Debug Slow HTTP Requests in Python With httptap

HTTP tap, what it does is gives you the breakdown of the different phases for a particular HTTP call. For example, you might call HTTP tap and give it the URL of Real Python's homepage. The tool then connects to the page and gives you a bunch of info about the page including the IP address, what version of HTTP got used, what version of TLS got used, when the certificate associated with the page expires, how big the page was, where it got served from, and then below that information it prints an ASCII performance graph showing how long each phase of the connection took. When I ran it on Real Python, 90% of the time was spent on the DNS lookup, which would be an issue with my machine, and then there was a bit of negotiation for the TLS, then there was the wait phase, which would be the server doing something, and finally the transfer. Supports all the usual HTTP methods, so you can muck around with your REST servers. It's IP version 6 aware and is capable of exporting all that stuff I just talked about as a JSON dictionary. If you're finding your server is slow and you want to figure out what it's causing it, this can be useful. If you're getting a lot of redirects, this also breaks that down for you as well. You can also invoke the library from code, which gives you the ability to use a custom DNS resolver or TLS expector as well.