rjwalsh | f5f536f | 2003-11-17 17:45:00 +0000 | [diff] [blame] | 1 | #include <sys/types.h> |
| 2 | #include <sys/wait.h> |
| 3 | #include <sys/socket.h> |
| 4 | #include <netinet/in.h> |
| 5 | #include <arpa/inet.h> |
| 6 | #include <stdio.h> |
| 7 | #include <fcntl.h> |
| 8 | #include <unistd.h> |
| 9 | #include <stdlib.h> |
| 10 | #include <string.h> |
| 11 | |
| 12 | void |
| 13 | server () |
| 14 | { |
| 15 | int s, x; |
| 16 | struct sockaddr_in baddr; |
| 17 | struct sockaddr_in addr; |
| 18 | int baddrsize = sizeof(baddr); |
| 19 | int one = 1; |
| 20 | |
| 21 | s = socket(PF_INET, SOCK_STREAM, 0); |
| 22 | if(s == -1) { |
| 23 | perror("socket"); |
| 24 | exit(1); |
| 25 | } |
| 26 | |
| 27 | setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(int)); |
| 28 | memset(&addr, 0, sizeof(addr)); |
| 29 | addr.sin_family = AF_INET; |
| 30 | addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
| 31 | addr.sin_port = 12321; |
| 32 | |
| 33 | if(bind(s, (struct sockaddr *)&addr, sizeof(addr)) == -1) { |
| 34 | perror("bind"); |
| 35 | exit(1); |
| 36 | } |
| 37 | |
| 38 | if(listen(s, 5) == -1) { |
| 39 | perror("listen"); |
| 40 | exit(1); |
| 41 | } |
| 42 | |
| 43 | memset(&baddr, 0, sizeof(baddr)); |
| 44 | x = accept(s, (struct sockaddr *)&baddr, &baddrsize); |
| 45 | if(x == -1) { |
| 46 | perror("accept"); |
| 47 | exit(1); |
| 48 | } |
| 49 | |
| 50 | write(x, "hello", 6); |
| 51 | } |
| 52 | |
| 53 | void |
| 54 | client () |
| 55 | { |
| 56 | int s, count = 0, ret; |
| 57 | struct sockaddr_in addr; |
| 58 | char buf[1024]; |
| 59 | |
| 60 | s = socket(PF_INET, SOCK_STREAM, 0); |
| 61 | if(s == -1) { |
| 62 | perror("socket"); |
| 63 | exit(1); |
| 64 | } |
| 65 | |
| 66 | addr.sin_family = AF_INET; |
| 67 | addr.sin_addr.s_addr = inet_addr("127.0.0.1"); |
| 68 | addr.sin_port = 12321; |
| 69 | |
| 70 | do { |
| 71 | count++; |
| 72 | ret = connect(s, (struct sockaddr *)&addr, sizeof(addr)); |
| 73 | if(ret == -1) sleep(1); |
| 74 | } while (count < 10 && ret == -1); |
| 75 | |
| 76 | if(ret == -1) { |
| 77 | perror("connect"); |
| 78 | exit(1); |
| 79 | } |
| 80 | |
| 81 | read(s, buf, sizeof(buf)); |
| 82 | |
| 83 | printf("%s\n", buf); |
| 84 | } |
| 85 | |
| 86 | |
| 87 | int |
| 88 | main (int argc, char **argv) |
| 89 | { |
| 90 | int pid, status; |
| 91 | |
| 92 | /* |
| 93 | * Fedora Core 1's Perl opens /dev/pts/2 as fd 10. Let's close it |
| 94 | * now to get consistent results across different releases. |
| 95 | */ |
| 96 | |
| 97 | close(10); |
| 98 | |
| 99 | if((pid = fork()) == 0) { |
| 100 | server(); |
| 101 | return 0; |
| 102 | } |
| 103 | |
| 104 | client(); |
| 105 | |
| 106 | wait(&status); |
| 107 | |
| 108 | return 0; |
| 109 | } |