#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <nanomsg/nn.h>
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#include <nanomsg/bus.h>
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void
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fatal(const char *func)
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{
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fprintf(stderr, "%s: %s\n", func, nn_strerror(nn_errno()));
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exit(1);
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}
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int
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node(const int argc, const char **argv)
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{
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int sock;
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if ((sock = nn_socket (AF_SP, NN_BUS)) < 0)
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{
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fatal("nn_socket");
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}
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if (nn_bind(sock, argv[2]) < 0)
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{
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fatal("nn_bind");
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}
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sleep(1); // wait for peers to bind
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if (argc >= 3)
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{
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for (int x = 3; x < argc; x++)
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{
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if (nn_connect(sock, argv[x]) < 0)
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{
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fatal("nn_connect");
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}
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}
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}
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sleep(1); // wait for connections
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int to = 100;
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if (nn_setsockopt(sock, NN_SOL_SOCKET, NN_RCVTIMEO, &to,
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sizeof (to)) < 0)
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{
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fatal("nn_setsockopt");
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}
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// SEND
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int sz_n = strlen(argv[1]) + 1; // '\0' too
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printf("%s: SENDING '%s' ONTO BUS\n", argv[1], argv[1]);
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if (nn_send(sock, argv[1], sz_n, 0) < 0)
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{
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fatal("nn_send");
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}
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// RECV
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for (;;)
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{
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char *buf = NULL;
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int recv = nn_recv(sock, &buf, NN_MSG, 0);
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if (recv >= 0)
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{
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printf("%s: RECEIVED '%s' FROM BUS\n", argv[1], buf);
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nn_freemsg(buf);
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}
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}
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return (nn_shutdown(sock, 0));
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}
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int
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main(int argc, const char **argv)
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{
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if (argc >= 3)
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{
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return (node(argc, argv));
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}
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fprintf(stderr, "Usage: bus <NODE_NAME> <URL> <URL> ...\n");
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return 1;
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}
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