Log is a plaintext file with single log entry per line. Lines are "\n" separated. It is not intended to be read by human – use nncp-log utility.
Each line has the following format:
LEVEL | DATETIME | SD | MSG
Example log records:
I 2017-01-09T08:41:54.751732131Z [nncp-xfer node="VHMTRWDOXPLK7BR55ICZ5N32ZJUMRKZEMFNGGCEAXV66GG43PEBQ" pkt="KMG6FO5UNEK7HWVFJPWQYC7MOZ76KEZ4FWCGM62PWA2QE5755NPA" size="4162548" xx="tx"] I 2017-01-09T08:42:18.990005394Z [sp-infos node="BYRRQUULEHINPKEFN7CHMSHR5I5CK7PMX5HQNCYERTBAR4BOCG6Q" pkts="0" size="0" xx="tx"] I 2017-01-09T08:48:59.264847401Z [call-finish duration="10" node="BYRRQUULEHINPKEFN7CHMSHR5I5CK7PMX5HQNCYERTBAR4BOCG6Q" rxbytes="60" rxspeed="60" txbytes="108" txspeed="108"]
Space character.
Is single character log level. As a rule is is either I (informational message), or E (error message).
UTC datetime in RFC 3339 2006-01-02T15:04:05.999999999Z format.
Structured data as in RFC 5424.
Arbitrary UTF-8 encoded text data.