XMLSWP0 ;(WASH ISC)/CAP-Sliding Window Protocol ;04/17/2002 10:59
;;8.0;MailMan;**45**;Jun 28, 2002;Build 8
REC ;SEE SEND
S X=0 G I
RL ;
R X:$S($D(XMSTIME):XMSTIME,1:15) S Z=$T,(XMRG,D)=X X P("R")
I 'Z S B=B+1 G RL:B<3 S B=0,B(0)=$S($D(B(0)):B(0)+1,1:1) G:B(0)<4&G F:'M,RL D E G ER
S (B,B(0))=0
Y S L=X D SUM I $D(XMLIN),XMLIN>1,X?1"..".E S (XMRG,X)=$E(X,2,999)
R W:15 E S B=B+1 G RL
G Z:L'=".",Z:$P(W,U,2)'=47,Z:$P(W,U,5)'="<<END~OF~FILE>>"
S (D,V)=1,F=0 I $O(W(0)) G F
V S XMRG="." K XMBLOCK F XMLIN=XMLIN+1:1 Q:'$D(^XMB(3.9,XMZ,2,XMLIN))
D SEND Q:D S F=F+1 G ER
Z S D=0 I W'?.".".N1"^"1N.N1"^~".E S (XMRG,X)=W G Y
I S-$P(W,U,2)=0 S D=1 D SEND
I D,L=O G F:$P(W,"@@",2)="<<Ctrl-Packet>>"
I 'D G F:G S F=F+1,ER=1 Q:F>3 W "!@~^NAK^~@!",$C(13) S ER=0 G RL
Q:'$D(XMLIN)!'+W Q:XMLIN=0 S M=$S(L="QUIT":99,1:0),F=0
I XMLIN>1,XMLIN+1-W'=0,W-XMLIN>0 F D=W-1:-1 Q:D<1!$D(^XMB(3.9,XMZ,2,D,0)) S W(D)=""
S D=$S(1-W>0:XMLIN+.001,1:+W) S:D-XMLIN>0 XMLIN=+W K W(+W) I '$D(^XMB(3.9,XMZ,2,D,0)) S ^(0)=XMRG,C=C+$L(XMRG)
I $D(XMINST),$L(XMINST) S I=XMLIN D P
G W:XMLIN#10'=0,W:'$O(W(0)) D E S D="Didn't receive "_$O(W(0)) X P("I")
G F
W G RL:'V,F:$O(W(0)),V
;
;QUIT control
E S F=F+1 S D="Errors ("_F_")" X P("I") Q
Q
SUM ;Calculate S=checksum
I $D(XMOS(0)) X XMOS(0) S S=XMSUM Q
I XMOS["VAX DSM" X "S S=$ZC(%LPC,X)+$L(X)*$L(X)" Q
I XMOS["DSM" X "S S=$ZC(LPC,X)+$L(X)*$L(X)" Q
I XMOS["M/11"!(XMOS["M/VX") X "S S=$ZC(X)+$L(X)*$L(X)" Q
ZSUM S S=$A(X) Q:$L(X)=1 N J S J=1
A S J=J+1 I $L(X)<J K %,%0,%1 S S=S+$L(X)*$L(X) Q
S Y=$A(X,J) F %=256:0 Q:%\4<Y S %=%\2
B S %0=S#%,%=%\2 G A:%=0 S %0=%0\%,%1=Y\% I %1=1 S Y=Y-%
G B:%1+%0=0 I %1'=%0 S:%0=0 S=S+% G B
G B:%0=0 S S=S-%
G B
P N G S G=1,XMLCT=$S($D(XMLCT):XMLCT+$L(XMRG),1:$L(XMRG)) Q:$S(XMLIN<100&(XMLIN#20'=0):1,XMLIN#100'=0:1,1:0) G PROGR^XMLSWP2
I ;Initialize
N %,A,B,C,D,E,F,G,I,L,M,O,P,Q,S,T,Y,Z
I $D(XMS0AJ),XMS0AJ<1 N J S (XMLIN,J)=XMS0AJ
F I=73,83,82 S P($C(I))="I $D(XMLD) S XMTRAN="_$C(34,I,58,32,34)_"_$E(D,1,240) D TRAN^XMLSWP2"
K Z,W,M S ER=0,(A,B,B(0),B(1),C,E,F,G,M,Q,V)=0,(I,L)="",O="!@~^Resynch^~@!1545",W=$S($E(IOST,1,6)="C-MINI":2,1:1)*3,T=$H*86400+$P($H,",",2)-1
I $D(XMBLOCK) G ER:'$D(XMS0AJ) S G=1,XMLIN=$S('$D(XMLIN):0,1:XMLIN),J=XMS0AJ G ER:XMTLER
