Firefox and Chrome occasional connect errors

[Klaus Zimmermann]

Hello all,



we have occasional EZProxy errors in Firefox and Chrome. I am not sure if
the issue is related to the “Chrome: no data received” issue which has been
recently discussed.



In Firefox, an off-campus user gets the error message: “The connection was
interrupted while the page was loading”. The error persists no matter which
database the user has selected, or how often he has restarted his browser.
For Firefox, we found a temporary solution: delete the browser history
(including cookies, offline-website-data and website-properties) and then
restart firefox.



In Chrome, the error message is: “SSL connection error: no secure connection
could be established to the server”. We found no solution so far, except
using a different browser.



The issue is hard to reproduce. It started a few months ago and has been
reported by several users, while EZProxy seems to work fine for the most
users.



Our system is proxy-by-port, with MaxVirtualHosts increased to 2000. EZProxy
runs on a webserver with a trusted ssl-certificate.



Has any one else faced these problems, and maybe found a solution?



Best regards,

Klaus Zimmermann

Hochschulbibliothek Münster, Germany







Dipl.-Bibl. Klaus Zimmermann

Hochschulbibliothek

Fachhochschule Münster

- University of Applied Sciences -

Raum D 118

Corrensstr. 25

D-48149 Münster

Fon:(49)0251 - 8364871

Mail: dv-***@fh-muenster.de



Von: Paul Stainthorp [mailto:***@lincoln.ac.uk]
Gesendet: Mittwoch, 1. Oktober 2014 16:57
An: EZProxy discussion list
Cc: Elif Varol
Betreff: RE: [ezproxy] Chrome "No data received"



Hi all.



Thanks for all the suggestions as to the cause of this one. We’ve still not
been able to find an easy solution that the user can follow, other than to
temporarily switch to using another browser.



Thanks again,



Paul



From: Mark James Strang [mailto:***@bgsu.edu]
Sent: 27 September 2014 22:43
To: EZProxy discussion list
Subject: Re: [ezproxy] Chrome "No data received"



We are just getting ready to switch to ezproxy and we've seen this happen
with just about all resources when patrons use chrome and the back arrow
button. We just moved our test server to the the most recent ezproxy
update. Early testing is encouraging that it solved the chrome back button
issue.
Mark

On Sep 27, 2014 3:33 PM, Andrew Anderson <***@lirn.net
<mailto:***@lirn.net> > wrote:



It’s probably a variant of this:



http://www.copernica.com/en/blog/how-chromes-pre-connect-breaks-haproxy-and-
http
--
Andrew Anderson, Director of Development, Library and Information Resources
Network, Inc.
<http://www.lirn.net/> http://www.lirn.net/ |
<http://www.twitter.com/LIRNnotes> http://www.twitter.com/LIRNnotes |
<http://www.facebook.com/LIRNnotes> http://www.facebook.com/LIRNnotes



On Sep 23, 2014, at 9:36, Paul Stainthorp <***@lincoln.ac.uk
<mailto:***@lincoln.ac.uk> > wrote:



Hello all,



We are getting some users reporting that they see the following error when
they hit one of our proxy-prefixed URLs using Google Chrome:



| “No data received”



I can’t see anything in our EZproxy logs; as far as I can tell the user is
not even getting as far as authenticating.



I can see from Googling that this is a sort-of-known Google Chrome problem,
but I couldn’t find a clear explanation or solution.



Has anyone else faced this problem with EZproxy-ed resources?



Many thanks,



Paul







Paul Stainthorp

Electronic Resources Librarian



Great Central Warehouse University Library

University of Lincoln

Brayford Pool

LINCOLN

LN6 7TS

United Kingdom



<tel:[phone]> tel:[phone]

<mailto:***@lincoln.ac.uk> mailto:***@lincoln.ac.uk

<http://library.lincoln.ac.uk/> http://library.lincoln.ac.uk/




The University of Lincoln, located in the heart of the city of Lincoln, has
established an international reputation based on high student satisfaction,
excellent graduate employment and world-class research.


