Node js socket io close client connection

Question

How can I close the socket connection on the client side   I am using      socket io 0 9 node js 0 10 15 express 3 3 4   i e   call localhost test -- server side  var test   io  of   test    on  connection   function  socket       console log  open socket      socket      socket on  disconnect   function          console log  disconnected event          socket manager onClientDisconnect socket id   -- gt  endless loop with this disconnect event on server side       socket disconnect    -- gt  same here             -- client side  var socket   io connect  http   localhost 3000 test    socket on  disconnect   function         console log  disconnect client event             socket emit  getInitData   function  data         do something with data       If I load the test-page I need some values from the server  getInitData   On the first page visit I get the data once  on a reload or second visit I get it twice and so on     The connection on the server side is beeing closed automatically on page reload and if you leave the page  But on the client side the connection is still open  How can I close the connection on the client side or check if there is already a open connection   UPDATE I tried now the following   client side   window onbeforeunload   function e      socket disconnect         This triggers on the client side the disconnect event  but I still get the twice or tripple response

User · Accepted Answer

There is no such thing as connection on server side and/or browser side. There is only one connection. If one of the sides closes it, then it is closed (and you cannot push data to a connection that is closed obviously).

Now a browser closes the connection when you leave the page (it does not depend on the library/language/OS you are using on the sever-side). This is at least true for WebSockets (it might not be true for long polling because of keep-alive but hopefuly socket.io handles this correctly).

If a problem like this happens, then I'm pretty sure that there's a bug in your own code (on the server side). Possibly you are stacking some event handlers where you should not.

User · Answer

For socket io version 1 4 5   On server   socket on  end   function         socket disconnect 0         On client   var io   io    io emit  end

User · Answer

try this to close the connection   socket close      and if you want to open it again   socket connect

User · Answer

Did you try    socket disconnect      on client

User · Answer

socket disconnect     Only reboots the connection firing disconnect event on client side  But gets connected again   socket close     Disconnect the connection from client  The client will keep trying to connect

User · Answer

socket disconnect   is a synonym to socket close   which disconnect the socket manually   When you type in client side    const socket   io  http   localhost      this will open a connection with autoConnect  true   so the lib will try to reconnect again when you disconnect the socket from server  to disable the autoConnection   const socket   io  http   localhost    autoConnect  false    socket open      synonym to socket connect     And if you want you can manually reconnect   socket on  disconnect        gt      socket open

User · Answer

I m trying to close users connection in version 1 0 and found this method   socket conn close     The difference between this method and disconnect   is that the client will keep trying to reconnect to the server

User · Answer

Just try socket disconnect true  on the server side by emitting any event from the client side

[javascript] Node.js: socket.io close client connection

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