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!SocketMgr/!Help

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk: Home » Archimedes archive » Archimedes World » archimedes_world_volume_15_issue_1_scp.adf » !OpenFiles_OpenFiles
Filename: !SocketMgr/!Help
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File size: 0F9D bytes
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Exec address: 0000
File contents
____________________________________________________________________________

                            � S o c k e t M g r �

                           Internet Socket Remover

                          by David Thomas, � 1996-7
                         version 1.01 (10 Feb 1997)
____________________________________________________________________________


 Purpose ___________________________________________________________________

  SocketMgr is a utility for removing Internet Sockets which are left
unremoved when an application crashes.  If you are running a server program
and it terminates without first closing its listening socket then the socket
remains in use indefinitely.  This is annoying with servers that are
expected to run on a specific port (e.g. an FTP server).  SocketMgr allows
you to safely close the socket so that the server program may be used again
without needing to resort to a complete reset.

  This potentially a very dangerous program - it can crash the whole system
with a single click.  Use it with care and don't let it get into the wrong
hands.


 Usage _____________________________________________________________________

  To load SocketMgr double-click on its icon in the filer window where it
resides.  When it loads it will not show itself on the desktop, instead it
will sit in the background waiting for you to press Ctrl-S, upon which it
will open its main window (in most cases, it will only open when no other
window or icon has the input focus).  This window will list all of the
sockets that SocketMgr can find out about, typically those only marked as
being 'active' (inactive sockets, such as those pending removal, will not be
listed).  For example, say the main window shows the following sockets:

             0 - TCP - Listening on port 80
             1 - TCP - Listening on port 6667
             2 - TCP - Listening on port 21
             3 - TCP - localhost.1029 to zinc.netplex.net.www
             6 - TCP - localhost.1035 to magnesium.netplex.net.www

and say that the WWW server has just crashed and left socket 0 blindly
listening on port 80.  By clicking on the �Remove� button next to it, it
will be removed and you will be free to restart the server.

  Although you can remove sockets which belong to running applications,
*don't*, you�ll only crash the application it belongs to or even the whole
system.

  The list *will not* be automatically updated when sockets are created or
removed by an application; to update the list press Ctrl-S again.  It will
always be updated when you use the �Remove� button to remove a socket though.


 Versions __________________________________________________________________

1.00 (22 Oct 1996)
    - First release.

1.01 (10 Feb 1997)
    - Shared OpenFiles/RemoveDA/SocketMgr updates (routine tweaking and
      unneccessary routines removed).
    - Fixed the bad file descriptor problem: string terminators were being
      overwritten.
    - Won't now crash if there are too many open sockets to list.
    - Squidgings.


 Copyright & Contact Addresses _____________________________________________

  This software is copyrighted work of David Thomas, it is supplied �as is�;
using it is entirely at your own risk.  I make no warranty as to the fitness
of this software for any purpose.  You are free to distribute this
application to anyone you please, as long as you are not supplying it for
personal gain and it is delivered with all the supplied files unaltered.

  If you have any comments, bug reports, suggestions for future versions or
anything else don't hesitate to contact me at -

  Mail:  Mr D.P. Thomas
         20 Rosebery Avenue
         Waterloo
         Liverpool
         L22 2BH

  Email: CMSDTHOM@livjm.ac.uk

  WWW:   http://java.cms.livjm.ac.uk/cmsdthom/
  
  The latest versions of my applications will be available from my World
Wide Web pages, where term dates allow.
____________________________________________________________________________

