> They don't answer. This is near a minute. Seems wget times out the connection.
>
> > 12:58:34.422050 www.montana.com.www > dan-m.uni-c.dk.3094: . ack 81 win 8760 <nop,nop,timestamp 260703 180921673> (DF)
>
> Finally they answer.
>
> > 13:06:51.723096 www.montana.com.www > dan-m.uni-c.dk.3094: R 1461:2921(1460) ack 81 win 8760 (DF)
>
> But we have already closed it.
>
> Try increasing the wget timeout. With a brief look at wget --help it looks
> like the -T option might help you.
>
> -Andi
This doesn't help (the default timeout is 15 minutes). The problem is not
endemic to wget. I can reproduce it using telnet, as shown here:
] Script started on Thu Jul 15 09:34:07 1999
] dan-m>telnet www.opendx.org 80
] Trying 199.2.139.3...
] Connected to www.opendx.org.
] Escape character is '^]'.
] GET / HTTP/1.0
] User-Agent: telnet
] Host: www.opendx.org:80
] Accept: */*
]
]
] ^]
] telnet> quit
] Connection closed.
] dan-m>exit
]
] Script done on Thu Jul 15 09:36:14 1999
I killed the telnet session after waiting in vain for a about a minute
or so. Here is the tcpdump of the session above:
] 09:34:19.451811 dan-m.uni-c.dk.3614 > www.montana.com.www: S 2098436956:2098436956(0) win 32120 <mss 1460,sackOK,timestamp 188340943[|tcp]> (DF) [tos 0x10]
] 09:34:19.647959 www.montana.com.www > dan-m.uni-c.dk.3614: S 347865935:347865935(0) ack 2098436957 win 2920 <mss 1460,nop,nop,timestamp 919800[|tcp]> (DF)
] 09:34:19.648092 dan-m.uni-c.dk.3614 > www.montana.com.www: . ack 1 win 32120 <nop,nop,timestamp 188340963 919800> (DF) [tos 0x10]
] 09:34:25.789681 dan-m.uni-c.dk.3614 > www.montana.com.www: P 1:17(16) ack 1 win 32120 <nop,nop,timestamp 188341577 919800> (DF) [tos 0x10]
] 09:34:26.155413 www.montana.com.www > dan-m.uni-c.dk.3614: . ack 17 win 8760 <nop,nop,timestamp 919813 188341577> (DF)
] 09:34:33.749850 dan-m.uni-c.dk.3614 > www.montana.com.www: P 17:37(20) ack 1 win 32120 <nop,nop,timestamp 188342373 919813> (DF) [tos 0x10]
] 09:34:33.951142 www.montana.com.www > dan-m.uni-c.dk.3614: . ack 37 win 8760 <nop,nop,timestamp 919829 188342373> (DF)
] 09:34:40.747541 dan-m.uni-c.dk.3614 > www.montana.com.www: P 37:62(25) ack 1 win 32120 <nop,nop,timestamp 188343073 919829> (DF) [tos 0x10]
] 09:34:40.951677 www.montana.com.www > dan-m.uni-c.dk.3614: . ack 62 win 8760 <nop,nop,timestamp 919843 188343073> (DF)
] 09:34:45.960084 dan-m.uni-c.dk.3614 > www.montana.com.www: P 62:75(13) ack 1 win 32120 <nop,nop,timestamp 188343594 919843> (DF) [tos 0x10]
] 09:34:46.353250 www.montana.com.www > dan-m.uni-c.dk.3614: . ack 75 win 8760 <nop,nop,timestamp 919853 188343594> (DF)
] 09:34:48.949951 dan-m.uni-c.dk.3614 > www.montana.com.www: P 75:77(2) ack 1 win 32120 <nop,nop,timestamp 188343893 919853> (DF) [tos 0x10]
] 09:34:49.156659 www.montana.com.www > dan-m.uni-c.dk.3614: . ack 77 win 8760 <nop,nop,timestamp 919859 188343893> (DF)
] 09:35:20.320148 dan-m.uni-c.dk.3614 > www.montana.com.www: P 77:79(2) ack 1 win 32120 <nop,nop,timestamp 188347030 919859> (DF) [tos 0x10]
] 09:35:20.557063 www.montana.com.www > dan-m.uni-c.dk.3614: . ack 79 win 8758 <nop,nop,timestamp 919922 188347030> (DF)
] 09:35:24.209859 dan-m.uni-c.dk.3614 > www.montana.com.www: F 79:79(0) ack 1 win 32120 <nop,nop,timestamp 188347419 919922> (DF) [tos 0x10]
] 09:35:24.449877 www.montana.com.www > dan-m.uni-c.dk.3614: . ack 80 win 8758 <nop,nop,timestamp 919929 188347419> (DF)
] 09:35:24.450039 dan-m.uni-c.dk.3614 > www.montana.com.www: R 2098437036:2098437036(0) win 0
]
] 18 packets received by filter
] 0 packets dropped by kernel
If I try exactly the same thing on an SGI (IRIX 6.2), it works, like it's
supposed to:
] Script started on Thu Jul 15 09:36:06 1999
] arhsgi1>telnet www.opendx.org 80
] Trying 199.2.139.3...
