160 lines
3.5 KiB
Go
160 lines
3.5 KiB
Go
package wshandler
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import (
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"encoding/base64"
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"encoding/hex"
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"io"
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"net/http"
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"strings"
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"go.mongodb.org/mongo-driver/bson/primitive"
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"repositories.action2quare.com/ayo/gocommon"
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"repositories.action2quare.com/ayo/gocommon/logger"
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"repositories.action2quare.com/ayo/gocommon/session"
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"github.com/gorilla/websocket"
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)
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type WebsocketPeerHandler struct {
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WebsocketPeerApiBroker
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sessionConsumer session.Consumer
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}
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func NewWebsocketPeerHandler(consumer session.Consumer) WebsocketPeerHandler {
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return WebsocketPeerHandler{
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sessionConsumer: consumer,
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}
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}
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func (ws *WebsocketPeerHandler) RegisterHandlers(serveMux *http.ServeMux, prefix string) error {
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url := gocommon.MakeHttpHandlerPattern(prefix, "ws")
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if *noAuthFlag {
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serveMux.HandleFunc(url, ws.upgrade_nosession)
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} else {
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serveMux.HandleFunc(url, ws.upgrade)
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}
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return nil
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}
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func (ws *WebsocketPeerHandler) upgrade_core(conn *websocket.Conn, accid primitive.ObjectID, alias string) {
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go func(c *websocket.Conn, accid primitive.ObjectID) {
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peer := ws.CreatePeer(accid)
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ws.ClientConnected(peer, c)
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var closeReason string
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for {
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messageType, r, err := c.NextReader()
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if err != nil {
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if ce, ok := err.(*websocket.CloseError); ok {
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closeReason = ce.Text
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}
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c.Close()
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break
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}
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if messageType == websocket.CloseMessage {
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closeMsg, _ := io.ReadAll(r)
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closeReason = string(closeMsg)
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break
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}
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if messageType == websocket.BinaryMessage {
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var size [1]byte
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r.Read(size[:])
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cmd := make([]byte, size[0])
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r.Read(cmd)
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ws.Call(peer, string(cmd), r)
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}
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}
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ws.ClientDisconnected(peer, closeReason)
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}(conn, accid)
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}
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func (ws *WebsocketPeerHandler) upgrade_nosession(w http.ResponseWriter, r *http.Request) {
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// 클라이언트 접속
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defer func() {
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s := recover()
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if s != nil {
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logger.Error(s)
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}
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io.Copy(io.Discard, r.Body)
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r.Body.Close()
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}()
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auth := strings.Split(r.Header.Get("Authorization"), " ")
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if len(auth) != 2 {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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temp, err := hex.DecodeString(auth[1])
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if err != nil {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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if len(temp) != len(primitive.NilObjectID) {
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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raw := (*[12]byte)(temp)
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accid := primitive.ObjectID(*raw)
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var upgrader = websocket.Upgrader{} // use default options
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conn, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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var alias string
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if v := r.Header.Get("AS-X-ALIAS"); len(v) > 0 {
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vt, _ := base64.StdEncoding.DecodeString(v)
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alias = string(vt)
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} else {
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alias = accid.Hex()
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}
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ws.upgrade_core(conn, accid, alias)
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}
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func (ws *WebsocketPeerHandler) upgrade(w http.ResponseWriter, r *http.Request) {
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// 클라이언트 접속
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defer func() {
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s := recover()
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if s != nil {
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logger.Error(s)
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}
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io.Copy(io.Discard, r.Body)
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r.Body.Close()
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}()
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sk := r.Header.Get("AS-X-SESSION")
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logger.Println("WebsocketHandler.upgrade sk :", sk)
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authinfo, err := ws.sessionConsumer.Query(sk)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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logger.Error("authorize query failed :", err)
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return
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}
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var upgrader = websocket.Upgrader{} // use default options
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conn, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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var alias string
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if v := r.Header.Get("AS-X-ALIAS"); len(v) > 0 {
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vt, _ := base64.StdEncoding.DecodeString(v)
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alias = string(vt)
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} else {
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alias = authinfo.Account.Hex()
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}
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ws.upgrade_core(conn, authinfo.Account, alias)
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}
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