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Merge pull request #30 from wirepair/try_new_websocket_lib
Try new websocket lib
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| package gcd | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "fmt" | ||
| "io" | ||
| "net" | ||
| "net/url" | ||
| "time" | ||
|
|
||
| "github.com/gobwas/ws" | ||
| "github.com/gobwas/ws/wsutil" | ||
| ) | ||
|
|
||
| const writeSize = 15000000 // 15mb | ||
|
|
||
| // adapted from https://github.com/chromedp/chromedp/blob/8e0a16689423d48d8907c62a543c7ea468059228/conn.go | ||
| type wsConn struct { | ||
| conn net.Conn | ||
| writer wsutil.Writer | ||
| } | ||
|
|
||
| func newWsConnDial(ctx context.Context, url string) (*wsConn, error) { | ||
| wconn := &wsConn{} | ||
| conn, br, _, err := ws.Dial(ctx, url) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if br != nil { | ||
| panic("br should be nil") | ||
| } | ||
| wconn.conn = conn | ||
| wconn.writer = *wsutil.NewWriterBufferSize(conn, ws.StateClientSide, ws.OpText, 1<<20) | ||
| return wconn, nil | ||
| } | ||
|
|
||
| func formatURL(toFormat string) string { | ||
| u, err := url.Parse(toFormat) | ||
| if err != nil { | ||
| return "" | ||
| } | ||
| host, port, err := net.SplitHostPort(u.Host) | ||
| if err != nil { | ||
| return "" | ||
| } | ||
| addr, err := net.ResolveIPAddr("ip", host) | ||
| if err != nil { | ||
| return "" | ||
| } | ||
| u.Host = net.JoinHostPort(addr.IP.String(), port) | ||
| return u.String() | ||
| } | ||
|
|
||
| func (c *wsConn) Read(ctx context.Context, msg *[]byte) error { | ||
| // get websocket reader | ||
| c.conn.SetReadDeadline(time.Now().Add(10 * time.Second)) | ||
| reader := wsutil.NewReader(c.conn, ws.StateClientSide) | ||
| h, err := reader.NextFrame() | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| if h.OpCode == ws.OpClose { | ||
| return io.EOF | ||
| } | ||
|
|
||
| if h.OpCode != ws.OpText { | ||
| return fmt.Errorf("InvalidWebsocketMessage") | ||
| } | ||
|
|
||
| var b bytes.Buffer | ||
| if _, err := b.ReadFrom(reader); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| *msg = b.Bytes() | ||
| return nil | ||
| } | ||
|
|
||
| // Write writes a message. | ||
| func (c *wsConn) Write(_ context.Context, msg []byte) error { | ||
| c.writer.Reset(c.conn, ws.StateClientSide, ws.OpText) | ||
| if _, err := c.writer.Write(msg); err != nil { | ||
| return err | ||
| } | ||
| return c.writer.Flush() | ||
| } | ||
|
|
||
| func (c *wsConn) Close() error { | ||
| return c.Close() | ||
| } |