This is a followup to my previous email, about Tomcat 500 errors. For every error, I see this in the mod_jk (1.2.39) debug logs:
[Fri Apr 11 13:06:33.956 2014] [25409:140068250126304] [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1403): received from ajp13 pos=0 len=114 max=16384 [Fri Apr 11 13:06:33.956 2014] [25409:140068250126304] [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1403): 0000 04 01 F4 00 15 49 6E 74 65 72 6E 61 6C 20 53 65 - .....Internal.Se [Fri Apr 11 13:06:33.956 2014] [25409:140068250126304] [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1403): 0010 72 76 65 72 20 45 72 72 6F 72 00 00 02 A0 07 00 - rver.Error...... [Fri Apr 11 13:06:33.957 2014] [25409:140068250126304] [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1403): 0020 34 6F 61 6D 2E 46 6C 61 73 68 2E 52 45 4E 44 45 - 4oam.Flash.RENDE [Fri Apr 11 13:06:33.957 2014] [25409:140068250126304] [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1403): 0030 52 4D 41 50 2E 54 4F 4B 45 4E 3D 2D 31 79 76 30 - RMAP.TOKEN=-1yv0 [Fri Apr 11 13:06:33.957 2014] [25409:140068250126304] [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1403): 0040 6F 6D 7A 74 68 3B 20 50 61 74 68 3D 2F 3B 20 53 - omzth;.Path=/;.S [Fri Apr 11 13:06:33.957 2014] [25409:140068250126304] [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1403): 0050 65 63 75 72 65 00 A0 01 00 17 74 65 78 74 2F 68 - ecure.....text/h [Fri Apr 11 13:06:33.957 2014] [25409:140068250126304] [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1403): 0060 74 6D 6C 3B 63 68 61 72 73 65 74 3D 55 54 46 2D - tml;charset=UTF- [Fri Apr 11 13:06:33.957 2014] [25409:140068250126304] [debug] ajp_connection_tcp_get_message::jk_ajp_common.c (1403): 0070 38 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 - 8………….. Has anyone seen this or have a resolution?