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)

                                            2024-12-27                          NNG_MSG_HEADER(3)