64 lines
2.7 KiB
Mathematica
64 lines
2.7 KiB
Mathematica
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XMLSWP0 ;(WASH ISC)/CAP-Sliding Window Protocol ;04/17/2002 10:59
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;;8.0;MailMan;;Jun 28, 2002
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REC ;SEE SEND
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S X=0 G I
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RL ;
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R X:$S($D(XMSTIME):XMSTIME,1:15) S Z=$T,(XMRG,D)=X X P("R")
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I 'Z S B=B+1 G RL:B<3 S B=0,B(0)=$S($D(B(0)):B(0)+1,1:1) G:B(0)<4&G F:'M,RL D E G ER
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S (B,B(0))=0
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Y S L=X D SUM I $D(XMLIN),XMLIN>1,X?1"..".E S (XMRG,X)=$E(X,2,999)
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R W:15 E S B=B+1 G RL
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G Z:L'=".",Z:$P(W,U,2)'=47,Z:$P(W,U,5)'="<<END~OF~FILE>>"
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S (D,V)=1,F=0 I $O(W(0)) G F
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V S XMRG="." K XMBLOCK F XMLIN=XMLIN+1:1 Q:'$D(^XMB(3.9,XMZ,2,XMLIN))
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D SEND Q:D S F=F+1 G ER
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Z S D=0 I W'?.".".N1"^"1N.N1"^~".E S (XMRG,X)=W G Y
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I S-$P(W,U,2)=0 S D=1 D SEND
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I D,L=O G F:$P(W,"@@",2)="<<Ctrl-Packet>>"
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I 'D G F:G S F=F+1,ER=1 Q:F>3 W "!@~^NAK^~@!",$C(13) S ER=0 G RL
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Q:'$D(XMLIN)!'+W Q:XMLIN=0 S M=$S(L="QUIT":99,1:0),F=0
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I XMLIN>1,XMLIN+1-W'=0,W-XMLIN>0 F D=W-1:-1 Q:D<1!$D(^XMB(3.9,XMZ,2,D,0)) S W(D)=""
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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)
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I $D(XMINST),$L(XMINST) S I=XMLIN D P
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G W:XMLIN#10'=0,W:'$O(W(0)) D E S D="Didn't receive "_$O(W(0)) X P("I")
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G F
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W G RL:'V,F:$O(W(0)),V
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;
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;QUIT control
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E S F=F+1 S D="Errors ("_F_")" X P("I") Q
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Q
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SUM ;Calculate S=checksum
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I $D(XMOS(0)) X XMOS(0) S S=XMSUM Q
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I XMOS["VAX DSM" S S=$ZC(%LPC,X)+$L(X)*$L(X) Q
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I XMOS["DSM" S S=$ZC(LPC,X)+$L(X)*$L(X) Q
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I XMOS["M/11"!(XMOS["M/VX") S S=$ZC(X)+$L(X)*$L(X) Q
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ZSUM S S=$A(X) Q:$L(X)=1 N J S J=1
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A S J=J+1 I $L(X)<J K %,%0,%1 S S=S+$L(X)*$L(X) Q
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S Y=$A(X,J) F %=256:0 Q:%\4<Y S %=%\2
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B S %0=S#%,%=%\2 G A:%=0 S %0=%0\%,%1=Y\% I %1=1 S Y=Y-%
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G B:%1+%0=0 I %1'=%0 S:%0=0 S=S+% G B
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G B:%0=0 S S=S-%
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G B
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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
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I ;Initialize
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N %,A,B,C,D,E,F,G,I,L,M,O,P,Q,S,T,Y,Z
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I $D(XMS0AJ),XMS0AJ<1 N J S (XMLIN,J)=XMS0AJ
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F I=73,83,82 S P($C(I))="I $D(XMLD) S XMTRAN="_$C(34,I,58,32,34)_"_$E(D,1,240) D TRAN^XMLSWP2"
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K Z,W,M S ER=0,(A,B,B(0),B(1),C,E,F,G,M,Q,V)=0,(I,L)="",O="!@~^Resynch^~@!1545",W=$S($E(IOST,1,6)="C-MINI":2,1:1)*3,T=$H*86400+$P($H,",",2)-1
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I $D(XMBLOCK) G ER:'$D(XMS0AJ) S G=1,XMLIN=$S('$D(XMLIN):0,1:XMLIN),J=XMS0AJ G ER:XMTLER
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D LPC:'$D(XMOS) G 1^XMLSWP:X,RL
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;
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;RE-SYNCH Receiver
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F I '$O(W(0)) W "A-OK"_$C(13)_"^432^~"_$C(13) G RL
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S (B(0),B)=0,M=50
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S (D,X)="!@~^"_+$O(W(0))_"^~@!^^Resynch" D SUM S $P(D,U,4)=S W D,$C(13) X P("S")
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G RL
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ER S ER=1 Q
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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
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S D=0 Q
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LPC ;GET CORRECT LPC checksum information
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S XMOS=$S($D(^%ZOSF("OS")):^("OS"),1:0) I $D(^("LPC")) S XMOS(0)=^("LPC")
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I '$D(XMOS(0)),$D(^XMB(1,1,"LPC")) S XMOS(0)=^("LPC")
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I $D(XMOS(0)) S XMOS(0)=XMOS(0)_",XMSUM=Y+$L(X)*$L(X)"
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Q
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