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RE: HTTPAPI returns a "Host name look up failed"
Hi Scott,
I'm not sure it would be possible for you to reproduce the problem,
since I'm working with OS/400 at V5R1. But the HTTPAPI version is
1.23, and I used the compiled EXPAT version, rather than compiling it
from source.
I'm thinking if I can trace the progress of the request and the
response by using debug, I might be able to see where it went wrong.
However, I am a little awkward with the standard source-level debug:
As you probably saw, Thomas gave me some debugging tips that
I've tried, but will probably need more help to get through...
I do appreciate any input you can give - this is a little weird.
Thanks,
Rich
[1]i'm EMAILING FOR THE GREATER GOOD
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> Date: Mon, 27 Apr 2009 22:36:33 -0700
> From: sk@xxxxxxxxxxxxxxxx
> To: ftpapi@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: HTTPAPI returns a "Host name look up failed"
>
> Hi Rich,
>
> I think we're kinda struggling to help you, because none of us have
had
> the problem you describe. Can you explain how I Can reproduce the
> problem on my own machine?
>
>
> Rich Kitterman wrote:
> > Thomas,
> >
> > I don't believe so. At least I'm not specifically making that
call.
> > I'm simply using the GEOIP program stock out-of-the-box and was
> > assuming it would work as-is. Is the modified procedure interface
you
> > mentioned supposed to replace the one currently there for the
> > MapXmlData procedure? I'm not certain what I should do here...
> >
> > Thanks,
> >
> > Rich
> >
> > > Subject: RE: HTTPAPI returns a "Host name look up failed"
> > > To: ftpapi@xxxxxxxxxxxxxxxxxxxxxx
> > > From: thomas.raddatz@xxxxxx
> > > Date: Fri, 24 Apr 2009 08:26:09 +0200
> > >
> > >
> > > Rich,
> > >
> > > Do you have a call to http_xmlns(*ON) in your program?. If
> > namespaces are
> > > enabled, the procedure interface should be:
> > >
> > > D endElementNS PR
> > > D userdata * value
> > > D depth 10I 0 value
> > > D ns 1024A const varying
> > > D name 1024A const varying
> > > D path 24576A const varying
> > > D value 65535A const
> > > D Attrs * const dim(32767)
> > > D options(*varsize)
> > >
> > > Thomas.
> > >
> > >
> > > ftpapi-bounces@xxxxxxxxxxxxxxxxxxxxxx schrieb am 24.04.2009
> > 01:50:57:
> > >
> > > >
> > > > Hi Scott,
> > > >
> > > >
> > > >
> > > > Here's what I believe is the relevant portion of th debuge
log:
> > > >
> > > >
> > > >
> > > > SetError() #13: HTTP/1.1 100 Continue
> > > > senddoc(): entered
> > > > <soapenv:Envelope
> > > xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/
> > > > " xmlns:web="http://www.webservicex.net";> <soapenv:Header/>
> > > > <soapenv:Body> <web:GetGeoIP> <!--Optional:-->
<web:IPAddress>209.
> > > > 131.36.158 </web:IPAddress> </web:GetGeoIP> </soapenv:Body>
> > > > </soapenv:Envelope>
> > > > recvresp(): entered
> > > > HTTP/1.1 200 OK
> > > > Date: Wed, 22 Apr 2009 22:34:18 GMT
> > > > Server: Microsoft-IIS/6.0
> > > >
> > > > X-Powered-By: ASP.NET
> > > > X-AspNet-Version: 1.1.4322
> > > > Cache-Control: private, max-age=0
> > > > Content-Type: text/xml; charset=utf-8
> > > > Content-Length: 521
> > > >
> > > > SetError() #13: HTTP/1.1 200 OK
> > > > recvdoc parms: identity 521
> > > > header_load_cookies() entered
> > > > recvdoc(): entered
> > > > SetError() #0:
> > > > <?xml version="1.0" encoding="utf-8"?><soap:Envelope
xmlns:soap="
> > > > http://schemas.xmlsoap.org/soap/envelope/";
> > xmlns:xsi="http://www.w3.
> > > > org/2001/XMLSchema-instance"
> > xmlns:xsd="http://www.w3.org/2001/XMLSchema
> > > > "><soap:Body><GetGeoIPResponse
xmlns="http://www.webservicex.net
> > > > "><GetGeoIPResult><ReturnCode>1</ReturnCode><IP>209.131.36.158
> > > > </IP><ReturnCodeDetails>Record
> > > > Found</ReturnCodeDetails><CountryName>UNITED
> > > >
> > >
> >
STATES</CountryName><CountryCode>US</CountryCode></GetGeoIPResult></Ge
> > tGeoIPResponse></soap:
> > >
> > > > Body></soap:Envelope>
> > > > http_close(): entered
> > > > New iconv() objects set, PostRem=1208. PostLoc=0. ProtRem=819.
