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| #include "bipc.h"
|
| #define NODE0 "node0"
| #define NODE1 "node1"
| #define DATE "DATE"
|
| void
| fatal(const char *func, int rv)
| {
| fprintf(stderr, "%s: %s\n", func, bipc_strerror(rv));
| exit(1);
| }
|
| char *
| date(void)
| {
| time_t now = time(&now);
| struct tm *info = localtime(&now);
| char *text = asctime(info);
| text[strlen(text)-1] = '\0'; // remove '\n'
| return (text);
| }
|
| int
| node0(const char *url)
| {
| bipc_socket_t sock;
| int rv;
|
| // if ((rv = nng_rep0_open(&sock)) != 0) {
| // fatal("nng_rep0_open", rv);
| // }
| if ((rv = bipc_listen(&sock, url, REQ_REP)) != 0) {
| fatal("nng_listen", rv);
| }
| for (;;) {
| char *buf = NULL;
| size_t sz;
| if ((rv = bipc_recv(&sock, &buf, &sz)) != 0) {
| fatal("nng_recv", rv);
| }
| if ((sz == (strlen(DATE) + 1)) && (strcmp(DATE, buf) == 0)) {
| printf("NODE0: RECEIVED DATE REQUEST\n");
| char *d = date();
| printf("NODE0: SENDING DATE %s\n", d);
| if ((rv = bipc_send(&sock, d, strlen(d) + 1)) != 0) {
| fatal("nng_send", rv);
| }
| }
| bipc_free(buf, sz);
| }
| }
|
| int
| node1(const char *url)
| {
| bipc_socket_t sock;
| int rv;
| size_t sz;
| char *buf = NULL;
|
| // if ((rv = nng_req0_open(&sock)) != 0) {
| // fatal("bipc_socket_t", rv);
| // }
| if ((rv = bipc_connect(&sock, url, REQ_REP)) != 0) {
| fatal("nng_dial", rv);
| }
| printf("NODE1: SENDING DATE REQUEST %s\n", DATE);
| if ((rv = bipc_send(&sock, DATE, strlen(DATE)+1)) != 0) {
| fatal("nng_send", rv);
| }
| if ((rv = bipc_recv(&sock, &buf, &sz)) != 0) {
| fatal("nng_recv", rv);
| }
| printf("NODE1: RECEIVED DATE %s\n", buf);
| bipc_free(buf, sz);
| bipc_close(&sock);
| return (0);
| }
|
| int
| main(const int argc, const 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: reqrep %s|%s <URL> ...\n", NODE0, NODE1);
| return (1);
| }
|
|
