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TextFile

% run this through SLiTeX with the appropriate wrapper

\f

\begin{bwslide}
\part	{THE FILE PROTOCOL}

\begin{nrtc}\bf
\item	ELEMENTS OF PROCEDURE

\item	DEFINITION AND ENCODING OF DATA UNITS

\item	FTAM USE OF LOWER-LAYER SERVICES

\item	EXAMPLES
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\part*	{ELEMENTS OF PROCEDURE}%%%\bf

\begin{nrtc}
\item	THE FILE SERVICE PROVIDER EXECUTES THE FILE PROTOCOL

\item	THE PROVIDER IS ACTUALLY TWO PEER ENTITIES

\item	ASSOCIATION CONTROL IS USED TO MANAGE THE END-TO-END ASSOCIATION
	BETWEEN FILE USERS

\item	PRESENTATION SERVICES ARE USED TO EXCHANGE DATA IN A
	MACHINE-INDEPENDENT FASHION

\item	COMMITMENT, CONCURRENCY AND RECOVERY (CCR) SERVICES CAN ALSO BE USED
	FOR THE FILE TRANSFER CLASS

\item	ALL DATA UNITS (FPDUs and FADUs) ARE EXPRESSED IN TERMS OF
	ABSTRACT SYNTAX NOTATION ONE (ASN.1)
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{FILE SERVICE REQUESTS}

\begin{nrtc}
\item	THE VALIDITY OF THE REQUEST IS VERIFIED
    \begin{nrtc}
    \item	i.e., CHECK NEGOTIATED FUNCTIONAL UNITS, INNER-MOST REGIME,
		INTERNAL STATE, and so on
    \end{nrtc}

\item	THE PARAMETERS OF THE REQUEST ARE ENCODED IN A
	FILE PROTOCOL DATA UNIT (FPDU)

\item	THE FPDU IS GIVEN TO THE PRESENTATION PROVIDER FOR DELIVERY
	TO THE REMOTE SYSTEM

\item	THE PROVIDER UPDATES ITS INTERNAL STATE
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{ON RECEIPT OF A FILE PROTOCOL DATA UNIT}

\begin{nrtc}
\item	THE VALIDITY OF THE FPDU IS VERIFIED
    \begin{nrtc}
    \item	i.e., CHECK NEGOTIATED FUNCTIONAL UNITS, INNER-MOST REGIME,
		INTERNAL STATE,	and so on
    \end{nrtc}

\item	THE PARAMETERS OF THE FPDU ARE ENCODED IN A SERVICE .INDICATION
	OR .CONFIRMATION EVENT

\item	THE EVENT IS GIVEN TO THE FILE SERVICE USER

\item	THE PROVIDER UPDATES ITS INTERNAL STATE

\item	FADUs (DETERMINED BY PRESENTATION CONTEXT) ARE GIVEN DIRECTLY TO THE
	USER
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\part*	{DEFINITION AND ENCODING OF DATA UNITS}\bf

\begin{nrtc}
\item	TWO KINDS OF DATA UNITS ARE EXCHANGED IN THE FILE SERVICE

\item	FILE PROTOCOL DATA UNITS (FPDUs) ARE EXCHANGED WITHIN THE
	FILE SERVICE PROVIDER

\item	FILE ACCESS DATA UNITS (FADUs) ARE EXCHANGED BY THE USERS OF THE
	FILE SERVICE
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{ABSTRACT SYNTAX NOTATION ONE (ASN.1)}

\begin{nrtc}
\item	ABSTRACT SYNTAX NOTATION ONE (ASN.1) IS USED TO DESCRIBE THE STRUCTURE
	AND ENCODING OF DATA UNITS

\item	ASN.1 IS A DATA STRUCTURE DESCRIPTION LANGUAGE AND AN ENCODING
	SPECIFICATION
    \begin{nrtc}
    \item	IT IS USED TO DESCRIBE DATA STRUCTURES INDEPENDENT OF A
		GIVEN MACHINE'S INTERNAL REPRESENTATION

    \item	IT ALSO DEFINES HOW TO UNIVERSALLY ENCODE THOSE STRUCTURES
		AS THEY ARE TRANSMITTED FROM ONE MACHINE TO ANOTHER
    \end{nrtc}
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\part*	{FTAM USE OF LOWER-LAYER SERVICES}\bf

\begin{nrtc}
\item	ASSOCIATION CONTROL

\item	PRESENTATION SERVICES

\item	SESSION SERVICES

\item	COMMITMENT, CONCURRENCY AND RECOVERY
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{FTAM USE OF LOWER-LAYER SERVICES (cont.)}