> > ProtLoc=0
> > > > http_persist_open(): entered
> > > > http_long_ParseURL(): entered
> > > > DNS resolver retrans: 2
> > > > DNS resolver retry : 2
> > > > DNS resolver options: x'00000136'
> > > > DNS default domain: S105VX7M.COM
> > > > DNS server found: 68.87.85.98
> > > > DNS server found: 68.87.69.146
> > > > http_persist_post(): entered
> > > > http_long_ParseURL(): entered
> > > > do_post(): entered
> > > > POST /geoipservice.asmx HTTP/1.1
> > > > Host: www.webservicex.net
> > > > User-Agent: http-api/1.23
> > > > Content-Type: text/xml; charset=UTF-8
> > > > SOAPAction: "http://www.webservicex.net/GetGeoIP";
> > > > Expect: 100-continue
> > > > Content-Length: 279
> > > >
> > > >
> > > >
> > > > As you can see, the country name value is "UNITED STATES". The
> > > > returned XML looks ok to me, but by the time the MapXmlData
> > > > Procedure gets ahold of the parsed values, it's all garbage,
which
> > > > is why the if construct that tests for the "name" variable to
be
> > the
> > > > value 'CountryName' is never satisfied, and even if it were,
the
> > > > value of variable "value" is also garbage.
> > > >
> > > >
> > > >
> > > > P MapXmlData B
> > > > D MapXmlData PI
> > > > D country 52a varying
> > > > D depth 10I 0 value
> > > > D name 1024A varying const
> > > > D path 24576A varying const
> > > > D value 65535A varying const
> > > > D attrs * dim(32767)
> > > > D const options(*varsize)
> > > >
> > > > /free
> > > > if (name = 'CountryName');
> > > > country = value;
> > > > endif;
> > > > /end-free
> > > > P E
> > > >
> > > >
> > > > Is it possible that my EXPAT setup is incorrect, or mismatched
> > > > somehow with my HTTPAPI install (ver 1.23)? I'm pretty certain
I
> > > > downloaded and installed the precompiled version of EXPAT
(version
> > > > 2.0.0 in SAVF format). I would really appreciate some help in
> > > > figuring this out.
> > > >
> > > >
> > > >
> > > > Thanks,
> > > >
> > > >
> > > >
> > > > Rich
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > EMAILING FOR THE GREATER GOOD
> > > > Join me
> > > >
> > > >
> > > >
> > > > > Date: Wed, 22 Apr 2009 20:36:17 -0500
> > > > > From: sk@xxxxxxxxxxxxxxxx
> > > > > To: ftpapi@xxxxxxxxxxxxxxxxxxxxxx
> > > > > Subject: Re: HTTPAPI returns a "Host name look up failed"
> > > > >
> > > > > Hi Rich,
> > > > >
> > > > > Create a debug log (like you did before) and look at what is
> > being
> > > > > received from the web service -- the details will be in that
> > debug
> > > file.
> > > > >
> > > > >
> > > > >
> > > > > Rich Kitterman wrote:
> > > > > > Hi Scott,
> > > > > > > Just in case you didn't understand this: Your messages
are
> > going to
> > > > > > a
> > > > > > > public mailing list. All participants on the mailing
list
> > can read
> > > > > > > them. I'm able to read your response to Michael Ryan,
you
> > don't
> > > have
> > > > > > to
> > > > > > > repeat it.
> > > > > > Thanks for the clarification. I understand that the
> > correspondence
> > > > > > gets bounced to all on the public mailing list. I just
didn't
> > know if
> > > > > > you personally were following every piece, so as a
courtesy I
> > > repeated
> > > > > > it.
> > > > > > > Here's why I would not have suspected that: You told me
that
> > a PING
> > > > > > > worked. PING uses the same DNS resolver (configured with
> > CFGTCP 12)
> > > > > > > that HTTPAPI. Why did it work for PING and not for
HTTPAPI?
> > > > > > I was pinging with the same IP address I gave GEOIP as a
parm.
> > I
> > > > > > think my confusion with the error message is in
understanding
> > what
> > > > > > host name was actually being looked up. Did the error have
> > reference
> > > > > > to the target IP address I was trying to get GEOIP to
return a
> > > country
> > > > > > name for, or was it referring to something else? I suspect
the
> > > > > > latter.
> > > > > >
> > > > > > > Hard to say. You really haven't provided any information
> > other than
> > > > > > > "something didn't work". Check the XML that was returned
> > from the
> > > > > > web
> > > > > > > service and see if it contains the country name. If it
was,
> > then
> > > the
> > > > > > > problem is in the way your interfacing to the XML
parser.
> > > > > > I agree. The problem is that I'm ignorant enough that I'm
not
> > sure
> > > > > > where (which HTTPAPI module or procedure) to look for the
XML
> > string
> > > > > > coming back from the web service. If you can point me in
the
> > right
> > > > > > direction, I'd be grateful. What I did determine is that
when
> > I go to
> > > > > >
[1]http://www.webservicex.net/geoipservice.asmx?op=GetGeoIP
> > and test
> > > > > > the same IP address I pass to GEOIP, the XML I get back
is:
> > > > > >
> > > > > > <?xml version="1.0" encoding="utf-8" ?>
> > > > > > - <GeoIP xmlns:xsd="[2]http://www.w3.org/2001/XMLSchema";
> > > > > > xmlns:xsi="[3]http://www.w3.org/2001/XMLSchema-instance";
> > > > > > xmlns="[4]http://www.webservicex.net";>
> > > > > > <ReturnCode>1</ReturnCode>
> > > > > > <IP>209.131.36.158</IP>
> > > > > > <ReturnCodeDetails>Record Found</ReturnCodeDetails>
> > > > > > <CountryName>UNITED STATES</CountryName>
> > > > > > <CountryCode>US</CountryCode>
> > > > > > </GeoIP>
> > > > > >
> > > > > > I appreciate your patience, as you can see I'm completely
a
> > novice
> > > > > > with this.
> > > > >
>
>
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References
1. http://im.live.com/Messenger/IM/Home/?source=EML_WLHM_GreaterGood
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