Re: missing headers

[Mark Thomas]

On 02/05/2024 06:15, Piyush Sharma wrote:

Hi,

How to forward custom headers from frontend tomcat to backend tomcat witn
mod_jk?


When using mod_jk the front end is always httpd, not Tomcat.

You don't need to do anything. mod_jk passes all the http headers it 
receives.



*Scenario :*

1. APP1 : Apache (mod_jk) + Tomcat
2. APP2 : Apache (mod_jk) + Tomcat

Now, when a user accesses APP1 it add fews headers via SSO app user details
etc..
I can see in Tomcat logs as by adding filters. Now when the request goes to
APP2 (backend Tomcat via Apache), it drops those custom headers.


That sounds like a client issue. Client sends request to app1 and 
receives some custom headers. If you want those headers sent to app2 
then that is a client issue, not a Tomcat issue.



I came to
know that *mod_jk does not use the http protocol to talk to the tomcat
server.* Is there any way to forward all the custom headers from frontend
application to backend applications.


This already happens.


https://stackoverflow.com/questions/18998715/http-response-header-not-coming-with-apache-tomcat-connection-using-mod-jk


There is a fair amount of nonsense in both the question and some of the 
responses.


It would be a lot easier to help you if you provided a lot more 
information. For example:


- httpd version
- tomcat version
- mod_jk version
- httpd configuration
- tomcat configuration
- mod_jk configuration
- sample request as sent by the client
- sample request as received by Tomcat
- sample response as sent by Tomcat
- sample response as received by the client
- the previous 4 to be provided both by going via the reverse proxy and
  by going directly to Tomcat

Mark


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Re: SPNEGO GSSCaller {UNKNOWN} No Delegated Creds

[Tom Delaney]

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SPNEGO GSSCaller {UNKNOWN} No Delegated Creds

[Tom Delaney]

Hi All,

Sorry for the duplicate requests. The first one was accidentally flagged
for Google's new Confidential Mode which happened to be flagged.
I have a red hat 9.2 server hosting a web application on a single instance
of Apache Tomcat. This instance is behind an apache HTTP server on version
2.4.57.The application is hosted on Tomcat 9.0.54.

Domain: subdomain.domain.com
Site: devexample.domain.com

URL hit: https://example.subdomain.domain.com/webclient/
exclient.jsp

*I keep getting this in the Tomcat Logs when accessing the application:*
*>>> Constrained deleg from GSSCaller{UNKNOWN}*

