[fa.info-vax] Networking query

info-vax@ucbvax.ARPA (09/15/84)

From: Richard Garland <OC.GARLAND%CU20B@COLUMBIA>

There are several programs running under VMS which allow one to Connect
to another port which may be connected to a dialer or directly to another
system:

	VAXNET - on a decus tape several years back.

	KERMIT - on current (just released spring '84 - mine just came)
		decus tape.  This, in addition to acting like a terminal
		to the remote system, can allow error free file transfer
		if the remote side has kermit.  There is certainly a Unix
		Kermit available (also on the same tape).  Note that Kermit
		on the remote (Unix) end is not necessary for simple terminal
		use.

	VAXDIAL - my submission on current decus tape.  Incorporates Kermit
		and allows various other goddies including support for
		an autodialer and various subprocess control options.

I assume when you said you would connect an asynchronous VAX port to
a SYNCHRONOUS port on your UNIX machine, you meant ASYNCHRONOUS port
on your Unix machine.  I think you probably could never get anything
to work with an ASYNCH connectted to a SYNCH port.   Remember when you
connect the 2 together, use a "null modem" cable: i.e. conductors connected
to pins 2 and 3 reversed.
					Rg
-------

info-vax@ucbvax.ARPA (09/17/84)

From: Richard Garland <OC.GARLAND%CU20B@COLUMBIA>

I have had no problems losing characters.  Trick is to insure that you
have plenty of type-ahead buffer space and use flow control.  In the case
of terminal emulation (passthrough) flow control is usual to have anyway
(since for example VT100's use it in both directions).  When something
like KERMIT is running, flow control is generally turned off and KERMIT
does the packet retries.   I have certainly run these things routinely
at 1200 baud with a dialer, and at 9600 (to an RT11 system rather than
Unix) direct wired.   I would stress unless the outgoing port is set
with type-ahead, and HOSTSYNCH (I think that's the one) there is no
chance.

Another approach I have been told works, is to use Unsolicited IO Mailbox
AST's and read the whole buffer in rather than single character IO. In
that case you just set up a Mailbox AST and wait.   When it comes you can
ascertain the buffer size and you just read it all at once.   Obviously
Type-ahead must be on here as well.

Note the type-ahead buffer size can be increased arbitrarily with the
alternate type-ahead setting.

					Rg
-------

info-vax@ucbvax.ARPA (09/17/84)

From: engvax!KVC@cit-vax

The solution is NOT to do single character QIO's.   See the CALLOUT
program on the Spring '84 DECUS tape.  I have never seen CALLOUT lose
a character at any baud rate up to 9600 on a 750 or 780.  I have never
seen it get stuck in a MWAIT either.  In fact, because of the way it
grabs characters off the line, it is far less of a burden to the system
at 9600 baud than it is at 1200 baud.  It spends less time in KERNEL
mode than any other remote terminal program I have gotten my hands on.
(although, at 1200 baud, it does load the system a bit).

	/Kevin Carosso             engvax!kvc @ CIT-VAX
	 Hughes Aircraft Co.

info-vax@ucbvax.ARPA (09/18/84)

From: lhasa!stew@harvard.ARPA

I use Bob Bruccoleri's VAXNET program for both file transfer and
terminal emulation between my vms vax and other vaxes, both vms and
unix.  Remote file transfer software is available in fortran-IV, fortran-77,
C and lisp.  Most of my work is over a hardwired line at 19.2 Kbaud.
The kernel mode overhead is no greater than typing a file at 19.2 Kbaud,
maybe less.  This is nonnegligible on DZ's, but we use an Able VMZ/32
and have a dozen or so terminals running at 19200 on our 750.

	Stew Rubenstein
	rubenstein@harvard.arpa
	ihnp4!harvard!rubenstein

info-vax@ucbvax.ARPA (09/19/84)

From: politik!paul@BERKELEY (Paul Vixie)

Yes, certainly, if the machine you are talking to suppports XON/XOFF, this
works pretty well.  Even then, however, the typeahead (or altypeahead) buf
can fill up before you get rescheduled to empty it; VMS sends ascii 07 (bell)
for every character that overfloweth (or a complex escape sequence to lock
your keyboard if DEVTYPE=VTxxx).  When I am linked to BSD, it likes to
echo ^G when it receives 07, and the ^G further overflows the buffer, so
more 07s are sent, which causes more ^Gs to be echoed... finally you pull
the plug or stop your process.  wery wery smart design for a typeahead buf.

