Hi. Mongodb allows quering port from DNS SRV record by using mongodb+srv connection url string.

However, the service name is _always_ `_mongdb._tcp`, which prevents from running multiple mongodb service instances in the same domain.  https://github.com/mongodb/mongo/blob/master/src/mongo/client/mongo_uri.cpp#L428

Please add a setting to specify the service name to connect to for example using query url, like the following:

mongsh mongodb+srv://example.com?service=mongodb

mongsh mongodb+srv://example.com?service=custom-service-name

mongsh mongodb+srv://example.com?service=custom-service-name,tag=customtag

That will connect to `_mongodb._tcp.example.com` or `_custom-service-name._tcp.example.com` and `_custom-service-name,_customtag.example.com` respectively.

Thank you.

This is my first issue, I do not know to which topic to categorize it to. I tried searching the answer and found out the connection string is hardcoded. I tried searching existing issues , but I was not able to find a similar issue, I found somewhat related issues, like https://jira.mongodb.org/browse/SERVER-39008?jql=text%20~%20%22SRV%20domains%22 , https://jira.mongodb.org/browse/PYTHON-3630?jql=text%20~%20%22SRV%20domains%22 , https://jira.mongodb.org/browse/DOCS-12574 m https://jira.mongodb.org/browse/SERVER-39008 .