Merge acceptallorigins into master and update README

README.md

@@ -1,7 +1,8 @@
 # 🔀 Archat
-*It is not working application yet, work in progress!*
+*This application in in alpha stage, some features may not be working correctly or there may be bugs*
 
-Simple P2P server (and client - for testing purposes only, client for end user will be written in NodeJS using Electron, soon).
+Simple P2P server (and client - for testing purposes only, client for end user is written in Electron - you can
+get it [there](https://github.com/DamianLaczynski/archat-client).
 
 ## Starting
 You can use these commands to start client and/or server:

client/client.go

@@ -23,7 +23,8 @@ import (
 )
 
 type InitiationInfo struct {
-	otherSideNick string
+	otherSideNick  string
+	punchLaddrUsed *net.UDPAddr
 }
 
 type Context struct {
@@ -144,12 +145,23 @@ func (cliCtx *Context) handleStartChatD(reqFrame cm.RFrame) (res cm.Response, er
 		return nil, nil
 	}
 
-	conn, err := net.Dial("udp", cliCtx.settings.UdpAddr)
+	raddr, err := net.ResolveUDPAddr("udp", cliCtx.settings.UdpAddr)
+	if err != nil {
+		logger.Error(err)
+		return nil, nil
+	}
+
+	conn, err := net.DialUDP("udp", nil, raddr)
+	defer func() {
+		conn.Close()
+		logger.Debug("UDP 'connection' closed", "laddr", conn.LocalAddr())
+	}()
 	if err != nil {
 		logger.Error("error udp dialing for punch", err)
 		return nil, nil
 	}
 
+	cliCtx.initiations[idx].punchLaddrUsed, _ = conn.LocalAddr().(*net.UDPAddr)
 	enc := json.NewEncoder(conn)
 	err = enc.Encode(cm.PunchRequest{PunchCode: startChatDReq.PunchCode})
 
@@ -159,6 +171,8 @@ func (cliCtx *Context) handleStartChatD(reqFrame cm.RFrame) (res cm.Response, er
 	}
 
 	logger.Debug("punch request sent!")
+	conn.Close()
+	logger.Debug("UDP 'connection' closed", "laddr", conn.LocalAddr())
 
 	return nil, nil
 }
@@ -174,6 +188,56 @@ func (ctx *Context) handleChatStartFinish(reqFrame common.RFrame) (res common.Re
 		"nick", startChatFinishReq.OtherSideNickname,
 		"addr", startChatFinishReq.OtherSideAddress)
 
+	ctx.initiationsLock.RLock()
+	defer ctx.initiationsLock.RUnlock()
+
+	idx := slices.IndexFunc(ctx.initiations, func(i InitiationInfo) bool {
+		return i.otherSideNick == startChatFinishReq.OtherSideNickname
+	})
+	relatedInitiation := ctx.initiations[idx]
+
+	logger.Debug("punch laddr used", "laddr", relatedInitiation.punchLaddrUsed)
+	raddr, err := net.ResolveUDPAddr("udp", startChatFinishReq.OtherSideAddress)
+	if err != nil {
+		logger.Error(err)
+		return nil, nil
+	}
+	logger.Debug("resolved raddr", "raddr", raddr.String())
+	logger.Debug("dialing udp")
+
+	conn, err := net.DialUDP("udp", relatedInitiation.punchLaddrUsed, raddr)
+
+	if err != nil {
+		logger.Error(err)
+		return nil, nil
+	}
+
+	logger.Debugf("dialed udp L%s<->R%s", relatedInitiation.punchLaddrUsed.String(), raddr.String())
+
+	go func() {
+		logger.Debug("waiting for message from other peer")
+		bb := make([]byte, 1024)
+		conn.SetDeadline(time.Now().Add(time.Second * 5))
+		n, _, err := conn.ReadFrom(bb)
+		if err != nil {
+			logger.Error(err)
+			return
+		}
+		bb = bb[:n]
+		logger.Debug("got info from other peer", "info", string(bb))
+	}()
+
+	for i := 0; i < 5; i++ {
+		logger.Debugf("writing Hello to other peer")
+		_, err = conn.Write([]byte("Hello"))
+		if err != nil {
+			logger.Error(err)
+			return nil, nil
+		}
+
+		time.Sleep(time.Second)
+	}
+
 	return nil, nil
 }
 
@@ -445,7 +509,7 @@ func RunClient(settings common.ClientSettings) {
 
 				cliCtx.initiationsLock.RLock()
 				for _, i := range cliCtx.initiations {
-					logger.Debugf("with %s", i.otherSideNick)
+					logger.Debugf("with %+v", i)
 				}
 				cliCtx.initiationsLock.RUnlock()
 			} else if cmdName == "startchatc" {

server/server.go

@@ -548,7 +548,11 @@ func testEcho(hdlCtx *handlerContext) {
 }
 
 func (ctx *serverContext) wsapiHandler(w http.ResponseWriter, r *http.Request) {
-	upgrader := websocket.Upgrader{}
+	upgrader := websocket.Upgrader{
+		CheckOrigin: func(r *http.Request) bool {
+			return true // Allow all origins
+		},
+	}
 
 	conn, err := upgrader.Upgrade(w, r, nil)