Function sendv

net/basic_socket.cpp:188–194

}

ssize_t sendv(int fd, const struct iovec *iov, int iovcnt, int flag, Timeout timeout) {
    msghdr msg = {};
    msg.msg_iov = (struct iovec*)iov;
    msg.msg_iovlen = iovcnt;
    return DOIO_ONCE(::sendmsg(fd, &msg, flag | MSG_NOSIGNAL),
          wait_for_fd_writable(fd, timeout));
}

ssize_t send_n(int fd, const void *buf, size_t count, int flag, Timeout timeout) {
    return DOIO_LOOP(send(fd, buf, count, flag, timeout), BufStep((void*&)buf, count));