Merge branch 'develop'

[nncp.git] / doc / pkt.texi

diff --git a/doc/pkt.texi b/doc/pkt.texi
index d216f93e96d9d05e614c30f9f39a343b833ab552..93841e107234eb6e82e8e1abf71be7c18b50a4df 100644 (file)
--- a/doc/pkt.texi
+++ b/doc/pkt.texi
@@ -28,10 +28,10 @@ drive.
 @headitem @tab XDR type @tab Value
 @item Magic number @tab
     8-byte, fixed length opaque data @tab
-    @verb{|N N C P P 0x00 0x00 0x02|}
+    @verb{|N N C P P 0x00 0x00 0x03|}
 @item Payload type @tab
     unsigned integer @tab
-    0 (file), 1 (freq), 2 (exec), 3 (transition)
+    0 (file), 1 (freq), 2 (exec), 3 (transition), 4 (exec-fat)
 @item Niceness @tab
     unsigned integer @tab
     1-255, preferred packet @ref{Niceness, niceness} level
@@ -50,16 +50,18 @@ drive.
 
 Path has fixed size because of hiding its actual length -- it is
 valuable metadata. Payload is appended to the header -- it is not stored
-as XDR field, because most XDR libraries will store all that data in the
-memory.
+as XDR field, because XDR has no ability to pass more than 4 GiB of
+opaque data. Moreover most XDR libraries store fields in the memory in
+practice.
 
 Depending on the packet's type, payload could store:
 
 @itemize
 @item File contents
 @item Destination path for freq
-@item @url{http://zlib.net/, zlib} compressed exec body
+@item @url{https://facebook.github.io/zstd/, Zstandard} compressed exec body
 @item Whole encrypted packet we need to relay on
+@item Uncompressed exec body
 @end itemize
 
 Also depending on packet's type, niceness level means: