Artifact d037a2026ee353212ee6aa20a29d4bfe1dd82b40:
- File doc/net2o-ft.lyx — part of check-in [fa13d429bf] at 2011-07-23 20:24:20 on branch trunk — Doc typoes corrected, LyX 2.0 used. (user: bernd.paysan@gmx.de size: 15957)
#LyX 2.0 created this file. For more info see http://www.lyx.org/ \lyxformat 413 \begin_document \begin_header \textclass beamer \begin_preamble \usetheme{Warsaw} % or ... \setbeamercovered{transparent} % or whatever (possibly just delete it) \end_preamble \use_default_options false \maintain_unincluded_children false \language ngerman \language_package default \inputencoding auto \fontencoding global \font_roman times \font_sans default \font_typewriter default \font_default_family default \use_non_tex_fonts false \font_sc false \font_osf false \font_sf_scale 100 \font_tt_scale 100 \graphics default \default_output_format default \output_sync 0 \bibtex_command default \index_command default \paperfontsize default \spacing single \use_hyperref false \papersize default \use_geometry true \use_amsmath 2 \use_esint 0 \use_mhchem 1 \use_mathdots 1 \cite_engine basic \use_bibtopic false \use_indices false \paperorientation portrait \suppress_date false \use_refstyle 0 \index Stichwortverzeichnis \shortcut idx \color #008000 \end_index \secnumdepth 2 \tocdepth 2 \paragraph_separation indent \paragraph_indentation default \quotes_language german \papercolumns 1 \papersides 1 \paperpagestyle default \tracking_changes false \output_changes false \html_math_output 0 \html_css_as_file 0 \html_be_strict false \end_header \begin_body \begin_layout Title net2o: Fort(h)schritte \begin_inset Argument status open \begin_layout Plain Layout net2o \end_layout \end_inset \end_layout \begin_layout Author Bernd Paysan \end_layout \begin_layout Date Forth--Tagung 2011, Goslar \end_layout \begin_layout BeginFrame Outline \end_layout \begin_layout Standard \begin_inset CommandInset toc LatexCommand tableofcontents \end_inset \end_layout \begin_layout EndFrame \end_layout \begin_layout Section Motivation \end_layout \begin_layout Subsection Jetzt doch Semi--Sabbatical \end_layout \begin_layout BeginFrame Hirntraining, um wieder richtig in Form zu kommen \end_layout \begin_layout Itemize Ohne Aufgabe kein Spaß im Leben \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Der Frust im Job hat sich so zugespitzt, dass ich gegangen bin --- Sabbatical! \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Wieder Status--Report und Todo--Liste \end_layout \begin_layout EndFrame \end_layout \begin_layout Subsection Geändert: Packet Header \end_layout \begin_layout BeginFrame Geändert: Packet Header \end_layout \begin_layout Standard \align center \begin_inset Tabular <lyxtabular version="3" rows="7" columns="2"> <features tabularvalignment="middle"> <column alignment="center" valignment="top" width="0"> <column alignment="center" valignment="top" width="0"> <row> <cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none"> \begin_inset Text \begin_layout Plain Layout \end_layout \end_inset </cell> <cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" 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\begin_layout Plain Layout \emph on Address \end_layout \end_inset </cell> <cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none"> \begin_inset Text \begin_layout Plain Layout \emph on 2/8 \end_layout \end_inset </cell> </row> <row> <cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none"> \begin_inset Text \begin_layout Plain Layout \emph on Junk \end_layout \end_inset </cell> <cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none"> \begin_inset Text \begin_layout Plain Layout \emph on 0/8 \end_layout \end_inset </cell> </row> <row> <cell alignment="center" valignment="top" topline="true" leftline="true" usebox="none"> \begin_inset Text \begin_layout Plain Layout \emph on Data \end_layout \end_inset </cell> <cell alignment="center" valignment="top" topline="true" leftline="true" rightline="true" usebox="none"> \begin_inset