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this and recommends recipients take appropriate precautions.

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[Simon McLeish]

Hi Klaus,

We've had that problem here (also proxy by port), and we think it is now
resolved after we raised it with EZProxy support at OCLC. It appears to
be something to do with the way that the browsers handle javascript
calls to Google APIs in proxied pages which makes them want to use https
for ports on the exproxy server which are http only.

The solution is to add:

NeverProxy apis.google.com

to the config file before the database definitions and restart ezproxy.

Hope this works for you too (and continues to work for us - we only
implemented it yesterday!).

Cheers,
Simon

Post by Klaus Zimmermann
Hello all,
we have occasional EZProxy errors in Firefox and Chrome. I am not sure
if the issue is related to the “Chrome: no data received” issue which
has been recently discussed.
In Firefox, an off-campus user gets the error message: “The connection
was interrupted while the page was loading”. The error persists no
matter which database the user has selected, or how often he has
delete the browser history (including cookies, offline-website-data
and website-properties) and then restart firefox.
In Chrome, the error message is: “SSL connection error: no secure
connection could be established to the server”. We found no solution
so far, except using a different browser.
The issue is hard to reproduce. It started a few months ago and has
been reported by several users, while EZProxy seems to work fine for
the most users.
Our system is proxy-by-port, with MaxVirtualHosts increased to 2000.
EZProxy runs on a webserver with a trusted ssl-certificate.
Has any one else faced these problems, and maybe found a solution?
Best regards,
Klaus Zimmermann
Hochschulbibliothek Münster, Germany
Dipl.-Bibl. Klaus Zimmermann
Hochschulbibliothek
Fachhochschule Münster
- University of Applied Sciences -
Raum D 118
Corrensstr. 25
D-48149 Münster
Fon:(49)0251 - 8364871
*Gesendet:* Mittwoch, 1. Oktober 2014 16:57
*An:* EZProxy discussion list
*Cc:* Elif Varol
*Betreff:* RE: [ezproxy] Chrome "No data received"
Hi all.
Thanks for all the suggestions as to the cause of this one. We’ve
still not been able to find an easy solution that the user can follow,
other than to temporarily switch to using another browser.
Thanks again,
Paul
*Sent:* 27 September 2014 22:43
*To:* EZProxy discussion list
*Subject:* Re: [ezproxy] Chrome "No data received"
We are just getting ready to switch to ezproxy and we've seen this
happen with just about all resources when patrons use chrome and the
back arrow button. We just moved our test server to the the most
recent ezproxy update. Early testing is encouraging that it solved
the chrome back button issue.
Mark
http://www.copernica.com/en/blog/how-chromes-pre-connect-breaks-haproxy-and-http
--
Andrew Anderson, Director of Development, Library and Information
Resources Network, Inc.
http://www.lirn.net/ | http://www.twitter.com/LIRNnotes | http://www.facebook.com/LIRNnotes
Hello all,
We are getting some users reporting that they see the following error
| “No data received”
I can’t see anything in our EZproxy logs; as far as I can tell the
user is not even getting as far as authenticating.
I can see from Googling that this is a sort-of-known Google Chrome
problem, but I couldn’t find a clear explanation or solution.
Has anyone else faced this problem with EZproxy-ed resources?
Many thanks,
Paul
Paul Stainthorp
Electronic Resources Librarian
Great Central Warehouse University Library
University of Lincoln
Brayford Pool
LINCOLN
LN6 7TS
United Kingdom
tel:[phone]
http://library.lincoln.ac.uk/
*The University of Lincoln, located in the heart of the city of
Lincoln, has established an international reputation based on high
student satisfaction, excellent graduate employment and world-class
research.*
The information in this e-mail and any attachments may be
confidential. If you have received this email in error please notify
the sender immediately and remove it from your system. Do not disclose
the contents to another person or take copies.
Email is not secure and may contain viruses. The University of Lincoln
makes every effort to ensure email is sent without viruses, but cannot
guarantee this and recommends recipients take appropriate precautions.
The University may monitor email traffic data and content in
accordance with its policies and English law. Further information can
be found at: http://www.lincoln.ac.uk/legal.

