HttpRequest maximum allowable size in tomcat

Question

What is the maximum data size I can send in a single HttpURLConnection to Tomcat  Is there any limitation for the request size

User · Answer

Although other answers include some of the following information, this is the absolute minimum that needs to be changed on EC2 instances, specifically regarding deployment of large WAR files, and is the least likely to cause issues during future updates. I've been running into these limits about every other year due to the ever-increasing size of the Jenkins WAR file (now ~72MB).

More specifically, this answer is applicable if you encounter a variant of the following error in catalina.out:

SEVERE [https-jsse-nio-8443-exec-17] org.apache.catalina.core.ApplicationContext.log HTMLManager:
FAIL - Deploy Upload Failed, Exception:
[org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException:
the request was rejected because its size (75333656) exceeds the configured maximum (52428800)]

On Amazon EC2 Linux instances, the only file that needs to be modified from the default installation of Tomcat (sudo yum install tomcat8) is:

/usr/share/tomcat8/webapps/manager/WEB-INF/web.xml

By default, the maximum upload size is exactly 50MB:

<multipart-config>
  <!-- 50MB max -->
  <max-file-size>52428800</max-file-size>
  <max-request-size>52428800</max-request-size>
  <file-size-threshold>0</file-size-threshold>
</multipart-config>

There are only two values that need to be modified (max-file-size and max-request-size):

<multipart-config>
  <!-- 100MB max -->
  <max-file-size>104857600</max-file-size>
  <max-request-size>104857600</max-request-size>
  <file-size-threshold>0</file-size-threshold>
</multipart-config>

When Tomcat is upgraded on these instances, the new version of the manager web.xml will be placed in web.xml.rpmnew, so any modifications to the original file will not be overwritten during future updates.

User · Answer

You have to modify two possible limits   In conf server xml   lt Connector port  80  protocol  HTTP 1 1                 connectionTimeout  20000                 redirectPort  8443                  maxPostSize  67589953    gt    In webapps manager WEB-INF web xml   lt multipart-config gt     lt  -- 52MB max -- gt     lt max-file-size gt 52428800 lt  max-file-size gt     lt max-request-size gt 52428800 lt  max-request-size gt     lt file-size-threshold gt 0 lt  file-size-threshold gt   lt  multipart-config gt

User · Answer

The full answer  1  The default  fresh install of tomcat   When you download tomcat from their official website  of today that s tomcat version 9 0 26   all the apps you installed to tomcat can handle HTTP requests of unlimited size  given that the apps themselves do not have any limits on request size   However  when you try to upload an app in tomcat s manager app  that app has a default war file limit of 50MB  If you re trying to install Jenkins for example which is 77 MB as ot today  it will fail   2  Configure tomcat s per port http request size limit  Tomcat itself has size limit for each port  and this is defined in conf server xml  This is controlled by maxPostSize attribute of each Connector port   If this attribute does not exist  which it is by default  there is no limit on the request size   To add a limit to a specific port  set a byte size for the attribute  For example  the below config for the default 8080 port limits request size to 200 MB  This means that all the apps installed under port 8080 now has the size limit of 200MB   lt Connector port  8080  protocol  HTTP 1 1             connectionTimeout  20000             redirectPort  8443             maxPostSize  209715200    gt    3  Configure app level size limit  After passing the port level size limit  you can still configure app level limit  This also means that app level limit should be less than port level limit  The limit can be done through annotation within each servlet  or in the web xml file  Again  if this is not set at all  there is no limit on request size   To set limit through java annotation   WebServlet   uploadFiles    MultipartConfig  fileSizeThreshold   0  maxFileSize   209715200  maxRequestSize   209715200  public class FileUploadServlet extends HttpServlet        public void doPost HttpServletRequest request  HttpServletResponse response                             To set limit through web xml   lt web-app gt           lt servlet gt               lt multipart-config gt         lt file-size-threshold gt 0 lt  file-size-threshold gt         lt max-file-size gt 209715200 lt  max-file-size gt         lt max-request-size gt 209715200 lt  max-request-size gt       lt  multipart-config gt             lt  servlet gt         lt  web-app gt    4  Appendix - If you see file upload size error when trying to install app through Tomcat s Manager app  Tomcat s Manager app  by default localhost 8080 manager  is nothing but a default web app  By default that app has a web xml configuration of request limit of 50MB  To install  upload  app with size greater than 50MB through this manager app  you have to change the limit  Open the manager app s web xml file from webapps manager WEB-INF web xml and follow the above guide to change the size limit and finally restart tomcat

User · Answer

The connector section has the parameter  maxPostSize   The maximum size in bytes of the POST which will be handled by the container FORM URL parameter parsing  The limit can be disabled by setting this attribute to a value less than or equal to 0  If not specified  this attribute is set to 2097152  2 megabytes    Another Limit is   maxHttpHeaderSize The maximum size of the request and response HTTP header  specified in bytes  If not specified  this attribute is set to 4096  4 KB    You find them in    TOMCAT HOME conf server xml

User · Answer

Just to add to the answers  App Server Apache Geronimo 3 0 uses Tomcat 7 as the web server  and in that environment the file server xml is located at   lt  GERONIMO HOME  gt  var catalina server xml   The configuration does take effect even when the Geronimo Console at Application Server- gt WebServer- gt TomcatWebConnector- gt maxPostSize still displays 2097152  the default value

[java] HttpRequest maximum allowable size in tomcat?

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