#PROXYMAN ERROR HOW TO#
#PROXYMAN ERROR CODE#
#PROXYMAN ERROR WINDOWS#

Make sure to set both HTTP_PROXY and HTTPS_PROXY environment variables to ensure both insecure and secure HTTP are captured. This is a comma-separated string of IP addresses and/or host names.

The proxy address given either as complete URL or as host:port that will be used for HTTPS requests unless overwritten by NO_PROXY. The proxy address given either as complete URL or as host:port that will be used for HTTP requests unless overwritten by NO_PROXY. Unlike some applications that use host OS proxy settings, Go programs depend on the presence of specific Environment Variables to determine whether to use a proxy and where it is listening. To have k6 send its traffic through a web proxy, we'll need to tell it on which TCP port the web proxy is listening.īehind the scenes, k6 runs Go, and we use the built-in Go HTTP client for communication.

#PROXYMAN ERROR HOW TO#

Installation and configuration of the proxies is beyond the scope of this article, instead we'll focus on how to configure k6 to send its HTTP/S traffic through the proxy once it is up and running.

#PROXYMAN ERROR WINDOWS#

To deal with encrypted HTTPS, they all require the installation of a certificate that enables the proxy to act as a Certificate Authority (the mitmproxy documentation provides a great explanation on how exactly that works).Īs a long-time Windows user (gasp!), my favorite has been Fiddler Classic, and you'll see a few screenshots of it in action later in this tutorial. As Wireshark captures all network traffic and not just HTTP/S, it can also be difficult to find the packets you're looking for without setting up filters.Īll of the WDPs listed in the table operate in the same way, with most also providing different ways of proxying (such as reverse proxying). Windows: Free, Cross-platform: CommercialĪlthough technically not a WDP, Wireshark deserves a mention here as another debugging tool that can sometimes be useful, however the process of decrypting HTTPS traffic is a bit more involved. There are numerous WDPs available today, a selection of which can be found below:įiddler Classic: Windows, Fiddler Everywhere: Cross-platform This can be handy in situations where the server expects some kind of encoded value but you don't know what encoding might be happening behind-the-scenes, or when you need to compare a script replay with a recording taken with the browser (most WDPs support importing HAR files). This goes for encrypted HTTPS traffic as well.Īside from providing a purpose-built UI for viewing HTTP requests and responses, WDPs also cater for an independent view of the conversation as a result of this MITM approach. Assuming traffic is flowing through the proxy (we'll get to that in a bit), the HTTP data will be visible for you to inspect. In hacker/technical terms, this is the Man-In-The-Middle (MITM) approach. In essence, a WDP puts itself into the middle of the conversation between the client (like your browser, k6, or any proxy-aware application running on your machine) and the server. Doing so can be challenging when relying purely on console.log statements or using -http-debug=full, and so this article presents another way of showing the HTTP traffic: using a web debugging proxy. HTTP conversations can be quite complex, particularly when dealing with website HTTP traffic (as opposed to APIs) and when there is a sequence of requests taking place with dynamic identifiers (in other words, Correlation).ĭebugging HTTP requires looking at a lot of places to see what could be going wrong.

You start wondering: why on earth is that? Other times, you'll run your script and see it receive the expected responses (usually HTTP 200), yet the 'thing' your script is meant to create simply doesn't show up anywhere, like on the database or as a record on the site.

#PROXYMAN ERROR CODE#

When you run your scripts, you may observe unexpected error status codes (typically in the 4xx-5xx status code range). One of the more challenging aspects of load testing happens very early on: getting your scripts working. Some things to look out for when debugging your performance test.What kind of web debugging proxies are available on your OS.How to configure k6 to send HTTP traffic through a web proxy.

Proxyman error