--
Dr Simon McLeish
Resource Discovery Architect
Bodleian Libraries
University of Oxford
***@bodleian.ox.ac.uk | ([phone]


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[Rieseler, Peter]

Simon - Thanks for the info on the fix!, this worked for us on FF issues

Best,
Peter

Peter Rieseler,
Head of Public Services,
Stevens-German Library,
Hartwick College, Oneonta, NY 13820

rieselerp at hartwick dot edu | V: 607.431.4395 | F: 607.431.4457

On Thu, Oct 2, 2014 at 5:20 AM, Simon McLeish <

Post by Simon McLeish
Hi Klaus,
We've had that problem here (also proxy by port), and we think it is now
resolved after we raised it with EZProxy support at OCLC. It appears to be
something to do with the way that the browsers handle javascript calls to
Google APIs in proxied pages which makes them want to use https for ports
on the exproxy server which are http only.
NeverProxy apis.google.com
to the config file before the database definitions and restart ezproxy.
Hope this works for you too (and continues to work for us - we only
implemented it yesterday!).
Cheers,
Simon
Hello all,
we have occasional EZProxy errors in Firefox and Chrome. I am not sure if
the issue is related to the “Chrome: no data received” issue which has been
recently discussed.
In Firefox, an off-campus user gets the error message: “The connection was
interrupted while the page was loading”. The error persists no matter which
database the user has selected, or how often he has restarted his browser.
For Firefox, we found a temporary solution: delete the browser history
(including cookies, offline-website-data and website-properties) and then
restart firefox.
In Chrome, the error message is: “SSL connection error: no secure
connection could be established to the server”. We found no solution so
far, except using a different browser.
The issue is hard to reproduce. It started a few months ago and has been
reported by several users, while EZProxy seems to work fine for the most
users.
Our system is proxy-by-port, with MaxVirtualHosts increased to 2000.
EZProxy runs on a webserver with a trusted ssl-certificate.
Has any one else faced these problems, and maybe found a solution?
Best regards,
Klaus Zimmermann
Hochschulbibliothek MÃŒnster, Germany
Dipl.-Bibl. Klaus Zimmermann
Hochschulbibliothek
Fachhochschule MÃŒnster
- University of Applied Sciences -
Raum D 118
Corrensstr. 25
D-48149 MÃŒnster
Fon:(49)0251 - 8364871
*Gesendet:* Mittwoch, 1. Oktober 2014 16:57
*An:* EZProxy discussion list
*Cc:* Elif Varol
*Betreff:* RE: [ezproxy] Chrome "No data received"
Hi all.
Thanks for all the suggestions as to the cause of this one. We’ve still
not been able to find an easy solution that the user can follow, other than
to temporarily switch to using another browser.
Thanks again,
Paul
*Sent:* 27 September 2014 22:43
*To:* EZProxy discussion list
*Subject:* Re: [ezproxy] Chrome "No data received"
We are just getting ready to switch to ezproxy and we've seen this happen
with just about all resources when patrons use chrome and the back arrow
button. We just moved our test server to the the most recent ezproxy
update. Early testing is encouraging that it solved the chrome back button
issue.
Mark
http://www.copernica.com/en/blog/how-chromes-pre-connect-breaks-haproxy-and-http
--
Andrew Anderson, Director of Development, Library and Information
Resources Network, Inc.
http://www.lirn.net/ | http://www.twitter.com/LIRNnotes |
http://www.facebook.com/LIRNnotes
Hello all,
We are getting some users reporting that they see the following error when
| “No data received”
I can’t see anything in our EZproxy logs; as far as I can tell the user is
not even getting as far as authenticating.
I can see from Googling that this is a sort-of-known Google Chrome
problem, but I couldn’t find a clear explanation or solution.
Has anyone else faced this problem with EZproxy-ed resources?
Many thanks,
Paul
Paul Stainthorp
Electronic Resources Librarian
Great Central Warehouse University Library
University of Lincoln
Brayford Pool
LINCOLN
LN6 7TS
United Kingdom
tel:[phone] <[phone]>
http://library.lincoln.ac.uk/
*The University of Lincoln, located in the heart of the city of Lincoln,
has established an international reputation based on high student
satisfaction, excellent graduate employment and world-class research.*
The information in this e-mail and any attachments may be confidential. If
you have received this email in error please notify the sender immediately
and remove it from your system. Do not disclose the contents to another
person or take copies.
Email is not secure and may contain viruses. The University of Lincoln
makes every effort to ensure email is sent without viruses, but cannot
guarantee this and recommends recipients take appropriate precautions.
The University may monitor email traffic data and content in accordance
http://www.lincoln.ac.uk/legal.
--
Dr Simon McLeish
Resource Discovery Architect
Bodleian Libraries

