> On 3 Oct 2020, at 15:14, Christopher Schultz <ch...@christopherschultz.net> > wrote: > > Mauro, > > On 10/3/20 08:47, Mauro Tridici wrote: >> Dear Users, >> >> I’m struggling with the problem mentioned in this mail subject. >> When I try to download a 5GB sized file using two different tomcat web >> applications on two different virtual machines, I noticed that the >> browser download window shows a wrong file size (please take a look to >> the attached picture). >> Download starts regularly but it never ends. >> >> I tried to download different files using different web browsers, but >> nothing changed. >> It seems that this problem is not related to the web applications (as I >> said, I’m testing two applications) and it is not related to a specific >> tomcat version. >> >> I’m a “tomcat newbie”, could you please help me to understand the cause >> of this issue? >> You can find below some additional information about virtual machines, >> os and tomcat. >> >> *1) virtual machine “serverA"* >> >> OS: CentOS Linux release 7.8.2003 >> >> TOMCAT: >> Server version: Apache Tomcat/7.0.76 >> Server built: Mar 17 2020 23:48:55 UTC >> Server number: 7.0.76.0 >> OS Name: Linux >> OS Version: 3.10.0-1127.8.2.el7.x86_64 >> Architecture: amd64 >> JVM Version: 1.8.0_252-b09 >> JVM Vendor: Oracle Corporation >> >> *2) virtual machine “serverB”* >> >> OS: CentOS Linux release 7.8.2003 >> >> TOMCAT: >> Server version: Apache Tomcat/8.5.56 >> Server built: Jun 3 2020 20:18:30 UTC >> Server number: 8.5.56.0 >> OS Name: Linux >> OS Version: 3.10.0-1127.8.2.el7.x86_64 >> Architecture: amd64 >> JVM Version: 1.8.0_252-b09 >> JVM Vendor: Oracle Corporation >> >> >> Thank you in advance, >> Mauro > > Can you observe the HTTP response headers sent by the server along with > the file? > > Also, how are you sending the file(s) from the application to the > client? Are you using sendfile? Are you using the DefaultServlet? Or do > you have your own code which reads the file and writes it to the client? > > Does the download always stop at the same point (byte count), or it is > different each time? > > My guess is: > > 1. The code is in your application (or at least, not using Tomcat's code > at all) > > 2. The code uses "int" variable to track the file size / set > Content-Length response header > > 3. The file size is 5.4GiB > > 4. 5.4 GiB will overflow a 32-bit int by 3.4GiB resulting in a value of > +1.4GiB final value > > 5. This value is being send to the client in the Content-Length header > > 6. The client is terminating the download after 1.4GiB (respecting the > Content-Length header) > > -chris > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org
HI Christopher, thank you very much for your answer. You can find below the HTTP response headers detected during the download fo file named disk-0.vmdk 172.16.1.8 - - [03/Oct/2020:15:25:53 +0200] "GET /irods-cloud-backend/virtualCollection/root HTTP/1.1" 401 951 172.16.1.8 - - [03/Oct/2020:15:25:53 +0200] "GET /irods-cloud-backend/collection/root?offset=0&path=%2Fidas%2Fhome%2Fsysm02 HTTP/1.1" 401 951 172.16.1.8 - - [03/Oct/2020:15:25:54 +0200] "GET /irods-cloud-backend/initialConf HTTP/1.1" 200 138 172.16.1.8 - - [03/Oct/2020:15:26:00 +0200] "OPTIONS /irods-cloud-backend/login/ HTTP/1.1" 200 - 172.16.1.8 - - [03/Oct/2020:15:26:00 +0200] "POST /irods-cloud-backend/login/ HTTP/1.1" 200 102 172.16.1.8 - - [03/Oct/2020:15:26:01 +0200] "GET /irods-cloud-backend/collection/root?offset=0&path=%2Fidas%2Fhome%2Fsysm02 HTTP/1.1" 200 8117 172.16.1.8 - - [03/Oct/2020:15:26:01 +0200] "GET /irods-cloud-backend/virtualCollection/root HTTP/1.1" 200 480 172.16.1.8 - - [03/Oct/2020:15:26:01 +0200] "GET /irods-cloud-backend/fileCreatorTemplate HTTP/1.1" 200 787 172.16.1.8 - - [03/Oct/2020:15:26:02 +0200] "GET /irods-cloud-backend/virtualCollection HTTP/1.1" 200 2304 172.16.1.8 - - [03/Oct/2020:15:40:29 +0200] "GET /irods-cloud-backend/download?path=/idas/home/sysm02/disk-0.vmdk HTTP/1.1" 200 1532646912 Unfortunately, I can't give you more details about how the sfiles are sent to the client because the 2 different web applications have not been created by me (this is one of web applications I’m using https://github.com/irods-contrib/irods-cloud-browser <https://github.com/irods-contrib/irods-cloud-browser>) I’m sorry, but I’m not a developer. The file download is always completed and it stops at the same point (1.4GB) In your opinion, if the problem is related to the 32-bit overflow, is there something that I can do in order to solve this issue. Since I can’t modify any change to these two applications, I would like to know if I can do something on the other sides. Many thanks again for your patience. Mauro
