hour13 example04 running error with callback function undefined

[changyh]

Hi George,

I got the following error on the hour13 example 4 of your book, I put it as the following, who define the callback function?

Thanks, Y.H. Chang

C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_nodejs\hour13\example04>node ap p.js info - socket.io started debug - served static content /socket.io.js debug - client authorized info - handshake authorized 18904434431555541341 debug - setting request GET /socket.io/1/websocket/18904434431555541341 debug - set heartbeat interval for client 18904434431555541341 debug - client authorized for debug - websocket writing 1::

C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_nodejs\hour13\example04\app.js: 16 callback(true); ^ TypeError: undefined is not a function at Socket. (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_node js\hour13\example04\app.js:16:7) at Socket.EventEmitter.emit as $emit at SocketNamespace.handlePacket (C:\1yh\download\bk\JavaScript\node_js_Redis \tysf_nodejs\hour13\example04\node_modules\socket.io\lib\namespace.js:335:22) at Manager.onClientMessage (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf _nodejs\hour13\example04\node_modules\socket.io\lib\manager.js:459:38) at WebSocket.Transport.onMessage (C:\1yh\download\bk\JavaScript\node_js_Redi s\tysf_nodejs\hour13\example04\node_modules\socket.io\lib\transport.js:387:20) at Parser. (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_node js\hour13\example04\node_modules\socket.io\lib\transports\websocket\hybi-16.js:4 0:10) at Parser.EventEmitter.emit (events.js:93:17) at opcodeHandlers.1.finish (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf _nodejs\hour13\example04\node_modules\socket.io\lib\transports\websocket\hybi-16 .js:286:16) at Parser.opcodeHandlers.1.expectData [as expectHandler](C:1yhdownloadbk JavaScriptnode_js_Redistysf_nodejshour13example04node_modulessocket.ioli btransportswebsockethybi-16.js:297:15) at Parser.add (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_nodejs\hour1 3\example04\node_modules\socket.io\lib\transports\websocket\hybi-16.js:464:24)

C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_nodejs\hour13\example04>

[shapeshed]

The callback is sent by the client here

https://github.com/shapeshed/nodejsbook.io.examples/blob/master/hour13/example07/views/layout.jade#L51

Are you using the code examples from github? If so could you let me know what version of node you are running using node -v?

[changyh]

Hi George,

I am using code sample on github. It is hour13 example4 on windows 7 with node.js v0.8.12.

The major error is function (data, callback), the callback is not defined as the following.

Thanks,

Y.H. Chang

C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_nodejs\hour13\example04>node ap p.js info - socket.io started debug - served static content /socket.io.js debug - client authorized info - handshake authorized 18904434431555541341 debug - setting request GET /socket.io/1/websocket/18904434431555541341 debug - set heartbeat interval for client 18904434431555541341 debug - client authorized for debug - websocket writing 1::

C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_nodejs\hour13\example04\app.js: 16 callback(true); ^ TypeError: undefined is not a function at Socket. (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_node js\hour13\example04\app.js:16:7) at Socket.EventEmitter.emit as $emit at SocketNamespace.handlePacket (C:\1yh\download\bk\JavaScript\node_js_Redis \tysf_nodejs\hour13\example04\node_modules\socket.io \lib\namespace.js:335:22) at Manager.onClientMessage (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf _nodejs\hour13\example04\node_modules\socket.io\lib\manager.js:459:38) at WebSocket.Transport.onMessage (C:\1yh\download\bk\JavaScript\node_js_Redi s\tysf_nodejs\hour13\example04\node_modules\socket.io \lib\transport.js:387:20) at Parser. (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_node js\hour13\example04\node_modules\socket.io \lib\transports\websocket\hybi-16.js:4 0:10) at Parser.EventEmitter.emit (events.js:93:17) at opcodeHandlers.1.finish (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf _nodejs\hour13\example04\node_modules\socket.io \lib\transports\websocket\hybi-16 .js:286:16) at Parser.opcodeHandlers.1.expectData [as expectHandler](C:1yhdownloadbk JavaScriptnode_js_Redistysf_nodejshour13example04node_modules socket.ioli btransportswebsockethybi-16.js:297:15) at Parser.add (C:\1yh\download\bk\JavaScript\node_js_Redis\tysf_nodejs\hour1 3\example04\node_modules\socket.io \lib\transports\websocket\hybi-16.js:464:24)

On Thu, Nov 8, 2012 at 5:19 AM, George Ornbo [email protected]:

The callback is sent by the client here

https://github.com/shapeshed/nodejsbook.io.examples/blob/master/hour13/example07/views/layout.jade#L51

Are you using the code examples from github? If so could you let me know what version of node you are running using node -v?

— Reply to this email directly or view it on GitHubhttps://github.com/shapeshed/nodejsbook.io.examples/issues/2#issuecomment-10187482.

[michaeltse]

Same error happening to me here