c++ - How to publish asynchronously with HiRedis -

i using hiredis c/c++ program , have written tests verify subscriptions work (i based solution on this comment).

however, can publish manually typing publish foo "abcd" redis-cli terminal. works per linked comment, i'd publish from c++ program. how can this?

i have tried command:

redisasynccommand(c, subcallback, (char*)"command", "publish foo \"abcd\""); 

but results in runtime error:

error: err (p)subscribe / (p)unsubscribe / quit allowed in context

how can publish data within hiredis?

from https://github.com/redis/hiredis in hiredis/examples/example-libevent.c:

#include <stdio.h> #include <stdlib.h> #include <string.h> #include <signal.h>  #include <hiredis.h> #include <async.h> #include <adapters/libevent.h>  void getcallback(redisasynccontext *c, void *r, void *privdata) {     redisreply *reply = r;     if (reply == null) return;     printf("argv[%s]: %s\n", (char*)privdata, reply->str);      /* disconnect after receiving reply */     redisasyncdisconnect(c); }  void connectcallback(const redisasynccontext *c, int status) {     if (status != redis_ok) {         printf("error: %s\n", c->errstr);         return;     }     printf("connected...\n"); }  void disconnectcallback(const redisasynccontext *c, int status) {     if (status != redis_ok) {         printf("error: %s\n", c->errstr);         return;     }     printf("disconnected...\n"); }  int main (int argc, char **argv) {     signal(sigpipe, sig_ign);     struct event_base *base = event_base_new();      redisasynccontext *c = redisasyncconnect("127.0.0.1", 6379);     if (c->err) {         /* let *c leak now... */         printf("error: %s\n", c->errstr);         return 1;     }      redislibeventattach(c,base);     redisasyncsetconnectcallback(c,connectcallback);     redisasyncsetdisconnectcallback(c,disconnectcallback);     redisasynccommand(c, null, null, "set key %b", argv[argc-1], strlen(argv[argc-1]));     redisasynccommand(c, getcallback, (char*)"end-1", "get key");     event_base_dispatch(base);     return 0; }