Thanks so much! ----- Original Message -----
From: "Christopher Schultz" <[email protected]> To: "Tomcat Users List" <[email protected]> Sent: Friday, October 17, 2014 5:01:49 PM Subject: Re: mod-jk reports errors when downloading files above 4 MB, but runs fine for smaller file sizes -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 To whom it may concern, On 10/17/14 4:51 PM, [email protected] wrote: > Hi, I'm using mod-jk (v1.2.40) on CentOS Linux server to pass > requests from Apache web server (v2.4.9) to GlassFish (v3.1.2) > application server. I'm using a java 7 servlet (shown below) on my > application server to enable a client to download a PDF file via > HTTPS. > > Things work fine when this file size is less than about 4 MB. When > the file is larger than 4 MB, I see the following errors in the > mod_jk.log file: > > [info] init_jk::mod_jk.c (3383): mod_jk/1.2.40 initialized [error] > ajp_connection_tcp_get_message::jk_ajp_common.c (1313): wrong > message format 0xcad5 from ::1:8009 [error] > ajp_get_reply::jk_ajp_common.c (2204): (worker1) Tomcat is down or > network problems. Part of the response has already been sent to the > client [info] ajp_service::jk_ajp_common.c (2673): (worker1) > sending request to tomcat failed (recoverable), because of protocol > error (attempt=1) [info] ajp_process_callback::jk_ajp_common.c > (2000): Writing to client aborted or client network problems [info] > ajp_service::jk_ajp_common.c (2673): (worker1) sending request to > tomcat failed (unrecoverable), because of client write error > (attempt=2) [info] jk_handler::mod_jk.c (2799): Aborting connection > for worker=worker1 > > I'm not an expert here, and wondered if anyone could decode this to > find root cause and solution. There are no errors in Apache or > GlassFish log files. When I run the client Google Chrome browser > (for example), it appears to download the first 4 MB and then > report "network error". Other browsers behave similarly. Mod_jk > appears to have the only log file reporting an error. > > Other miscellaneous thoughts: > > 1. My server doesn't have a firewall limiting file size. > > 2. My client router/modem doesn't limit file download size (I > download much larger files often). > > 3. As far as I'm aware, the Java code below doesn't restrict the > file size download (can anyone confirm? perhaps mod-jk is > complaining about the header or content type?). > > 4. GlassFish timeout is 15 minutes, and the browser stops > downloading after perhaps 10 seconds. > > I'm running out of things to check. What could it be? Any help is > MUCH appreciated. Thanks. Looks like it's an old GlassFish bug: https://java.net/jira/browse/GLASSFISH-18446 and http://stackoverflow.com/questions/9770529/glassfish-jk-large-file-strange-response Funny how Googling for "mod_jk message format 0xcad5" can find exactly what you were looking for. - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: GPGTools - http://gpgtools.org iQIcBAEBCAAGBQJUQa3tAAoJEBzwKT+lPKRYXL0P/1r+mj6taEZHCbn1ZpSCMHJ3 9C/ByrbV6mtbO5AQUSeJ+FJuLMoF9g02A2CjfTAXoiTzb8Q8yUSW/myGPouUsHtV BoexlvjCAYYrGzNybM4f6A4vQ76kq7rEXt0o8zj2V4LOHHB5pHoKsU53e2a4re+a /1EL0ZyVgkeZOa09vNdh0bRa15zlf3JCG5u+mKa+6H2BdSHJCz4wbv8NV74w/Jc4 2E8j46se5Jx+pa2lhX1D2tHrcbtq3feUijELrMJcKQq0/Lujy+N7nZP/udQncdvB KrvSn1T9LdqYFr0QS9LuxS/6bEb36CMUifRCXjaqBiVctBAw7zxdOql0FOKZRH95 mNtajRhpJJp7dPzLMes0uowcCqa5M957r64ab0/KOcNfLyhwmmUVTiFSFZ3FWoOP azsu5IDFO6HVK46MxHWWqoJOdE2bEFcYCSwpOcImDwCxHGckDtZYlY8lTPPQr/jx 2s/M0lvYCYwxKGwF9bqpREuPrRCH+YLIDUxdwoloy3o75k8GzR2QPxvEOnzqEose rMzWcDpnS09MSK5vHJ7EzFgMa8S/ohqK9dYTASNe2rpJ1QXZSgpe39JH2snhuk7j wwX19WrHrADL71qz8Ekg2mNnyyaHxJF5yU1kFgB0eTF4makZbheaP0CuArV+EWiJ cS3TsRD9t6kRvz6FDsP7 =+0h4 -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