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*
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00000050  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000060  20 20 20 20 20 20 20 20  20 20 94 20 53 20 6f 20  |          . S o |
00000070  63 20 6b 20 65 20 74 20  4d 20 67 20 72 20 95 0a  |c k e t M g r ..|
00000080  0a 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |.               |
00000090  20 20 20 20 20 20 20 20  20 20 20 20 49 6e 74 65  |            Inte|
000000a0  72 6e 65 74 20 53 6f 63  6b 65 74 20 52 65 6d 6f  |rnet Socket Remo|
000000b0  76 65 72 0a 0a 20 20 20  20 20 20 20 20 20 20 20  |ver..           |
000000c0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 62  |               b|
000000d0  79 20 44 61 76 69 64 20  54 68 6f 6d 61 73 2c 20  |y David Thomas, |
000000e0  a9 20 31 39 39 36 2d 37  0a 20 20 20 20 20 20 20  |. 1996-7.       |
000000f0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000100  20 20 76 65 72 73 69 6f  6e 20 31 2e 30 31 20 28  |  version 1.01 (|
00000110  31 30 20 46 65 62 20 31  39 39 37 29 0a 5f 5f 5f  |10 Feb 1997).___|
00000120  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |________________|
*
00000160  5f 5f 5f 5f 5f 5f 5f 5f  5f 0a 0a 0a 20 50 75 72  |_________... Pur|
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00000180  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |________________|
*
000001b0  5f 5f 5f 5f 5f 5f 5f 5f  0a 0a 20 20 53 6f 63 6b  |________..  Sock|
000001c0  65 74 4d 67 72 20 69 73  20 61 20 75 74 69 6c 69  |etMgr is a utili|
000001d0  74 79 20 66 6f 72 20 72  65 6d 6f 76 69 6e 67 20  |ty for removing |
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000003c0  61 6e 67 65 72 6f 75 73  20 70 72 6f 67 72 61 6d  |angerous program|
000003d0  20 2d 20 69 74 20 63 61  6e 20 63 72 61 73 68 20  | - it can crash |
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00000440  73 2e 0a 0a 0a 20 55 73  61 67 65 20 5f 5f 5f 5f  |s.... Usage ____|
00000450  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |________________|
*
00000490  5f 0a 0a 20 20 54 6f 20  6c 6f 61 64 20 53 6f 63  |_..  To load Soc|
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00000870  20 74 6f 20 69 74 2c 20  69 74 0a 77 69 6c 6c 20  | to it, it.will |
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00000890  6f 75 20 77 69 6c 6c 20  62 65 20 66 72 65 65 20  |ou will be free |
000008a0  74 6f 20 72 65 73 74 61  72 74 20 74 68 65 20 73  |to restart the s|
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000008f0  67 20 61 70 70 6c 69 63  61 74 69 6f 6e 73 2c 0a  |g applications,.|
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00000910  6f 6e 6c 79 20 63 72 61  73 68 20 74 68 65 20 61  |only crash the a|
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00000950  6d 2e 0a 0a 20 20 54 68  65 20 6c 69 73 74 20 2a  |m...  The list *|
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000009d0  73 73 20 43 74 72 6c 2d  53 20 61 67 61 69 6e 2e  |ss Ctrl-S again.|
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00000a00  20 79 6f 75 20 75 73 65  20 74 68 65 20 90 52 65  | you use the .Re|
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00000a20  72 65 6d 6f 76 65 20 61  20 73 6f 63 6b 65 74 20  |remove a socket |
