nng_msg_trim - remove data from start of message body

       The nng_msg_trim() family of functions removes data from the start of the body 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.

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

       nng_msg_trim - remove data from start of message body

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

nng_msg_alloc(3), nng_msg_append(3), nng_msg_body(3), nng_msg_chop(3), nng_msg_free(3),
       nng_msg_insert(3), nng_msg_len(3), nng_msg_realloc(3), nng_strerror(3), nng_msg(5), nng(7)

                                                   2025-04-20                                    NNG_MSG_TRIM(3)

           #include <nng/nng.h>

           int nng_msg_trim(nng_msg *msg, size_t size);
           int nng_msg_trim_u16(nng_msg *msg, uint16_t *val16);
           int nng_msg_trim_u32(nng_msg *msg, uint32_t *val32);
           int nng_msg_trim_u64(nng_msg *msg, uint64_t *val64);