Hi all !
I'm not sure yet if I'm doing something wrong, but I think we may have a
bug on http implementation, but is hard to explain, so please be
patient.
What am I doing?
I'm sending a sms request (MO) to a servlet, the servlet should reply
using the sendsms http interface, that is requesting a url like:
http://localhost:8080/kannel_test/KannelTest?from=222140576&to=4378&keyWord=ll9f&scndWord=segunda&theRest=todo%20lo%20demas
The related confs:
group = smsbox
bearerbox-host = localhost
sendsms-port = 64235
global-sender = 4378
reply-couldnotfetch = "Contacta a soporte code 1"
reply-couldnotrepresent = "Contacta a soporte code 2"
reply-requestfailed = "Contacta a soporte code 3"
reply-emptymessage = "Contacta a soporte code 4"
group = sms-service
keyword = default
post-url =
"http://localhost:8080/kannel_test/KannelTest?from=%p&to=%P&keyWord=%k&scndWord=%s&theRest=%r";
#accept-x-kannel-headers = true
max-messages = 0
What is the problem?
The problem is that when my java app tries to get the URL, I get an
exception like:
java.net.SocketException: Unexpected end of file from server
in the JVM, and the debug on smsbox looks like:
2004-08-12 18:30:49 [13488] [2] DEBUG: HTTP: Creating HTTPClient for
`127.0.0.1'.
2004-08-12 18:30:49 [13488] [1] DEBUG: HTTP: Destroying HTTPClient area
0x941f2c8.
2004-08-12 18:30:49 [13488] [1] DEBUG: HTTP: Destroying HTTPClient for
`127.0.0.1'.
2004-08-12 18:30:49 [13488] [2] DEBUG: HTTP: Creating HTTPClient for
`127.0.0.1'.
2004-08-12 18:30:49 [13488] [1] DEBUG: HTTP: Destroying HTTPClient area
0x941f2c8.
2004-08-12 18:30:49 [13488] [1] DEBUG: HTTP: Destroying HTTPClient for
`127.0.0.1'.
Ok, that looks like a problem at my java app, so I tried connecting to
another url with my app with no problem, thats why I partially discarded
that possibility.
The next thing that may had gone wrong was the URL creation, so I tried
with Mozilla using the url generated by my app, and it worked fine.
So, I decided to sniff and compare 3 tests:
1.- My App connecting to www.google.com :
My app sent this:
GET / HTTP/1.1
User-Agent: Java/1.4.2_03
Host: www.google.com
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
and received this from google:
HTTP/1.1 302 Found
Location:
http://www.google.com.mx/cxfer?c=PREF%3D:TM%3D1092355048:S%3DKFxs1Ocs1_d6SPlR
Set-Cookie:
PREF=ID=7296c503648eed6e:CR=1:TM=1092355048:LM=1092355048:S=_Z4iNjWgx73z9Dz1;
expires=Sun, 17-Jan-2038 19:14:07 GMT; path=/; domain=.google.com
Content-Type: text/html
Server: GWS/2.1
Content-Length: 207
Date: Thu, 12 Aug 2004 23:57:28 GMT
<HTML><HEAD><TITLE>302 Moved</TITLE></HEAD><BODY>
<H1>302 Moved</H1>
The document has moved
<A
HREF="http://www.google.com.mx/cxfer?c=PREF%3D:TM%3D1092355048:S%3DKFxs1Ocs1_d6SPlR";>here</A>.
</BODY></HTML>
No exceptions thrown, and sniffing seems quite ok to me.
2.- Mozilla connecting to the URL created by my app:
Mozila said:
GET
/cgi-bin/sendsms?username=xxx&password=xxx&to=2221401576&from=4378&text=mensaje
HTTP/1.1
Host: localhost:64235
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1)
Gecko/20031030
Accept:
text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,video/x-mng,image/png,image/jpeg,image/gif;q=0.2,*/*;q=0.1
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Kannel responded:
HTTP/1.1 202 Accepted
Server: Kannel/cvs-20040812
Content-Length: 5
Content-type: text/html
Pragma: no-cache
Cache-Control: no-cache
Sent.
And everything worked smoothly.
3.- My App sending via Kannel :
My app said:
GET
/cgi-bin/sendsms?username=xxx&password=xxx&to=2221401576&from=4378&text=mensaje via
http request HTTP/1.1
User-Agent: Java/1.4.2_03
Host: localhost:64235
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
And Kannel had nothing to say... Exception was thrown and the problem I
explained before.
Flags at TCP level :
myApp [SYN]
Kannel [SYN, ACK]
myApp [ACK]
myApp [PSH, ACK] Here goes the HTTP request
{
Kannel [ACK]
Kannel [FIN, ACK]
instead of:
Kannel [ACK]
Kannel [PSH, ACK] HTTP response from kannel
}
...
I'm not very http literate, but I see no reason for kannel to reject my
connection from my java app, there are some obvious differences from the
Mozilla version of the request to java's request, but, should that be an
issue for Kannel?
BTW: the piece of code I'm connecting with at my java app is :
... some code ...
// At this point sb.toString returns the full URL to connect to
url = new URL(sb.toString());
// The exception is thrown at this line, at the URL.openStream() method.
br = new BufferedReader(new InputStreamReader(url.openStream()));
... some code ...
Thanks for the patience on reading this looong e-mail, and please tell
me what do you think about it, or if someone know a better way of doing
that in java, I will appreciate it!!
P.S. also tell me if I'm missing some info to post.
== Oscar
OM MANI PEME HUM
.
