Re: HTTP implementation/usage problems (sendsms)

Navjot Singh <[email protected]> Fri, 13 Aug 2004 10:02:43 +0530
Newsgroups	gmane.comp.mobile.kannel.devel
Organization	Net4India Ltd.
Message-ID	<[email protected]>
are you closing the streams properly?

navjot

Oscar Medina Duarte wrote:

>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 
>
>
>
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