ssize_t

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                            MONGOC_SOCKET_SENDV(3)

       Sends a vector of buffers to the destination. This uses sendmsg() when available to  perform  a  gathered
       write. If IOV_MAX is reached, a fallback will be used.

       • sock: A mongoc_socket_t.

       • iov: A mongoc_iovec_t.

       • iovcnt: A size_t containing the number of elements in iov.

       • expire_at:  A  int64_t  with absolute timeout in monotonic time. The monotonic clock is in microseconds
         and can be fetched using SystemClock.

       the number of bytes sent on success, or -1 on failure and errno is set.

          ssize_t
          mongoc_socket_sendv (mongoc_socket_t *sock,
                               mongoc_iovec_t *iov,
                               size_t iovcnt,
                               int64_t expire_at);