WebHttp.md

WebHttp.md

Cross-Browser Testing

• https://chrome.google.com/webstore/detail/ie-tab/

Tools

• Inspector: https://httptoolkit.tech/

CORS

• https://www.moesif.com/blog/technical/cors/Authoritative-Guide-to-CORS-Cross-Origin-Resource-Sharing-for-REST-APIs/#
• Chrome dev tools do not show OPTIONS requests anymore: https://dev.to/pimterry/chrome-79-no-longer-shows-preflight-cors-requests-4k7e

Http Caching

• Postman sends the Cache-Control: no-cache header by default, and needs to be disabled in the settings
• 304 responses by express do not include the body, but it’s shown anyway in the Chrome Dev Tools
• Chrome dev tools do not show headers sent because of the Site Isolation feature added in Chrome 67
  • https://developers.google.com/web/updates/2018/07/site-isolation
  • https://www.chromium.org/Home/chromium-security/site-isolation#TOC-Known-Issues