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[Deborah Babb]

Klaus,

We are experiencing the exact same problems. Chrome will suddenly start producing errors, but the user can get into EZproxy via Firefox, IE, or Safari. Or we'll have users get that Firefox error you mentioned, but they can get in via Chrome or another browser.

We are also set up to proxy-by-port with a large limit on Max VirtualHosts and a trusted SSL certificate.

I contacted EZproxy support but was told they can't help with issues like this, probably because they are so inconsistent and hard to duplicate.

I have not found a solution yet, either.

Deborah

[cid:***@01CEAAE1.8B9BF360]

Deborah Babb
Electronic Services Librarian
Plough Library
Christian Brothers University
650 East Parkway South
Memphis, TN 38104

(901) 321- 3433
***@cbu.edu<mailto:***@cbu.edu>
http://www.cbu.edu/library



From: Klaus Zimmermann [mailto:***@fh-muenster.de]
Sent: Thursday, October 02, 2014 3:27 AM
To: EZProxy discussion list
Subject: [ezproxy] Firefox and Chrome occasional connect errors

Hello all,

we have occasional EZProxy errors in Firefox and Chrome. I am not sure if the issue is related to the "Chrome: no data received" issue which has been recently discussed.

In Firefox, an off-campus user gets the error message: "The connection was interrupted while the page was loading". The error persists no matter which database the user has selected, or how often he has restarted his browser. For Firefox, we found a temporary solution: delete the browser history (including cookies, offline-website-data and website-properties) and then restart firefox.

In Chrome, the error message is: "SSL connection error: no secure connection could be established to the server". We found no solution so far, except using a different browser.

The issue is hard to reproduce. It started a few months ago and has been reported by several users, while EZProxy seems to work fine for the most users.

Our system is proxy-by-port, with MaxVirtualHosts increased to 2000. EZProxy runs on a webserver with a trusted ssl-certificate.

Has any one else faced these problems, and maybe found a solution?

Best regards,
Klaus Zimmermann
Hochschulbibliothek Münster, Germany



Dipl.-Bibl. Klaus Zimmermann
Hochschulbibliothek
Fachhochschule Münster
- University of Applied Sciences -
Raum D 118
Corrensstr. 25
D-48149 Münster
Fon:(49)0251 - 8364871
Mail: dv-***@fh-muenster.de<mailto:dv-***@fh-muenster.de>

Von: Paul Stainthorp [mailto:***@lincoln.ac.uk]
Gesendet: Mittwoch, 1. Oktober 2014 16:57
An: EZProxy discussion list
Cc: Elif Varol
Betreff: RE: [ezproxy] Chrome "No data received"

Hi all.

Thanks for all the suggestions as to the cause of this one. We've still not been able to find an easy solution that the user can follow, other than to temporarily switch to using another browser.

