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RE: HTTPAPI returns a "Host name look up failed"
Hi Thomas,
I apologize for the delay in my response, I was out of commission for
a few days.
I believe the GEOIP program you downloaded is essentially the same as
the one I downloaded, although my HTTPAPI version is 1.23, and my
EXPAT is the already-compiled version. And I'm certain there are
differences in our system i OS versions - V5R1 for me.
Your debug instructions are just what I was hoping for, because if I
can localize the problem it would be much easier for you point me in
the right direction. However, when I get the environment set up and
arrive at my breakpoint as directed, and try to check the values list
for element.name using "EVAL element.name" I get an "identifier does
not exist" message. If I do a "find element.name" I can see
occurrences of it, so perhaps I don't understand the syntax of the
EVAL command in relation to a qualified entity. Sorry for my
ignorance, but I'd be grateful if you can walk me through this.
Thanks!
Rich
[1]i'm EMAILING FOR THE GREATER GOOD
Join me
> Subject: RE: HTTPAPI returns a "Host name look up failed"
> To: ftpapi@xxxxxxxxxxxxxxxxxxxxxx
> From: thomas.raddatz@xxxxxx
> Date: Tue, 28 Apr 2009 09:30:45 +0200
>
>
>
> Rich,
>
> I downloaded the GEOIP sample program from "
>
http://www.pentontech.com/IBMContent/Documents/article/56532_547_GeoIp
Service.zip"
> and I hope that it is the same that you use. I compiled and ran the
> program with no modifications and it returned the correct country
name. I
> am using HTTP API V1.24beta5 and I compiled the included EXPAT from
source.
>
> I suggest to add a breakpoint to the "endElement" procedure in
module
> HTTPXMLR4 at the following statement:
>
> if (p_newval <> *null); <== add breakpoint here
> xdealloc(p_newval);
> endif;
>
> Once that you are there check the content of variable
"element.name". These
> are the values you should get:
>
> ReturnCode
> IP
> ReturnCodeDetails
> CountryName
> CountryCode
> GetGeoIPResult
> GetGeoIPResponse
> soap:Body
> soap:Envelope
>
> Please also verify the content of "name" when you reach "endElement"
for
> the first time. In that case "element.name" should be "ReturnCode"
and
> "name" should be:
>
> > EVAL name :x 32
> 00000 00520065 00740075 0072006E 0043006F - .ê.Á.È.Í.Ê.>.{.?
> 00010 00640065 000000-- -------- -------- - .À.Á...Á.È./.Ñ4-
>
> (Values beyond "000000" at offset 0014 can be ignored.)
>
> a) If "name" equals the value as shown above but "element.name" is
wrong,
> something goes wrong with character translation.
> b) If both values meet the expected values, something is wrong with
the
> "MapXmlData" procedure interface. Check the value of
"root.namespace" to
> determine which callback type is used.
> c) If "name" does not meet the expected value, I assume that
something is
> wrong with your EXPAT service program.
>
> Also ensure that HTTPAPIR4 binds to the EXPAT service program that
you
> think it binds to. Use "DSPSRVPGM SRVPGM(HTTPAPIR4) DETAIL(*SRVPGM)"
to
> check which EXPAT service is used by HTTPAPIR4.
>
> Thomas.
>
>
> ftpapi-bounces@xxxxxxxxxxxxxxxxxxxxxx schrieb am 27.04.2009
23:17:25:
>
> >
> > 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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> > > > >
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References
1. http://im.live.com/Messenger/IM/Home/?source=EML_WLHM_GreaterGood
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