背景
使用的
golang.org/x/net/websocket
包，前端一發來消息就報錯
if err = websocket.Message.Receive(ws, &msg); err != nil {
vlog.Error("接收消息錯誤：", err)
return
}
報錯：
接收消息錯誤： EOF
排查
先排除了下網絡問題，發現是OK的。
反複看了下代碼,感覺沒啥問題啊，于是搜了個demo。
https://www.cnblogs.com/lanyangsh/p/9190296.html
改了下：
package main
import (
"fmt"
"golang.org/x/net/websocket"
"log"
"net/http"
)
func Echo(ws *websocket.Conn) {
var err error
for {
var reply string
//websocket接受資訊
if err = websocket.Message.Receive(ws, &reply); err != nil {
fmt.Println("receive failed:", err)
break
}
fmt.Println("reveived from client: " + reply)
msg := "received:" + reply
fmt.Println("send to client:" + msg)
//這裡是發送消息
if err = websocket.Message.Send(ws, msg); err != nil {
fmt.Println("send failed:", err)
break
}
}
}
func main() {
//接受websocket的路由位址
http.Handle("/websocket", websocket.Handler(Echo))
if err := http.ListenAndServe(":1234", nil); err != nil {
log.Fatal("ListenAndServe:", err)
}
}
前端：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>go測試socket</title>
</head>
<body>
<script type="text/javascript">
var sock = null;
var wsuri = "ws://127.0.0.1:8635/turntable";
window.onload = function() {
console.log("onload");
sock = new WebSocket(wsuri);
sock.onopen = function() {
console.log("connected to " + wsuri);
}
sock.onclose = function(e) {
console.log("connection closed (" + e.code + ")");
}
sock.onmessage = function(e) {
console.log("message received: " + e.data);
}
};
function send() {
var msg = document.getElementById('message').value;
sock.send(msg);
};
</script>
<h1>WebSocket Echo Test</h1>
<form>
<p>
Message: <input id="message" type="text" value="Hello, world!">
</p>
</form>
<button onclick="send();">Send Message</button>
</body>
</html>
然後發現自己調用是好的。發給前端，讓他本機調用，也是好的。
于是。。。前端發現是自己的定時器時間沒寫，是以一連就斷開了。。。
總結
- 先排除基本問題，比如網絡、防火牆。
- 寫demo，驗證問題在哪裡。
- EOF是斷開就會觸發。
![caffe編譯的坑：fatal error: cublas_v2.h:沒有那個檔案或目錄[圖]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)