\vskip.5in
\diagram[p]{figure7}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{ASSOCIATION CONTROL}

\begin{nrtc}
\item	ASSOCIATION CONTROL IS USED BY
    \begin{nrtc}
    \item	FTAM REGIME ESTABLISHMENT SERVICE: A-ASSOCIATE

    \item	FTAM REGIME TERMINATION SERVICE: A-RELEASE

    \item	FTAM REGIME ABORT SERVICE: A-(U-)ABORT, A-P-ABORT
    \end{nrtc}

\item	NOTE THAT ASSOCIATION CONTROL MAPS DIRECTLY ONTO PRESENTATION
	SERVICES
    \begin{nrtc}
    \item	A PART OF THE APPLICATION LAYER
		(SO-CALLED COMMON APPLICATION SERVICE ENTITY)
    \end{nrtc}
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{ADDRESSES AND APPLICATION ENTITY TITLES}

\begin{nrtc}
\item	INITIATOR PROVIDES
    \begin{nrtc}
    \item	DESCRIPTION OF FILE SERVICE DESIRED,
		e.g., ``gremlin-filestore''
    \end{nrtc}
        
\item	AND (SOMEHOW) PERFORMS TWO MAPPINGS
    \begin{nrtc}
    \item	DESCRIPTOR TO APPLICATION ENTITY TITLE PROVIDING SERVICE:
		CURRENTLY AN OBJECT IDENTIFIER

    \item	AET TO PRESENTATION ADDRESS:
		CURRENTLY P-SELECTOR, S-SELECTOR, T-SELECTOR, AND A LIST OF
		NETWORK ADDRESSES
    \end{nrtc}

\item	IN THE FUTURE, DIRECTORY SERVICES ARE USED
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{PRESENTATION SERVICES}

\begin{nrtc}
\item	PRESENTATION SERVICES ARE USED BY THE REMAINING FTAM REGIMES: P-DATA

\item	FURTHER
    \begin{nrtc}
    \item	THE FILE OPEN SERVICE MAY REQUIRE: P-ALTER-CONTEXT

    \item	THE CANCEL DATA SERVICE REQUIRES: P-RESYNCHRONIZE

    \item	THE CHECKPOINT SERVICE REQUIRES: P-SYNC-MINOR

    \item	THE RESTART SERVICE REQUIRES: P-ALTER-CONTEXT
    \end{nrtc}

\item	IN ADDITION, ASSOCIATION CONTROL REQUIRES:
	P-CONNECT, P-RELEASE, P-U-ABORT, P-P-ABORT
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{PRESENTATION CONTEXTS}

\begin{nrtc}
\item	ASSOCIATION CONTROL PCI (PRESENTATION CONTEXT INFORMATION)

\item	FTAM PCI

\item	IF THE PRESENTATION CONTEXT MANAGEMENT SERVICE IS UNAVAILABLE, THEN
    \begin{nrtc}
    \item	FTAM REQUESTS A CONTEXT FOR EACH DOCUMENT TYPE THAT MIGHT BE
		EXCHANGED
    \end{nrtc}

\item	FTAM PROVIDES BOTH THE ABSTRACT SYNTAX AND TRANSFER SYNTAX
	OF EACH CONTEXT
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{COMMITMENT, CONCURRENCY AND RECOVERY}

\begin{nrtc}
\item	IF THE FILE TRANSFER CLASS IS SELECTED, AS A USER OPTION,
	THE ISO COMMITMENT, CONCURENCY, AND RECOVERY PROTOCOL CAN BE USED

\item	NEEDED FOR ATOMIC TRANSFER OF FILES (BUT NOT REALLY NEEDED FOR
	RESUMPTION OF FILE TRANSFER)

\item	PERSONAL OPINION
    \begin{nrtc}
    \item	A TREMENDOUS ``OVERKILL'' FOR ATOMIC FILE TRANSFER

    \item	NOT REALLY WELL-DEFINED AT THIS POINT
    \end{nrtc}
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\ctitle	{SESSION SERVICES}

\begin{nrtc}
\item	THE FILE PROVIDER DOES NOT USE SESSION SERVICES DIRECTLY

\item	HOWEVER MOST PRESENTATION SERVICES MAP DIRECTLY ONTO SESSION SERVICES

\item	HENCE: AT LEAST S-CONNECT, S-DATA, S-RELEASE, S-U-ABORT, AND S-P-ABORT
	ARE REQUIRED

\item	AND OPTIONALLY: S-TYPED-DATA, S-RESYNCHRONIZE and S-SYNC-MINOR ARE
	ALSO REQUIRED
\end{nrtc}
\end{bwslide}