Thanks again,

Paul

From: Mark James Strang [mailto:***@bgsu.edu]
Sent: 27 September 2014 22:43
To: EZProxy discussion list
Subject: Re: [ezproxy] Chrome "No data received"


We are just getting ready to switch to ezproxy and we've seen this happen with just about all resources when patrons use chrome and the back arrow button. We just moved our test server to the the most recent ezproxy update. Early testing is encouraging that it solved the chrome back button issue.
Mark
On Sep 27, 2014 3:33 PM, Andrew Anderson <***@lirn.net<mailto:***@lirn.net>> wrote:

It's probably a variant of this:

http://www.copernica.com/en/blog/how-chromes-pre-connect-breaks-haproxy-and-http

--
Andrew Anderson, Director of Development, Library and Information Resources Network, Inc.
http://www.lirn.net/ | http://www.twitter.com/LIRNnotes | http://www.facebook.com/LIRNnotes

On Sep 23, 2014, at 9:36, Paul Stainthorp <***@lincoln.ac.uk<mailto:***@lincoln.ac.uk>> wrote:

Hello all,

We are getting some users reporting that they see the following error when they hit one of our proxy-prefixed URLs using Google Chrome:

| "No data received"

I can't see anything in our EZproxy logs; as far as I can tell the user is not even getting as far as authenticating.

I can see from Googling that this is a sort-of-known Google Chrome problem, but I couldn't find a clear explanation or solution.

Has anyone else faced this problem with EZproxy-ed resources?

Many thanks,

Paul



Paul Stainthorp
Electronic Resources Librarian

Great Central Warehouse University Library
University of Lincoln
Brayford Pool
LINCOLN
LN6 7TS
United Kingdom

tel:[phone]
mailto:***@lincoln.ac.uk
http://library.lincoln.ac.uk/


The University of Lincoln, located in the heart of the city of Lincoln, has established an international reputation based on high student satisfaction, excellent graduate employment and world-class research.

The information in this e-mail and any attachments may be confidential. If you have received this email in error please notify the sender immediately and remove it from your system. Do not disclose the contents to another person or take copies.

Email is not secure and may contain viruses. The University of Lincoln makes every effort to ensure email is sent without viruses, but cannot guarantee this and recommends recipients take appropriate precautions.

The University may monitor email traffic data and content in accordance with its policies and English law. Further information can be found at: http://www.lincoln.ac.uk/legal.

You are currently subscribed to ezproxy as: ***@lirn.net<mailto:***@lirn.net>.
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[Robinson, Sharon]

Hi,

I would be inclined to go back to OCLC and ask whether the advice they gave us in March (see below) would still hold true for the problem you're experiencing.

We had a similar, I think, problem in March which we reported to OCLC.

They came back to us with the following (their call no. was SR 1-2144562888: EZproxy Problems)

"Here is response from Chris (developer of EZproxy) that he provided Mount Royal. Please look into this response if the issue returns:

It took a while, but I found the cause and it has some interesting implications.

When proxying this site, they are also proxying https://apis.google.com. When that site is accessed, it is sending back this response header:

Strict-Transport-Security: max-age=10886400

This header is described in http://tools.ietf.org/html/rfc6797 as indicating that the browser is required to use only https when interacting with the host. Once this header comes back, the browser starts turning every request from http requests to https on every port, and since this site is using proxy by port, this destroys all communication on the other ports and ends up killing EZproxy.

My first recommendation would be to try not proxying apis.google.com with:

NeverProxy apis.google.com

in config.txt, combined with a restart, cache clear, and retest.

If that doesn't work, my recommendation will be using proxy by hostname which is immune to this since it uses different hostnames.

Alternatively, it may be necessary to alter EZproxy to block this header in translate.c:ProcessResponse to guard browsers against it, but that is a code change and can't happen quickly."

This solution fixed the problem for us and we have since moved to proxy by hostname. We are and were on EZproxy 5.6.1 GA [Windows].

Regards,

Sharon

From: Klaus Zimmermann [mailto:***@fh-muenster.de]
Sent: 02 October 2014 09:27
To: EZProxy discussion list
Subject: [ezproxy] Firefox and Chrome occasional connect errors

Hello all,

we have occasional EZProxy errors in Firefox and Chrome. I am not sure if the issue is related to the "Chrome: no data received" issue which has been recently discussed.