] Connected to www.opendx.org.
] Escape character is '^]'.
] GET / HTTP/1.0
] User-Agent: telnet
] Host: www.opendx.org:80
] Accept: */*
]
] HTTP/1.1 200 OK
] Date: Thu, 15 Jul 1999 07:38:53 GMT
] Server: Apache/1.3.6 (Unix) mod_ssl/2.3.3 OpenSSL/0.9.3a PHP/3.0.9
] Connection: close
] Content-Type: text/html
]
] <HTML>
] <!--This file created 7/6/99 9:24 PM by Claris Home Page version 3.0-->
] <HEAD>
] <TITLE>OpenDX Home Page</TITLE>
] <META NAME=GENERATOR CONTENT="Claris Home Page 3.0">
] <X-CLARIS-WINDOW TOP=42 BOTTOM=757 LEFT=4 RIGHT=534>
] <X-CLARIS-TAGVIEW MODE=minimal>
] <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
] "http://www.w3.org/TR/REC-html40/loose.dtd"><META name="keywords" content="data viz, data visualization, computer viz, computer visualizaton, scientific visualization, scientific viz, 3d visualization, 3d viz, volumetric, data explorer, avs, idl, research systems, geographic information systems, data formats, opengl, opendx, ibm visualization data explorer">
] </HEAD>
] <BODY BGCOLOR="#FFFFFF">
] <P><TABLE BORDER=0 CELLPADDING=5>
] <TR>
] <TD>
] <P><IMG SRC="images/opendx.gif" WIDTH=167 HEIGHT=50 ALIGN=top><IMG SRC="images/title.gif" ALT="The Open Source Software Project Based on IBM's Visualization Data Explorer" WIDTH=360 HEIGHT=50 ALIGN=top></P>
] </TD>
] </TR>
] <TR>
] <TD>
] <CENTER><A HREF="http://www.vizsolutions.com/"><IMG SRC="advertise/vis.gif" ALT="Visualization and Imagery Solutions" WIDTH=468 HEIGHT=60 BORDER=1 ALIGN=bottom></A></CENTER>
] </TD>
] </TR>
] <TR>
] <TD>
] <P><TABLE BORDER=0 CELLSPACING=0 CELLPADDING=0>
] <TR>
] <TD VALIGN=top WIDTH=180 BGCOLOR="#330066">
] <P><TABLE BORDER=0 BGCOLOR="#330066">
] <TR>
] <TD VALIGN=top>
] <P><IMG SRC="images/arrow.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="index.html"><IMG SRC="images/home.gif" ALT="Home Page" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="news.html"><IMG SRC="images/recent.gif" ALT="Recent News" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="about.html"><IMG SRC="images/about.gif" ALT="About OpenDX" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="started.html"><IMG SRC="images/start.gif" ALT="Getting Started" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="download.html"><IMG SRC="images/download.gif" ALT="Downloads" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="projects.html"><IMG SRC="images/projects.gif" ALT="Projects" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="contributors.html"><IMG SRC="images/contributors.gif" ALT="Contributors" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="support.html"><IMG SRC="images/support.gif" ALT="Support" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="highlights.html?&highlight=/inaction/highlights/"><IMG SRC="images/highlight.gif" ALT="Highlights-DX in Action" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="bookstore.html"><IMG SRC="images/bookstore.gif" ALT="Bookstore" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="feedback.html"><IMG SRC="images/contact.gif" ALT="Feedback-Contact Info" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="community.html"><IMG SRC="images/community.gif" ALT="Community Links" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A><BR>
] <IMG SRC="images/blank.gif" WIDTH=9 HEIGHT=20 ALIGN=bottom><A HREF="advertising.html"><IMG SRC="images/advertising.gif" ALT="Advertising" WIDTH=160 HEIGHT=20 BORDER=0 ALIGN=bottom></A></P>
] </TD>
] </TR>
] </TABLE>
] <IMG SRC="images/dx-logo-shd.jpg" WIDTH=160 HEIGHT=200 ALIGN=bottom></P>
] </TD>
