local_thr.cpp

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/* SPDX-License-Identifier: MPL-2.0 */
 
#include "../include/zmq.h"
#include <stdio.h>
#include <stdlib.h>
 
// keys are arbitrary but must match remote_lat.cpp
const char server_prvkey[] = "{X}#>t#jRGaQ}gMhv=30r(Mw+87YGs+5%kh=i@f8";
 
int main (int argc, char *argv[])
{
    const char *bind_to;
    int message_count;
    size_t message_size;
    void *ctx;
    void *s;
    int rc;
    int i;
    zmq_msg_t msg;
    void *watch;
    unsigned long elapsed;
    double throughput;
    double megabits;
    int curve = 0;
 
    if (argc != 4 && argc != 5) {
        printf ("usage: local_thr <bind-to> <message-size> <message-count> "
                "[<enable_curve>]\n");
        return 1;
    }
    bind_to = argv[1];
    message_size = atoi (argv[2]);
    message_count = atoi (argv[3]);
    if (argc >= 5 && atoi (argv[4])) {
        curve = 1;
    }
 
    ctx = zmq_init (1);
    if (!ctx) {
        printf ("error in zmq_init: %s\n", zmq_strerror (errno));
        return -1;
    }
 
    s = zmq_socket (ctx, ZMQ_PULL);
    if (!s) {
        printf ("error in zmq_socket: %s\n", zmq_strerror (errno));
        return -1;
    }
 
    //  Add your socket options here.
    //  For example ZMQ_RATE, ZMQ_RECOVERY_IVL and ZMQ_MCAST_LOOP for PGM.
    if (curve) {
        rc = zmq_setsockopt (s, ZMQ_CURVE_SECRETKEY, server_prvkey,
                             sizeof (server_prvkey));
        if (rc != 0) {
            printf ("error in zmq_setsockoopt: %s\n", zmq_strerror (errno));
            return -1;
        }
        int server = 1;
        rc = zmq_setsockopt (s, ZMQ_CURVE_SERVER, &server, sizeof (int));
        if (rc != 0) {
            printf ("error in zmq_setsockoopt: %s\n", zmq_strerror (errno));
            return -1;
        }
    }
 
    rc = zmq_bind (s, bind_to);
    if (rc != 0) {
        printf ("error in zmq_bind: %s\n", zmq_strerror (errno));
        return -1;
    }
 
    rc = zmq_msg_init (&msg);
    if (rc != 0) {
        printf ("error in zmq_msg_init: %s\n", zmq_strerror (errno));
        return -1;
    }
 
    rc = zmq_recvmsg (s, &msg, 0);
    if (rc < 0) {
        printf ("error in zmq_recvmsg: %s\n", zmq_strerror (errno));
        return -1;
    }
    if (zmq_msg_size (&msg) != message_size) {
        printf ("message of incorrect size received\n");
        return -1;
    }
 
    watch = zmq_stopwatch_start ();
 
    for (i = 0; i != message_count - 1; i++) {
        rc = zmq_recvmsg (s, &msg, 0);
        if (rc < 0) {
            printf ("error in zmq_recvmsg: %s\n", zmq_strerror (errno));
            return -1;
        }
        if (zmq_msg_size (&msg) != message_size) {
            printf ("message of incorrect size received\n");
            return -1;
        }
    }
 
    elapsed = zmq_stopwatch_stop (watch);
    if (elapsed == 0)
        elapsed = 1;
 
    rc = zmq_msg_close (&msg);
    if (rc != 0) {
        printf ("error in zmq_msg_close: %s\n", zmq_strerror (errno));
        return -1;
    }
 
    throughput = ((double) message_count / (double) elapsed * 1000000);
    megabits = ((double) throughput * message_size * 8) / 1000000;
 
    printf ("message size: %d [B]\n", (int) message_size);
    printf ("message count: %d\n", (int) message_count);
    printf ("mean throughput: %d [msg/s]\n", (int) throughput);
    printf ("mean throughput: %.3f [Mb/s]\n", (double) megabits);
 
    rc = zmq_close (s);
    if (rc != 0) {
        printf ("error in zmq_close: %s\n", zmq_strerror (errno));
        return -1;
    }
 
    rc = zmq_ctx_term (ctx);
    if (rc != 0) {
        printf ("error in zmq_ctx_term: %s\n", zmq_strerror (errno));
        return -1;
    }
 
    return 0;
}