67 lines
2.0 KiB
Go
67 lines
2.0 KiB
Go
// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-present Vikunja and contributors. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package websocket
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import (
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"context"
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"net/http"
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"code.vikunja.io/api/pkg/config"
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"code.vikunja.io/api/pkg/log"
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"github.com/coder/websocket"
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"github.com/labstack/echo/v5"
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)
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var globalHub *Hub
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// InitHub creates the global hub. Must be called once at startup.
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func InitHub() {
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globalHub = NewHub()
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}
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// GetHub returns the global hub.
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func GetHub() *Hub {
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return globalHub
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}
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// UpgradeHandler is the Echo handler for WebSocket upgrades at /api/v1/ws.
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// The upgrade happens without authentication - auth is done via the first message.
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func UpgradeHandler(c *echo.Context) error {
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if globalHub == nil {
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log.Errorf("WebSocket: hub not initialized")
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return echo.NewHTTPError(http.StatusServiceUnavailable, "WebSocket hub not initialized")
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}
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ws, err := websocket.Accept(c.Response(), c.Request(), &websocket.AcceptOptions{
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OriginPatterns: config.CorsOrigins.GetStringSlice(),
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})
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if err != nil {
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log.Errorf("WebSocket: upgrade failed: %v", err)
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return nil // Accept already wrote the error response
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}
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conn := NewConnection(ws, globalHub)
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ctx, cancel := context.WithCancel(context.Background())
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go conn.WriteLoop(ctx, cancel)
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go conn.ReadLoop(ctx, cancel)
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return nil
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}
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