*The site outputs: No Delegated Creds*

==> /usr/local/tomcat.base1/logs/catalina.out <==
Entered SpNegoContext.acceptSecContext with state=STATE_NEW
SpNegoContext.acceptSecContext: receiving token = a0 82 07 9c 30 82 07 98
a0 30 30 2e 06 09 2a 86 48 82 f7 12 01 02 02 06 09 2a 86 48 86 f7 12 01 02
02 06 0a 2b 06 01 04 01 82 37 02 02 1e 06 0a 2b 06 01 04 01 82 37 02 02 0a
a2 82 07 62 04 82 07 5e 60 82 07 5a 06 09 2a 86 48 86 f7 12 01 02 02 01 00
6e 82 07 49 30 82 07 45 a0 03 02 01 05 a1 03 02 01 0e a2 07 03 05 00 20 00
00 00 a3 82 05 5c 61 82 05 58 30 82 05 54 a0 03 02 01 05 a1 15 1b 13 46 55
54 55 52 45 54 45 43 48 2e 46 54 45 49 2e 43 4f 4d a2 2a 30 28 a0 03 02 01
02 a1 21 30 1f 1b 04 48 54 54 50 1b 17 73 32 6b 2e 66 75 74 75 72 65 74 65
63 68 2e 66 74 65 69 2e 63 6f 6d a3 82 05 08 30 82 05 04 a0 03 02 01 12 a1
03 02 01 08 a2 82 04 f6 04 82 04 f2 6f c8 bd c5 94 ec a6 05 e6 36 6e 51 f4
ef c5 06 64 3d ba b8 01 c0 f3 0b 61 7f da 55 bc ba ae 8b dd d1 d0 f8 f0 b1
be 99 36 ae 6b 60 c2 31 88 af 4e f2 de a4 ce 6e e7 56 58 62 15 76 fc 41 e9
38 99 bc 3c 83 5a d7 b3 41 fa 65 0e 14 ae 6e f8 ea 23 3a d4 d8 61 37 bf 22
db 0f 48 e1 31 42 59 e9 08 55 cd 6f 50 fc 8e f7 11 76 3a 7f 69 a4 1e 3d 36
9d c8 98 00 e1 43 d0 fc cd 66 97 4a ac 41 d9 76 a4 a1 31 c8 df 11 10 dc f8
74 c4 56 1e cc f9 bc 72 41 e4 ab d6 d4 a0 79 1d 47 4a d0 61 f5 9b 72 9d fb
8a 9a 6b ec 7e d4 72 45 67 66 ff 35 3c b0 42 c1 07 38 c1 4c 90 77 c3 d8 98
64 04 fa 29 d1 37 aa be 32 03 43 5c 1e 31 ce c0 dc 42 1d 51 8f d9 bb 53 35
3c 85 42 ba e9 84 e5 c6 bd b2 e0 1b cb b0 79 00 39 4d b2 71 9d 8d 4a d9 03
35 38 d0 2c f0 1c 2b 61 29 b4 9e 73 15 f2 8a 94 cd 2a ff 61 09 0d 9f 91 2f
3f af d3 99 da 67 1e e0 14 01 fe 60 24 23 40 a0 17 b3 6f 8d 22 19 a7 59 4b
1b b3 86 94 4a 2b 55 e0 b8 77 84 19 fe 25 34 ca 7e 08 a9 f1 39 87 5c f8 bb
33 53 aa 21 48 53 f6 dc 33 39 77 87 cc 20 8b a9 33 d4 bd c6 43 17 a3 0b 0b
bd fd b3 02 a8 32 ad ee c3 35 4d 89 0a 33 de 04 7a 0a cb 6b 6d dc db dd 4f
65 23 4a 1d ba af eb 33 4a 9a e0 87 c3 14 44 bf 6a 1c 5d a3 9c 8b 32 fc e7
e1 ad df 67 cf 49 2e 18 f7 f7 1c de e1 60 6d d0 e9 47 33 d2 19 a4 6c da 49
03 d8 b5 d9 0f 1e d3 81 1b 51 f5 d7 56 a0 f7 48 fa aa 9a ba f6 11 6c c9 64
43 77 8e d6 fe 5d 56 d4 77 34 c0 28 db 22 23 5b 52 97 10 5d 42 ed 67 ad 01
75 a3 ac fe da a4 e6 46 7d c1 b7 3a 8a 07 87 fb 79 3a a1 c0 79 c4 35 7a 2a
53 2d 8f 88 8a 85 73 c4 8e 12 34 1d c4 d9 f6 10 f5 ce f5 9e 35 2f 12 fd 00
84 d4 9e 8c 39 8c 5b ee bd 79 8a 1b f1 7b af 41 3e ec 57 71 2b a7 8c 47 7c
fe ff 88 ff f9 b4 e1 86 0b 6f 05 5b 58 36 d9 85 d8 6c 18 77 de b2 d4 16 91
d5 74 d2 8a 45 bd 4a c7 a1 99 1b bd f2 9a d3 53 2d 6b 45 47 9b e0 31 80 d7
63 b4 f1 c7 a9 64 6d 68 45 56 14 85 02 16 26 df 64 47 77 5e 35 13 55 10 a3
f5 70 3d 9c 4a c7 9f c8 a5 65 e1 63 ed 20 49 39 65 a0 ce 2a d8 c3 f0 06 7f
b1 df 89 f8 29 b5 21 90 ae 32 8a 1e d4 f5 d6 38 87 5b 5a e6 2f c3 ab c1 ed
cb 22 ca 1d 80 29 c6 c7 c4 c1 df b3 e8 02 9f b2 eb ec 49 d3 e6 90 2a b2 05
24 8b e5 ac 73 94 ba 9d 9f 6e 7b 4b fb 66 ae 73 27 30 0d 32 9d a8 07 63 4b
fa 53 44 9e 29 ae ec 7f 15 16 82 12 18 7a a4 31 90 0f 43 3c b1 c7 7f 66 4d
e1 3d 6e b6 c1 13 23 a5 6b 56 09 dd a5 df 27 4e fd 4c ec 93 48 2b d5 b0 d4
91 87 39 e9 e9 53 b9 84 7a 64 f3 e7 11 02 ba b3 7d 7a 92 86 82 c9 bd 48 03
dc cc 60 a1 ad 5f 15 96 a8 88 79 92 1c c5 6a 33 1e c4 0b 5e 3a 12 36 fd bb
d9 c7 dd 77 56 73 ae e6 d5 d9 7d b5 a3 66 75 8a 51 9b 65 ff e3 42 c3 8f dd
5a bf 65 33 96 d2 81 75 ff c4 0c 41 91 10 83 ea 78 f8 1e 3c 65 ab 42 ba 19
57 a5 a7 6d ba 3e 3a f3 01 67 eb 60 7d 5a 30 94 e7 60 9a bd 16 47 f6 21 d2
68 c1 63 30 f5 3b 4e f6 1c fe 99 a1 ea c1 c2 8b 17 b6 bb b3 13 20 73 69 99
9b fb d6 8c d4 21 90 b7 b1 dd 30 5d f2 7b 56 59 ea aa 7e ec b8 62 a3 32 c3
c0 40 4e 88 f9 95 54 85 17 83 06 1a 37 8c f4 21 07 d5 44 c2 ed 3c 8a 76 58
2b 73 2f 0d 7e 57 3c 2d 72 b8 03 e6 46 fa 80 8e 3e 45 93 65 6a 59 77 b4 b0
d2 20 95 1d fd 95 fb e5 e0 b0 40 91 e1 16 b9 4d 9c 4e bc c8 97 15 f2 9c e8
0a fa a4 14 27 42 ad da 03 54 72 c3 f2 b4 5b 69 ce 14 68 ed fe 20 67 3f ad
95 f6 05 4f 30 e3 62 ae a9 eb 46 7e 54 31 47 9e 08 e8 90 54 17 19 80 73 99
6d a6 c2 f3 47 b2 59 84 18 24 fb a0 60 ec ec cf ce 6a f6 3c 9d 99 53 34 c9
de e2 96 00 76 51 9e a3 fa 4d 3f fd 28 69 02 ce 9d 4e 7e 18 5b 22 58 cb 21
24 63 fd 05 0a 1c d7 ff f9 d8 15 3a f4 d5 33 59 00 7e 84 43 87 27 ab 05 b3
d9 5d ba 6b 39 4f 80 f3 47 7d eb 98 44 f7 46 24 f9 a5 00 df 47 24