D LPC:'$D(XMOS) G 1^XMLSWP:X,RL
;
;RE-SYNCH Receiver
F I '$O(W(0)) W "A-OK"_$C(13)_"^432^~"_$C(13) G RL
S (B(0),B)=0,M=50
S (D,X)="!@~^"_+$O(W(0))_"^~@!^^Resynch" D SUM S $P(D,U,4)=S W D,$C(13) X P("S")
G RL
ER S ER=1 Q
SEND S X=W,$P(X,U,4)="" D SUM I S=$P(W,U,4) Q:$P(W,"@@",2)="<<Ctrl-Packet>>" W W_$C(13) Q
S D=0 Q
LPC ;GET CORRECT LPC checksum information
S XMOS=$S($D(^%ZOSF("OS")):^("OS"),1:0) I $D(^("LPC")) S XMOS(0)=^("LPC")
I '$D(XMOS(0)),$D(^XMB(1,1,"LPC")) S XMOS(0)=^("LPC")
I $D(XMOS(0)) S XMOS(0)=XMOS(0)_",XMSUM=Y+$L(X)*$L(X)"
Q
--- Routine Detail --- with STRUCTURED ROUTINE LISTING ---[H[J[2J[HXMLSWP0 2868 printed Apr 09, 2024@21:13:25 Page 2
XMLSWP0 ;(WASH ISC)/CAP-Sliding Window Protocol ;04/17/2002 10:59
+1 ;;8.0;MailMan;**45**;Jun 28, 2002;Build 8
REC ;SEE SEND
+1 SET X=0
GOTO I
RL ;
+1 READ X:$SELECT($DATA(XMSTIME):XMSTIME,1:15)
SET Z=$TEST
SET (XMRG,D)=X
XECUTE P("R")
+2 IF 'Z
SET B=B+1
if B<3
GOTO RL
SET B=0
SET B(0)=$SELECT($DATA(B(0)):B(0)+1,1:1)
if B(0)<4&G
if 'M
GOTO F
GOTO RL
DO E
GOTO ER
+3 SET (B,B(0))=0
Y SET L=X
DO SUM
IF $DATA(XMLIN)
IF XMLIN>1
IF X?1"..".E
SET (XMRG,X)=$EXTRACT(X,2,999)
+1 READ W:15
IF '$TEST
SET B=B+1
GOTO RL
+2 if L'="."
GOTO Z
if $PIECE(W,U,2)'=47
GOTO Z
if $PIECE(W,U,5)'="<<END~OF~FILE>>"
GOTO Z
+3 SET (D,V)=1
SET F=0
IF $ORDER(W(0))
GOTO F
V SET XMRG="."
KILL XMBLOCK
FOR XMLIN=XMLIN+1:1
if '$DATA(^XMB(3.9,XMZ,2,XMLIN))
QUIT
+1 DO SEND
if D
QUIT
SET F=F+1
GOTO ER
Z SET D=0
IF W'?.".".N1"^"1N.N1"^~".E
SET (XMRG,X)=W
GOTO Y
+1 IF S-$PIECE(W,U,2)=0
SET D=1
DO SEND
+2 IF D
IF L=O
if $PIECE(W,"@@",2)="<<Ctrl-Packet>>"
GOTO F
+3 IF 'D
if G
GOTO F
SET F=F+1
SET ER=1
if F>3
QUIT
WRITE "!@~^NAK^~@!",$CHAR(13)
SET ER=0
GOTO RL
+4 if '$DATA(XMLIN)!'+W
QUIT
if XMLIN=0
QUIT
SET M=$SELECT(L="QUIT":99,1:0)
SET F=0
+5 IF XMLIN>1
IF XMLIN+1-W'=0
IF W-XMLIN>0
FOR D=W-1:-1
if D<1!$DATA(^XMB(3.9,XMZ,2,D,0))
QUIT
SET W(D)=""
+6 SET D=$SELECT(1-W>0:XMLIN+.001,1:+W)
if D-XMLIN>0
SET XMLIN=+W
KILL W(+W)
IF '$DATA(^XMB(3.9,XMZ,2,D,0))
SET ^(0)=XMRG
SET C=C+$LENGTH(XMRG)
+7 IF $DATA(XMINST)
IF $LENGTH(XMINST)
SET I=XMLIN
DO P
+8 if XMLIN#10'=0
GOTO W
if '$ORDER(W(0))
GOTO W
DO E
SET D="Didn't receive "_$ORDER(W(0))
XECUTE P("I")
