Modified network stack (protocols).
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mathiasdm
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<use xlink:href="#glyph0-15" x="309.085938" y="36.875"/>
|
||||
</g>
|
||||
</g>
|
||||
</svg>
|
||||
|
After Width: | Height: | Size: 29 KiB |
@ -4,91 +4,104 @@
|
||||
|
||||
<p>
|
||||
Here is the protocol stack for I2P.
|
||||
See also the<a href="how.html">Index to Technical Documentation</a>.
|
||||
See also the <a href="how.html">Index to Technical Documentation</a>.
|
||||
Updated August 2010, current for router version 0.8.
|
||||
<p>
|
||||
|
||||
<table border=1>
|
||||
<tr>
|
||||
<td>Standard Apps
|
||||
<td align="center">Jetty, Apache, Monotone, CVS, browsers
|
||||
<td>
|
||||
<p>
|
||||
Each of the layers in the stack provides extra capabilities.
|
||||
The capabilities are listed below, starting at the bottom of the protocol stack.
|
||||
<ul>
|
||||
<li>
|
||||
<b>Internet Layer:</b>
|
||||
<br />
|
||||
IP: Internet Protocol, allow addressing hosts on the regular internet and routing packets across the internet using best-effort delivery.
|
||||
</li>
|
||||
<li>
|
||||
<b>Transport Layer:</b>
|
||||
<br />
|
||||
TCP: Transmission Control Protocol, allow reliable, in-order delivery of packets across the internet.
|
||||
<br />
|
||||
UDP: User Datagram Protocol, allow unreliable, out-of-order delivery of packets across the internet.
|
||||
</li>
|
||||
<li>
|
||||
<b>I2P Transport Layer:</b> provide encrypted connections between 2 I2P routers. These are not anonymous yet, this is strictly a hop-to-hop connection.
|
||||
Two protocols are implemented to provide these capabilities. NTCP builds on top of TCP, while SSU uses UDP.
|
||||
<br />
|
||||
<a href="ntcp.html">NTCP</a>: NIO-based TCP
|
||||
<br />
|
||||
<a href="udp.html">SSU</a>: Secure Semi-reliable UDP
|
||||
</li>
|
||||
<li>
|
||||
<b>I2P Tunnel Layer:</b> provide full encrypted tunnel connections.
|
||||
<br />
|
||||
<a href="tunnel_message_spec.html">Tunnel messages</a>: tunnel messages are large messages containing encrypted I2NP (see below) messages and encrypted instructions for their delivery.
|
||||
The encryption is layered. The first hop will decrypt the tunnel message and read a part. Another part can still be encrypted (with another key),
|
||||
so it will be forwarded.
|
||||
<br />
|
||||
<a href="i2np.html">I2NP messages</a>: I2P Network Protocol messages are used to pass messages through multiple routers. These I2NP messages are combined in tunnel messages.
|
||||
</li>
|
||||
<li>
|
||||
<b>I2P Garlic Layer:</b> provide encrypted and anonymous end-to-end I2P message delivery.
|
||||
<br />
|
||||
<a href="i2np.html">I2NP messages</a>: I2P Network Protocol messages are wrapped in each other and used to ensure encryption between two tunnels and are passed along from source to destination, keeping both anonymous.
|
||||
</li>
|
||||
</ul>
|
||||
</p>
|
||||
|
||||
<tr>
|
||||
<td>Other I2P Apps
|
||||
<td align="center">Syndie, EepGet, <a href="plugins.html">plugins</a>
|
||||
<td>
|
||||
<p>
|
||||
The following layers are strictly speaking no longer part of the I2P Protocol stack, they are not part of the core 'I2P router' functionality.
|
||||
However, each of these layers adds additional functionality, to allow applications simple and convenient I2P usage.
|
||||
<ul>
|
||||
<li>
|
||||
<b>I2P Client Layer:</b> allow any client to use I2P functionality, without requiring the direct use of the router API.
|
||||
<br />
|
||||
<a href="i2cp.html">I2CP</a>: I2P Client Protocol, allows secure and asynchronous messaging over I2P by communicating messages over the I2CP TCP socket.
|
||||
</li>
|
||||
<li>
|
||||
<b>I2P End-to-end Transport Layer:</b> allow TCP- or UDP-like functionality on top of I2P.
|
||||
<br />
|
||||
<a href="streaming.html">Streaming Library</a>: an implementation of TCP-like streams over I2P. This allows easier porting of existing applications to I2P.
|
||||
<br />
|
||||
<a href="datagrams.html">Datagram Library</a>: an implementation of UDP-like messages over I2P. This allows easier porting of existing applications to I2P.
|
||||
</li>
|
||||
<li>
|
||||
<b>I2P Application Interface Layer:</b> additional (optional) libraries allowing easier implementations on top of I2P.
