PS: segreq handler should log more about fetcher errors and reply with NACK/error #3091
Description
If the segfetcher logic in the PS returns an error, the handler silently returns, we should log the error and return a negative reply to the client.
Problematic code:
scion/go/path_srv/internal/segreq/handler.go
Lines 70 to 74 in cd316a3
and missing logging in:
scion/go/path_srv/internal/segreq/handler.go
Lines 87 to 89 in cd316a3