\f

\begin{bwslide}
\part*	{EXAMPLES}\small

\begin{verbatim}
wrote F-INITIALIZE-request, context 1
{
   {
      service-class transfer-and-management-class,
      functional-units { read, write, limited-file-management,
                         enhanced-file-management },
      attribute-groups { storage, security },
      contents-type-list {
         { document-types { 1.0.8571.6.3, 1.17.3.6.1, 1.17.3.6.8 } }
      },
      initiator-identity "ANON",
      filestore-password { "mrose" }
   }
}
\end{verbatim}
\end{bwslide}


\f

\begin{bwslide}\small
\begin{verbatim}
wrote AARQapdu, context 9
{
   protocolVersion { version1 },
   calledAEtitle 1.17.4.3.1,
   applicationContextName 1.0.8571.2.1,
   userInformation {
      data-value-identifier { indirect-reference 1 },
      encodings {
         single-ASN1-type {
            [3] '03'H,
            [4] '0136'H,
            [5] '06c0'H,
            [7] {
               [0] {
                  [APPLICATION 7] '28c27b0603'H,
                  [APPLICATION 7] '39030601'H,
                  [APPLICATION 7] '39030608'H
               }
            },
            [APPLICATION 4] "ANON",
            [APPLICATION 6] { "mrose" }
         }
      }
   }
}
\end{verbatim}
\end{bwslide}


\f

\begin{bwslide}\small
\begin{verbatim}
wrote CPppdu
{
   { nonx410mode },
   [2] {
      [2] TRUE,
      [3] {
         { 1, 1.0.8571.1.1, { 1.0.8825 } },
         { 3, 1.0.8571.2.4, { 1.0.8571.3.4 } },
         { 5, 1.17.3.2.0, { 1.17.3.3.0 } },
         { 7, 1.17.3.2.2, { 1.17.3.3.0 } },
         { 9, 1.0.8650.2.1, { 1.0.8825 } }
      },
      [4] { 1.0.8571.1.1, 1.0.8825 },
      [5] { version-1 },
      {
         {
            {
               data-value-identifier { indirect-reference 9 },
               encodings {
                  single-ASN1-type {
                     [0] '0780'H,
                     [1] { 1.17.4.3.1 },
                     [3] { 1.0.8571.2.1 },
\end{verbatim}
\end{bwslide}


\f

\begin{bwslide}\small
\begin{verbatim}
                     [4] {
                        [UNIVERSAL 8] {
                           1,
                           [0] {
                              [0] {
                                 [3] '03'H,
                                 [4] '0136'H,
                                 [5] '06c0'H,
                                 [7] {
                                    [0] {
                                       [APPLICATION 7] '28c27b0603'H,
                                       [APPLICATION 7] '39030601'H,
                                       [APPLICATION 7] '39030608'H
                                    }
                                 },
                                 [APPLICATION 4] "ANON",
                                 [APPLICATION 6] { "mrose" }
                              }
                           }
                        }
                     }
                  }
               }
            }
         }
      }
   }
}
\end{verbatim}
\end{bwslide}


\f

\begin{bwslide}\small
\begin{verbatim}
---> (: dump of SPDU 0xb8404, errno=0xffffffff mask=0x409f
---> LI/ 281
---> CODE/ CONNECT
---> REFERENCE/ <USER "gremlin", COMMON  "870601045854Z", ADDITIONAL 0>
---> OPTIONS/ 0x0<>
---> TSDU/ INITIATOR: 65528, RESPONDER: 65528
---> VERSION/ 0x1
---> ISN/ 1
---> REQUIREMENTS/ 0x22<DUPLEX,RESYNC>
---> USER DATA/ 225 bytes
---> )
\end{verbatim}
\end{bwslide}


\f

\begin{bwslide}
\part*	{SUMMARY}\bf

\begin{nrtc}
\item	THE FILE SERVICE PROVIDER IS A ``STATE MACHINE'' COMPOSED OF TWO
	PEERS EXECUTING THE FILE PROTOCOL

\item	IN ADDITION TO RESOURCES ON THEIR HOST SYSTEMS,
	THEY USE THE ASSOCIATION CONTROL AND PRESENTATION SERVICES

\item	ASN.1 IS USED TO DEFINE AND ENCODE THE DATA UNITS WHICH ARE EXCHANGED
\end{nrtc}
\end{bwslide}