Register mongodb+srv scheme

[shiwano]

Hi,

mongodb+srv:// is available as MongoDB URL's scheme, so I added.

See also: https://docs.mongodb.com/manual/reference/connection-string/#dns-seedlist-connection-format

[coveralls]

Pull Request Test Coverage Report for Build 768

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 53.467%

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Totals
Change from base Build 764:	0.02%
Covered Lines:	2614
Relevant Lines:	4889

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💛 - Coveralls

[dhui]

Adding +srv without fully supporting the differences in behavior is misleading.

At a quick glance, it looks like the following behaviors are different:

1. Uses SRV DNS record as seedlist
2. Enables tls/ssl

[shiwano]

Thanks for your confirmation!

I understood what you say.
I've added docs URL to README for now.

But support for the mongodb+srv scheme is done transparently by the go.mongodb.org/mongo-driver package, so I don't think I need to add a new implementation.
In fact, I've been using this configuration to operate MongoDB Atlas, and I haven't got any problems now.

Could you tell me what other changes we need to make to this PR? 🙏

[dhui]

Ahh, didn't realize that the Mongo DB driver passed the URI straight through to create the db driver!

[u007]

tested the master branch, it gives dns error on lookup mongo+srv://