In Firefox, an off-campus user gets the error message: "The connection was interrupted while the page was loading". The error persists no matter which database the user has selected, or how often he has restarted his browser. For Firefox, we found a temporary solution: delete the browser history (including cookies, offline-website-data and website-properties) and then restart firefox.

In Chrome, the error message is: "SSL connection error: no secure connection could be established to the server". We found no solution so far, except using a different browser.

The issue is hard to reproduce. It started a few months ago and has been reported by several users, while EZProxy seems to work fine for the most users.

Our system is proxy-by-port, with MaxVirtualHosts increased to 2000. EZProxy runs on a webserver with a trusted ssl-certificate.

Has any one else faced these problems, and maybe found a solution?

Best regards,
Klaus Zimmermann
Hochschulbibliothek Münster, Germany



Dipl.-Bibl. Klaus Zimmermann
Hochschulbibliothek
Fachhochschule Münster
- University of Applied Sciences -
Raum D 118
Corrensstr. 25
D-48149 Münster
Fon:(49)0251 - 8364871
Mail: dv-***@fh-muenster.de<mailto:dv-***@fh-muenster.de>

Von: Paul Stainthorp [mailto:***@lincoln.ac.uk]
Gesendet: Mittwoch, 1. Oktober 2014 16:57
An: EZProxy discussion list
Cc: Elif Varol
Betreff: RE: [ezproxy] Chrome "No data received"

Hi all.

Thanks for all the suggestions as to the cause of this one. We've still not been able to find an easy solution that the user can follow, other than to temporarily switch to using another browser.

Thanks again,

Paul

From: Mark James Strang [mailto:***@bgsu.edu]
Sent: 27 September 2014 22:43
To: EZProxy discussion list
Subject: Re: [ezproxy] Chrome "No data received"


We are just getting ready to switch to ezproxy and we've seen this happen with just about all resources when patrons use chrome and the back arrow button. We just moved our test server to the the most recent ezproxy update. Early testing is encouraging that it solved the chrome back button issue.
Mark
On Sep 27, 2014 3:33 PM, Andrew Anderson <***@lirn.net<mailto:***@lirn.net>> wrote:

It's probably a variant of this:

http://www.copernica.com/en/blog/how-chromes-pre-connect-breaks-haproxy-and-http

--
Andrew Anderson, Director of Development, Library and Information Resources Network, Inc.
http://www.lirn.net/ | http://www.twitter.com/LIRNnotes | http://www.facebook.com/LIRNnotes

On Sep 23, 2014, at 9:36, Paul Stainthorp <***@lincoln.ac.uk<mailto:***@lincoln.ac.uk>> wrote:

Hello all,

We are getting some users reporting that they see the following error when they hit one of our proxy-prefixed URLs using Google Chrome:

| "No data received"

I can't see anything in our EZproxy logs; as far as I can tell the user is not even getting as far as authenticating.

I can see from Googling that this is a sort-of-known Google Chrome problem, but I couldn't find a clear explanation or solution.

Has anyone else faced this problem with EZproxy-ed resources?

Many thanks,

Paul



Paul Stainthorp
Electronic Resources Librarian

Great Central Warehouse University Library
University of Lincoln
Brayford Pool
LINCOLN
LN6 7TS
United Kingdom

tel:[phone]
mailto:***@lincoln.ac.uk
http://library.lincoln.ac.uk/


The University of Lincoln, located in the heart of the city of Lincoln, has established an international reputation based on high student satisfaction, excellent graduate employment and world-class research.

The information in this e-mail and any attachments may be confidential. If you have received this email in error please notify the sender immediately and remove it from your system. Do not disclose the contents to another person or take copies.

Email is not secure and may contain viruses. The University of Lincoln makes every effort to ensure email is sent without viruses, but cannot guarantee this and recommends recipients take appropriate precautions.

The University may monitor email traffic data and content in accordance with its policies and English law. Further information can be found at: http://www.lincoln.ac.uk/legal.

You are currently subscribed to ezproxy as: ***@lirn.net<mailto:***@lirn.net>.
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