que usar un tipo de petición diferente a la de GET, que es la de POST. Cambiamos a este tipo de peticiones y se habilita la pestaña.
Apart from basic requests, it is common to make requests and send what is called a “payload”, that is an amount of data to be received in the destiny, through the Body tab. To do this it is needed to use a different request type than GET: the POST type. We change to this type and the Body tab is available.
Advanced use example
We change to the POST request type and use this URI: https://postman-echo.com/post.
In the Body tab we include these two variables: clave1 (valor1) y clave2 (valor2).
We click on Send and the application that is listening on the other side sends us (among other data) our two variables back:
{
"args": {},
"data": {},
"files": {},
"form": {
"clave1": "valor1",
"clave2": "valor2"
},
"headers": {
"host": "postman-echo.com",
"content-length": "242",
"accept": "*/*",
"accept-encoding": "gzip, deflate, br",
"accept-language": "en-US,en;q=0.9,it;q=0.8,es;q=0.7,ru;q=0.6,de;q=0.5",
"cache-control": "no-cache",
"content-type": "multipart/form-data; boundary=----WebKitFormBoundarymmryGRzmdkkgROOE",
"cookie": "sails.sid=s%3ARs8ZDlzTzcjsS3PsEqvHSUY9OcNRBh1N.4dk0AL9uBg7lGUlSWIUcyUZFgtLC8pMehFu7iaQZnC8",
"dnt": "1",
"origin": "chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop",
"postman-token": "d1438966-0e8d-1399-f8b5-50636850e887",
"user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/63.0.3239.84 Chrome/63.0.3239.84 Safari/537.36",
"x-forwarded-port": "443",
"x-forwarded-proto": "https"
},
"json": null,
"url": "https://postman-echo.com/post"
}
So, what do you think ?