Man page - nng_msg_header_append(3)

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Manual

NNG_MSG_HEADER_APPEND

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
ERRORS
SEE ALSO

NAME

nng_msg_header_append - append to message header

SYNOPSIS

#include <nng/nng.h>

int nng_msg_header_append(nng_msg *msg, const void *val, size_t size);
int nng_msg_header_append_u16(nng_msg *msg, uint16_t val16);
int nng_msg_header_append_u32(nng_msg *msg, uint32_t val32);
int nng_msg_header_append_u64(nng_msg *msg, uint64_t val64);

DESCRIPTION

The nng_msg_header_append() family of functions appends data to the end of the headers of message msg , reallocating it if necessary. The first function appends size bytes, copying them from val .

The remaining functions append the value (such as val32 ) in network-byte order (big-endian).

RETURN VALUES

These functions return 0 on success, and non-zero otherwise.

ERRORS

NNG_ENOMEM

Insufficient free memory exists.

SEE ALSO

nng_msg_alloc(3), nng_msg_header(3), nng_msg_header_chop(3), nng_msg_header_insert(3), nng_msg_header_len(3), nng_msg_header_trim(3), nng_msg_free(3), nng_strerror(3), nng(7)