1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
| #include "bipc.h"
|
| #define NODE0 "node0"
| #define NODE1 "node1"
|
| void
| fatal(const char *func, int rv)
| {
| fprintf(stderr, "%s: %s\n", func, bipc_strerror(rv));
| exit(1);
| }
|
| int
| send_name(bipc_socket_t sock, const char *name)
| {
| int rv;
| printf("%s: SENDING \"%s\"\n", name, name);
| if ((rv = bipc_send(&sock, name, strlen(name) + 1)) != 0) {
| fatal("bipc_send", rv);
| }
| return (rv);
| }
|
| int
| recv_name(bipc_socket_t sock, const char *name)
| {
| char *buf = NULL;
| int rv;
| size_t sz;
| if ((rv = bipc_recv(&sock, &buf, &sz)) == 0) {
| printf("%s: RECEIVED \"%s\"\n", name, buf);
| nng_free(buf, sz);
| }
| return (rv);
| }
|
| int
| send_recv(bipc_socket_t sock, const char *name)
| {
| int rv;
| int timeout = 100;
| // if ((rv = nng_setopt_ms(sock, NNG_OPT_RECVTIMEO, 100)) != 0) {
| if ((rv = bipc_setopt(&sock, BIPC_OPT_RECVTIMEO, &timeout, sizeof(int))) != 0) {
| fatal("nng_setopt_ms", rv);
| }
| for (;;) {
| recv_name(sock, name);
| sleep(1);
| send_name(sock, name);
| }
| }
|
| int
| node0(const char *url)
| {
| bipc_socket_t sock;
| int rv;
| // if ((rv = nng_pair0_open(&sock)) != 0) {
| // fatal("nng_pair0_open", rv);
| // }
| if ((rv = bipc_listen(&sock, url, PAIR)) !=0) {
| fatal("nng_listen", rv);
| }
| return (send_recv(sock, NODE0));
| }
|
| int
| node1(const char *url)
| {
| bipc_socket_t sock;
| int rv;
| sleep(1);
| // if ((rv = nng_pair0_open(&sock)) != 0) {
| // fatal("nng_pair0_open", rv);
| // }
| if ((rv = bipc_connect(&sock, url, PAIR)) != 0) {
| fatal("nng_dial", rv);
| }
| return (send_recv(sock, NODE1));
| }
|
| int
| main(int argc, char **argv)
| {
| if ((argc > 1) && (strcmp(NODE0, argv[1]) == 0))
| return (node0(argv[2]));
|
| if ((argc > 1) && (strcmp(NODE1, argv[1]) == 0))
| return (node1(argv[2]));
|
| fprintf(stderr, "Usage: pair %s|%s <URL> <ARG> ...\n", NODE0, NODE1);
| return 1;
| }
|
|
