Private (c2c) file sends uploaded the bytes (apply 0xE37_1700 + Highway)
and PbSendMsg returned ok, but the receiver saw "文件传输失败": the message
carried only FileExtra.file (metadata) and not the server-issued download
routing. Group files use a different element, hence c2c-only.
Port NapCat's upload→finalize→send sequence:
- add 0xE37_800 (FinalizeOfflineFile) OIDB service, run after the Highway
PUT to fetch the download metadata (field30)
- extend FileExtra with field6 (PrivateFileExtra.field2) and populate it
from that metadata in sendC2cFile; covers both the url-upload and the
file_id-resend send paths (both funnel through sendC2cFile)
Tests: byte-oracle locks the 0xE37_800 request + FileExtra.field6 tags;
core routing test now asserts finalize runs and field6 is populated.
Needs real-machine verification (send a private file, confirm download).
DrSmoothl
5d39cf5782