How to know internally redirect in Proxy Server

Question

Hello,
I notice that our developed NSAP codes, at very first time, Sun Java System proxy Server internally redirect in Proxy Server.
If anyone knows how we can get the behavior difference between internal redirect and normal procedure to see the pblock structure.
Best Regards;
MMd1

Answer 1

Here is the program.
My NSAPI program generate POST message in the below, but Web Proxy Server generate the appended URL in the below;
http: //tnakamura-t42.xxx.com:85/NSAPI_dev/http%3A//tnakamura-t42.xxx.com%3A86/test4/test1.html
The last GET in the message of the below should be;
http%3A//tnakamura-t42.xxx.com%3A86/test4/test1.html
The Web Proxy Server internally redirect the below.
I am not sure why Web Proxy Server modify the URL between (POST -> GET message)
If anyone knows the causes, please let us know.
( Here is the HTTP Header packet log)
==================================================
POST http: //tsugai-t42.xxx.com:85/NSAP_dev/aaa_logon_en.html HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*
Referer: http://tsugai-t42.xxx.com:85/NSAP_dev/aaa_logon_en.html
Accept-Language: ja
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322)
Host: tsugai-t42.xxx.com:85
Content-Length: 55
Proxy-Connection: Keep-Alive
Pragma: no-cache
Cookie: AAAASESSION=aHR0cCUzQS8vdHN1Z2FpLXQ0Mi5hcC5yc2EubmV0JTNBODYvdGVzdDQvdGVzdDEuaHRtbA%3D%3D
auth_mode=basic&user=aaaaa&password=xxxx&x=13&y=10
HTTP/1.1 303 See Other
Server: Sun-Java-System-Web-Proxy-Server/4.0.2
Date: Thu, 20 Apr 2006 23:57:42 GMT
Content-length: 106
Content-type: text/html
Set-cookie: AAASESSION=AAAAAQABAEBmNJDkbIY5stNO5YOpcqSUkKpAA341dbnAtqDShjDEk%2FUNelCn%2BSc2eOutJiX3tla1aFs2muQ%2BZ61WHhDvQfDr; domain=.xxx.com; path=/
Location: http%3A//tnakamura-t42.xxx.com%3A86/test4/test1.html
Connection: close
GET http: //tnakamura-t42.xxx.com:85/NSAPI_dev/http%3A//tnakamura-t42.xxx.com%3A86/test4/test1.html HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, */*
Referer: http://tnakamura-t42.xxx.com:85/NSAPI_dev/aaa_logon_en.html
Accept-Language: ja
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322)
Host: tnakamura-t42.xxx.com:85
Proxy-Connection: Keep-Alive
Pragma: no-cache
Cookie: AAAASESSION=aHR0cCUzQS8vdHN1Z2FpLXQ0Mi5hcC5yc2EubmV0JTNBODYvdGVzdDQvdGVzdDEuaHRtbA%3D%3D; AAASESSION=AAAAAQABAEBmNJDkbIY5stNO5YOpcqSUkKpAA341dbnAtqDShjDEk%2FUNelCn%2BSc2eOutJiX3tla1aFs2muQ%2BZ61WHhDvQfDr
HTTP/1.1 403 Forbidden
Content-length: 142
Content-type: text/html
Server: Sun-ONE-Web-Server/6.1
Date: Thu, 20 Apr 2006 23:57:49 GMT
Via: 1.1 proxy-proxy402
Proxy-agent: Sun-Java-System-Web-Proxy-Server/4.0.2
=========================================