redis c pubsub

redis_pubsub.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <hiredis.h>

int main(int argc, char **argv) {
    unsigned int j;
    redisContext *conn;
    redisReply *reply;
    const char *hostname = (argc > 1) ? argv[1] : "127.0.0.1";
    int port = (argc > 2) ? atoi(argv[2]) : 6379;

    struct timeval timeout = { 1, 500000 }; // 1.5 seconds
    conn = redisConnectWithTimeout(hostname, port, timeout);
    if (conn == NULL || conn->err) {
        if (conn) {
            printf("Connection error: %s\n", conn->errstr);
            redisFree(conn);
        } else {
            printf("Connection error: can't allocate redis context\n");
        }
        exit(1);
    }

    reply = redisCommand(conn,"PUBLISH foo hello");
    printf("PUBLISH: %s\n", reply->str);
    freeReplyObject(reply);

    /* Disconnects and frees the context */
    redisFree(conn);

    return 0;
}