earlyHints constant
int
const earlyHints
earlyHints = 103.
This code indicates that the server is likely to send a final response with the headers included in this informational response, but is still processing the request. This allows the client to start processing the headers early.
RFC 8297: https://tools.ietf.org/html/rfc8297
Implementation
static const int earlyHints = 103;