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Message
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| dsteinmann |
 Posted: Wed Dec 09, 2015 4:08 am Post subject: POST multipart/form-data with HTTPRequestNode |
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Novice
Joined: 09 Dec 2015
Posts: 15
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The flow creates a MIME multipart/form-data message and send it via HTTPRequestNode. Problem is that the target server does not accept the request complaining about wrong boundaries.
The message is generated like this:
| Code: |
DECLARE CONTENT BLOB ASBITSTREAM(InputRoot.XMLNSC, InputProperties.Encoding, InputProperties.CodedCharSetId);
SET OutputRoot.Properties.CodedCharSetId = 1208;
SET OutputRoot.Properties.ContentType = 'multipart/form-data; boundary=----------------------12a063b587462211';
SET OutputRoot.HTTPRequestHeader.Accept = '*/*';
CREATE LASTCHILD OF OutputRoot DOMAIN('MIME');
CREATE LASTCHILD OF OutputRoot.MIME TYPE Name NAME 'Parts';
CREATE LASTCHILD OF OutputRoot.MIME.Parts TYPE Name NAME 'Part';
DECLARE P1 REFERENCE TO OutputRoot.MIME.Parts.Part;
CREATE FIELD P1."Content-Type" TYPE NameValue VALUE 'application/xml';
CREATE FIELD P1."Content-Disposition" TYPE NameValue VALUE 'form-data; name="REQUEST"';
CREATE LASTCHILD OF P1 TYPE Name NAME 'Data';
CREATE LASTCHILD OF P1.Data DOMAIN('BLOB') PARSE(CONTENT);
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The target server does not like the extra empty line after the HTTP header and the first boundary.
If I create the multipart/form-data request in the BLOB domain, the target server is happy:
| Code: |
DECLARE CR BLOB CAST(X'0D0A' AS BLOB);
SET OutputRoot.Properties.CodedCharSetId = 1208;
SET OutputRoot.HTTPRequestHeader."Content-Type" = 'multipart/form-data; boundary=TheBoundary';
SET OutputRoot.HTTPRequestHeader.Accept = '*/*';
DECLARE body BLOB '';
SET body = body || CAST('--TheBoundary' AS BLOB CCSID 1208);
SET body = body || CR || CAST('Content-Disposition: form-data; name="REQUEST"' AS BLOB CCSID 1208);
SET body = body || CR || CAST('Content-Type: application/xml' AS BLOB CCSID 1208);
SET body = body || CR || CR || ASBITSTREAM(InputRoot.XMLNSC, InputProperties.Encoding, InputProperties.CodedCharSetId);
SET body = body || CR || CAST('--TheBoundary' AS BLOB CCSID 1208);
SET body = body || CR;
SET OutputRoot.BLOB.BLOB = body;
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Does someone know how I can create the MIME message so this extra empty line after the HTTP Headers disappears? |
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| dsteinmann |
| Posted: Wed Dec 09, 2015 4:10 am Post subject: |
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Novice
Joined: 09 Dec 2015
Posts: 15
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| Sorry, I could not post how the HTTP Request looks on the wire (captured with Wireshark), because the forum did not allow me to enter URLs/links. |
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| smdavies99 |
| Posted: Wed Dec 09, 2015 4:32 am Post subject: |
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Jedi Council
Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.
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Now that you have posted twice why not try to post the url/links again.
The restriction is there to stop automated spam bots crapping all over the site.
_________________
WMQ User since 1999
MQSI/WBI/WMB/'Thingy' User since 2002
Linux user since 1995
Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions. |
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| dsteinmann |
| Posted: Wed Dec 09, 2015 8:38 am Post subject: |
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Novice
Joined: 09 Dec 2015
Posts: 15
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| Quote: |
Now that you have posted twice why not try to post the url/links again.
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Good point!
Here is the problem message on the wire created by the MIME domain with the two empty lines between HTTP header:
| Code: |
POST /services/KMS/response.cfm HTTP/1.1
Host: secure.intrum.ch
...
Accept: */*
Content-Type: multipart/form-data; boundary=------------------------12a063b587462211
--------------------------12a063b587462211
Content-Disposition: form-data; name="REQUEST"
Content-Type: application/xml
<n:request xmlns:n="http://www.intrum.ch/schema">
...
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And here the good message on the wire created by the BLOB domain:
| Code: |
POST /services/KMS/response.cfm HTTP/1.1
Host: secure.intrum.ch
...
Accept: */*
Content-Type: multipart/form-data; boundary=TheBoundary
--TheBoundary
Content-Disposition: form-data; name="REQUEST"
Content-Type: application/xml
<n:request xmlns:n="http://www.intrum.ch/schema">
...
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The length or characters used in the boundary string have no influence; no matter what I use there are always two lines between HTTP header and boundary string in the MIME domain. |
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| fjb_saper |
| Posted: Wed Dec 09, 2015 9:01 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20767
Location: LI,NY
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Looks to me like your boundary string : 12a063b587462211 might end with a CRLF. But then that same CRLF is not recognized and introduces an extra blank line that causes the problem?? 
_________________
MQ & Broker admin |
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| dsteinmann |
| Posted: Wed Dec 09, 2015 1:52 pm Post subject: |
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Novice
Joined: 09 Dec 2015
Posts: 15
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I don't add this additional CRLF (see top of my post for complete code):
| Code: |
SET OutputRoot.Properties.ContentType = 'multipart/form-data; boundary=----------------------12a063b587462211';
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| maurito |
| Posted: Thu Dec 10, 2015 12:41 am Post subject: |
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Partisan
Joined: 17 Apr 2014
Posts: 358
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| dsteinmann wrote: |
I don't add this additional CRLF (see top of my post for complete code):
| Code: |
SET OutputRoot.Properties.ContentType = 'multipart/form-data; boundary=----------------------12a063b587462211';
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but you are not generating the same message with ESQL.
