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delivery instruction clarifications

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zzz
2013-11-06 16:06:54 +00:00
parent 4e31b66d6c
commit 2b64645da5
1 changed files with 10 additions and 6 deletions
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www.i2p2/pages/tunnel_message_spec.html
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@@ -2,7 +2,7 @@
{% block title %}Tunnel Message Specification{% endblock %}
{% block content %}
Updated October 2011 for release 0.8.10
Updated November 2013 for release 0.9.9
<h1>Tunnel Message Specification</h1>
This document specifies the format of tunnel messages.
@@ -204,6 +204,7 @@ flag:
bits 6-5: delivery type
For tunnel messages:
0x0 = LOCAL, 0x01 = TUNNEL, 0x02 = ROUTER, 0x03 = unused
Note: LOCAL is used for inbound tunnels only, unimplemented for outbound tunnels
For garlic cloves:
0x0 = LOCAL, 0x01 = DESTINATION, 0x02 = ROUTER, 0x03 = TUNNEL
bit 4: delay included? Unimplemented, always 0
@@ -212,7 +213,7 @@ flag:
If 1, the message is fragmented, and the instructions contain a Message ID
bit 2: extended options? Unimplemented, always 0
If 1, extended options are included
bits 1-0: reserved
bits 1-0: reserved, set to 0 for compatibility with future uses
Tunnel ID:
4 bytes
@@ -248,12 +249,15 @@ Extended Options:
size:
2 bytes
Required in a tunnel message; never present in a garlic clove.
The length of the fragment that follows
Valid values: 1 to approx. 960 in a tunnel message; 1 to 64K - 1 in a garlic clove
Valid values: 1 to approx. 960 in a tunnel message
Total length: Typical length is:
3 bytes for LOCAL delivery (garlic clove);
35 bytes for ROUTER / DESTINATION delivery or 39 bytes for TUNNEL delivery (unfragmented or garlic clove);
1 byte for LOCAL delivery (garlic clove);
3 bytes for LOCAL delivery (tunnel message);
35 bytes for ROUTER / DESTINATION delivery or 39 bytes for TUNNEL delivery (unfragmented tunnel message);
33 bytes for ROUTER / DESTINATION delivery or 37 bytes for TUNNEL delivery (garlic clove);
39 bytes for ROUTER delivery or 43 bytes for TUNNEL delivery (first fragment)
</pre>
@@ -280,7 +284,7 @@ frag:
Message ID:
4 bytes
The same ID specified in the first fragment
The same ID specified in the first fragment for this message ID
size:
2 bytes