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conn_handshake.go
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/
conn_handshake.go
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// Licensed to ClickHouse, Inc. under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. ClickHouse, Inc. licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package proton
import (
"fmt"
"time"
"github.com/timeplus-io/proton-go-driver/v2/lib/proto"
)
func (c *connect) handshake(database, username, password string) error {
c.debugf("[handshake] -> %s", proto.ClientHandshake{})
c.conn.SetDeadline(time.Now().Add(c.opt.DialTimeout))
defer c.conn.SetDeadline(time.Time{})
{
c.encoder.Byte(proto.ClientHello)
if err := (&proto.ClientHandshake{}).Encode(c.encoder); err != nil {
return err
}
{
if err := c.encoder.String(database); err != nil {
return err
}
if err := c.encoder.String(username); err != nil {
return err
}
if err := c.encoder.String(password); err != nil {
return err
}
}
if err := c.encoder.Flush(); err != nil {
return err
}
}
{
packet, err := c.decoder.ReadByte()
if err != nil {
return err
}
switch packet {
case proto.ServerException:
return c.exception()
case proto.ServerHello:
if err := c.server.Decode(c.decoder); err != nil {
return err
}
case proto.ServerEndOfStream:
c.debugf("[handshake] <- end of stream")
return nil
default:
return fmt.Errorf("[handshake] unexpected packet [%d] from server", packet)
}
}
if c.server.Revision < proto.DBMS_MIN_REVISION_WITH_CLIENT_INFO {
return ErrUnsupportedServerRevision
}
if c.revision > c.server.Revision {
c.revision = c.server.Revision
c.debugf("[handshake] downgrade client proto")
}
c.debugf("[handshake] <- %s", c.server)
return nil
}
func (c *connect) sendAddendum() error {
if c.revision >= proto.DBMS_MIN_PROTOCOL_VERSION_WITH_QUOTA_KEY {
if err := c.encoder.String(""); err != nil {
return err
}
}
return c.encoder.Flush()
}