我克隆了 gorilla websocket 聊天示例并將其更新為使用多個(gè)房間。但是，我收到錯誤消息： Error during WebSocket handshake: Unexpected response code: 404 每當(dāng)我嘗試建立連接時(shí)在 chrome 中。我的源代碼在github上可用。它與原始示例非常相似，只是略有改動。我不知道為什么它不起作用。編輯：問題出現(xiàn)在這行代碼中：for _, name := range []string{"arduino", "java", "go", "scala"} { room := newRoom("go") http.Handle("/chat/go", room) go room.run()}循環(huán)切片會導(dǎo)致 httphandle 函數(shù)出現(xiàn)問題。相反，我單獨(dú)聲明它們：room := newRoom("go")http.Handle("/chat/go", room)go room.run()...有用。我怎樣才能解決這個(gè)問題？
1 回答
精慕HU
TA貢獻(xiàn)1845條經(jīng)驗(yàn) 獲得超8個(gè)贊
所以實(shí)際上從你的index.html文件中，你連接到錯誤的 url
<!-- index.html -->
<script>
var serviceLocation = "ws://0.0.0.0:8080/chat/";
.....
function connectToChatserver() {
room = $('#chatroom option:selected').val();
wsocket = new WebSocket(serviceLocation + room);
// it connect to /chat/<room>, it has slash after chat
這是您的網(wǎng)址main.go
http.Handle("/chat"+name, room)
它會使 url 像這樣：http://localhost:8080/chatgo，而不是你想要的：http://localhost:8080/chat/go
Fyi，它會因?yàn)槟銢]有正確處理而出錯channel，所以在我發(fā)送1條消息后，它會自動關(guān)閉。但這是另一個(gè)話題。
2020/08/04 06:42:10 running chat room java
2020/08/04 06:42:10 running chat room go
2020/08/04 06:42:10 running chat room arduino
2020/08/04 06:42:10 running chat room scala
2020/08/04 06:42:15 new client in room arduino
2020/08/04 06:42:15 client leaving room arduino
2020/08/04 06:42:15 client leaving room arduino
panic: close of closed channel
goroutine 6 [running]:
main.(*Room).run(0xc00007ac90)
/home/fahim/Projects/Golang/go-chat/room.go:70 +0x3b5
created by main.main
/home/fahim/Projects/Golang/go-chat/main.go:17 +0x2bd
exit status 2
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