fix broken build.

Author: shogo82148

connector_go1.10.go renamed to connector_go1.8.go

@@ -6,6 +6,8 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
 // You can obtain one at http://mozilla.org/MPL/2.0/.
 
+// +build go1.8
+
 package mysql
 
 import (
@@ -67,20 +69,31 @@ func (c *Config) Connect(ctx context.Context) (driver.Conn, error) {
 	mc.writeTimeout = mc.cfg.WriteTimeout
 
 	// Reading Handshake Initialization Packet
-	cipher, err := mc.readInitPacket()
+	authData, plugin, err := mc.readHandshakePacket()
 	if err != nil {
 		mc.cleanup()
 		return nil, err
 	}
 
 	// Send Client Authentication Packet
-	if err = mc.writeAuthPacket(cipher); err != nil {
+	authResp, addNUL, err := mc.auth(authData, plugin)
+	if err != nil {
+		// try the default auth plugin, if using the requested plugin failed
+		errLog.Print("could not use requested auth plugin '"+plugin+"': ", err.Error())
+		plugin = defaultAuthPlugin
+		authResp, addNUL, err = mc.auth(authData, plugin)
+		if err != nil {
+			mc.cleanup()
+			return nil, err
+		}
+	}
+	if err = mc.writeHandshakeResponsePacket(authResp, addNUL, plugin); err != nil {
 		mc.cleanup()
 		return nil, err
 	}
 
 	// Handle response to auth packet, switch methods if possible
-	if err = handleAuthResult(mc, cipher); err != nil {
+	if err = mc.handleAuthResult(authData, plugin); err != nil {
 		// Authentication failed and MySQL has already closed the connection
 		// (https://dev.mysql.com/doc/internals/en/authentication-fails.html).
 		// Do not send COM_QUIT, just cleanup and return the error.

driver_go1.10.go

@@ -6,6 +6,8 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
 // You can obtain one at http://mozilla.org/MPL/2.0/.
 
+// +build go1.10
+
 package mysql
 
 import (

driver_go1.10_test.go

@@ -6,6 +6,8 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this file,
 // You can obtain one at http://mozilla.org/MPL/2.0/.
 
+// +build go1.10
+
 package mysql
 
 import (