Subject: Re: bug#15905: 24.3; url-copy-file sometimes silently downloads garbage or incomplete file

From: Ted Zlatanov <[email-masked]>
Date: Sat, 16 Nov 2013 18:27:18 -0500

On Fri, 15 Nov 2013 08:13:13 -0800 Ryan <[email-masked]> wrote: 

R> In my experience, somewhere around 10% to 20% of the time the
R> downloaded file has some kind of anomaly. Anomalies that I have
R> observed so far include:

R> - the file is not completely retrieved;

R> - the file is complete, but has the following text appended:

>> 0
>> 
>> - Peer has closed the GnuTLS connection

R> - the file contains only an HTTP header and nothing else:

>> HTTP/1.1 200 OK
>> Server: GitHub.com
>> Date: Thu, 14 Nov 2013 20:54:41 GMT
>> Content-Type: text/plain; charset=utf-8
>> Transfer-Encoding: chunked
>> Status: 200 OK
>> Strict-Transport-Security: max-age=31536000
>> X-XSS-Protection: 1; mode=block
>> X-Content-Type-Options: nosniff
>> X-UA-Compatible: chrome=1
>> Access-Control-Allow-Origin: https://render.github.com

R> In all cases, "url-copy-file" returns t as if the retrieval was
R> completely successful, so the only way to detect these anomalies is to
R> inspect the file's content.

It's hard to tell from the bug report; can you tell us if your Emacs is
compiled with the GnuTLS library?  (the output of `configure' would
help, or tell us where you got the binary).

Ted