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58 lines
1.9 KiB
C
58 lines
1.9 KiB
C
/*************************************************************************\
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* Copyright (C) Michael Kerrisk, 2018. *
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* *
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* This program is free software. You may use, modify, and redistribute it *
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* under the terms of the GNU General Public License as published by the *
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* Free Software Foundation, either version 3 or (at your option) any *
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* later version. This program is distributed without any warranty. See *
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* the file COPYING.gpl-v3 for details. *
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\*************************************************************************/
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/* Solution for Exercise 59-3:d */
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/* us_xfr_v2_sv.c
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An example UNIX stream socket server. Accepts incoming connections and
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copies data sent from clients to stdout. This program is similar to
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us_xfr_sv.c, except that it uses the functions in unix_sockets.c to
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simplify working with UNIX domain sockets.
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See also us_xfr_v2_cl.c.
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*/
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#include "us_xfr_v2.h"
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int
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main(int argc, char *argv[])
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{
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int sfd, cfd;
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ssize_t numRead;
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char buf[BUF_SIZE];
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if (remove (SV_SOCK_PATH) < 0 && errno != ENOENT)
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errExit ("remove");
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sfd = unixBind(SV_SOCK_PATH, SOCK_STREAM);
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if (sfd == -1)
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errExit("unixBind");
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if (listen(sfd, 5) == -1)
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errExit("listen");
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for (;;) { /* Handle client connections iteratively */
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cfd = accept(sfd, NULL, NULL);
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if (cfd == -1)
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errExit("accept");
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/* Transfer data from connected socket to stdout until EOF */
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while ((numRead = read(cfd, buf, BUF_SIZE)) > 0)
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if (write(STDOUT_FILENO, buf, numRead) != numRead)
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fatal("partial/failed write");
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if (numRead == -1)
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errExit("read");
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if (close(cfd) == -1)
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errMsg("close");
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}
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}
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