This attempts to show the failure of redis' punsubscribe cmd

punsubscribe-test.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "hiredis.h"

int main(void) {
    int ppid = fork();
    if (ppid == 0) {
        redisContext *c;
        redisReply *reply;
        c = redisConnect((char*)"127.0.0.1", 6379);
        if (c->err) {
            printf("Connection error: %s\n", c->errstr);
            exit(1);
        }
        
        printf("Subscribing\n");
        reply = redisCommand(c,"SUBSCRIBE foo");
        freeReplyObject(reply);
        
        // Should get bar
        redisGetReply(c, (void**)&reply);
        printf("Reply is: %s\n", reply->element[2]->str);
        freeReplyObject(reply);
        
        printf("Unsubscribing\n");
        reply = redisCommand(c,"PUNSUBSCRIBE *");
        printf("Unsubscribed from %s\n", reply->element[1]->str);
        freeReplyObject(reply);
        
        // Really, we should hang here, but we'll get zip
        redisGetReply(c, (void**)&reply);
        printf("Reply is: %s\n", reply->element[2]->str);
        freeReplyObject(reply);
        exit(0);
    }
    else {
        redisContext *c;
        redisReply *reply;
        c = redisConnect((char*)"127.0.0.1", 6379);
        if (c->err) {
            printf("Connection error: %s\n", c->errstr);
            exit(1);
        }
        
        // I expect this to go through
        sleep(1);
        printf("Publishing");
        reply = redisCommand(c, "PUBLISH foo bar");
        freeReplyObject(reply);
        
        // This should come in after the unsubscribe (monitor can confirm this)
        sleep(1);
        printf("Publishing");
        reply = redisCommand(c, "PUBLISH foo zip");
        freeReplyObject(reply);
    }
    wait(0);
    return 0;
}