nng_msg_header_len(3) NAME nng_msg_header_len - return message header length SYNOPSIS #include <nng/nng.h> size_t nng_msg_header_len(nng_msg *msg); DESCRIPTION The nng_msg_header_len() returns the length of message header of msg. RETURN VALUES Length of message header. ERRORS None. SEE ALSO nng_msg_alloc(3), nng_msg_header(3), nng_msg(5), nng(7)