Category : Files from Magazines
Archive   : PROGJRNL.ZIP
Filename : LISTING.4

 
Output of file : LISTING.4 contained in archive : PROGJRNL.ZIP
1 /*
2 * client.c ----- A potential customer for the background process
3 * (i.e., "daemon"). All it does is send a string
4 * and its process id to the daemon.
5 * Note that read() and write() are atomic,
6 * uninterruptable system calls. This guarantees
7 * that our data arrive in one piece and not
8 * interleaved with some other client's data.
9 */
10
11 #include
12 #include
13 #include
14 #include "local.h"
15
16 int fd; /* File descriptor for the Named Pipe (FIFO) */
17 PACKET msg; /* Information to be sent over a FIFO to a server process */
18
19 main(argc,argv)
20 char **argv;
21 {
22 int quit(); /* What to do when killed */
23
24 srand(getpid());
25
26 msg.pid = getpid(); /* Setup the data to be sent */
27 strcpy(msg.string, "Message from a Client");
28
29
30 /* Open the FIFO (Named Pipe) for writing */
31
32 if ( (fd = open(PIPE, O_WRONLY)) == -1 )
33 fprintf(stderr, "Cannot open PIPE in client\n"), exit(1);
34
35 signal(SIGINT, quit); /* Prepare for a Break */
36
37 while(1)
38 {
39 write(fd, &msg, sizeof msg); /* Write to server */
40
41 sleep(rand() % 10); /* Nice and slow, so we can see msgs */
42 }
43 }
44
45 /*****************************************************************************/
46
47 quit()
48 {
49 strcpy(msg.string, "Done"); /* Tell server to kill itself */
50 write(fd, &msg, sizeof msg);
51 exit(0); /* Kill this particular client */
52 }


  3 Responses to “Category : Files from Magazines
Archive   : PROGJRNL.ZIP
Filename : LISTING.4
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

    But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/