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Update README.md for OpenSSL issuses #133

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Expand Up @@ -308,6 +308,30 @@ To get the blid and password from the cloud run:
```
Where `<login>` and `<password>` are your iRobot account login and password. Results are displayed and saved to the config file.

## Working around OpenSSL issues
On modern Linux systems you might get OpenSSL errors `UNSAFE_LEGACY_RENEGOTIATION_DISABLED` or `DH_KEY_TOO_SMALL`.
Create an openssl config file:
```
openssl_conf = openssl_init

[openssl_init]
ssl_conf = ssl_sect

[ssl_sect]
system_default = system_default_sect

[system_default_sect]
Options = UnsafeLegacyRenegotiation
MinProtocol = TLSv1
CipherString = DEFAULT:@SECLEVEL=1
```
Then use this config file when e.g. fetching the password:

```
export OPENSSL_CONF=/home/ruben/projects/2024/1225-roomba/openssl.conf
./getpassword.py <ipaddress>
```

## config.ini
By default, all settings are stored in the *config.ini* file. You can change this file if you like (but there is really no need).
An exaple file *config_example.ini* is given to show the structure of the file. It is a standard `ini` file with each section being the ip address of each robot.
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