ssize_t

       MongoDB, Inc

       2009-present, MongoDB, Inc.

1.30.4                                            Jun 08, 2025                             MONGOC_SOCKET_SEND(3)

       Sends buflen bytes in buf to the destination. If a timeout expired, the number  of  bytes  sent  will  be
       returned or -1 if no bytes were sent.

       • sock: A mongoc_socket_t.

       • buf: A buffer to send.

       • buflen: A size_t with the number of bytes in buf.

       • expire_at:  A int64_t with an absolute timeout for the operation or 0. The timeout is in monotonic time
         using microseconds. You can retrieve the current monotonic time with SystemClock.

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

          ssize_t
          mongoc_socket_send (mongoc_socket_t *sock,
                              const void *buf,
                              size_t buflen,
                              int64_t expire_at);