lsof: can't identify protocol

from blog Marek's idea of the day, | ↗ original
Marek's Marek's totally not insanetotally not insane idea of the day idea of the day 09 December 201209 December 2012 SockJS-nodeSockJS-node users noticed that the server seems to be leaking file descriptors when websockets are enabled. The problem resulted in the usual users noticed that the server seems to be leaking file descriptors when websockets are enabled. The problem resulted in the usual EMFILE - Too many open filesEMFILE - Too many open files crash. crash. Additionally, Additionally, lsoflsof was... was...