r - 无法从 R 连接到 Mongo DB：身份验证失败

Question

mongo -u User -p pass --port 2551 -authenticationDatabase=db
MongoDB shell version: 3.0.3
connecting to: 127.0.0.1:2551/test
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使用相同的用户名和密码，我在 R 中遇到了身份验证问题。

> library(rmongodb)
> mongo <- mongo.create(host="<host>:2551", name="", username ="User", password = "pass", db="db")
Authentication failed.
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