HTTP Protocol help needed

[Kannan Varadharajan]

We have tried sending HL7 Messages using POST Method, HTTPQUERY proc and {MSGUSE DATA} param from Cloverleaf 5.2.1 to WebServer 2000/2003 using HTTP Protocol but we got the error, HTTP INTERNAL ERROR 500, reply from the Web Server.

Topic

[Dennis Pfeifer]

I don’t have a solution for you .. but ..

something that I find useful in diagnosing this type of problem is to use

hcitcptest

set up a listener, ..

and connect to it from your web browser ..

I can usually create a web page that does ‘exactly’ what I want.

I then review the data sent to hcitcptest…

I modify the engine code .. and evaluate it with a connection to

hcitcptest .. and make modifications until I’m comfortable with the results ..

and then .. I connect to the ‘real’ web server ..

…

here’s a simple test ..

---

[hci@swlx226]$ hcitcptest -t raw -p 7000

Listening for connection on port 7000….

---

from a browser on my PC ..

http:///swlx26.swmed.edu:7000/

---

on my unix box .. I see ..

---

Connection from cis-gx280-dpfeif.ircis.swmed.org at port 1842

Data recieved from the host will be printed to standard

output in a hex dump format. (Including any encoding chars,

data is dumped exactly as read.)

If you wish to *send* data, just type it in and press

return

Type C to quit

Got 389 bytes of data from host:

0x00000000 (00000)   47455420 2f204854 54502f31 2e310d0a   GET / HTTP/1.1..

0x00000010 (00016)   41636365 70743a20 696d6167 652f6769   Accept: image/gi

0x00000020 (00032)   662c2069 6d616765 2f782d78 6269746d   f, image/x-xbitm

0x00000030 (00048)   61702c20 696d6167 652f6a70 65672c20   ap, image/jpeg,

0x00000040 (00064)   696d6167 652f706a 7065672c 20617070   image/pjpeg, app

0x00000050 (00080)   6c696361 74696f6e 2f782d73 686f636b   lication/x-shock

0x00000060 (00096)   77617665 2d666c61 73682c20 6170706c   wave-flash, appl

0x00000070 (00112)   69636174 696f6e2f 766e642e 6d732d65   ication/vnd.ms-e

0x00000080 (00128)   7863656c 2c206170 706c6963 6174696f   xcel, applicatio

0x00000090 (00144)   6e2f766e 642e6d73 2d706f77 6572706f   n/vnd.ms-powerpo

0x000000a0 (00160)   696e742c 20617070 6c696361 74696f6e   int, application

0x000000b0 (00176)   2f6d7377 6f72642c 202a2f2a 0d0a4163   /msword, */*..Ac

0x000000c0 (00192)   63657074 2d4c616e 67756167 653a2065   cept-Language: e

0x000000d0 (00208)   6e2d7573 0d0a4163 63657074 2d456e63   n-us..Accept-Enc

0x000000e0 (00224)   6f64696e 673a2067 7a69702c 20646566   oding: gzip, def

0x000000f0 (00240)   6c617465 0d0a5573 65722d41 67656e74   late..User-Agent

0x00000100 (00256)   3a204d6f 7a696c6c 612f342e 30202863   : Mozilla/4.0 (c

0x00000110 (00272)   6f6d7061 7469626c 653b204d 53494520   ompatible; MSIE

0x00000120 (00288)   362e303b 2057696e 646f7773 204e5420   6.0; Windows NT

0x00000130 (00304)   352e313b 20535631 3b202e4e 45542043   5.1; SV1; .NET C

0x00000140 (00320)   4c522031 2e312e34 33323229 0d0a486f   LR 1.1.4322)..Ho

0x00000150 (00336)   73743a20 73776c78 32362e73 776d6564   st: swlx26.swmed

0x00000160 (00352)   2e656475 3a373030 300d0a43 6f6e6e65   .edu:7000..Conne

0x00000170 (00368)   6374696f 6e3a204b 6565702d 416c6976   ction: Keep-Aliv

0x00000180 (00384)   650d0a0d 0a                           e….

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Can do the same with a post or get ..

Dennis

[Kannan Varadharajan]

Thanks a lot for your suggestion.

[Dennis Pfeifer]

>>Could you explain what this mean “[hci@swlx226]$”

It’s the name of my server …

it’s from the command prompt .. and can be ignored ..

Dennis

[Kannan Varadharajan]

Okay Thanks – Kannan V

[Joe Halbrook]

Kannan,

The HTTP 500 error means the receiving CGI script (ASP, Perl, etc.) on the web server is malformed (has a syntax error, or processing error) so the problem is likely not on the Cloverleaf side, but on the web server side.

BTW, HTTP 1.1 is backward compatible to previous version(s).

Joe

[Kannan Varadharajan]

Joe – Thanks for the good info.

[Author]

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