00000a30  74 68 6f 75 67 68 2e 0a  0a 0a 20 56 65 72 73 69  |though.... Versi|
00000a40  6f 6e 73 20 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |ons ____________|
00000a50  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |________________|
*
00000a80  5f 5f 5f 5f 5f 5f 0a 0a  31 2e 30 30 20 28 32 32  |______..1.00 (22|
00000a90  20 4f 63 74 20 31 39 39  36 29 0a 20 20 20 20 2d  | Oct 1996).    -|
00000aa0  20 46 69 72 73 74 20 72  65 6c 65 61 73 65 2e 0a  | First release..|
00000ab0  0a 31 2e 30 31 20 28 31  30 20 46 65 62 20 31 39  |.1.01 (10 Feb 19|
00000ac0  39 37 29 0a 20 20 20 20  2d 20 53 68 61 72 65 64  |97).    - Shared|
00000ad0  20 4f 70 65 6e 46 69 6c  65 73 2f 52 65 6d 6f 76  | OpenFiles/Remov|
00000ae0  65 44 41 2f 53 6f 63 6b  65 74 4d 67 72 20 75 70  |eDA/SocketMgr up|
00000af0  64 61 74 65 73 20 28 72  6f 75 74 69 6e 65 20 74  |dates (routine t|
00000b00  77 65 61 6b 69 6e 67 20  61 6e 64 0a 20 20 20 20  |weaking and.    |
00000b10  20 20 75 6e 6e 65 63 63  65 73 73 61 72 79 20 72  |  unneccessary r|
00000b20  6f 75 74 69 6e 65 73 20  72 65 6d 6f 76 65 64 29  |outines removed)|
00000b30  2e 0a 20 20 20 20 2d 20  46 69 78 65 64 20 74 68  |..    - Fixed th|
00000b40  65 20 62 61 64 20 66 69  6c 65 20 64 65 73 63 72  |e bad file descr|
00000b50  69 70 74 6f 72 20 70 72  6f 62 6c 65 6d 3a 20 73  |iptor problem: s|
00000b60  74 72 69 6e 67 20 74 65  72 6d 69 6e 61 74 6f 72  |tring terminator|
00000b70  73 20 77 65 72 65 20 62  65 69 6e 67 0a 20 20 20  |s were being.   |
00000b80  20 20 20 6f 76 65 72 77  72 69 74 74 65 6e 2e 0a  |   overwritten..|
00000b90  20 20 20 20 2d 20 57 6f  6e 27 74 20 6e 6f 77 20  |    - Won't now |
00000ba0  63 72 61 73 68 20 69 66  20 74 68 65 72 65 20 61  |crash if there a|
00000bb0  72 65 20 74 6f 6f 20 6d  61 6e 79 20 6f 70 65 6e  |re too many open|
00000bc0  20 73 6f 63 6b 65 74 73  20 74 6f 20 6c 69 73 74  | sockets to list|
00000bd0  2e 0a 20 20 20 20 2d 20  53 71 75 69 64 67 69 6e  |..    - Squidgin|
00000be0  67 73 2e 0a 0a 0a 20 43  6f 70 79 72 69 67 68 74  |gs.... Copyright|
00000bf0  20 26 20 43 6f 6e 74 61  63 74 20 41 64 64 72 65  | & Contact Addre|
00000c00  73 73 65 73 20 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |sses ___________|
00000c10  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |________________|
*
00000c30  5f 5f 0a 0a 20 20 54 68  69 73 20 73 6f 66 74 77  |__..  This softw|
00000c40  61 72 65 20 69 73 20 63  6f 70 79 72 69 67 68 74  |are is copyright|
00000c50  65 64 20 77 6f 72 6b 20  6f 66 20 44 61 76 69 64  |ed work of David|
00000c60  20 54 68 6f 6d 61 73 2c  20 69 74 20 69 73 20 73  | Thomas, it is s|
00000c70  75 70 70 6c 69 65 64 20  94 61 73 20 69 73 95 3b  |upplied .as is.;|
00000c80  0a 75 73 69 6e 67 20 69  74 20 69 73 20 65 6e 74  |.using it is ent|
00000c90  69 72 65 6c 79 20 61 74  20 79 6f 75 72 20 6f 77  |irely at your ow|
00000ca0  6e 20 72 69 73 6b 2e 20  20 49 20 6d 61 6b 65 20  |n risk.  I make |
00000cb0  6e 6f 20 77 61 72 72 61  6e 74 79 20 61 73 20 74  |no warranty as t|
00000cc0  6f 20 74 68 65 20 66 69  74 6e 65 73 73 0a 6f 66  |o the fitness.of|
00000cd0  20 74 68 69 73 20 73 6f  66 74 77 61 72 65 20 66  | this software f|
00000ce0  6f 72 20 61 6e 79 20 70  75 72 70 6f 73 65 2e 20  |or any purpose. |