] <TD VALIGN=top WIDTH=445 BGCOLOR="#660033">
] <P><TABLE BORDER=0 BGCOLOR="#FFFFFF" CELLSPACING=8>
] <TR>
] <TD VALIGN=top WIDTH=425>
] <H3><I>Latest News</I></H3>
]
] <UL>
] <LI><I>July 6, 1999</I> - Version 4.0.6
] of source code released.</LI>
]
] <LI><I>June 29, 1999</I> - Tim at Macro
] Survey Research and Consulting puts up
] LXR for viewing OpenDX source
] code.</LI>
]
] <LI><I>June 22, 1999</I> - New mailing
] lists are added, a bug tracking data
] base is added, and Version 4.0.5 of the
] source code is released</LI>
]
] <LI><I>June 4, 1999</I> - <A HREF="http://www.sciencemag.org/cgi/content/summary/284/5420/1583c">Science
] Magazine</A> picks up on the Deep
] Computing Initiative and OpenDX</LI>
]
] <LI><I>May 27, 1999</I> - OpenDX 4.0.1
] source code available.</LI>
]
] <LI><I>May 24, 1999</I> - IBM's
] <A HREF="http://www.research.ibm.com/dci/dx_release.html">open
] source announcement ...</A></LI>
] </UL>
] </TD>
] </TR>
] <TR>
] <TD VALIGN=top WIDTH=425>
] <H3><I>User Quote</I></H3>
]
] <P><P> In a nutshell, I use DX extensively for many types of applications using both large and small data sets...</P><P>
] I'm basically using it in a 2-d world for remote sensing data applications. 99% of the people in this area use IDL. DX stands out better in 3-d applications, but from my experience
] it is faster and more reliable than IDL even in 2-d applications (very large data sets).
] I use DX for many data types, especially unstructured and polyline and I also use DX as a debugging tool for just about anything. If an algorithm isn't doing what I think it should, just start a new DX program from scratch and in minutes you can be analizing the problem.
] </P>
]
] <P ALIGN=right>Robert Neely<br>NASA Langley Research Center</P>
] </P>
] </TD>
] </TR>
] <TR>
] <TD VALIGN=top WIDTH=425>
] <CENTER><TABLE BORDER=0>
] <TR>
] <TD>
] <H3><CENTER>Data Explorer in
] <A HREF="highlights.html?&highlight=/inaction/highlights/">Action</A>
]
] <HR>
]
] </CENTER></H3>
] </TD>
] </TR>
] <TR>
] <TD>
] <P><TABLE BORDER=0><TR><TD><CENTER><IMG SRC="/highlight/radiation/image.jpg" WIDTH=160 HEIGHT=120 ALIGN=bottom></CENTER>
] </TD></TR><TR><TD><P><P><a href="http://www.rahd.com/">RAHD Oncology Products</a> uses Data Explorer in commercial radiation treatment planning products. The Multidimensional Viewer (MDV) creates 3D structures from CT contours and 3D beams from beam parameters and blocking, and allows interactive review of structures, treatment beams, dose, CTs, and dose volume histograms. The 3D Beam Modifier (BM) provides interactive beam design in 3D, both manually and automatically, with interactive review of structures, treatment beams, CTs, and digital radiographs. It provides real time interaction and modification of select objects simultaneously in multiple windows. Each product utilizes DX very differently (both employ a separate Motif GUI):
] </P>
] <P>
] The MDV utilizes the DX data flow, VPE, and user interface environments.<br>
] The BM is built entirely in C, using only the DX libraries (no data flow, VPE, or user interface).
] </P>
] </P></TD></TR></TABLE></P>
] </TD>
] </TR>
] </TABLE>
] </CENTER>
] </TD>
] </TR>
] </TABLE>
] </P>
] </TD>
] <TD ALIGN=center VALIGN=top WIDTH=125>
] <P ALIGN=left><TABLE BORDER=1>
] <TR>
] <TD ALIGN=center VALIGN=top WIDTH=125 HEIGHT=125 BGCOLOR="#FFFF99">
] <H3>Available Advertising Space.</H3>
] </TD>
] </TR>
] </TABLE>
] </P>
] </TD>
] </TR>
] </TABLE>
] </P>
] </TD>
] </TR>
] </TABLE>
] </P>
] </BODY>
] </HTML>
] Connection closed by foreign host.
