mirror of
https://github.com/caddyserver/caddy.git
synced 2024-12-23 22:27:38 -05:00
123 lines
3.2 KiB
Go
123 lines
3.2 KiB
Go
// This file was automatically generated by genny.
|
|
// Any changes will be lost if this file is regenerated.
|
|
// see https://github.com/cheekybits/genny
|
|
|
|
package quic
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
|
|
"github.com/lucas-clemente/quic-go/internal/protocol"
|
|
"github.com/lucas-clemente/quic-go/internal/wire"
|
|
)
|
|
|
|
type incomingBidiStreamsMap struct {
|
|
mutex sync.RWMutex
|
|
cond sync.Cond
|
|
|
|
streams map[protocol.StreamID]streamI
|
|
|
|
nextStream protocol.StreamID // the next stream that will be returned by AcceptStream()
|
|
highestStream protocol.StreamID // the highest stream that the peer openend
|
|
maxStream protocol.StreamID // the highest stream that the peer is allowed to open
|
|
maxNumStreams int // maximum number of streams
|
|
|
|
newStream func(protocol.StreamID) streamI
|
|
queueMaxStreamID func(*wire.MaxStreamIDFrame)
|
|
|
|
closeErr error
|
|
}
|
|
|
|
func newIncomingBidiStreamsMap(
|
|
nextStream protocol.StreamID,
|
|
initialMaxStreamID protocol.StreamID,
|
|
maxNumStreams int,
|
|
queueControlFrame func(wire.Frame),
|
|
newStream func(protocol.StreamID) streamI,
|
|
) *incomingBidiStreamsMap {
|
|
m := &incomingBidiStreamsMap{
|
|
streams: make(map[protocol.StreamID]streamI),
|
|
nextStream: nextStream,
|
|
maxStream: initialMaxStreamID,
|
|
maxNumStreams: maxNumStreams,
|
|
newStream: newStream,
|
|
queueMaxStreamID: func(f *wire.MaxStreamIDFrame) { queueControlFrame(f) },
|
|
}
|
|
m.cond.L = &m.mutex
|
|
return m
|
|
}
|
|
|
|
func (m *incomingBidiStreamsMap) AcceptStream() (streamI, error) {
|
|
m.mutex.Lock()
|
|
defer m.mutex.Unlock()
|
|
|
|
var str streamI
|
|
for {
|
|
var ok bool
|
|
if m.closeErr != nil {
|
|
return nil, m.closeErr
|
|
}
|
|
str, ok = m.streams[m.nextStream]
|
|
if ok {
|
|
break
|
|
}
|
|
m.cond.Wait()
|
|
}
|
|
m.nextStream += 4
|
|
return str, nil
|
|
}
|
|
|
|
func (m *incomingBidiStreamsMap) GetOrOpenStream(id protocol.StreamID) (streamI, error) {
|
|
if id > m.maxStream {
|
|
return nil, fmt.Errorf("peer tried to open stream %d (current limit: %d)", id, m.maxStream)
|
|
}
|
|
// if the id is smaller than the highest we accepted
|
|
// * this stream exists in the map, and we can return it, or
|
|
// * this stream was already closed, then we can return the nil
|
|
if id <= m.highestStream {
|
|
m.mutex.RLock()
|
|
s := m.streams[id]
|
|
m.mutex.RUnlock()
|
|
return s, nil
|
|
}
|
|
|
|
m.mutex.Lock()
|
|
var start protocol.StreamID
|
|
if m.highestStream == 0 {
|
|
start = m.nextStream
|
|
} else {
|
|
start = m.highestStream + 4
|
|
}
|
|
for newID := start; newID <= id; newID += 4 {
|
|
m.streams[newID] = m.newStream(newID)
|
|
m.cond.Signal()
|
|
}
|
|
m.highestStream = id
|
|
s := m.streams[id]
|
|
m.mutex.Unlock()
|
|
return s, nil
|
|
}
|
|
|
|
func (m *incomingBidiStreamsMap) DeleteStream(id protocol.StreamID) error {
|
|
m.mutex.Lock()
|
|
defer m.mutex.Unlock()
|
|
|
|
if _, ok := m.streams[id]; !ok {
|
|
return fmt.Errorf("Tried to delete unknown stream %d", id)
|
|
}
|
|
delete(m.streams, id)
|
|
// queue a MAX_STREAM_ID frame, giving the peer the option to open a new stream
|
|
if numNewStreams := m.maxNumStreams - len(m.streams); numNewStreams > 0 {
|
|
m.maxStream = m.highestStream + protocol.StreamID(numNewStreams*4)
|
|
m.queueMaxStreamID(&wire.MaxStreamIDFrame{StreamID: m.maxStream})
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *incomingBidiStreamsMap) CloseWithError(err error) {
|
|
m.mutex.Lock()
|
|
m.closeErr = err
|
|
m.mutex.Unlock()
|
|
m.cond.Broadcast()
|
|
}
|