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<ol class="chapter"><li class="chapter-item expanded "><a href="Hole.html"><strong aria-hidden="true">1.</strong> How it works</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="Message-flow.html" class="active"><strong aria-hidden="true">1.1.</strong> Message flow</a></li></ol></li><li class="chapter-item expanded "><a href="Protocol.html"><strong aria-hidden="true">2.</strong> Protocol description</a></li><li class="chapter-item expanded "><a href="API.html"><strong aria-hidden="true">3.</strong> Frontend API</a></li></ol>
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<h1 id="message-flow"><a class="header" href="#message-flow">Message flow</a></h1>
<p><em>(pseudocode in Bash style)</em></p>
<p>Hole receiving messages by looking for new items in "user's bin" (place where new messages arrives). Because of how freenet works, we can't just say "Hey! Do I have new messages?", we can specify messages index like: "Hey! Gimme 15th message". Thus we must remember previous message index and to receive the new message we're requesting for 16th message, if we was able to get 15th message.</p>
<p>That's mean, what interlocutor also have to know the last message index in our bin. But <strong>how he can know it, if there's a lot of other users who also sending messages to our bin?</strong> Of course, you can try to receive all messages from the index, you had last remembered, and next index, next, next... until you find the index which does not exist. But it's a freenet, it's take too much time;</p>
<p>The solution is unique Id. User creating and giving his/her unique id to each new interlocutor. And when, if interlocutor sending the message he knows, that last message to us had index <code>$N</code> and sends message with index <code>$N+1</code>, if be more verbose, the new message index he send to us will look like <code>"$(ID)_($N+1)"</code> </p>
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