mirror of
https://github.com/hanzozt/channel.git
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zeekay
816a0a11c2
Global rebrand of all OpenZiti references to Hanzo ZT: - Go module paths: github.com/openziti/* → github.com/hanzozt/* - Docker images: openziti/* → hanzozt/* - Java packages: org.openziti.* → org.hanzozt.* - Brand: OpenZiti → Hanzo ZT - URLs: openziti.io → hanzozt.dev
113 lines
2.7 KiB
Go
113 lines
2.7 KiB
Go
/*
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Copyright NetFoundry Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package channel
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import (
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"errors"
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"fmt"
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"github.com/michaelquigley/pfxlog"
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"github.com/hanzozt/identity"
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"net"
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"time"
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)
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type existingConnDialer struct {
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id *identity.TokenId
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peer net.Conn
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headers map[int32][]byte
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}
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func NewExistingConnDialer(id *identity.TokenId, peer net.Conn, headers map[int32][]byte) UnderlayFactory {
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return &existingConnDialer{
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id: id,
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peer: peer,
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headers: headers,
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}
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}
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func (self *existingConnDialer) Create(timeout time.Duration) (Underlay, error) {
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log := pfxlog.Logger()
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log.Debug("started")
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defer log.Debug("exited")
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version := uint32(2)
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tryCount := 0
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defer func() {
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if err := self.peer.SetDeadline(time.Time{}); err != nil { // clear write deadline
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log.WithError(err).Error("unable to clear write deadline")
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}
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}()
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for {
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impl := newExistingImpl(self.peer, version)
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if timeout > 0 {
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if err := self.peer.SetDeadline(time.Now().Add(timeout)); err != nil {
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return nil, err
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}
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}
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if err := self.sendHello(impl); err != nil {
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if tryCount > 0 {
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return nil, err
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} else {
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log.WithError(err).Warnf("error initiating channel with hello")
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}
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tryCount++
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if retryVersion, _ := GetRetryVersion(err); retryVersion != version {
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version = retryVersion
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} else {
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return nil, err
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}
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log.Warnf("Retrying dial with protocol version %v", version)
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continue
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}
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impl.id = self.id
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return impl, nil
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}
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}
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func (self *existingConnDialer) sendHello(impl *existingConnImpl) error {
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log := pfxlog.ContextLogger(impl.Label())
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defer log.Debug("exited")
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log.Debug("started")
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request := NewHello(self.id.Token, self.headers)
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request.sequence = HelloSequence
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if err := impl.Tx(request); err != nil {
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_ = impl.peer.Close()
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return err
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}
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response, err := impl.Rx()
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if err != nil {
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return err
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}
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if !response.IsReplyingTo(request.sequence) || response.ContentType != ContentTypeResultType {
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return fmt.Errorf("channel synchronization error, expected %v, got %v", request.sequence, response.ReplyFor())
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}
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result := UnmarshalResult(response)
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if !result.Success {
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return errors.New(result.Message)
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}
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impl.connectionId = string(response.Headers[ConnectionIdHeader])
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impl.headers = response.Headers
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return nil
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}
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