I will try the unsolicited I-O.  I've already tried every combination of
READSYNCH, HOSTSYNC, and TTSYNCH.  Anything is worth a try.

		Paul Vixie

info-vax@ucbvax.ARPA (09/19/84)

From: politik!paul@BERKELEY (Paul Vixie)

Alas, we are not members of DECUS..  a fond hope for the distant future...  I
do not have access to VAXNET or CALLOUT.  Is the nature of DECUS such that the
programs are public-domain after release?  Can some Kind Soul uucpmail the
source to one or more of these buggers?

	Paul Vixie
	{sun!texsun | ucbvax!mtxinu | dual!ptsfa} !politik!paul

info-vax@ucbvax.ARPA (09/19/84)

From: Mark Johnson <MHJohnson@HI-MULTICS.ARPA>

About connecting between the 780 (running VMS?) and the 11/44 running
Unix....  You indicated that you had an X.25 link from your 780 to the
university network.  Is the 11/44 connected as well and are you running
PSI on the VAX??  If so, why not run SYS$SYSTEM:PSIPAD?  That program is
similar to the DECNET RTPAD which is run when you SET HOST to another
system.  PSIPAD will prompt you for a command which could change PAD
parameters, attach to a remote system or perform a few other actions.

We are using PSI to connect a 780 running VMS to a Multics system (the
one I am composing the message from) and it works ok.  The PSI software
only supports the DTE side of an X.25 connection so our Multics system
acts as the DCE (the "network").  It seems to run pretty efficiently
too.

A final note, the VAX to Multics connection seems to always work ok.
The Multics to VAX connection has a number of "quirks" with echoing,
especially with running EMACS on the VAX.  I don't know if this is a
generic problem, but you might want to know.

  --Mark Johnson <MHJohnson @ HI-MULTICS>

info-vax@ucbvax.ARPA (09/19/84)

From: Richard Garland <OC.GARLAND%CU20B@COLUMBIA>

Anyone can join DECUS (free I think).  Ask your local DEC salesman for
details.  The tapes come out twice a year and are distributed through
a "tree" of volunteers.   I will try to dig up the distribution
list and mail it to you as the sources are too voluminous to try to
mail out.   You could then get a tape or tapes from someone relatively 
local to you.
					Rg
-------

info-vax@ucbvax.ARPA (09/19/84)

From: Richard Garland <OC.GARLAND%CU20B@COLUMBIA>

Paul:
	It occurs to me that a much simpler way to empty the type-ahead
buffer (simpler than the mailbox AST) is to simply do a large read with
timeout with time=0.   This has been suggested to me several times over
the years as the quickest way to say "give me all you got".  There is also
a status type QIO I think which returns the number of characters in the type-
ahead buffer.  Using that you couls then do another read to get everything.
One function I always wanted was "read whole type-ahead buffer" but alas
that is missing.

	Another issue is where your process goes when it is waiting.  You
couls be event flag driven and be in LEF or you could be AST driven and
be in HIB.  The time it takes to reschedule and the probability of being
swapped out may differ in these 2 cases.  I'm not sure which is better
but the stuff I'm using now is AST driven with HIBERs and WAKEs.  The
character passthrough is at program level with just a wakeup being done
at AST level.  Others (e.g. KERMIT) do all the character passthrough
at AST level.  You might try combinations of these things.  I avoided
doing the passthrough at AST level since I wanted to spawn subprocesses
and such depending on special escape codes in the character stream.

					Rg
-------

info-vax@ucbvax.ARPA (09/19/84)

From: Richard Garland <OC.GARLAND%CU20B@COLUMBIA>

Paul:

	Here follows the latest list of sites distributing the VAX
DECUS tapes.   Find one near you and giva a call to arrange a tape
swap.   The last 3 "tapes" were actually 2 volumes each.  Prior to that
there was one tape twice a year.

