int redisReaderGetReply(redisReader *r, void **reply) error

[yanrbts]

int redisReaderGetReply(redisReader *r, void **reply) if (sdsrange(r->buf,r->pos,-1) < 0) {} after judging that the link is successful, execute hscan and return null

[michael-grunder]

I don't follow. What is the issue?

[yanrbts]

My program restarts the redis connection and executes a command similar to HSCAN filekey:fileuuis 0 match trace:* count 10. The data is successfully traversed for the first time. When the program exits and restarts the second traversal, reply=NULL is returned. The problem lies in the code I mentioned above.

[yanrbts]

My program restarts the redis connection and executes a command similar to HSCAN filekey:fileuuis 0 match trace:* count 10. The data is successfully traversed for the first time. When the program exits and restarts the second traversal, reply=NULL is returned. The problem lies in the code I mentioned above.

[yanrbts]

/* Discard part of the buffer when we've consumed at least 1k, to avoid
 * doing unnecessary calls to memmove() in sds.c. */
// if (r->pos >= 1024) {
//     if (sdsrange(r->buf,r->pos,-1) < 0) {
//         printf("get reply sdsrange < 0\n");
//         return REDIS_ERR;
//     }
//     r->pos = 0;
//     r->len = sdslen(r->buf);
// }  Comment out this code and it will be fine