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Message |
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| mpquique |
 Posted: Tue Aug 22, 2006 11:37 am |
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Joined: 10 Aug 2006
Posts: 4
Location: La Coruña, Spain
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Hi,
The command:
http:request(get, {"http://www.google.com", []}, [], []).
BREAK: (a)bort (c)ontinue (p)roc info (i)nfo (l)oaded
(v)ersion (k)ill (D)b-tables (d)istribution
a
hangs. First of all I must say that I am not thinking in an inets problem (there's another weird symptom I will explain below), but hopefully some of the HTTP gurus out there, can recognize the problem.
I'm not aware of any proxy (at least there's no proxy in our local network), besides, the rest of applications are working perfectly, including the command:
ibrowse:send_req("http://www.google.com/", [], get).
{ok,"302",
[{"Location","http://www.google.es/"},
{"Cache-Control","private"},
{"Set-Cookie",
"PREF=ID=bc983ecf387ba336:TM=1156239649:LM=1156239649:S=ZSfv8LoQyM8z7sSA; expires=Sun, 17-Jan-2038 19:14:07 GMT; path=/; domain=.google.com"},
{"Content-Type","text/html"},
{"Server","GWS/2.1"},
{"Content-Length","218"},
{"Date","Tue, 22 Aug 2006 09:40:49 GMT"}],
"<HTML><HEAD><meta http-equiv=\"content-type\" content=\"text/html;charset=utf-8\">\n<TITLE>302 Moved</TITLE></HEAD><BODY>\n<H1>302 Moved</H1>\nThe document has moved\n<A HREF=\"http://www.google.es/\">here</A>.\r\n</BODY></HTML>\r\n"}
I've been able to reproduce http:request/4 behaviour using a telnet (please note how I'm defining the host header as "host").
$ telnet www.google.com 80
Trying 216.239.59.104...
Connected to www.google.com.
Escape character is '^]'.
GET / HTTP/1.1
host: www.google.com
Hangs, just like http:request/4 does. On the other hand, using a capital H ("Host"), it works.
$ telnet www.google.com 80
Trying 216.239.59.103...
Connected to www.google.com.
Escape character is '^]'.
GET / HTTP/1.1
Host: www.google.com
HTTP/1.1 302 Found
Location: http://www.google.es/
Cache-Control: private
Set-Cookie: PREF=ID=dd5dc6de7a134f4d:TM=1156239349:LM=1156239349:S=QhWNPomUpMfXMEjZ; expires=Sun, 17-Jan-2038 19:14:07 GMT; path=/; domain=.google.com
Content-Type: text/html
Server: GWS/2.1
Content-Length: 218
Date: Tue, 22 Aug 2006 09:35:49 GMT
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>302 Moved</TITLE></HEAD><BODY>
<H1>302 Moved</H1>
The document has moved
<A HREF="http://www.google.es/">here</A>.
</BODY></HTML>
I found that the ibrowse (Safari and Firefox) use "Host" format also. As far as I could see, inets seems to be the only application that doesn't use capital letters in the headers. Reading the Request Header Fields definitions (rfc2616), Host header is defined as "Host". Is this a must or just notation?
On the other hand, we used to think that we had "normal" Internet access, but a few days ago we realized that we could not access the site "http://www.esdebian.org" from any computer in our office (safari, firefox...all of them hang). Checking from a host outside of this network, we found that the site was alive. Since we didn't ever find problems with any other site, we didn't pay further attention to that, until we found this inets problem.
Note also that issuing the same http:request/4 from that host outside (the same one that accesses www.esdebian.org) it works.
Does anyone see how both facts could be related? or am I missing any inets configuration options (and our carrier is, for some extrange reason, banning debian  ? Thanks in advance.
Cheers,
Enrique |
_________________
http://www.nomasystems.com |
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| Mazen |
| Posted: Wed Aug 23, 2006 9:57 am |
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User
Joined: 20 Jul 2006
Posts: 164
Location: London
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What version are you using?
I tried your examples and they work fine for me...
I tried: HOST, HoST, hOST, HoSt.... they all work
HOWEVER, they return 302 (Moved)
The following in the erlang shell...
http:request(get, {"http://www.google.com", []}, [], []).
returns 200 |
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| francesco |
| Posted: Wed Aug 23, 2006 10:49 am |
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User
Joined: 07 Jul 2006
Posts: 249
Location: London
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My approach would be to turn on a local trace on all the functions using dbg and see where it hangs. A bit raw, but beats io format and should be straight to the point.
Francesco |
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