failure message from server results in cached page with the first few bytes overwritten by the failure message

RESOLVED WORKSFORME

Status

()

Firefox
General
RESOLVED WORKSFORME
8 years ago
10 months ago

People

(Reporter: zooko, Unassigned)

Tracking

3.5 Branch
x86
Linux
Points:
---

Firefox Tracking Flags

(Not tracked)

Details

(Reporter)

Description

8 years ago
User-Agent:       Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b4pre) Gecko/20090401 Ubuntu/9.04 (jaunty) Shiretoko/3.5b4pre
Build Identifier: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1b4pre) Gecko/20090401 Ubuntu/9.04 (jaunty) Shiretoko/3.5b4pre

Folks:

Thank you for Mozilla Firefox!  A flagship project of openness and freedom.  Also, it doesn't suck!  Way to go.

Occasionally a server of mine serves up an error message of about 2302 bytes in length instead of serving up the 500 KB file.  When it does, Firefox-3.5b4 shows me a copy of the file itself (presumably pulled from the cache, since it didn't come from my server) with the first 2302 or so bytes of the file overwritten by the error message.  The resulting corrupted file doesn't even parse according to HTML, of course.

At first I thought that this was a bug in my server, so I opened a ticket on my issue tracker: http://allmydata.org/trac/tahoe/ticket/698 .  In that ticket I attached some examples of the resulting corrupted file (the one with the original text pulled from cache but then overwritten by the error message).  Eventually I concluded that my server wasn't really at fault (it might be giving a crummy error message, but it is still firefox's job to display the crummy error message instead of a mashup of the original file plus the crummy error message!).

I've also reported this on launchpad against the Ubuntu package of Firefox-3.5b4 in Ubuntu Jaunty:

https://bugs.launchpad.net/ubuntu/+source/firefox-3.5/+bug/382444

Thanks!

Regards,

Zooko

Reproducible: Sometimes

Steps to Reproduce:
1. Install the Tahoe server and get it to fail in this way.  :-(
2. Point ff-3.5b4 at it, hit reload.
3. Observe interesting mashup of cached content and error message visible in your browser window.

If you don't want to go through all of these steps, please observe the resulting "interesting mashup": http://allmydata.org/trac/tahoe/attachment/ticket/698/wiki.html.bz2 .  I've pasted the first 4000 bytes of the actual result and expected result below.  I've also pasted into "Additional Information" the first 4000 bytes of the original file -- the one that the server failed to serve up and which must have been pulled from ff's cache.
Actual Results:  
<html><head><title>Exception</title></head><body><style type="text/css">
p.error {
  color: black;
  font-family: Verdana, Arial, helvetica, sans-serif;
  font-weight: bold;
  font-size: large;
  margin: 0.25em;
}

div {
  font-family: Verdana, Arial, helvetica, sans-serif;
}

strong.variableClass {
  font-size: small;
}

div.stackTrace {
}

div.frame {
  padding: 0.25em;
  background: white;
  border-bottom: thin black dotted;
}

div.firstFrame {
  padding: 0.25em;
  background: white;
  border-top: thin black dotted;
  border-bottom: thin black dotted;
}

div.location {
    font-size: small;
}

div.snippet {
  background: #FFFFDD;
  padding: 0.25em;
}

div.snippetHighlightLine {
  color: red;
}

span.lineno {
    font-size: small;
}

pre.code {
  margin: 0px;
  padding: 0px;
  display: inline;
  font-size: small;
  font-family: "Courier New", courier, monotype;
}

span.function {
  font-weight: bold;
  font-family: "Courier New", courier, monotype;
}

table.variables {
  border-collapse: collapse;
  width: 100%;
}

td.varName {
  width: 1in;
  vertical-align: top;
  font-style: italic;
  font-size: small;
  padding-right: 0.25em;
}

td.varValue {
  padding-left: 0.25em;
  padding-right: 0.25em;
  font-size: small;
}

div.variables {
  margin-top: 0.5em;
}

div.dict {
  background: #cccc99;
  padding: 2px;
  float: left;
}

td.dictKey {
  background: #ffff99;
  font-weight: bold;
}

td.dictValue {
  background: #ffff99;
}

div.list {
  background: #7777cc;
  padding: 2px;
  float: left;
}

div.listItem {
  background: #9999ff;
}

div.instance {
  width: 100%;
  background: #efefef;
  padding: 2px;
  float: left;
}

