NAME

       nng_msg_header_trim - remove data from start of message header

SYNOPSIS

           #include <nng/nng.h>

           int nng_msg_header_trim(nng_msg *msg, size_t size);
           int nng_msg_header_trim_u16(nng_msg *msg, uint16_t *val16);
           int nng_msg_header_trim_u32(nng_msg *msg, uint32_t *val32);
           int nng_msg_header_trim_u64(nng_msg *msg, uint64_t *val64);

DESCRIPTION

       The nng_msg_header_trim() family of functions remove data from the start of the header of message msg.
       The first function removes size bytes. The remaining functions removes 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.

RETURN VALUES

       This function returns 0 on success, and non-zero otherwise.

ERRORS

       NNG_EINVAL
           The message header is too short to remove the requested data.

SEE ALSO

       nng_msg_alloc(3), nng_msg_header(3), nng_msg_header_append(3), nng_msg_header_chop(3),
       nng_msg_header_insert(3), nng_msg_header_len(3), nng_msg_free(3), nng_strerror(3), nng_msg(5), nng(7)

                                                   2025-02-02                             NNG_MSG_HEADER_TRIM(3)