Text \begin_layout Plain Layout \emph on 32/64/128/256/512/1k/2k/4k \end_layout \end_inset </cell> </row> <row> <cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" usebox="none"> \begin_inset Text \begin_layout Plain Layout checksum \end_layout \end_inset </cell> <cell alignment="center" valignment="top" topline="true" bottomline="true" leftline="true" rightline="true" usebox="none"> \begin_inset Text \begin_layout Plain Layout \emph on 0/8 \end_layout \end_inset </cell> </row> </lyxtabular> \end_inset \end_layout \begin_layout Standard \align center \begin_inset Graphics filename ../../../doc/euroforth2009/internet-2.0/header64.fig lyxscale 50 scale 25 \end_inset \end_layout \begin_layout Standard \align center \begin_inset Graphics filename ../../../doc/euroforth2009/internet-2.0/header16.fig lyxscale 50 scale 25 \end_inset \end_layout \begin_layout EndFrame \end_layout \begin_layout Section Implementierungs--Status \end_layout \begin_layout BeginFrame Ein Anfang ist gemacht \end_layout \begin_layout Itemize net2o über UDP (IPv4/IPv6) als \begin_inset Quotes gld \end_inset physical layer \begin_inset Quotes grd \end_inset \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize UDP stellt ein einfaches Interface zur Verfügung, das auch viele Verbindungen gleichzeitig beherrscht. \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize IPv4 komplett, IPv6 bisher nur ohne Packet fragmentation \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Zwei Teile: Packet--Handler und Kommando--Interpreter \end_layout \begin_layout EndFrame \end_layout \begin_layout Subsection Datenstrukturen \end_layout \begin_layout BeginFrame Switching \end_layout \begin_layout Itemize Ein Hash wird benutzt, um IP--Addressen zu switchen: Hash=Prefix \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Noch zu tun: Kolissionen mit längerem Prefix vermeiden \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Prefixgranularität: Byte \end_layout \begin_deeper \begin_layout Pause \end_layout \begin_layout Description MSB=0 Direkt routebar \end_layout \begin_layout Description MSB=1 Längerer Prefix, nächstes Byte angucken \end_layout \end_deeper \begin_layout EndFrame \end_layout \begin_layout BeginFrame Shared Memory \end_layout \begin_layout Itemize Map von Adresse zum Kontext funktioniert \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Context enthält \end_layout \begin_deeper \begin_layout Pause \end_layout \begin_layout Itemize Returnaddresse \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Commando--Buffer \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize cryptographic keys \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Data&Code Maps \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Achnowledge--Informationen \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize und noch mehr (noch nicht fertig) \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \end_deeper \begin_layout EndFrame \end_layout \begin_layout BeginFrame Kommandos \end_layout \begin_layout Itemize UTF--8--encodedete Kommandos: Einfaches ist ASCII, ein Byte, komplexeres kann länger sein \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Kommandos in 8--Byte--Blöcke gepackt \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Literals (8 Bytes) und Strings in Kommandostrom eingebaut \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Kommando--Assembler erlaubt direktes Einbinden in normalen Forth--Code 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\begin_layout LyX-Code net2o-code s \begin_inset Quotes erd \end_inset This is a test \begin_inset Quotes erd \end_inset $, type \end_layout \begin_layout LyX-Code '!' char, emit cr end-code \end_layout \begin_layout LyX-Code lserver 0 send-cmd \end_layout \end_deeper \begin_layout BeginFrame Testcase 2 \end_layout \begin_layout ExampleBlock \begin_inset ERT status open \begin_layout Plain Layout { \end_layout \end_inset Datei--Transfer \begin_inset ERT status open \begin_layout