<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:14pt"><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 14pt; "><span>Dear Emile,</span></div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 14pt; "><span><br></span></div><div><span><font size="4">It means user id property, message </font><span style="font-size: 19px;">durability</span><font size="4">, </font></span><span>Sender-selected distribution is visible to broker, other than routing key. Is there any other data or property broker I means exchanges consider?</span></div><div><span><br></span></div><div><span>Thanks for your reply.</span></div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 14pt; "> </div><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 14pt; ">Saima Asif<br></div>
<div style="font-size: 14pt; font-family: 'times new roman', 'new york', times, serif; "> <div style="font-size: 12pt; font-family: 'times new roman', 'new york', times, serif; "> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Emile Joubert <emile@rabbitmq.com><br> <b><span style="font-weight: bold;">To:</span></b> Saima Asif <abdullahsaima@yahoo.com> <br><b><span style="font-weight: bold;">Cc:</span></b> "rabbitmq-discuss@lists.rabbitmq.com" <rabbitmq-discuss@lists.rabbitmq.com> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, 11 April 2012, 13:24<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [rabbitmq-discuss] what are message attributes used by broker in RABBITMQ<br> </font> </div> <br>Hi Saima,<br><br>On 11/04/12 12:54, Saima Asif wrote:<br>> "When publishing a message, producers may specify various /message<br>>
attributes/ (message meta-data). Some of this meta-data may be used by<br>> the broker, however, the rest of it is completely opaque to the broker<br>> and is only used by applications that receive the message. "<br>> <br>> I am concerned about what message attributes are used by message broker<br>> in AMQP 0-9 model in general? <br><br>The delivery-mode property is used to indicate persistence requirements.<br>See the "Message durability" section in<br><a href="http://www.rabbitmq.com/tutorials/tutorial-two-python.html" target="_blank">http://www.rabbitmq.com/tutorials/tutorial-two-python.html</a> for details.<br><br>The user-id property is validated only if it is supplied by the<br>publisher. See<br><a href="http://www.rabbitmq.com/extensions.html#validated-user-id" target="_blank">http://www.rabbitmq.com/extensions.html#validated-user-id</a> for details.<br><br>Sender-selected distribution makes use of CC and BCC headers in
the<br>message at the time of publication. See<br><a href="http://www.rabbitmq.com/extensions.html#sender-selected-distribution" target="_blank">http://www.rabbitmq.com/extensions.html#sender-selected-distribution</a><br>for more details:<br><br><br>-Emile<br><br><br><br><br> </div> </div> </div></body></html>