|
||||
<br />
|
||||
<a href="i2ptunnel.html">I2PTunnel</a>
|
||||
<br />
|
||||
<a href="sam.html">SAM</a>/<a href="samv2.html">SAMv2</a>/<a href="samv3.html">SAMv3</a>(*),
|
||||
<a href="bob.html">BOB</a>
|
||||
</li>
|
||||
<li>
|
||||
<b>I2P Application Proxy Layer:</b> proxy systems.
|
||||
<br />
|
||||
HTTP Client/Server, IRC Client, <a href="socks.html">SOCKS</a>, Streamr
|
||||
</li>
|
||||
</ul>
|
||||
</p>
|
||||
<p>
|
||||
Finally, what could be considered the <b>'I2P application layer'</b>, is a large number of applications on top of I2P.
|
||||
We can order this based on the I2P stack layer they use.
|
||||
<ul>
|
||||
<li><b>Streaming/datagram applications</b>: i2psnark, Syndie, i2phex...</li>
|
||||
<li><b>SAM/BOB applications</b>: IMule, i2p-bt, i2prufus, Robert...</li>
|
||||
<li><b>Other I2P applications</b>: Syndie, EepGet, <a href="plugins.html">plugins...</a></li>
|
||||
<li><b>Regular applications</b>: Jetty, Apache, Monotone, CVS, browsers, e-mail...</li>
|
||||
</ul>
|
||||
</p>
|
||||
|
||||
<tr>
|
||||
<td>SAM/BOB Apps
|
||||
<td>
|
||||
<td align="center">IMule, i2p-bt, i2prufus, Robert
|
||||
<center>
|
||||
<div class="box">
|
||||
<img src="_static/images/protocol_stack.png" alt="I2P Network stack" title="I2P Network stack" />
|
||||
<br /><br />
|
||||
Figure 1: The layers in the I2P Network stack.
|
||||
</div>
|
||||
</center>
|
||||
<br/>
|
||||
|
||||
<tr>
|
||||
<td>Proxy Apps
|
||||
<td align="center">HTTP Client/Server, IRC Client, <a href="socks.html">SOCKS</a>
|
||||
<td align="center">Streamr
|
||||
|
||||
<tr>
|
||||
<td>Interface Apps
|
||||
<td align="center"><a href="i2ptunnel.html">I2PTunnel</a>
|
||||
<td align="center"><a href="sam.html">SAM</a>
|
||||
/
|
||||
<a href="samv2.html">SAMv2</a>
|
||||
/
|
||||
<a href="samv3.html">SAMv3</a>
|
||||
(*), <a href="bob.html">BOB</a>
|
||||
|
||||
<tr>
|
||||
<td>Java Apps
|
||||
<td align="center">i2psnark, Syndie, i2phex
|
||||
<td>
|
||||
|
||||
<tr>
|
||||
<td>End-to-End Transport
|
||||
<td align="center"><a href="streaming.html">Streaming Lib</a>
|
||||
<td align="center"><a href="datagrams.html">Datagrams</a>
|
||||
|
||||
<tr>
|
||||
<td>Client Protocol
|
||||
<td align="center" colspan=2><a href="i2cp.html">I2CP</a>
|
||||
|
||||
<tr>
|
||||
<td>Network Protocol
|
||||
<td align="center" colspan=2><a href="i2np.html">I2NP</a>
|
||||
|
||||
<tr>
|
||||
<td>Garlic Encryption
|
||||
<td align="center" colspan=2><a href="how_elgamalaes.html">ElGamal/AES+SessionTag</a>
|
||||
|
||||
<tr>
|
||||
<td>Tunnel Messages
|
||||
<td align="center" colspan=2><a href="tunnel_message_spec.html">Tunnel Messages</a>
|
||||
|
||||
<tr>
|
||||
<td>Tunnel Message Encryption
|
||||
<td align="center" colspan=2><a href="techintro.html#op.crypto">AES256/CBC</a>
|
||||
|
||||
<tr>
|
||||
<td><a href="transports.html">Transports</a>
|
||||
<td align="center"><a href="ntcp.html">NTCP</a>
|
||||
<td align="center"><a href="udp.html">SSU</a>
|
||||
|
||||
<tr>
|
||||
<td>Transport Encryption
|
||||
<td align="center" colspan=2><a href="techintro.html#op.crypto">AES256/CBC</a>
|
||||
|
||||
<tr>
|
||||
<td>
|
||||
<td align="center">Java NIO TCP
|
||||
<td align="center" rowspan=2>UDP
|
||||
|
||||
<tr>
|
||||
<td>OS
|
||||
<td align="center">TCP
|
||||
|
||||
</table>
|
||||
<p>
|
||||
* Note: SAM/SAMv2 can use both the streaming lib and datagrams.
|
||||
</p>
|
||||
|
||||
{% endblock %}
|
||||
|
||||
BIN
www.i2p2/static/images/protocol_stack.png
Normal file
BIN
www.i2p2/static/images/protocol_stack.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 21 KiB |
Reference in New Issue
Block a user