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udp client: unify error handling

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Feross Aboukhadijeh 2014-03-27 21:29:23 -07:00
parent b406d4ec5e
commit 1721eed413
1 changed files with 11 additions and 5 deletions
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16
index.js
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@ -147,31 +147,37 @@ Client.prototype._requestUdp = function (announceUrl, opts) {
var transactionId = new Buffer(hat(32), 'hex')
var timeout = setTimeout(function () {
error('tracker request timed out')
}, 15000)
function error (message) {
self.emit('error', new Error(message))
socket.close()
}, 5000)
clearTimeout(timeout)
}
socket.on('error', function (err) {
self.emit('error', err)
error(err)
})
socket.on('message', function (message, rinfo) {
if (message.length < 8 || message.readUInt32BE(4) !== transactionId.readUInt32BE(0)) {
return self.emit('error', new Error('tracker sent back invalid transaction id'))
return error(new Error('tracker sent back invalid transaction id'))
}
var action = message.readUInt32BE(0)
switch (action) {
case 0:
if (message.length < 16) {
return self.emit('error', new Error('invalid udp handshake'))
return error(new Error('invalid udp handshake'))
}
announce(message.slice(8, 16), opts)
return
case 1:
if (message.length < 20) {
return self.emit('error', new Error('invalid announce message'))
return error(new Error('invalid announce message'))
}
// TODO: this should be stored per tracker, not globally for all trackers