mirror of
https://github.com/gravitational/teleport
synced 2024-10-20 09:13:39 +00:00
59 lines
1.4 KiB
Go
59 lines
1.4 KiB
Go
/*
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Copyright 2021 Gravitational, 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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http://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 web
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import (
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"github.com/gorilla/websocket"
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"github.com/gravitational/trace"
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)
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type WebsocketIO struct {
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Conn *websocket.Conn
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remaining []byte
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}
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func (ws *WebsocketIO) Write(p []byte) (int, error) {
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err := ws.Conn.WriteMessage(websocket.BinaryMessage, p)
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if err != nil {
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return 0, trace.Wrap(err)
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}
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return len(p), nil
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}
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func (ws *WebsocketIO) Read(p []byte) (int, error) {
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if len(ws.remaining) == 0 {
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ty, data, err := ws.Conn.ReadMessage()
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if err != nil {
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return 0, trace.Wrap(err)
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}
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if ty != websocket.BinaryMessage {
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return 0, trace.BadParameter("expected websocket message of type BinaryMessage, got %T", ty)
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}
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ws.remaining = data
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}
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copied := copy(p, ws.remaining)
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ws.remaining = ws.remaining[copied:]
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return copied, nil
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}
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func (ws *WebsocketIO) Close() error {
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return trace.Wrap(ws.Conn.Close())
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}
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