					Rg

-----------------------

 JOE BINGHAM                   
 MANTECH INTERNATIONAL         
 2320 MILL ROAD                
 ALEXANDIRA VA 22314           
 (703) 838 5600                
     1
     1___ PAM SARMANIAN                 
     1    DECUS US                      
     1    249 NORHTBORO ROAD            
     1    BP02                          
     1    MARLBORO, MA 01752            
     1    CHANGED                       
     1    (DECUS FOR LIBRARY)           
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     1        (        *
     1        (        *___ RICHARD F WRENN               
     1        (        *    WASHINGTON UNIV SHCOOL OF MED 
     1        (        *    DEPARTMENT OF BIOCHEMISTRY    
     1        (        *    CAMPUS BOX 8094               
     1        (        *    ST LOUIS MO 63110             
     1        (        *    (314) 362 3354                
     1        (        *
     1        (        *___ ROBERT W FAIRCHILD            
     1        (             NEBRASKA WESLEYAN UNIVERSITY  
     1        (             50TH & ST PAUL STS            
     1        (             LINCOLN NE 68504              
     1        (             (402) 466 2371 x341           
     1        (             MIDLANDS LUG                  
     1        (
     1        (___ MARGARET H KNOX               
     1             UNIVERSITY OF TEXAS           
     1             COMPUTATION CENTER            
     1             AUSTIN TX 78712               
     1             (512) 471 3241                
     1             AUSTIN MINICOMPUTER LUG       
     1                 +
1    1                 +                                8
     1                 +___ JOHN WILKES                   
     1                 +    TULANE UNIVERSITY COMPUTER LAB
     1                 +    RICHARDSON BLDG               
     1                 +    NEW ORLEANS, LA 70118         
     1                 +    (504) 865 5631                
     1                 +    LA OK TX AR LUG (LOTALUG)     
     1                 +
     1                 +___ SCOTT STEVENSON               
     1                 +    TANO CORPORATION              
     1                 +    4301 POCHE COURT WEST         
     1                 +    NEW ORLEANS, LA 70129         
     1                 +    (504) 254 3500                
     1                 +    S. LA AND MI (SLAM) LUG       
     1                 +
     1                 +___ GENE DUGGER                   
     1                 +    HARDING UNIVERSITY            
     1                 +    BOX 753                       
     1                 +    SEARCY, AR 72143              
     1                 +    (501) 268 6161 X266           
     1                 +    ARKLUG                        
     1                 +
     1                 +___ GUY DUNBAR                    
     1                 +    WM E DAVIS & SONS INC         
     1                 +    37 NW 122ND STREET            
     1                 +    OKLAHOMA CITY OK 73114        
     1                 +    (405) 751 4660                
     1                 +    CENTRAL OK PDP11 LUG          
     1                 +
     1                 +___ PAUL SANDWELL                 
     1                      8611 E 78 ST S                
     1                      TULSA, OK 74133               
     1                      (918) 252 5815                
     1                      TULSA LUG                     
     1
     1___ RAYMOND P BOVET               
          NCAR                          
          PO BOX 3000                   
          BOULDER CO 80307              
          (303) 497 8907                
          ROCKY MOUNTAIN VAX LUG        
              /
              /___ DOUGLAS H THREATT             
              /    BROOKS AIR FORCE BASE         
              /    SCHOOL OF AEROSPACE MEDICINE  
              /    SAM/BRSO                      
              /    SAN ANTONIO TX 78235          
              /    (516) 536 3886                
              /    ALAMO PDP-11 LUG              
              /        \
              /        \___ ERIC S ZIPP                   
              /        \    TDC                           
              /        \    SUITE 130                     
              /        \    624 SIX FLAGS DR              
              /        \    ARLINGTON, TX 76012           
              /        \    (817) 461 1242 X282           
              /        \    DALLAS/FORT WORTH VAX LUG     
              /        \
              /        \
              /        \
1             /        \                                9
              /        \___ ROBERT W HUTCHINSON           
              /        \    DOW CHEMICAL U S A            
              /        \    TEXAS DIVISION                
              /        \    A P BEUTEL BUILDING           
              /        \    FREEPORT TX 77541             
              /        \    (409) 238 1515                
              /        \    BRAZOSPORT LUG                
              /        \
              /        \___ PETER BUREK                   
              /        \    SIVALLS, INC                  
              /        \    PO BOX 2792                   
              /        \    ODESSA, TX 79760              
              /        \    WEST TEXAS LUG                
              /        \
              /        \___ CRAIG BENTSEN                 
              /             CELANESE CHEMICAL CO          
              /             PO BOX 9077                   
              /             CORPUS CHRISTI, TX 78469      
              /             (512) 241 2343 X4342          
              /             COSTAL BEND LUG               
              /
              /___ DAVID TAFF                    
              /    USGS, BOX 25046, M/S 978      
              /    DENVER FEDERAL CENTER         
              /    DENVER, CO 80225              
              /    (303) 234 6479                
              /    DENVER AREA PDP-11 LUG        
              /        ;
              /        ;___ JAMES M LIND                  
              /        ;    INMOS CORPORATION             
              /        ;    P.O. BOX 16000                
              /        ;    COLORADO SPRINGS, CO 80935    
              /        ;    (303) 630 4390                
              /        ;    PIKES PEAK AREA LUG           
              /        ;
              /        ;___ DARWIN L MECHAM               
              /        ;    E G & G IDAHO                 
              /        ;    BOX 1625                      
              /        ;    CF 690                        
              /        ;    IDAHO FALLS ID 83415          
              /        ;    (208) 526 2199                
              /        ;    IDAHO FALLS LUG               
              /        ;
              /        ;___ ROGER L ENGLEMAN              
              /        ;    COMPUTER PARTNERS, INC        
              /        ;    2995 N. COLE, SUITE 140       
              /        ;    BOISE, ID 83704               
              /        ;    (208) 377 2070                
              /        ;    IDAHO LUG                     
              /        ;
              /        ;___ J R WESTMORLAND               
              /             UTAH POWER AND LIGHT CO       
              /             ROOM 184                      
              /             1407 WEST NORTH TEMPLE        
              /             SALT LAKE CITY, UT 84116      
              /             (801) 535 2387                
              /             IMA LUG                       
              /
              /
1             /                                        10
              /___ BRUCE HOBBS                   
              /    AF WEAPONS LAB (ABGT)         
              /    AFWL/ARTF                     
