GitProtogen
108 lines
2.5 KiB
Go
108 lines
2.5 KiB
Go
package main
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import (
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"context"
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"errors"
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"log"
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"net/http"
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"time"
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"github.com/coder/websocket"
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"github.com/coder/websocket/wsjson"
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)
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func ServeWsConnection(responseWriter http.ResponseWriter, request *http.Request) {
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connection, err := websocket.Accept(responseWriter, request, &websocket.AcceptOptions{
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InsecureSkipVerify: true,
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})
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if err != nil {
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log.Printf("websocket accept error: %v", err)
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return
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}
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ctx, cancel := context.WithTimeout(context.Background(), time.Second*30)
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defer cancel()
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client := Client{}
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for {
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var clientMessage map[string]any
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err := wsjson.Read(ctx, connection, &clientMessage)
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if err != nil {
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log.Printf("read error: %clientMessage", err)
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return
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}
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if len(clientMessage) > 0 {
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if client.IsAuthenticated {
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handleAuthenticatedMessage(connection, &client, &clientMessage)
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} else {
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if !handleUnauthenticatedMessage(connection, &client, &clientMessage) {
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closeConnection(connection)
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return
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}
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}
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}
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}
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}
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func sendMessageCloseIfTimeout(conn *websocket.Conn, message *map[string]any) {
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ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
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defer cancel()
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err := wsjson.Write(ctx, conn, message)
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if err != nil {
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if errors.Is(err, context.DeadlineExceeded) {
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closeConnection(conn)
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}
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log.Printf("write error: %v", err)
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}
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}
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func handleUnauthenticatedMessage(conn *websocket.Conn, client *Client, message *map[string]any) bool {
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token, ok := (*message)["token"].(string)
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if !ok {
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var errmsg = map[string]any{
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"type": WsServerResponse(BadMessage),
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"message": "token required",
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}
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sendMessageCloseIfTimeout(conn, &errmsg)
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return false
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}
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clientId, err := GetClientIdFromToken(token)
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if err != nil {
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var errmsg = map[string]any{
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"type": WsServerResponse(InvalidCredentials),
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"message": "bad token",
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}
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sendMessageCloseIfTimeout(conn, &errmsg)
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return false
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}
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client, err = GetClientFromId(clientId)
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if err != nil {
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var errmsg = map[string]any{
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"type": WsServerResponse(InvalidCredentials),
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"message": "bad token",
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}
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sendMessageCloseIfTimeout(conn, &errmsg)
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return false
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}
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client.IsAuthenticated = true
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return true
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}
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func handleAuthenticatedMessage(conn *websocket.Conn, client *Client, message *map[string]any) {
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for _, sendTo := range clients {
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if sendTo.IsAuthenticated && sendTo.Id != client.Id {
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sendMessageCloseIfTimeout(conn, message)
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}
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}
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}
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func closeConnection(conn *websocket.Conn) {
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conn.Close(websocket.StatusNormalClosure, "closing connection")
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}
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