NAME
nng_msg_header - return message header
SYNOPSIS
#include <nng/nng.h> void *nng_msg_header(nng_msg *msg);
DESCRIPTION
The nng_msg_header() function returns a pointer to the start of the header content of the message msg.
Note
The message header contains protocol-specific header content. Most applications should not need to access this content, but it is available for raw mode sockets (set with the NNG_OPT_RAW option.)
Note
The value returned by this is invalidated by a call to any of the functions that modify the message or the header content.
RETURN VALUES
Pointer to start of message header.
ERRORS
None.
SEE ALSO
nng_msg_alloc(3), nng_msg_body(3), nng_msg_free(3), nng_msg_header_append(3), nng_msg_header_chop(3), nng_msg_header_insert(3) nng_msg_header_len(3), nng_msg_header_trim(3), nng_msg(5), nng(7)