Plain Layout } \end_layout \end_inset \end_layout \begin_deeper \begin_layout LyX-Code net2o-code new-context \end_layout \begin_layout LyX-Code $80000 lit, $80000 lit, new-map \end_layout \begin_layout LyX-Code $10000 lit, $1000 lit, new-code-map \end_layout \begin_layout LyX-Code $80000 lit, $80000 lit, new-data \end_layout \begin_layout LyX-Code $10000 lit, $1000 lit, new-code \end_layout \begin_layout LyX-Code s" net2o.fs" $, r/o lit, 0 lit, open-file \end_layout \begin_layout LyX-Code s" file size: " $, type 0 lit, file-size . cr \end_layout \begin_layout LyX-Code 0 lit, slurp-chunk send-chunks \end_layout \begin_layout LyX-Code 0 lit, close-file \end_layout \begin_layout LyX-Code s" doc/internet-2.0.pdf" $, r/o lit, 0 lit, open-file \end_layout \begin_layout LyX-Code s" file size: " $, type 0 lit, file-size . cr \end_layout \begin_layout LyX-Code 0 lit, slurp-chunk send-chunks \end_layout \begin_layout LyX-Code 0 lit, close-file \end_layout \begin_layout LyX-Code end-code \end_layout \begin_layout LyX-Code lserver 0 send-cmd \end_layout \end_deeper \begin_layout BeginFrame Testcase 3 \end_layout \begin_layout ExampleBlock \begin_inset ERT status open \begin_layout Plain Layout { \end_layout \end_inset Client Loop \begin_inset ERT status open \begin_layout Plain Layout } \end_layout \end_inset \end_layout \begin_deeper \begin_layout LyX-Code $80000 $80000 n2o:new-map \end_layout \begin_layout LyX-Code $10000 $1000 n2o:new-code-map \end_layout \begin_layout LyX-Code $80000 $80000 n2o:new-data \end_layout \begin_layout LyX-Code $10000 $1000 n2o:new-code \end_layout \begin_layout LyX-Code $80000 $80000 net2o:unacked \end_layout \begin_layout LyX-Code client-loop \end_layout \end_deeper \begin_layout EndFrame \end_layout \begin_layout Section Todo-List \end_layout \begin_layout Subsection Flusskontrolle: Zuverlässigkeit und Bandbreite \end_layout \begin_layout BeginFrame Flusskontrolle \end_layout \begin_layout Itemize UDP ist per Definition unzuverlässig \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Zuverlässigkeit durch Resend--Kommandos --- größtenteils implementiert. \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Flusskontrollen--Idee: PLL--basiert, Auswertung der \begin_inset Formula $\Delta t$ \end_inset s ist eingebaut, Senderlimitierung fehlt noch. \end_layout \begin_layout EndFrame \end_layout \begin_layout Subsection Cryptography \end_layout \begin_layout 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eine Grundfunktion sein \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Events beim Server registrieren statt ständiges Pollen \end_layout \begin_layout Section* Summary \end_layout \begin_layout BeginFrame Summary \end_layout \begin_layout Itemize Es gibt schon fast 1000 Zeilen Code \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Immer noch viel zu tun, aber dafür jetzt auch mehr Zeit \end_layout \begin_deeper \begin_layout Pause \end_layout \end_deeper \begin_layout Itemize Wenn's fertig ist: RFC, IETF--Diskussionen, Präsentation auf Netzwerk--orientier ten Konferenzen \end_layout \begin_layout EndFrame \end_layout \begin_layout Section* \start_of_appendix Appendix \end_layout \begin_layout Subsection* For Further Reading \end_layout \begin_layout BeginFrame \begin_inset ERT status open \begin_layout Plain Layout [allowframebreaks] \end_layout \end_inset For Further Reading \end_layout \begin_layout Bibliography \labelwidthstring Literaturverzeichnis \begin_inset CommandInset bibitem LatexCommand bibitem key "In20" \end_inset Bernd Paysan \begin_inset ERT status collapsed \begin_layout Plain Layout \backslash newblock \end_layout \end_inset \emph on Internet 2.0 \emph default \begin_inset ERT status collapsed \begin_layout Plain Layout \backslash newblock \end_layout \end_inset \begin_inset Flex URL status open \begin_layout Plain Layout http://www.jwdt.com/~paysan/internet-2.0.html \end_layout \end_inset \end_layout \begin_layout EndFrame \end_layout \end_body \end_document