Connect via TCP

fixes #15

connection.go

@@ -12,6 +12,8 @@ import (
 
 type ConnectionParameters struct {
 	socket   string // path to unix domain socket (e.g. /private/tmp/.s.PGSQL.5432)
+	host     string
+	port     uint16 // default: 5432
 	database string
 	user     string
 	password string
@@ -27,28 +29,29 @@ type Connection struct {
 	txStatus      byte
 }
 
-// options:
+func Connect(parameters ConnectionParameters) (c *Connection, err error) {
-//   socket: path to unix domain socket
-//   host: TCP address
-//   port:
-//   database: name of database
-func Connect(paramaters ConnectionParameters) (c *Connection, err error) {
 	c = new(Connection)
 
-	c.parameters = paramaters
+	c.parameters = parameters
+	if c.parameters.port == 0 {
+		c.parameters.port = 5432
+	}
 
 	if c.parameters.socket != "" {
 		c.conn, err = net.Dial("unix", c.parameters.socket)
 		if err != nil {
 			return nil, err
 		}
+	} else if c.parameters.host != "" {
+		c.conn, err = net.Dial("tcp", fmt.Sprintf("%s:%d", c.parameters.host, c.parameters.port))
+		if err != nil {
+			return nil, err
+		}
 	}
 
 	c.buf = make([]byte, 1024)
 	c.runtimeParams = make(map[string]string)
 
-	// conn, err := net.Dial("tcp", "localhost:5432")
-
 	msg := newStartupMessage()
 	msg.options["user"] = c.parameters.user
 	if c.parameters.database != "" {

connection_test.go

@@ -53,6 +53,18 @@ func TestConnect(t *testing.T) {
 	}
 }
 
+func TestConnectWithTcp(t *testing.T) {
+	conn, err := Connect(ConnectionParameters{host: "127.0.0.1", user: "pgx_md5", password: "secret", database: "pgx_test"})
+	if err != nil {
+		t.Fatal("Unable to establish connection: " + err.Error())
+	}
+
+	err = conn.Close()
+	if err != nil {
+		t.Fatal("Unable to close connection")
+	}
+}
+
 func TestConnectWithInvalidUser(t *testing.T) {
 	_, err := Connect(ConnectionParameters{socket: "/private/tmp/.s.PGSQL.5432", user: "invalid_user", database: "pgx_test"})
 	pgErr := err.(PgError)