<div dir="ltr">Alex,<div><br></div><div>You need to set blocking=true in the chatplan. This will include a Delivery-Failure=true/false header in the event that is generated when you send the message. You will need to have an ESL client parse that field to determine next steps.</div>
<div><br></div><div style>If you don't explicitly set blocking to true, then FS doesn't wait for a response and so it has no way of knowing if the message was delivered or not. For that reason, the Delivery-Failure header is not present in the event when in non-blocking mode.</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jan 14, 2013 at 6:53 AM, Pip Live <span dir="ltr"><<a href="mailto:itispip-qq@hotmail.com" target="_blank">itispip-qq@hotmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi, I use Freeswitch to handle SIP message between SIP extentions, how can server know does the message be received by client or not? I noticed even if a SIP extention is offline/unregister, SIP message will still be sent by server but just the receiver will never get it (even if later the receiver online/registered again).<div>
<br></div><div>What I want to achieve is: send SIP message to an extention, if received OK, nothing happen; if not, forward the message to user's email address.</div><div><br></div><div>brgds, Alex</div>
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