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41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/* Internet Socket Example using sockaddr_in.
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Copyright (C) 1991-2020 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <https://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netdb.h>
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void
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init_sockaddr (struct sockaddr_in *name,
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const char *hostname,
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uint16_t port)
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{
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struct hostent *hostinfo;
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name->sin_family = AF_INET;
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name->sin_port = htons (port);
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hostinfo = gethostbyname (hostname);
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if (hostinfo == NULL)
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{
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fprintf (stderr, "Unknown host %s.\n", hostname);
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exit (EXIT_FAILURE);
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}
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name->sin_addr = *(struct in_addr *) hostinfo->h_addr;
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}
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