How to Access the Full HTTP Request in Python Applications?

Accessing the Full HTTP Request in Python Applications

When encountering API-related errors, it often becomes necessary to provide the complete HTTP request to the support team for further investigation. This includes not only the response payload but also the request headers.

In Python applications, this can be achieved using the latest versions of the requests library (1.x and higher). Requests leverages the logging module to control the verbosity of HTTP requests. By enabling debug mode at the http.client level, you can capture the entire request, including headers and data.

Demonstration

The following code snippet exemplifies how to enable debug logging:

import requests
import logging

# Enable HTTP client debugging
http_client.HTTPConnection.debuglevel = 1

# Configure loggers
logging.basicConfig()
logging.getLogger().setLevel(logging.DEBUG)
requests_log = logging.getLogger("requests.packages.urllib3")
requests_log.setLevel(logging.DEBUG)
requests_log.propagate = True

# Make an HTTP request
requests.get('https://httpbin.org/headers')

Example Output

When the code is executed, you will observe the following debug output:

INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): httpbin.org
send: 'GET /headers HTTP/1.1\r\nHost: httpbin.org\r\nAccept-Encoding: gzip, deflate, compress\r\nAccept: */*\r\nUser-Agent: python-requests/1.2.0 CPython/2.7.3 Linux/3.2.0-48-generic\r\n\r\n'
reply: 'HTTP/1.1 200 OK\r\n'
header: Content-Type: application/json
header: Date: Sat, 29 Jun 2013 11:19:34 GMT
header: Server: gunicorn/0.17.4
header: Content-Length: 226
header: Connection: keep-alive
DEBUG:requests.packages.urllib3.connectionpool:"GET /headers HTTP/1.1" 200 226

This output provides a detailed log of the request, including all headers and the response status code.

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