nng_msg_header_chop - remove data from end of message header
Contents
Description
The nng_msg_header_chop() family of functions removes data from the end of the header of message msg. The
first function removes size bytes. The remaining functions remove 2, 4, or 8 bytes, and stores them in
the value (such as val32), after converting them from network-byte order (big-endian) to native byte
order.
Errors
NNG_EINVAL
The message header is too short to remove the requested data.
Name
nng_msg_header_chop - remove data from end of message header
Return Values
These function return 0 on success, and non-zero otherwise.
See Also
nng_msg_alloc(3), nng_msg_header(3), nng_msg_header_append(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) 2025-04-20 NNG_MSG_HEADER_CHOP(3)
Synopsis
#include <nng/nng.h>
int nng_msg_header_chop(nng_msg *msg, size_t size);
int nng_msg_header_chop_u16(nng_msg *msg, uint16_t *val16);
int nng_msg_header_chop_u32(nng_msg *msg, uint32_t *val32);
int nng_msg_header_chop_u64(nng_msg *msg, uint64_t *val64);
