Property 'GET' of ... is not a function

[LinusU]

I saw this once long before and didn't think more of it, but now I have finally found out why it happens.

/usr/local/lib/node_modules/airsonos/node_modules/nodetunes/lib/rtsp.js:47
    this.methodMapping[req.method](req, res);
                                  ^
TypeError: Property 'GET' of object #<Object> is not a function
    at RtspServer.<anonymous> (/usr/local/lib/node_modules/airsonos/node_modules/nodetunes/lib/rtsp.js:47:35)
    at emit (events.js:98:17)
    at null.<anonymous> (/usr/local/lib/node_modules/airsonos/node_modules/nodetunes/node_modules/httplike/lib/server/parser.js:78:16)
    at Socket.emit (events.js:95:17)
    at Socket.<anonymous> (_stream_readable.js:764:14)
    at Socket.emit (events.js:92:17)
    at emitReadable_ (_stream_readable.js:426:10)
    at emitReadable (_stream_readable.js:422:5)
    at readableAddChunk (_stream_readable.js:165:9)
    at Socket.Readable.push (_stream_readable.js:127:10)

Turns out that something is using port 5000, which I'm also using when developing a website in node.js. What happens is that my server fails to listen to port 5000, obviously, and when I visit http://localhost:5000/ in my browser, it makes the request that kills the server.

A simple check to end the connection instead of crashing the entire program would be nice :)

[stephen]

Hm, I don't believe this should be the reason for this error popping up.

Nodetunes should compensate for ports being used, and attempts to find something between 5000 and 5050 that's unused. (see: https://github.com/stephen/nodetunes/blob/master/lib/server.js#L50-L53)

[LinusU]

Just to clarify, my server wasn't listening at all. I thought that it was listening on port 5000 and thus directed my web browser to http://localhost:5000. That made it send GET / HTTP/1.1\r\n to the airsonos process, which then failed when trying to execute the function methodMapping['GET'].

[jorgenkg]

First of all: @stephen, I love airsonos!

This error also occurs on my Mac whenever I try to AirPlay the sound output from the computer to airsonos. From my understanding, it seems that nodetunes might be the problem.

I'm not sure whether you've got access to a Mac, but I've describe how to reproduce the error below:

1. Option-click the speaker icon in the top right
2. Select the airsonos instance
3. The appended errorlog is then printed:

Searching for Sonos devices on network...
Setting up AirSonos for [PLAY:3]

/usr/local/lib/node_modules/airsonos/node_modules/nodetunes/lib/rtsp.js:47
    this.methodMapping[req.method](req, res);
                                  ^
TypeError: Property '' of object #<Object> is not a function
    at RtspServer.<anonymous> (/usr/local/lib/node_modules/airsonos/node_modules/nodetunes/lib/rtsp.js:47:35)
    at EventEmitter.emit (events.js:98:17)
    at null.<anonymous> (/usr/local/lib/node_modules/airsonos/node_modules/nodetunes/node_modules/httplike/lib/server/parser.js:78:16)
    at Socket.EventEmitter.emit (events.js:95:17)
    at Socket.<anonymous> (_stream_readable.js:745:14)
    at Socket.EventEmitter.emit (events.js:92:17)
    at emitReadable_ (_stream_readable.js:407:10)
    at emitReadable (_stream_readable.js:403:5)
    at readableAddChunk (_stream_readable.js:165:9)
    at Socket.Readable.push (_stream_readable.js:127:10)

[stephen]

I believe this should be fixed in 0.0.17. (nodetunes now checks for invalid methods)