Try generating EXACTLY the same message with ESQL, i.e
| Code: |
SET OutputRoot.Properties.ContentType = 'multipart/form-data; boundary=TheBoundary';
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That probably will work, and if it does, then you are a lot closer to working out why. |
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| dsteinmann |
| Posted: Thu Dec 10, 2015 2:38 am Post subject: |
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Novice
Joined: 09 Dec 2015
Posts: 15
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| maurito wrote: |
That probably will work, and if it does, then you are a lot closer to working out why. |
As I wrote previously ("The length or characters used in the boundary string have no influence"), the type boundary string does not matter. |
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| maurito |
| Posted: Thu Dec 10, 2015 3:14 am Post subject: |
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Partisan
Joined: 17 Apr 2014
Posts: 358
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| dsteinmann wrote: |
| maurito wrote: |
That probably will work, and if it does, then you are a lot closer to working out why. |
As I wrote previously ("The length or characters used in the boundary string have no influence"), the type boundary string does not matter. |
But the contents may have an influence. In your ESQL the field starts with "--" and in the BLOB it does not.
If you want to say : it does not work in ESQL but it does with BLOB, you need to prove it with EXACTLY the same message. Otherwise your statement is invalid. |
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| dsteinmann |
| Posted: Thu Dec 10, 2015 3:27 am Post subject: |
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Novice
Joined: 09 Dec 2015
Posts: 15
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Ok, I did the test again. Here is the ESQL code:
| Code: |
DECLARE CONTENT BLOB ASBITSTREAM(InputRoot.XMLNSC, InputProperties.Encoding, InputProperties.CodedCharSetId);
SET OutputRoot.Properties.CodedCharSetId = 1208;
SET OutputRoot.Properties.ContentType = 'multipart/form-data; boundary=TheBoundary';
SET OutputRoot.HTTPRequestHeader.Accept = '*/*';
CREATE LASTCHILD OF OutputRoot DOMAIN('MIME');
CREATE LASTCHILD OF OutputRoot.MIME TYPE Name NAME 'Parts';
CREATE LASTCHILD OF OutputRoot.MIME.Parts TYPE Name NAME 'Part';
DECLARE P1 REFERENCE TO OutputRoot.MIME.Parts.Part;
CREATE FIELD P1."Content-Type" TYPE NameValue VALUE 'application/xml';
CREATE FIELD P1."Content-Disposition" TYPE NameValue VALUE 'form-data; name="REQUEST"';
CREATE LASTCHILD OF P1 TYPE Name NAME 'Data';
CREATE LASTCHILD OF P1.Data DOMAIN('BLOB') PARSE(CONTENT);
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And here is what I captured with Wireshark:
| Code: |
POST /services/KMS/response.cfm HTTP/1.1
Content-Length: 614
Accept: */*
Content-Type: multipart/form-data; boundary=TheBoundary
Host: secure.intrum.ch
SOAPAction: ""
Connection: Keep-Alive
--TheBoundary
Content-Type: application/xml
Content-Disposition: form-data; name="REQUEST"
<n:request xmlns:n="http://www.intrum.ch/schema">
...
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There are 2 empty lines between the last HTTP header and the first boundary. But the target server (secure.intrum.ch) expects exactly 1 empty line. |
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| maurito |
| Posted: Thu Dec 10, 2015 3:33 am Post subject: |
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Partisan
Joined: 17 Apr 2014
Posts: 358
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| dsteinmann wrote: |
Ok, I did the test again. Here is the ESQL code:
| Code: |
DECLARE CONTENT BLOB ASBITSTREAM(InputRoot.XMLNSC, InputProperties.Encoding, InputProperties.CodedCharSetId);
SET OutputRoot.Properties.CodedCharSetId = 1208;
SET OutputRoot.Properties.ContentType = 'multipart/form-data; boundary=TheBoundary';
SET OutputRoot.HTTPRequestHeader.Accept = '*/*';
CREATE LASTCHILD OF OutputRoot DOMAIN('MIME');
CREATE LASTCHILD OF OutputRoot.MIME TYPE Name NAME 'Parts';
CREATE LASTCHILD OF OutputRoot.MIME.Parts TYPE Name NAME 'Part';
DECLARE P1 REFERENCE TO OutputRoot.MIME.Parts.Part;
CREATE FIELD P1."Content-Type" TYPE NameValue VALUE 'application/xml';
CREATE FIELD P1."Content-Disposition" TYPE NameValue VALUE 'form-data; name="REQUEST"';
CREATE LASTCHILD OF P1 TYPE Name NAME 'Data';
CREATE LASTCHILD OF P1.Data DOMAIN('BLOB') PARSE(CONTENT);
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And here is what I captured with Wireshark:
| Code: |
POST /services/KMS/response.cfm HTTP/1.1
Content-Length: 614
Accept: */*
Content-Type: multipart/form-data; boundary=TheBoundary
Host: secure.intrum.ch
SOAPAction: ""
Connection: Keep-Alive
--TheBoundary
Content-Type: application/xml
Content-Disposition: form-data; name="REQUEST"
<n:request xmlns:n="http://www.intrum.ch/schema">
...
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There are 2 empty lines between the last HTTP header and the first boundary. But the target server (secure.intrum.ch) expects exactly 1 empty line. |
time for a PMR then. |
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