Function anetRecvTimeout

app/redis-6.2.6/src/anet.c:215–225

Set the socket receive timeout (SO_RCVTIMEO socket option) to the specified * number of milliseconds, or disable it if the 'ms' argument is zero. */

/* Set the socket receive timeout (SO_RCVTIMEO socket option) to the specified
 * number of milliseconds, or disable it if the 'ms' argument is zero. */
int anetRecvTimeout(char *err, int fd, long long ms) {
    struct timeval tv;

    tv.tv_sec = ms/1000;
    tv.tv_usec = (ms%1000)*1000;
    if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) == -1) {
        anetSetError(err, "setsockopt SO_RCVTIMEO: %s", strerror(errno));
        return ANET_ERR;
    }
    return ANET_OK;
}

/* Resolve the hostname "host" and set the string representation of the
 * IP address into the buffer pointed by "ipbuf".