Incorrect use of Message#getSize() in MailUtils
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Key: SYNAPSE-359
URL: https://issues.apache.org/jira/browse/SYNAPSE-359
Project: Synapse
Issue Type: Bug
Components: Transports
Affects Versions: 1.2
Reporter: Andreas Veithen
Assignee: Andreas Veithen
Fix For: 1.3
The Javadoc of the Message#getSize() method specifies that "the size may not be
an exact measure of the content size and may or may not account for any
transfer encoding of the content. The size is appropriate for display in a
user interface to give the user a rough idea of the size of this part." However
MailUtils#getMessageTextPayload and MailUtils#getMessageBinaryPayload in
conjunction with MailUtils#getBytesFromInputStream use this information to
allocate a buffer and subsequently compare it with the number of bytes actually
read from the message. When the estimation returned by getSize is not accurate,
this leads to a failure with error message "Could not completely read the
stream to conver to a byte[]". Therefore the mail transport listener is in
general unable to process plain text or binary messages correctly.
Note that the code causing this issue will be replaced by the modifications
proposed in SYNAPSE-304.
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