如何创建来自任何域名/IP 地址的任何客户端都可以与之通信的 WebSocket 服务器。我不想为了与服务器通信而打开具有服务器提供的自定义地址的页面。目标是能够通过浏览器扩展或任何意外的终结点与 WebSocket 服务器进行通信。server.gopackage mainimport ( "fmt" "net/http" "github.com/gorilla/websocket")var upgrader = websocket.Upgrader{ ReadBufferSize: 1024, WriteBufferSize: 1024,}func main() { http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { conn, err := upgrader.Upgrade(w, r, nil) if err != nil { fmt.Println(err) // no error just when websocket connecte from my domain } for { // Read message from browser msgType, msg, _ := conn.ReadMessage() // Print the message to the console fmt.Printf("%s sent: %s\n", conn.RemoteAddr(), string(msg)) // Write message back to browser if err = conn.WriteMessage(msgType, msg); err != nil { return } } }) http.HandleFunc("/client", func(w http.ResponseWriter, r *http.Request) { // I dont need this http.ServeFile(w, r, "client.html") }) http.ListenAndServe(":8080", nil)}客户端.js<!DOCTYPE html><html> <head> <meta charset=utf8> <meta name=viewoirt content="width=device-width, initial-scale=1.0"> <title>click bot</title> </head><body><input id="input" type="text" /><button onclick="send()">Send</button><pre id="output"></pre><script> var input = document.getElementById("input"); var output = document.getElementById("output"); var socket = new WebSocket("ws://localhost:8080/"); socket.onopen = function () { output.innerHTML += "Status: Connected\n"; }; socket.onmessage = function (e) { output.innerHTML += "Server: " + e.data + "\n"; }; function send() { socket.send(input.value); input.value = ""; }</script></body></html>当我通过链接或通过浏览器扩展注入它进行连接时,一切都很好。但是当我将其注入另一个没有相同IP地址的页面时,它不起作用。例如:例如,当我在控制台中键入:在我的域以外的域中。localhost:8080/clientwebsocket = new webSocket('ws://localhost: 8080')
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POPMUISE
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例如,当我在控制台中键入内容时:websocket = new webSocket('ws://localhost: 8080')在我的域以外的域中。
问题中的服务器代码实现了同源策略。更改检查源函数以允许来自任何源的连接:
var upgrader = websocket.Upgrader{
ReadBufferSize: 1024,
WriteBufferSize: 1024,
CheckOrigin: func(r *http.Request) bool { return true }
}
问题说,为了简单起见,服务器代码忽略了升级时的错误。如果服务器代码记录了错误,则问题会立即显现出来。始终处理错误!
conn, err := upgrader.Upgrade(w, r, nil)
if err != nil {
fmt.Println(err)
return
}
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