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#include <assert.h>
#include <unistd.h>
#include <string.h>
#include <pthread.h>
#include <stdio.h>
#include <nanomsg/nn.h>
#include <nanomsg/pipeline.h>
#define NODE0 "node0"
#define NODE1 "node1"
int node0 (const char *url)
{
int sock = nn_socket (AF_SP, NN_PULL);
assert (sock >= 0);
assert (nn_bind (sock, url) >= 0);
while (1)
{
char *buf = NULL;
int bytes = nn_recv (sock, &buf, NN_MSG, 0);
assert (bytes >= 0);
printf ("NODE0: RECEIVED \"%s\"\n", buf);
nn_freemsg (buf);
}
}
int node1 (const char *url, const char *msg)
{
int sz_msg = strlen (msg) + 1; // '\0' too
int sock = nn_socket (AF_SP, NN_PUSH);
assert (sock >= 0);
assert (nn_connect (sock, url) >= 0);
printf ("NODE1: SENDING \"%s\"\n", msg);
int bytes = nn_send (sock, msg, sz_msg, 0);
assert (bytes == sz_msg);
return nn_shutdown (sock, 0);
}
int main (const int argc, const char **argv)
{
if (strncmp (NODE0, argv[1], strlen (NODE0)) == 0 && argc > 1)
return node0 (argv[2]);
else if (strncmp (NODE1, argv[1], strlen (NODE1)) == 0 && argc > 2)
return node1 (argv[2], argv[3]);
else
{
fprintf (stderr, "Usage: pipeline %s|%s <URL> <ARG> ...'\n",
NODE0, NODE1);
return 1;
}
}
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