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Merge pull request #191 from sruehl/feat/webtransports
feat: add support for web transports
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| package signalr | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "github.com/quic-go/webtransport-go" | ||
| "sync" | ||
| ) | ||
|
|
||
| type webTransportsConnection struct { | ||
| ConnectionBase | ||
| session *webtransport.Session | ||
|
|
||
| // current stream guarded by mutex | ||
| stream webtransport.Stream | ||
| sync.Mutex | ||
| } | ||
|
|
||
| func newWebTransportsConnection(ctx context.Context, connectionID string, session *webtransport.Session) *webTransportsConnection { | ||
| w := &webTransportsConnection{ | ||
| session: session, | ||
| ConnectionBase: *NewConnectionBase(ctx, connectionID), | ||
| } | ||
| return w | ||
| } | ||
|
|
||
| func (w *webTransportsConnection) Write(p []byte) (n int, err error) { | ||
| err = w.syncStream() | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| n, err = ReadWriteWithContext(w.Context(), | ||
| func() (int, error) { | ||
| return w.stream.Write(p) | ||
| }, | ||
| func() {}) | ||
| if err != nil { | ||
| err = fmt.Errorf("%T: %w", w, err) | ||
| _ = w.closeStream() | ||
| } | ||
| return n, err | ||
| } | ||
|
|
||
| func (w *webTransportsConnection) Read(p []byte) (n int, err error) { | ||
| err = w.syncStream() | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| n, err = ReadWriteWithContext(w.Context(), | ||
| func() (int, error) { | ||
| return w.stream.Read(p) | ||
| }, | ||
| func() {}) | ||
| if err != nil { | ||
| err = fmt.Errorf("%T: %w", w, err) | ||
| _ = w.closeStream() | ||
| } | ||
| return n, err | ||
| } | ||
|
|
||
| func (w *webTransportsConnection) syncStream() (err error) { | ||
| w.Lock() | ||
| defer w.Unlock() | ||
| if w.stream == nil { | ||
| w.stream, err = w.session.OpenStream() | ||
| } | ||
| return | ||
| } | ||
|
|
||
| func (w *webTransportsConnection) closeStream() (err error) { | ||
| w.Lock() | ||
| defer w.Unlock() | ||
| if w.stream == nil { | ||
| return nil | ||
| } | ||
| return w.stream.Close() | ||
| } |