This documentation is for the TIP (development tree) of NNG and may represent unreleased changes or functionality that is experimental, and is subject to change before release. The latest released version is v1.3.2. See the documentation for v1.3.2 for the most up-to-date information.

nng_msg_header(3)

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.

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.)
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