1nbd_aio_connect_tcp(3)              LIBNBD              nbd_aio_connect_tcp(3)
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NAME

6       nbd_aio_connect_tcp - connect to the NBD server over a TCP port
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SYNOPSIS

9        #include <libnbd.h>
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11        int nbd_aio_connect_tcp (
12              struct nbd_handle *h, const char *hostname,
13              const char *port
14            );
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DESCRIPTION

17       Begin connecting to the NBD server listening on "hostname:port".
18       Parameters behave as documented in nbd_connect_tcp(3).
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20       You can check if the connection attempt is still underway by calling
21       nbd_aio_is_connecting(3).  If nbd_set_opt_mode(3) is enabled, the
22       connection is ready for manual option negotiation once
23       nbd_aio_is_negotiating(3) returns true; otherwise, the connection
24       attempt will include the NBD handshake, and is ready for use once
25       nbd_aio_is_ready(3) returns true.
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RETURN VALUE

28       If the call is successful the function returns 0.
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ERRORS

31       On error -1 is returned.
32
33       Refer to "ERROR HANDLING" in libnbd(3) for how to get further details
34       of the error.
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36       The following parameters must not be NULL: "h", "hostname", "port".
37       For more information see "Non-NULL parameters" in libnbd(3).
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HANDLE STATE

40       The handle must be newly created, otherwise this call will return an
41       error.
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VERSION

44       This function first appeared in libnbd 1.0.
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46       If you need to test if this function is available at compile time check
47       if the following macro is defined:
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49        #define LIBNBD_HAVE_NBD_AIO_CONNECT_TCP 1
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SEE ALSO

52       nbd_aio_is_connecting(3), nbd_aio_is_negotiating(3),
53       nbd_aio_is_ready(3), nbd_connect_tcp(3), nbd_create(3),
54       nbd_set_opt_mode(3), libnbd(3).
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AUTHORS

57       Eric Blake
58
59       Richard W.M. Jones
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62       Copyright Red Hat
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LICENSE

65       This library is free software; you can redistribute it and/or modify it
66       under the terms of the GNU Lesser General Public License as published
67       by the Free Software Foundation; either version 2 of the License, or
68       (at your option) any later version.
69
70       This library is distributed in the hope that it will be useful, but
71       WITHOUT ANY WARRANTY; without even the implied warranty of
72       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
73       Lesser General Public License for more details.
74
75       You should have received a copy of the GNU Lesser General Public
76       License along with this library; if not, write to the Free Software
77       Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
78       02110-1301 USA
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82libnbd-1.18.1                     2023-10-31            nbd_aio_connect_tcp(3)
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