我实际上使用Gorilla软件包将我的Golang Websocket服务器放置在其中。如果我让服务器保持运行状态,大约每10天就会出现此错误。
2016/11/28 19:22:49 http: Accept error: accept tcp [::]:9001: accept4: too many open files; retrying in 1s
2016/11/28 19:22:50 http: Accept error: accept tcp [::]:9001: accept4: too many open files; retrying in 1s
2016/11/28 19:22:51 http: Accept error: accept tcp [::]:9001: accept4: too many open files; retrying in 1s
2016/11/28 19:22:52 http: Accept error: accept tcp [::]:9001: accept4: too many open files; retrying in 1s
2016/11/28 19:22:53 http: Accept error: accept tcp [::]:9001: accept4: too many open files; retrying in 1s
2016/11/28 19:22:54 http: Accept error: accept tcp [::]:9001: accept4: too many open files; retrying in 1s
这是我的代码:
func websocketHandler(writer http.ResponseWriter, request *http.Request){
var socket *websocket.Conn
user := new(user.User)
user.Token = getParamURI(request.URL.RequestURI(), "token")
if user.GetUserByToken() == false {
errors := api.Error{}
socket.Close()
errors.ListErrors = append(errors.ListErrors, "Session doesn't exist")
writer.Header().Set("Content-Type", "application/json")
writer.WriteHeader(http.StatusNotAcceptable)
json.NewEncoder(writer).Encode(errors)
return
}
socket, _ = upgrader.Upgrade(writer, request, nil)
err := make(chan string)
go pingSocket(socket, err)
go handleChangeNotification(socket, user.Id, err)
go handleChangeMessage(socket, user.Id, err)
for {
tmp := <- err
if len(tmp) > 0 {
break
}
}
socket.Close()
}
我的ulimit配置:
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7902
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7902
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
错误非常难以理解,我不明白,因为我在出现中断或错误的情况下正确关闭了套接字,并且服务器处于生产环境,但是在 beta 版本关闭时只有 4-5 个用户,所以这与限制无关。能有人告诉我错误来自哪里吗?
websocketHandler
在所有情况下都会返回吗?你的程序打开了哪些文件描述符?堆栈跟踪显示程序正在如何处理文件描述符? - JimBnetstat
命令以查看打开的网络连接,以确定问题是否出在其他地方(例如打开但未关闭数据库连接)。 - Charlie Tumahai