func?(conn?*Connection)writeLoop()?{
???var?(
??????data?[]byte
??????err?error
???)
???select?{
???case?data?=?<-conn.outChan:
??????if?err?=?conn.wsConnect.WriteMessage(websocket.TextMessage?,?data);?err?!=?nil{
?????????goto?ERR
??????}
???case?<-conn.closeChan:
??????goto??ERR
???}

???//for{
???//
???????fmt.Println("發(fā)送1：",data?)
??????data?=?<-?conn.outChan??//第一次堵塞在這里??因?yàn)榇藭r(shí)conn.outChan?為空

??????fmt.Println("發(fā)送2：",data)
???//?if?err?=?conn.wsConnect.WriteMessage(websocket.TextMessage?,?data);?err?!=?nil{
???//????goto?ERR
???//?}
???//
???//
???//}
ERR:
???conn.Close();
}

當(dāng)?shù)谝淮伟l(fā)送消息時(shí) 會被 select 檢測到? outChan ，當(dāng)執(zhí)行到for 時(shí)??outChan? 時(shí)就變空的了，會堵塞起來，導(dǎo)致一次無法正常發(fā)送消息。