00000cf0  20 59 6f 75 20 61 72 65  20 66 72 65 65 20 74 6f  | You are free to|
00000d00  20 64 69 73 74 72 69 62  75 74 65 20 74 68 69 73  | distribute this|
00000d10  0a 61 70 70 6c 69 63 61  74 69 6f 6e 20 74 6f 20  |.application to |
00000d20  61 6e 79 6f 6e 65 20 79  6f 75 20 70 6c 65 61 73  |anyone you pleas|
00000d30  65 2c 20 61 73 20 6c 6f  6e 67 20 61 73 20 79 6f  |e, as long as yo|
00000d40  75 20 61 72 65 20 6e 6f  74 20 73 75 70 70 6c 79  |u are not supply|
00000d50  69 6e 67 20 69 74 20 66  6f 72 0a 70 65 72 73 6f  |ing it for.perso|
00000d60  6e 61 6c 20 67 61 69 6e  20 61 6e 64 20 69 74 20  |nal gain and it |
00000d70  69 73 20 64 65 6c 69 76  65 72 65 64 20 77 69 74  |is delivered wit|
00000d80  68 20 61 6c 6c 20 74 68  65 20 73 75 70 70 6c 69  |h all the suppli|
00000d90  65 64 20 66 69 6c 65 73  20 75 6e 61 6c 74 65 72  |ed files unalter|
00000da0  65 64 2e 0a 0a 20 20 49  66 20 79 6f 75 20 68 61  |ed...  If you ha|
00000db0  76 65 20 61 6e 79 20 63  6f 6d 6d 65 6e 74 73 2c  |ve any comments,|
00000dc0  20 62 75 67 20 72 65 70  6f 72 74 73 2c 20 73 75  | bug reports, su|
00000dd0  67 67 65 73 74 69 6f 6e  73 20 66 6f 72 20 66 75  |ggestions for fu|
00000de0  74 75 72 65 20 76 65 72  73 69 6f 6e 73 20 6f 72  |ture versions or|
00000df0  0a 61 6e 79 74 68 69 6e  67 20 65 6c 73 65 20 64  |.anything else d|
00000e00  6f 6e 27 74 20 68 65 73  69 74 61 74 65 20 74 6f  |on't hesitate to|
00000e10  20 63 6f 6e 74 61 63 74  20 6d 65 20 61 74 20 2d  | contact me at -|
00000e20  0a 0a 20 20 4d 61 69 6c  3a 20 20 4d 72 20 44 2e  |..  Mail:  Mr D.|
00000e30  50 2e 20 54 68 6f 6d 61  73 0a 20 20 20 20 20 20  |P. Thomas.      |
00000e40  20 20 20 32 30 20 52 6f  73 65 62 65 72 79 20 41  |   20 Rosebery A|
00000e50  76 65 6e 75 65 0a 20 20  20 20 20 20 20 20 20 57  |venue.         W|
00000e60  61 74 65 72 6c 6f 6f 0a  20 20 20 20 20 20 20 20  |aterloo.        |
00000e70  20 4c 69 76 65 72 70 6f  6f 6c 0a 20 20 20 20 20  | Liverpool.     |
00000e80  20 20 20 20 4c 32 32 20  32 42 48 0a 0a 20 20 45  |    L22 2BH..  E|
00000e90  6d 61 69 6c 3a 20 43 4d  53 44 54 48 4f 4d 40 6c  |mail: CMSDTHOM@l|
00000ea0  69 76 6a 6d 2e 61 63 2e  75 6b 0a 0a 20 20 57 57  |ivjm.ac.uk..  WW|
00000eb0  57 3a 20 20 20 68 74 74  70 3a 2f 2f 6a 61 76 61  |W:   http://java|
00000ec0  2e 63 6d 73 2e 6c 69 76  6a 6d 2e 61 63 2e 75 6b  |.cms.livjm.ac.uk|
00000ed0  2f 63 6d 73 64 74 68 6f  6d 2f 0a 20 20 0a 20 20  |/cmsdthom/.  .  |
00000ee0  54 68 65 20 6c 61 74 65  73 74 20 76 65 72 73 69  |The latest versi|
00000ef0  6f 6e 73 20 6f 66 20 6d  79 20 61 70 70 6c 69 63  |ons of my applic|
00000f00  61 74 69 6f 6e 73 20 77  69 6c 6c 20 62 65 20 61  |ations will be a|
00000f10  76 61 69 6c 61 62 6c 65  20 66 72 6f 6d 20 6d 79  |vailable from my|
00000f20  20 57 6f 72 6c 64 0a 57  69 64 65 20 57 65 62 20  | World.Wide Web |
00000f30  70 61 67 65 73 2c 20 77  68 65 72 65 20 74 65 72  |pages, where ter|
00000f40  6d 20 64 61 74 65 73 20  61 6c 6c 6f 77 2e 0a 5f  |m dates allow.._|
00000f50  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 5f 5f 5f 5f 5f  |________________|
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00000f90  5f 5f 5f 5f 5f 5f 5f 5f  5f 5f 5f 0a 0a           |___________..|
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