Requests

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Requests#

requests is a Python library that allows you to send http requests. Read more about this library in the official documentation.

import docker
import requests

docker_client = docker.from_env()

Default headers#

There are some headers that the requests library generates itself - even if you’ve specified empty headers, there will be some headers in the request.

The following example shows that requests with headers specified as empty lead to requests that still have some headers.

In the following cell we create container of the httpbin which allows to check headers of the requests.

container = docker_client.containers.run(
    image="kennethreitz/httpbin",
    ports={80: 80},
    detach=True,
    remove=True
)

By sending the request to the httpbin we created earlier, in the /headers path, we can check the headers of the request - they’ll be returned as a response.

prepared_request = requests.Request(
    'GET', 
    'http://localhost:80/headers', 
    headers={}
).prepare()

session = requests.Session()
response = session.send(prepared_request)

print(response.content.decode("utf-8"))

{
  "headers": {
    "Accept-Encoding": "identity", 
    "Host": "localhost", 
    "User-Agent": "python-urllib3/1.26.5"
  }
}

Even though we explicitly specified headers={}, it still results in some filled headers.

To keep the environment clean, we need to stop the docker containers.

container.stop()
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