mysql: MySQL 5.7 Aborted Connection - Got an error reading communication packets

Issue description

The connection to MySQL should open. However, opening this connection in Golang, results in the error (Got an error reading communication packets). Opening the MySQL connection from the cli works.

Tried:

• Increasing the wait_time
• Increasing the connection_time
• Increasing the max packet size

Example code

func open_mysql(Host *string, Username *string, Password *string, Database *string, parameters string) *sql.DB {
	open, err := sql.Open("mysql", *Username+":"+*Password+"@tcp("+*Host+")/"+*Database+parameters)

	if err != nil {
		log.Printf("%s\n", err)
	}
	return open
}

Error log

[Note] Aborted connection 13086 to db: '<redacted>' user: '<redacted>' host: '<redacted but not localhost, outside network connection>' (Got an error reading communication packets)

Configuration

Driver version (or git SHA): latest pull from go get -u github.com/go-sql-driver/mysql as of today.

Go version: go version go1.7.5 darwin/amd64 AND go version go1.8 darwin/amd64

Server version: Server version: 5.7.17-0ubuntu0.16.04.1 (Ubuntu)

Server OS: Ubuntu 16.04.1