Squid2.0 TCP_DENIED/400 5601 error with LONG URL

One of our developers is trying to use some long html string requests through an open portal through a service that we use online. He's sending the requests through a developed VB application that we currently use the same way, just nothing even CLOSE to a string this long.

saw these 2 configs in the squid.conf, but the body_size is set to default, so it sounds like it should be good to me.
#Default:
# request_header_max_size 20KB
#Default:
# request_body_max_size 0 KB

the string won't work if you test it as I removed a few lines (passwords and such).

If I bypass the software around the proxy, it works fine. below is the coded error:

any ideas on where to start? Need to see my squid.conf?
1242070293.835      0 172.19.6.68 TCP_DENIED/400 5601 GET http://open.peoplenetonline.com/scripts/open.dll?service=imessage_send&xml=%3C%3Fxml%20version%3D%221.0%22%20encoding%3D%22ISO%2D8859%2D1%22%3F%3E%3C!DOCTYPE%20pnet_imessage_send%20PUBLIC%20%22%2D%2F%2FPeopleNet%2F%2Fpnet_imessage_send%22%20%22http%3A%2F%2Fopen.peoplenetonline.com%2Fdtd%2Fpnet_imessage_send.dtd%22%3E%3Cpnet_imessage_send%3E%%3C%2Fcid%3E%3Cpw%%2Fpw%3E%3E%3Cdeliver%3Enow%3C%2Fdeliver%3E%3Cformdata%3E%3Cform_id%3E39190%3C%2Fform_id%3E%3Cim_field%3E%3Cquestion_number%3E14%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E1142%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E15%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_text%3ENone%3C%2Fdata_text%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E16%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_text%3EPOPLAR%20BLUFF%20%231%2C%20MO%3C%2Fdata_text%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E17%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_text%3E12345678901234567890123456789%3C%2Fdata_text%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E18%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_text%3E1234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890%3C%2Fdata_text%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E19%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_text%3ECAPE%20GIRARDEAU%2FSCOTT%20CITY%3C%2Fdata_text%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E22%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_text%3E89%20UNL%2010%25E%20%20%20%20%20%20%20%20%20%20%20%20%20%20%3C%2Fdata_text%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E23%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E4435%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E24%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E5000%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E25%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_text%3E89%20UNL%2010%25E%20%20%20%20%20%20%20%20%20%20%20%20%20%20%3C%2Fdata_text%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E26%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E7416%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E27%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E3500%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E28%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_text%3ENA%3C%2Fdata_text%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E29%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E0%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E30%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E0%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E33%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_date%2Dtime%3E05%2F10%2F09%2011%3A00%3C%2Fdata_date%2Dtime%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E34%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_date%2Dtime%3E05%2F10%2F09%2010%3A00%3C%2Fdata_date%2Dtime%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E35%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E20%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E36%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E2043466%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E37%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E114%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_number%3E38%3C%2Fquestion_number%3E%3Cdata%3E%3Cdata_numeric%2Denhanced%3E9004%3C%2Fdata_numeric%2Denhanced%3E%3C%2Fdata%3E%3C%2Fim_field%3E%3Cim_field%3E%3Cquestion_n - NONE/- text/html

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eah6122Asked:
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Todd MummertConnect With a Mentor Commented:

I believe there is/was a hard-coded max url length of 4096 characters (including terminators).   The portion you pasted above was well over 4000 characters, and you say you cut part of it, so you're probably pushing the limit.

--Todd
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eah6122Author Commented:
I have verified this.
cache.log:
2009/05/14 08:04:18| urlParse: URL too large (4337 bytes)

http://www.mail-archive.com/squid-users@squid-cache.org/msg59758.html

looks like I'll have to route them around the proxy for now since upgrading isn't high on our list right now.

Thanks for the help.
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