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From "Curt Jutzi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMQ-5389) MQTTCodec headerParser - not reducing readSize if nulls are read
Date Fri, 10 Oct 2014 22:30:33 GMT

     [ https://issues.apache.org/jira/browse/AMQ-5389?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Curt Jutzi updated AMQ-5389:
----------------------------
    Attachment: MQTTCodec2.patch

> MQTTCodec headerParser - not reducing readSize if nulls are read
> ----------------------------------------------------------------
>
>                 Key: AMQ-5389
>                 URL: https://issues.apache.org/jira/browse/AMQ-5389
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: MQTT
>    Affects Versions: 5.11.0
>            Reporter: Curt Jutzi
>         Attachments: MQTTCodec2.patch
>
>
> in the header read you'll notice that if 0's are read, i increases to protect the end
of buffer, but when you pass this down to the next parser the size of the buffer passed is
readSize-1 not readSize-i
> As well there is a check for readsize > 1.. this should be (readsize-i > 1)
> {noformat}
> @Override
>         public void parse(DataByteArrayInputStream data, int readSize) throws IOException
{
>             int i = 0;
>             while (i++ < readSize) {
>                 byte b = data.readByte();
>                 // skip repeating nulls
>                 if (b == 0) {
>                     continue;
>                 }
>                 header = b;
>                 currentParser = initializeVariableLengthParser();
>                 // if (readSize > 1) {
>                 //     currentParser.parse(data, readSize - 1);
>                 if (readSize-i > 1) {
>                     currentParser.parse(data, readSize - i);
>                 }
>                 return;
>             }
>         }
> {noformat}



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