mirror of
https://github.com/seigler/dash-docs
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ccda4caa0c
This commit provides a detailed overview of the current block download method, which I've retroactively named blocks-first for parallelism with headers-first. New And Significantly Revised: * New Initial Block Download (IBD) section (h3) with Blocks-First subsection (h4) * New Orphan Block subsection (under Blocks Broadcasting) describing orphan blocks and how they're handled under blocks-first. Also includes a simple illustration of the difference between orphan blocks and stale blocks. Thanks to luke-jr for his s/orphan block/stale block/ commit a couple months ago---that made this commit much easier. Edits: * Cleaned up a couple cases missed by previous s/orphan/stale/ commit because they used past tense (orphaned). * In P2P reference section, mentioned that a `block` message can be sent unsolicited by miners. * Mention that `getheaders` and `headers` were added in protocol version 31800. * Moved a few internal links around and added a few new internal links. Administrivia: * Started adding "TODOv0.10" in HTML comments to places that need to be updated when 0.10 is released so that I can easily git grep for that tag later.
73 lines
2.2 KiB
Text
73 lines
2.2 KiB
Text
digraph {
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// This file is licensed under the MIT License (MIT) available on
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// http://opensource.org/licenses/MIT.
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size=6.25;
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rankdir=LR
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splines = "false";
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ranksep = 0.2;
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nodesep = 0.1;
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edge [ penwidth = 1.75, fontname="Sans" ]
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node [ penwidth = 1.75, shape = "box", fontname="Sans"]
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graph [ penwidth = 1.75, fontname="Sans" ]
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ibd -> inv:f1 -> sync [ dir = "back" ];
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ibd [ label = "IBD\nNode", shape="none" ];
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sync [ label = "Sync\nNode", shape="none" ];
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inv [ shape="plaintext", label=<
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<table border="2" cellborder="1">
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<tr>
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<td colspan="4" port="f1" border="0" cellpadding="4"><b>Inv Message</b></td>
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</tr>
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<tr>
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<td colspan="4" border="0"><i>Message Header</i></td>
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</tr>
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<tr>
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<td border="1"><i>Start String</i><br/><font face="courier">f9beb4d9</font></td>
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<td border="1"><i>Command</i><br/><font face="courier">inv</font></td>
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<td border="1"><i>Size</i><br/><font face="courier">18003</font></td>
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<td border="1"><i>Checksum</i><br/><font face="courier">25173c57</font></td>
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</tr>
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<tr>
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<td colspan="4" border="0"><i>Payload</i></td>
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</tr>
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<tr>
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<td colspan="4"><i>Number Of Inventories (Max 500 In Reply To GetBlocks) </i><br /><font face="courier">500</font></td>
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</tr>
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<tr>
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<td colspan="4">
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<table border="0">
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<tr>
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<td colspan="2"><i>Inventory Entries</i></td>
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</tr>
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<tr>
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<td><i>Type</i></td>
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<td><i>Unique Identifier (For Blocks, A Header Hash)</i></td>
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</tr>
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<tr>
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<td><font face="courier">block</font></td>
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<td><font face="courier">4860eb18bf1b1620...688e9a8300000000</font></td>
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</tr>
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<tr>
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<td><font face="courier">block</font></td>
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<td><font face="courier">bddd99ccfda39da1...065f626a00000000</font></td>
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</tr>
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<tr>
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<td colspan="2"><i>...............498 more inventory entries...............</i></td>
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</tr>
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</table>
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</td>
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</tr>
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</table>>];
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label = "First inv message reply sent to Initial Blocks Download (IBD) node"
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}
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