NAME

       io_uring_prep_connect - prepare a connect request

SYNOPSIS

       #include <sys/types.h>
       #include <sys/socket.h>
       #include <liburing.h>

       void io_uring_prep_connect(struct io_uring_sqe *sqe,
                                  int sockfd,
                                  const struct sockaddr *addr,
                                  socklen_t addrlen);

DESCRIPTION

       The  io_uring_prep_connect(3)  function  prepares  a connect request. The submission queue
       entry sqe is setup  to  use  the  file  descriptor  sockfd  to  start  connecting  to  the
       destination described by the socket address at addr and of structure length addrlen.

       This function prepares an async connect(2) request. See that man page for details.

RETURN VALUE

       None

ERRORS

       The  CQE  res field will contain the result of the operation. See the related man page for
       details on possible values. Note that where synchronous system calls  will  return  -1  on
       failure  and  set  errno to the actual error value, io_uring never uses errno.  Instead it
       returns the negated errno directly in the CQE res field.

NOTES

       As with any request that passes in data in a struct, that data must remain valid until the
       request has been successfully submitted. It need not remain valid until completion. Once a
       request has been submitted, the in-kernel state is stable. Very  early  kernels  (5.4  and
       earlier)  required state to be stable until the completion occurred. Applications can test
       for this behavior by  inspecting  the  IORING_FEAT_SUBMIT_STABLE  flag  passed  back  from
       io_uring_queue_init_params(3).

SEE ALSO

       io_uring_get_sqe(3), io_uring_submit(3), connect(2)