[kamailio/kamailio] db_redis: compile issues with TLS + redis-cluster (Issue #3893) - sr-dev

26 Jun 2024

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### Description

Hello, I am trying to setup db_redis with TLS and redis-cluster support, I get the
following errors during installation.

### Troubleshooting

#### Reproduction
Install hiredis(v1.2.0) and hiredis-cluster(v0.13.0) from source, both with ssl support.
Then install kamailio 5.8.1 from source with db_redis module

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#### Log Messages

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```
37.77 CC (gcc) [M db_redis.so]		db_redis_mod.o
37.85 CC (gcc) [M db_redis.so]		redis_connection.o
37.90 redis_connection.c: In function 'db_redis_connect':
37.90 redis_connection.c:129:9: error: unknown type name 'redisSSLContext'; did
you mean 'redisContext'?
37.90   129 |         redisSSLContext *ssl = NULL;
37.90       |         ^~~~~~~~~~~~~~~
37.90       |         redisContext
37.90 redis_connection.c:166:17: warning: implicit declaration of function
'redisInitOpenSSL' [-Wimplicit-function-declaration]
37.90   166 |                 redisInitOpenSSL();
37.90       |                 ^~~~~~~~~~~~~~~~
37.90 redis_connection.c:167:23: warning: implicit declaration of function
'redisCreateSSLContext' [-Wimplicit-function-declaration]
37.90   167 |                 ssl = redisCreateSSLContext(
37.90       |                       ^~~~~~~~~~~~~~~~~~~~~
37.90 redis_connection.c:167:21: warning: assignment to 'int *' from 'int'
makes pointer from integer without a cast [-Wint-conversion]
37.90   167 |                 ssl = redisCreateSSLContext(
37.90       |                     ^
37.91 redis_connection.c:196:17: warning: implicit declaration of function
'redisClusterSetOptionEnableSSL'; did you mean
'redisClusterSetOptionMaxRetry'? [-Wimplicit-function-declaration]
37.91   196 |                 redisClusterSetOptionEnableSSL(con->con, ssl);
37.91       |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
37.91       |                 redisClusterSetOptionMaxRetry
37.93 make[2]: *** [../../Makefile.rules:100: redis_connection.o] Error 1
37.93 make[1]: *** [Makefile:508: modules] Error 1
37.93 make[1]: Leaving directory '/root/build/kamailio/src'
37.93 make: *** [Makefile:34: all] Error 2
```

### Additional Information

  * **Kamailio Version**:

```
Kamailio 5.8.1
```

* **Operating System**: 

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```
Debian 12
```

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