              /    KIRTLAND AFB, NM 87117        
              /    (505) 844 2496                
              /    NEW MEXICO VAX LUG            
              /        I
              /        I___ JANE FURZE                    
              /        I    GENRAD DESIGN                 
              /        I    PO BOX 32183                  
              /        I    PHEONIX, AZ 85064             
              /        I    (602) 266 2032                
              /        I
              /        I___ BOB NORBY                     
              /        I    GTE MOCROCIRCUITS             
              /        I    2000 W 14TH ST                
              /        I    TEMPE,AZ 85281                
              /        I    (602) 968 4431                
              /        I    ARIZONA LUG                   
              /        I
              /        I___ TED FROHLING                  
              /        I    MOUNTAIN STATES ENGINEERS     
              /        I    PO BOX 17960                  
              /        I    INTERSTATE 10 AND VAIL ROAD   
              /        I    TUCSON, AZ 85731              
              /        I    (602) 792 2800                
              /        I    TUCSON LUG                    
              /        I
              /        I___ DOUG GLADDEN                  
              /        I    WHITE SANDS MISSILE RANGE     
              /        I    NR-AD-A                       
              /        I    WSMR NM 88002                 
              /        I    (505) 678 4138                
              /        I    SOUTHERN NM LUG               
              /        I
              /        I___ CLIFFORD P LLOYD              
              /             PO BOX 1912                   
              /             M/S C-81                      
              /             LAS VEGAS, NV 89125           
              /             (702) 295 0392                
              /             EG&G LUG                      
              /
              /___ DICK ADAMS                    
              /    DOUGLAS AIRCRAFT CO           
              /    MAIL CODE 41-56               
              /    3855 LAKEWOOD BLVD            
              /    LONG BEACH CA 90846           
              /    (213) 593 0290                
              /    LA AIRPORT AREA VAX LUG       
              /        i
              /        i___ LARRY LEVINE                  
              /        i    DEPT OF CHEMISTRY             
              /        i    2072 YOUNG                    
              /        i    UCLA                          
              /        i    LOS ANGLES, CA 90024          
              /        i    (213) 825 3288                
              /        i    UCLA LUG                      
              /        i
              /        i
1             /        i                               11
              /        i___ CHARLES SOUTH                 
              /        i    HUGHES RESEARCH LABS          
              /        i    M/S RL86                      
              /        i    3011 MALIBU CANYON ROAD       
              /        i    MALIBU, CA 90265              
              /        i    (213) 456 6411 X402           
              /        i    LOS ANGELES VAX LUG           
              /        i
              /        i___ SANDRA LYDDON                 
              /        i    CHEVRON OIL FIELD RESEARCH    
              /        i    P O BOX 446                   
              /        i    3282 BEACH BLVD               
              /        i    LA HABRA, CA 90631            
              /        i    (213) 694 7132                
              /        i    PACIFIC AREA VAX LUG          
              /        i
              /        i___ RICHARD A BALDWIN             
              /        i    NO CTY COMP SERV              
              /        i    2235 MEYERS AVE               
              /        i    ESCONDIDO CA 92025            
              /        i    (619) 745 6006                
              /        i    SAN DIEGO COMMERCIAL LUG      
              /        i
              /        i___ PAUL WILFONG                  
              /             VERAC, INC                    
              /             SUITE 300                     
              /             10975 TORREYANA               
              /             SAN DIEGO, CA 92121           
              /             (619) 457 5550                
              /             SAN DIEGO PDP-11/VAX LUG      
              /
              /___ ROSEMARY ALLEN                
              /    GENENTECH INC                 
              /    460 POINT SAN BRUNO BLVD      
              /    S. SAN FRANCISCO, CA 94080    
              /    (415) 872 7060                
              /    BAY VAX LUG                   
              /        (
              /        (___ JON FORREST                   
              /        (    DEPARTMENT OF PHYSICS         
              /        (    UNIVERSITY OF CALIFORNIA      
              /        (    SANTA BARBARA, CA 93106       
              /        (    (805) 961 2602                
              /        (    SANTA BARBARA USERS GROUP     
              /        (
              /        (___ MARK VIERS                    
              /        (    NAVAL WEAPONS CENTER          
              /        (    CODE 3115                     
              /        (    CHINA LAKE CA 93555           
              /        (    (619) 939 5118                
              /        (    CHINA LAKE LUG                
              /        (
              /        (___ ALLAN LESLIE VAN LEHN         
              /        (    LAWRENCE LIVERMORE LAB        
              /        (    BLDG 131, ROOM 1378           
              /        (    PO BOX 5504, MAIL STOP L-126  
              /        (    LIVERMORE, CA 94550           
              /        (    (415) 422 6652                
              /        (    LIVERMORE AREA LUG            
1             /        (                               12
              /        (___ ROBERT WALRAVEN               
              /             UNIVERSITY OF CALIFORNIA      
              /             APPLIED SCIENCE               
              /             DAVIS CA 95616                
              /             (916) 752 0360                
              /             U. C. DAVIS LUG               
              /
              /___ STEVE LORENTZEN               
                   UNICOMP CORP                  
                   555 FOURTH & BATTERY BLDG     
                   SEATTLE WA 98121              
                   (206) 223 6453                
                   SEATTLE AREA LUG              
                       )
                       )___ KEVIN DOUGLAS WALKER          
                       )    UNITEK ELECTRONICS, INC       
                       )    2850 PAA STREET, STE 222      
                       )    HONOLULU, HI 96819            
                       )    (808) 836 0877                
                       )    ALOHA LUG                     
                       )
                       )___ ROBERT N PERRY                
                       )    TEKTRONIX                     
                       )    P O BOX 500                   
                       )    M/S 19-333                    
                       )    BEAVERTON OR 97077            
                       )    (503) 627 5410                
                       )    PORTLAND AREA LUG             
                       )
                       )___ ROSS W MILLER                 
                            ONLINE DATA PROCESSING, INC   
                            N 637 HAMILTON                
                            SPOKANE, WA 99202             
                            (509) 484 3400                


