Issue: When Fiddler intercepts npm install’s HTTPS traffic, the URL mistakenly uses HTTP on port 443, resulting in a 400 error. How can this be resolved?
hey, i had the same probs; i solved it by disabling fiddler’s rewriting of https so npm’s request goes untouched. hope it helps!
In my experience, the error you are facing stems from Fiddler’s attempt to intercept and modify secure HTTPS calls, causing a protocol miscommunication on port 443. I overcame this by carefully reviewing Fiddler’s session options and disabling any rewriting of HTTPS requests in the advanced settings. It is also advisable to verify that npm is using the correct configuration for secure traffic by ensuring the strict-ssl option is enabled. Adjusting these settings can help maintain secure communication and prevent misinterpretation of the URL scheme.
Based on my experience, this issue can be traced back to a mismatch between Fiddler’s handling of HTTPS traffic and the npm install process. I noticed that ensuring Fiddler was configured to correctly manage secure sessions is crucial. In my case, modifying the certificate settings within Fiddler helped align its behavior with npm’s expectations. Additionally, I made sure to review npm’s configuration to verify that it was explicitly set to utilize secure protocols. This dual approach of addressing both Fiddler’s interception settings and npm’s configuration parameters proved effective in bypassing the error.