Understand the difference between HTTP requests with curl and qt
When it comes to submitting HTTP requests, developers have different tools available to them. Two popular options are “curl” of the command line I QT (also known as Qtwebngine) to create websites. In this article, we will examine why you can feel a “poor HTTP request” with “QT”, but a successful request with “Curl”.
Problem with QT
QT is a powerful framework that allows programmers to create high performance internet applications using the QT Webngine engine. Although it is an excellent choice to create complex online applications, it can have some restrictions on the creation of simple HTTP requests.
Here are some reasons why you can arise with problems with “QT”:
* Lack of a client built HTTP : Unlike Cur, who is a complete http client, QT does not have a built customer. This means that you should use the Javascript QT Webngine interface, which can be heavy.
* Limited error service : Although `qt provides a good error service, it is not as solid as “curl”. If an error comes when submitting a request, you can not get the same level of control on the answer as in “curl”.
* Without stamping or persistence of the responses : By default, QT does not allow to stamp or keep answers, which can cause problems while working with large sets of data or often available resources.
Good news: Use of curl for HTTP requests
Let’s talk about the reason why making simple HTTP requirements with “Curl” is a better choice. Here are some reasons:
* Built -in Customer HTTP : De Cur ', you will receive a fully distinguished HTTP customer which offers a solid error and buffer possibilities.
* Easy to use :Cura simple syntax, which facilitates work with HTTP requests even for beginners.
* Flexibility : You can use various options, such as headers, request parameters and "curl" files, which is useful when working with HTTP requests.
Example of use of: submit an HTTP request with curl
Here is an example of how you can submit a simple HTTP request to Binance using "curl":
Bash
Define the API key
API_KEY =
Make the job request at the Binance API interface
curl -x post \
" \
-H "Content-type: application / json" \
-H "X-MBX-Adepikey: $ API_KEY"
` ‘
In this example, we apply for simple GET to recover the current Bitcoin price on Binance. We also define our API key and use the correct header names for the “curl” command.
Application
While QT provides useful functions when it comes to creating websites, its HTTP customer is not as solid as “curl”. In the case of simple requests, HTTP “Curl” is a better choice due to the ease of use, flexibility and the error service built. In this article, we examined why you can encounter problems with “QT”, but you made a successful request with “Curl”. We hope this will help you make conscious decisions when choosing the best tool to create websites!
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