187 lines
3.2 KiB
HTML
187 lines
3.2 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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><HEAD
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><TITLE
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>Bugs and Term Wish List</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK
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REL="HOME"
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TITLE="Using Term to Pierce an Internet Firewall mini-HOWTO"
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HREF="index.html"><LINK
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REL="PREVIOUS"
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TITLE="Telnet Mode"
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HREF="telnet.html"><LINK
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REL="NEXT"
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TITLE="Tricks That Do Not Seem to Work"
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HREF="tricks.html"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>Using Term to Pierce an Internet Firewall mini-HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="telnet.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="tricks.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="BUGS"
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></A
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>10. Bugs and Term Wish List</H1
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><P
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>The <B
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CLASS="COMMAND"
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>linecheck</B
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> program has some problems checking telnet connections
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sometimes. This is sometimes because it doesn't check the return code
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of the <TT
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CLASS="FUNCTION"
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>read()</TT
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> call it makes. For network connections,
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this call to <TT
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CLASS="FUNCTION"
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>read()</TT
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> can return <TT
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CLASS="LITERAL"
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>-1</TT
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>
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with an <TT
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CLASS="LITERAL"
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>EINTR</TT
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> (interrupted) or
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<TT
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CLASS="LITERAL"
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>EAGAIN</TT
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> (try again) error code.
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Obviously this should be checked for.</P
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><P
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>There are a number of features that could ease the use of term over
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telnet. These primarily relate to an assumption that influenced the
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design of term, namely that the connection is low bandwidth, low
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latency, and somewhat noisy.</P
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><P
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>A telnet connection is in general high bandwidth, high latency, and
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error free. This means that the connection could be better utilized
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if (a) the maximum window size was raised, well above the limit
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imposed by term's <TT
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CLASS="LITERAL"
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>N_PACKETS/2=16</TT
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>,
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(b) there was an option to turn off sending and checking packet checksums,
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and (c) larger packets were permitted when appropriate.</P
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><P
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>Also, to enhance security, it would be nice to have a term option to
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log all connections through the socket it monitors to a log file, or
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to <TT
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CLASS="LITERAL"
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>stderr</TT
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>, or both. This would allow one to see if one's term
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connection is being subverted by nasty hackers on the outside insecure
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machine.</P
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="telnet.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="index.html"
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ACCESSKEY="H"
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>Home</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="tricks.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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>Telnet Mode</TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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> </TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>Tricks That Do Not Seem to Work</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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> |