Unable to create session connecting to Cassandra

I am using this gocql package.

I am trying to get this example working.

func main() {
// connect to the cluster
cluster := gocql.NewCluster("192.168.1.1", "192.168.1.2", "192.168.1.3")
cluster.ProtoVersion = 3
cluster.Keyspace = "example"
cluster.Consistency = gocql.Quorum
session, err := cluster.CreateSession()
defer session.Close()
if err != nil {
fmt.Printf("%v\n", err)
return
}
uuid := gocql.TimeUUID()
fmt.Printf("UUID : %v", uuid)
query := session.Query(`INSERT INTO tweet (timeline, id, text) VALUES         
(?, ?, ?)`, "me", uuid, "hello world")
fmt.Println("About to exec")
err = query.Exec()
// insert a tweet
if err != nil {
log.Fatal(err)
}
var id gocql.UUID
var text string
/* Search for a specific set of records whose 'timeline' column matches
* the value 'me'. The secondary index that we created earlier will be
* used for optimizing the search */
if err := session.Query(`SELECT id, text FROM tweet WHERE timeline = ?     
LIMIT 1`,"me").Consistency(gocql.One).Scan(&id, &text); err != nil {
log.Fatal(err)
}
fmt.Println("Tweet:", id, text)
// list all tweets
iter := session.Query(`SELECT id, text FROM tweet WHERE timeline = ?`, 
"me").Iter()
for iter.Scan(&id, &text) {
fmt.Println("Tweet:", id, text)
}
if err := iter.Close(); err != nil {
log.Fatal(err)
}
}

Using the Cassandra shell I have created the keyspace "example" and the table "tweet" and they all work fine.

However, when I run the program, it gives me this error:

2017/04/14 20:52:55 gocql: unable to dial control conn 192.168.1.3: dial tcp     
192.168.1.3:9042: i/o timeout
gocql: unable to create session: control: unable to connect to initial 
hosts: dial tcp 192.168.1.3:9042: i/o timeoutpanic: runtime error: invalid 
memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x0 pc=0x60236d]
goroutine 1 [running]:
github.com/gocql/gocql.(*Session).Close(0x0)
/home/mda/.local/go/src/github.com/gocql/gocql/session.go:344 +0x2d

For some reason, gocql is unable to dial the localhost connection, and it times out. I am not sure how to fix this and a stackoverflow and google search hasn't helped so far.

Any ideas?

Looks like the ip addresses are not according to the cluster situation on your computer. After giving me the nodetool status I think you should update the cluster := gocql.NewCluster to have just the 127.0.0.1 address and not the addresses from example.

I think in reality you are just running single node cassandra local instance. Which is fine for development.

Basically:

cluster := gocql.NewCluster("127.0.0.1")

and just drop this line all together

cluster.ProtoVersion = 3