+9 GOTO F
W if 'V
GOTO RL
if $ORDER(W(0))
GOTO F
GOTO V
+1 ;
+2 ;QUIT control
E SET F=F+1
SET D="Errors ("_F_")"
XECUTE P("I")
QUIT
+1 QUIT
SUM ;Calculate S=checksum
+1 IF $DATA(XMOS(0))
XECUTE XMOS(0)
SET S=XMSUM
QUIT
+2 IF XMOS["VAX DSM"
XECUTE "S S=$ZC(%LPC,X)+$L(X)*$L(X)"
QUIT
+3 IF XMOS["DSM"
XECUTE "S S=$ZC(LPC,X)+$L(X)*$L(X)"
QUIT
+4 IF XMOS["M/11"!(XMOS["M/VX")
XECUTE "S S=$ZC(X)+$L(X)*$L(X)"
QUIT
ZSUM SET S=$ASCII(X)
if $LENGTH(X)=1
QUIT
NEW J
SET J=1
A SET J=J+1
IF $LENGTH(X)<J
KILL %,%0,%1
SET S=S+$LENGTH(X)*$LENGTH(X)
QUIT
+1 SET Y=$ASCII(X,J)
FOR %=256:0
if %\4<Y
QUIT
SET %=%\2
B SET %0=S#%
SET %=%\2
if %=0
GOTO A
SET %0=%0\%
SET %1=Y\%
IF %1=1
SET Y=Y-%
+1 if %1+%0=0
GOTO B
IF %1'=%0
if %0=0
SET S=S+%
GOTO B
+2 if %0=0
GOTO B
SET S=S-%
+3 GOTO B
P NEW G
SET G=1
SET XMLCT=$SELECT($DATA(XMLCT):XMLCT+$LENGTH(XMRG),1:$LENGTH(XMRG))
if $SELECT(XMLIN<100&(XMLIN#20'=0)
QUIT
GOTO PROGR^XMLSWP2
I ;Initialize
+1 NEW %,A,B,C,D,E,F,G,I,L,M,O,P,Q,S,T,Y,Z
+2 IF $DATA(XMS0AJ)
IF XMS0AJ<1
NEW J
SET (XMLIN,J)=XMS0AJ
+3 FOR I=73,83,82
SET P($CHAR(I))="I $D(XMLD) S XMTRAN="_$CHAR(34,I,58,32,34)_"_$E(D,1,240) D TRAN^XMLSWP2"
+4 KILL Z,W,M
SET ER=0
SET (A,B,B(0),B(1),C,E,F,G,M,Q,V)=0
SET (I,L)=""
SET O="!@~^Resynch^~@!1545"
SET W=$SELECT($EXTRACT(IOST,1,6)="C-MINI":2,1:1)*3
SET T=$HOROLOG*86400+$PIECE($HOROLOG,",",2)-1
+5 IF $DATA(XMBLOCK)
if '$DATA(XMS0AJ)
GOTO ER
SET G=1
SET XMLIN=$SELECT('$DATA(XMLIN):0,1:XMLIN)
SET J=XMS0AJ
if XMTLER
GOTO ER
+6 if '$DATA(XMOS)
DO LPC
if X
GOTO 1^XMLSWP
GOTO RL
+7 ;
+8 ;RE-SYNCH Receiver
F IF '$ORDER(W(0))
WRITE "A-OK"_$CHAR(13)_"^432^~"_$CHAR(13)
GOTO RL
+1 SET (B(0),B)=0
SET M=50
+2 SET (D,X)="!@~^"_+$ORDER(W(0))_"^~@!^^Resynch"
DO SUM
SET $PIECE(D,U,4)=S
WRITE D,$CHAR(13)
XECUTE P("S")
+3 GOTO RL
ER SET ER=1
QUIT
SEND SET X=W
SET $PIECE(X,U,4)=""
DO SUM
IF S=$PIECE(W,U,4)
if $PIECE(W,"@@",2)="<<Ctrl-Packet>>"
QUIT
WRITE W_$CHAR(13)
QUIT
+1 SET D=0
QUIT
LPC ;GET CORRECT LPC checksum information
+1 SET XMOS=$SELECT($DATA(^%ZOSF("OS")):^("OS"),1:0)
IF $DATA(^("LPC"))
SET XMOS(0)=^("LPC")
+2 IF '$DATA(XMOS(0))
IF $DATA(^XMB(1,1,"LPC"))
SET XMOS(0)=^("LPC")
+3 IF $DATA(XMOS(0))
SET XMOS(0)=XMOS(0)_",XMSUM=Y+$L(X)*$L(X)"
+4 QUIT