span.instanceName {
  font-size: small;
  display: block;
}

span.instanceRepr {
  font-family: "Courier New", courier, monotype;
}

div.function {
  background: orange;
  font-weight: bold;
  float: left;
}
</style><a href="#tracebackEnd"><p class="error">&lt;class 'twisted.internet.defer.FirstError'&gt;: FirstError(&lt;twisted.python.failure.Failure &lt;class 'foolscap.ipb.DeadReferenceError'&gt;&gt;, 2)</p></a><div class="stackTrace"></div><a name="tracebackEnd"><p class="error">&lt;class 'twisted.internet.defer.FirstError'&gt;: FirstError(&lt;twisted.python.failure.Failure &lt;class 'foolscap.ipb.DeadReferenceError'&gt;&gt;, 2)</p></a></body></html>, 19 Feb 2009)
 * Revision: 6246
 */
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Expected Results:  
<html><head><title>Exception</title></head><body><style type="text/css">
p.error {
  color: black;
  font-family: Verdana, Arial, helvetica, sans-serif;
  font-weight: bold;
  font-size: large;
  margin: 0.25em;
}

div {
  font-family: Verdana, Arial, helvetica, sans-serif;
}

strong.variableClass {
  font-size: small;
}

div.stackTrace {
}

div.frame {
  padding: 0.25em;
  background: white;
  border-bottom: thin black dotted;
}

div.firstFrame {
  padding: 0.25em;
  background: white;
  border-top: thin black dotted;
  border-bottom: thin black dotted;
}

div.location {
    font-size: small;
}

div.snippet {
  background: #FFFFDD;
  padding: 0.25em;
}

div.snippetHighlightLine {
  color: red;
}

span.lineno {
    font-size: small;
}

pre.code {
  margin: 0px;
  padding: 0px;
  display: inline;
  font-size: small;
  font-family: "Courier New", courier, monotype;
}

span.function {
  font-weight: bold;
  font-family: "Courier New", courier, monotype;
}

table.variables {
  border-collapse: collapse;
  width: 100%;
}

td.varName {
  width: 1in;
  vertical-align: top;
  font-style: italic;
  font-size: small;
  padding-right: 0.25em;
}

td.varValue {
  padding-left: 0.25em;
  padding-right: 0.25em;
  font-size: small;
}

div.variables {
  margin-top: 0.5em;
}

div.dict {
  background: #cccc99;
  padding: 2px;
  float: left;
}

td.dictKey {
  background: #ffff99;
  font-weight: bold;
}

td.dictValue {
  background: #ffff99;
}

div.list {
  background: #7777cc;
  padding: 2px;
  float: left;
}

div.listItem {
  background: #9999ff;
}

div.instance {
  width: 100%;
  background: #efefef;
  padding: 2px;
  float: left;
}

span.instanceName {
  font-size: small;
  display: block;
}

span.instanceRepr {
  font-family: "Courier New", courier, monotype;
}

div.function {
  background: orange;
  font-weight: bold;
  float: left;
}
</style><a href="#tracebackEnd"><p class="error">&lt;class 'twisted.internet.defer.FirstError'&gt;: FirstError(&lt;twisted.python.failure.Failure &lt;class 'foolscap.ipb.DeadReferenceError'&gt;&gt;, 2)</p></a><div class="stackTrace"></div><a name="tracebackEnd"><p class="error">&lt;class 'twisted.internet.defer.FirstError'&gt;: FirstError(&lt;twisted.python.failure.Failure &lt;class 'foolscap.ipb.DeadReferenceError'&gt;&gt;, 2)</p></a></body></html>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xml:lang="en" xmlns="http://www.w3.org/1999/xhtml" lang="en"><head>


<script id="versionArea" type="text/javascript">
//<![CDATA[
var version = {title: "TiddlyWiki", major: 2, minor: 5, revision: 0, date: new Date("Mar 9, 2009"), extensions: {}};
//]]>
</script>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="copyright" content="TiddlyWiki created by Jeremy Ruston, (jeremy [at] osmosoft [dot] com)

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<script id="jsheadArea" type="text/javascript">
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 * jQuery JavaScript Library v1.3.2
 * http://jquery.com/
 *
 * Copyright (c) 2009 John Resig
 * Dual licensed under the MIT and GPL licenses.
 * http://docs.jquery.com/License
 *
 * Date: 2009-02-19 17:34:21 -0500 (Thu, 19 Feb 2009)
 * Revision: 6246
 */
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Updated

7 years ago

Updated

6 years ago
Version: unspecified → 3.5 Branch

Comment 1

2 years ago
Is this issue still reproducible in the latest Firefox?

https://www.mozilla.org/de/firefox/new/
Flags: needinfo?(zooko)

Comment 2

a year ago
Closing this because no information from the reporter was provided in due time.
Feel free to reopen this bug if the issue is still present.
Status: UNCONFIRMED → RESOLVED
Last Resolved: a year ago
Resolution: --- → WORKSFORME

Updated

10 months ago
Flags: needinfo?(zooko)
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