AlexandruRoman / https-har-replay

Node.js proxy for replaying HTTPS responses provided in a HAR file.

1. Generate Self-Signed Certificate - Linux/Mac

openssl genrsa -out ./my-certificate.key 2048

openssl req -x509 -new -nodes -key ./my-certificate.key -days 1024 -out ./my-certificate.crt -subj "/C=US/ST=Utah/L=Provo/O=ACME Signing Authority Inc/CN=hoxyproxy.com"

   or the one-liner which generates both the certificate and the key

openssl req -x509 -new -nodes -newkey rsa:2048 -keyout ./my-certificate.key -days 1024 -out ./my-certificate.crt -subj "/C=US/ST=Utah/L=Provo/O=ACME Signing Authority Inc/CN=hoxyproxy.com"

2. Install certificate

• Linux: neeed to make Chrome trust the self-signed certificate - Settings → Privacy and security → Security → Manage certificates → Authorities - Click on Import and then import the generated certificate (e.g. my-certificate.crt) - In Trust Settings check the "Trust this certificate for identifying websites" checkbox and save the modifications

• Mac: https://www.eduhk.hk/ocio/content/faq-how-add-root-certificate-mac-os-x

3. Install npm packages

• this project uses the Web Sniffer npm package which needs to be installed

npm install web-proxy-sniffer

4. Run proxy

node proxy.mjs <path_to_HAR_file>

5. SwitchyOmega Chrome extension

   Install https://chrome.google.com/webstore/detail/proxy-switchyomega/padekgcemlokbadohgkifijomclgjgif?hl=en

   In your proxy profile, make sure that:

• the server is localhost
• the port is 8080
• the Bypass List is empty

  It should finally look like this:

Now, all you have to do is:

• change the proxy to proxy from the SwitchyOmega Chrome extension's popup panel
• navigate to the page where the HAR file was captured from
• be happy or sad (depending on the results)

Alternative: configure proxy settings for Chromium/Google Chrome from Command Line

Warning: This approach is still in its early stages and experimental, please use node v14.x.x

Here is how to configure the proxy settings manually for your browser session, in case you don't want to use SwitchyOmega.

After you started the proxy server (as indicated in step 4), open a separate terminal window and run:

google-chrome-stable  --proxy-server="http://localhost:8080" --proxy-bypass-list="<-loopback>"

google-chrome-stable can also be replaced with google-chrome-beta or chromium (or the path to the Chrome/Chromium executable on your machine)