李二狗 — @Meniny
Table of Content
Apple staff gave the following answer:
TICexpands to "TCP I/O connection", which is a subsystem withinCFNetworkthat runs aTCPconnection.For example:
TIC Read Status [11:0x0]: 1:57.
1and57are theCFStreamErrordomain and code, respectively; a domain of1iskCFStreamErrorDomainPOSIXand, within that domain,57isENOTCONN.In short, a
TCPread has failed withENOTCONN.As the
TCP I/O connectionsubsystem has no public API, you must necessarily be using it via some high-level wrapper (likeNSURLSession).
