Node.JS單個套接字，多個事件（上傳）

Question

我正在開發一個上傳跟蹤器（進度欄等）。

因此對於我的前端，我使用jQuery File upload。 后端上傳是使用單獨的工作程序完成的，在那里我使用Redis pub / sub。 因此，要連接前端和后端，我使用Node.JS（socket.io）。

jQuery文件上傳具有一個“ done ”回調函數，該函數表示將我們的文件到達服務器。

對於單個文件，這絕對可以正常工作。

當我嘗試同時上傳2個以上文件時，會出現問題。 “完成”回調函數被附加到套接字偵聽器2次以上（如果我錯了，請更正我），並且作為輸出，我得到這樣的東西：

579 " - progress: " 8.333333333333334
580 " - progress: " 8.333333333333334 
579 " - progress: " 16.666666666666668 
580 " - progress: " 16.666666666666668 
579 " - progress: " 25 
580 " - progress: " 25
....
579 " -> upload is finished!" 
580 " -> upload is finished!"

那是上傳2個文件的示例。 這根本沒有任何意義，因為它們只能一個接一個地處理。

所以它應該看起來像這樣：

579 " - progress: " 8.333333333333334
579 " - progress: " 16.666666666666668 
579 " - progress: " 25
....

579 " -> upload is finished!"
580 " - progress: " 8.333333333333334
580 " - progress: " 16.666666666666668
....
580 " -> upload is finished!"

Node.js服務器端工作正常。 這是它的日志：

RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  progress  FROM  upload-579
RECEIVED  done  FROM  upload-579
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  progress  FROM  upload-580
RECEIVED  done  FROM  upload-580

它從Redis通道接收消息，並向客戶端發出適當的消息。 我認為問題出在客戶端的某個地方，但是我無法弄清楚如何修改那里的代碼來獲得我想要的東西。 可以做些什么使它們彼此分離嗎？

PS

Answer 1

客戶端上的套接字事件回調將觸發來自Node.js的任何發射消息。 這就是為什么您看到重復的日志消息的原因。 在套接字消息中發送其他數據，或附加唯一事件。