Networking
- TLS Certificate Decoder Guide
A certificate contains names, dates, an issuer, and a public key. The TLS Certificate Decoder reads those fields from PEM text; it does not establish whether a browser would accept the certificate.
- Network Debugging Notes
“The service is down” can mean several things: DNS points to the wrong address, the port cannot be reached, the connection works but TLS fails, or the application replies with an error.
- Testing and Debugging WebSockets
A WebSocket connection starts as an HTTP request that asks to upgrade protocols. A page loading successfully tells you very little about whether that upgrade works. Check the handshake first In the Network tab, find the …