In this article, we’re going to discuss how to use curl to interact with RESTful APIs. curl is a command-line utility that can be used to send requests to an API.
CURLOPTPOSTFIELDS as the name suggests, is for the body (payload) of a POST request. For GET requests, the payload is part of the URL in the form of a query string. In your case, you need to construct the URL with the arguments you need to send (if any), and remove the other options to cURL. Curl is commonly considered a non-interactive web browser. That means it's able to pull information from the internet and display it in your terminal or save it to a file. This is literally what web browsers, such as Firefox or Chromium, do except they render the information by default, while curl downloads and displays raw information. In reality, the curl command does much more and has the. The list of custom headers can be freed imediately after curleasysetopt(curl, CURLOPTHTTPHEADER, slist) or only after the curleasyperform has returned? See the HTTP custom header example1. How to do a post request with json HTTP body? Is something like this: char.postbody = jsondumps(json, 0); struct curlslist. The campus is bordered by Babcock Road, Merton Minter Boulevard and Floyd Curl, Louis Pasteur, and Medical Drive. From Interstate 10 Exit at Medical Drive and turn west on Medical. (From I-10 West, this is to the left.) Take Medical for 1.5 miles to Floyd Curl Drive, which is the second stoplight past Fredericksburg Road. Turn left onto Floyd Curl. Dec 18, 2019 When submitting data via POST, you’ll usually include a body as well which both tools are capable of. You can see below using the -request parameter for curl and the Method parameter with Invoke-RestMethod, you can specify the verb. For the body, you’ll use the -data parameter in curl and the Body parameter with Invoke-RestMethod.
API requests are made up of four different parts:
- The endpoint. This is the URL which we send requests to.
- The HTTP method. The action we want to perform. The most common methods are
GETPOSTPUTDELETEandPATCH - The headers. The headers which we want to send along with our request, e.g. authorization header.
- The body. The data we want to send to the api.
Curl Post Body Raw
curl Syntax
The syntax for the curl command is:
The options we will cover in this post are:
-Xor--request- HTTP method to be used-ior--include- Include the response headers-dor--data- The data to be sent to the API-Hor--header- Any additional headers to be sent
HTTP GET
The GET method is used to fetch a resource from a server. In curl, the GET method is the default method, so we don’t need to specify it.
Example:
GET With Query Parameters
We can also send query parameters along with the curl GET request.
Example:
HTTP POST
Curl Post Body Json Php
The POST method is used to create a resource on the server.
To send a curl POST request we use the option -X POST.
POST Form Data
Example:
By default, curl uses Content-Type: application/x-www-form-urlencoded as the Content-Type header, so we don’t need to specify it when sending form data.
POST JSON
To POST a JSON by curl we have to specify the Content-Type as application/json.
Example:
HTTP PUT
The PUT method is used to update or replace a resource on the server. It replaces all data of the specified resource with the supplied request data.
To send a curl PUT request we use the option -X PUT.
Example:
The above PUT request will replace our previously created post with “New post title” and “New post body”.
HTTP PATCH
The PATCH method is used to make partial updates to the resource on the server.
To send a curl PATCH request we use the option -X PATCH.
Example:
Notice how we are only sending the body with “Updated post content” as we are doing a partial update.
HTTP DELETE
The DELETE method is used to remove the specified resource from the server.
To send a curl DELETE request we use the option -X DELETE.
Authentication
Sometimes an API endpoint has restricted access and will only serve requests to authenticated and authorized users. For these requests, we have to provide an access token in the header of the request.
Curl Post Xml
To send a curl header, we use: -H option.
Curl Post Request Body
The following request sends POST request with a bearer token in the header:
Curl Post File
Conclusion
In this post we learned how to send HTTP requests (GET, POST, PUT, PATCH and DELETE) to an API using curl commands.