Go Version: 1.12.5

I have this code which uses the node.js mongo driver

const MongoClient = require('mongodb').MongoClient;
const uri = process.env.MONGO_HOST + "dbname?retryWrites=true";
const client = new MongoClient(uri,

{ useNewUrlParser: true }

);

client.connect(async (err) => {
if (err)

{ throw err }

const collection = client.db("dbname").collection("collectionName");
const cursor = collection.find()
await cursor.forEach(console.log)
// perform actions on the collection object
client.close();
});

Which works fine.

Using the `mongo-go-driver`, I do:

client, err := mongo.NewClient(options.Client().ApplyURI(os.Getenv("MONGO_HOST") + "dbname?retryWrites=true")
if err != nil

{ panic(err) }
ctx, _ := context.WithTimeout(context.Background(), 10*time.Second)
err = client.Connect(ctx)
if err != nil { panic(err) }

database := client.Database("dbname")
collection := database.Collection("collectionName")

res, err := collection.Find(context.Background(), bson.M{}, &options.FindOptions{
Sort: bson.M

{ "priority": -1, }

,
})
if err != nil

{ panic(err) }
results := make([]structs.ResponseType, 0)
err = res.All(context.Background(), &results)
if err != nil { panic(err) }

But this panics with:

panic: server selection error: server selection timeout
current topology: Type: ReplicaSetNoPrimary

I am not running this inside a container/docker.