109 lines
2.3 KiB
Go
109 lines
2.3 KiB
Go
package unisse
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import (
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"net/http"
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"sync"
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"github.com/centrifugal/centrifugo/v6/internal/tools"
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"github.com/centrifugal/centrifuge"
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)
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type eventsourceTransport struct {
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mu sync.Mutex
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req *http.Request
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ack chan struct{}
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messages chan [][]byte
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disconnectCh chan *centrifuge.Disconnect
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closedCh chan struct{}
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closed bool
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pingPongConfig centrifuge.PingPongConfig
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protoMajor int
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}
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func newEventsourceTransport(req *http.Request, pingPongConfig centrifuge.PingPongConfig, ack chan struct{}) *eventsourceTransport {
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return &eventsourceTransport{
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messages: make(chan [][]byte),
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disconnectCh: make(chan *centrifuge.Disconnect),
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closedCh: make(chan struct{}),
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req: req,
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pingPongConfig: pingPongConfig,
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protoMajor: req.ProtoMajor,
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ack: ack,
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}
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}
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const transportName = "uni_sse"
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func (t *eventsourceTransport) Name() string {
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return transportName
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}
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func (t *eventsourceTransport) Protocol() centrifuge.ProtocolType {
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return centrifuge.ProtocolTypeJSON
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}
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// ProtocolVersion returns transport protocol version.
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func (t *eventsourceTransport) ProtocolVersion() centrifuge.ProtocolVersion {
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return centrifuge.ProtocolVersion2
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}
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// Unidirectional returns whether transport is unidirectional.
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func (t *eventsourceTransport) Unidirectional() bool {
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return true
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}
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// DisabledPushFlags ...
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func (t *eventsourceTransport) DisabledPushFlags() uint64 {
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return 0
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}
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// PingPongConfig ...
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func (t *eventsourceTransport) PingPongConfig() centrifuge.PingPongConfig {
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return t.pingPongConfig
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}
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// Emulation ...
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func (t *eventsourceTransport) Emulation() bool {
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return false
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}
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// AcceptProtocol ...
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func (t *eventsourceTransport) AcceptProtocol() string {
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return tools.GetAcceptProtocolLabel(t.protoMajor)
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}
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func (t *eventsourceTransport) Write(message []byte) error {
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return t.WriteMany(message)
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}
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func (t *eventsourceTransport) WriteMany(messages ...[]byte) error {
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t.mu.Lock()
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defer t.mu.Unlock()
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if t.closed {
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return nil
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}
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select {
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case t.messages <- messages:
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case <-t.closedCh:
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}
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select {
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case <-t.ack:
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case <-t.closedCh:
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return nil
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}
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return nil
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}
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func (t *eventsourceTransport) Close(_ centrifuge.Disconnect) error {
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t.mu.Lock()
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defer t.mu.Unlock()
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if t.closed {
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return nil
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}
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t.closed = true
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close(t.disconnectCh)
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<-t.closedCh
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return nil
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}
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