yosh

I've been stewing over a potential new HTTP/2 non-critical INFO extension frame that can be used by client or server to pass simple diagnostic data over a connection. It would essentially be a frame for log data.

Frame payload would be: +-------------------------------+-------------------------------+ | Level (8) | Payload ... +-------------------------------+-------------------------------+ Where Level is an 8-bit numeric log level ...

That is.... fatal: 0x1 error: 0x2 warn: 0x3 info: 0x4 debug: 0x5 trace: 0x6

The payload would be some arbitrary sequence of bytes (typically some serialized text). The frame would be non-critical so it can be ignored.

A new SETTINGS Parameter to specify the MAXIMUM_INFO_LEVEL would allow a peer to communicate whether or not it wants INFO frames. A value of 0 (the default) means it does not want them

The INFO frame could be sent on Stream 0 or any specific Stream ID and could be sent on any locally open stream.