-----------------------
-------

info-vax@ucbvax.ARPA (09/21/84)

From: politik!paul@BERKELEY (Paul Vixie)

Richard:
	Thanks for the DECUS listing.  If it is indeed free, I might be able
to get my company to join (funny: I asked for 6MB of RAM for our site and
got it the same day, but decus is a "nonessential").
	READ?BLK!IO$M_TIMED with TIME=0 *does* do a "read whole typeahead
buffer".  And yes, I do make use of "how many characters are there in the
typeahead buffer" in another program.  The trouble with either of these
approaches is that they depend on polling, which usually means echo-delay
which drives me bananas.  Still, I suppose I could wait for a single-char
AST and then empty the whole buffer in one swipe...  I'll try that.
	My currentv approach has been to get the characters and put them
into a FIFO (two of them: one outgoing, one incoming) that is read in non-
AST mode following a WAKE call from the AST.  Works ok unless the system
is heavily loaded in which case the old "^G" <-> "\007" wars begin...  Possibly
with the two ideas taken together I can make things work.
	To the person who sent me TTLINK:  thank you, but it doesn't work
well on my heavily loaded development 750.  Drops characters.  Better than
Bell Wars, but still not quite on the spot.  Very nice code, though.

		Paul Vixie

info-vax@ucbvax.ARPA (09/28/84)

From: decvax!mcnc!akgua!abnjh!tptest@BERKELEY

All DECUS software is public domain and may be used for
any non-profit purposes, i.e., you can't take a DECUS
program and sell it for profit.  See your local DEC
representative for the address and an application.  DECUS
membership is free.  Programs are distributed for the
cost of tape and copying.