] arhsgi1>exit
]
] script done on Thu Jul 15 09:38:02 1999
And here is the tcpdump of the SGI session:
] 09:36:26.195151 arhsgi1.uni-c.dk.2742 > www.montana.com.www: S 370183252:370183252(0) win 61440 <mss 1460> [tos 0x10]
] 09:36:26.389642 www.montana.com.www > arhsgi1.uni-c.dk.2742: S 388086150:388086150(0) ack 370183253 win 2920 <mss 1460> (DF)
] 09:36:26.390078 arhsgi1.uni-c.dk.2742 > www.montana.com.www: . ack 1 win 61320 (DF) [tos 0x10]
] 09:36:31.661127 arhsgi1.uni-c.dk.2742 > www.montana.com.www: P 1:17(16) ack 1 win 61320 (DF) [tos 0x10]
] 09:36:31.963516 www.montana.com.www > arhsgi1.uni-c.dk.2742: . ack 17 win 8760 (DF)
] 09:36:41.651044 arhsgi1.uni-c.dk.2742 > www.montana.com.www: P 17:37(20) ack 1 win 61320 (DF) [tos 0x10]
] 09:36:41.971740 www.montana.com.www > arhsgi1.uni-c.dk.2742: . ack 37 win 8760 (DF)
] 09:36:48.111119 arhsgi1.uni-c.dk.2742 > www.montana.com.www: P 37:62(25) ack 1 win 61320 (DF) [tos 0x10]
] 09:36:48.365025 www.montana.com.www > arhsgi1.uni-c.dk.2742: . ack 62 win 8760 (DF)
] 09:36:53.291169 arhsgi1.uni-c.dk.2742 > www.montana.com.www: P 62:75(13) ack 1 win 61320 (DF) [tos 0x10]
] 09:36:53.566099 www.montana.com.www > arhsgi1.uni-c.dk.2742: . ack 75 win 8760 (DF)
] 09:36:57.290927 arhsgi1.uni-c.dk.2742 > www.montana.com.www: P 75:77(2) ack 1 win 61320 (DF) [tos 0x10]
] 09:36:57.528161 www.montana.com.www > arhsgi1.uni-c.dk.2742: . 1:1461(1460) ack 77 win 8760 (DF)
] 09:36:57.531342 www.montana.com.www > arhsgi1.uni-c.dk.2742: P 1461:2049(588) ack 77 win 8760 (DF)
] 09:36:57.548258 arhsgi1.uni-c.dk.2742 > www.montana.com.www: . ack 2049 win 61320 (DF) [tos 0x10]
] 09:36:57.774140 www.montana.com.www > arhsgi1.uni-c.dk.2742: . 2049:3509(1460) ack 77 win 8760 (DF)
] 09:36:57.785224 www.montana.com.www > arhsgi1.uni-c.dk.2742: . 3509:4969(1460) ack 77 win 8760 (DF)
] 09:36:57.785779 arhsgi1.uni-c.dk.2742 > www.montana.com.www: . ack 4969 win 61320 (DF) [tos 0x10]
] 09:36:57.796336 www.montana.com.www > arhsgi1.uni-c.dk.2742: . 4969:6429(1460) ack 77 win 8760 (DF)
] 09:36:57.948228 arhsgi1.uni-c.dk.2742 > www.montana.com.www: . ack 6429 win 61320 (DF) [tos 0x10]
] 09:36:58.009621 www.montana.com.www > arhsgi1.uni-c.dk.2742: . 6429:7889(1460) ack 77 win 8760 (DF)
] 09:36:58.020609 www.montana.com.www > arhsgi1.uni-c.dk.2742: . 7889:9349(1460) ack 77 win 8760 (DF)
] 09:36:58.021196 arhsgi1.uni-c.dk.2742 > www.montana.com.www: . ack 9349 win 61320 (DF) [tos 0x10]
] 09:36:58.025115 www.montana.com.www > arhsgi1.uni-c.dk.2742: FP 9349:10061(712) ack 77 win 2920 (DF)
] 09:36:58.025484 arhsgi1.uni-c.dk.2742 > www.montana.com.www: . ack 10062 win 60608 (DF) [tos 0x10]
] 09:36:58.028576 arhsgi1.uni-c.dk.2742 > www.montana.com.www: F 77:77(0) ack 10062 win 61320 (DF) [tos 0x10]
] 09:36:58.256182 www.montana.com.www > arhsgi1.uni-c.dk.2742: . ack 78 win 2920 (DF)
]
] 27 packets received by filter
] 0 packets dropped by kernel
I have received mail from someone else who could reproduce the problem
on his Debian 2.1 kernel 2.2.10 box, and also had problems with this
site on a certain SUN machine (the SUN I have access to works fine
though). The server on the remote machine (www.opendx.org) is
Apache/1.3.6 (Unix) mod_ssl/2.3.3 OpenSSL/0.9.3a PHP/3.0.9 (as revealed
by wget -S --debug www.opendx.org.
Does anyone have an explanation for all this?
Regards,
Dan
__________________________________________________________________
Dan Mønster, Ph.D. E-mail: Dan.Moenster@uni-c.dk
UNI·C, Scientific Computing Phone: (+45) 8937 6621
Olof Palmes Allé 38 Fax: (+45) 8937 6677
DK-8200 Århus N, Denmark WWW: http://www.uni-c.dk
__________________________________________________________________
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